Update dependencies to v0.25.11 tag

Merge pull request #118556 from puerco/bump-1.25-go-1.19.10
[release-1.25] releng/go: Update images, deps and ver to go 1.19.10 Kubernetes-commit: 8826d7ee3fb80fc4d85ad8e9e50cbab14233ecf9
2026-06-09 18:55:26 +00:00 · 2023-06-14 21:26:54 +00:00 · 2023-06-12 17:34:53 +00:00 · 2023-06-08 00:18:54 -06:00 · 2023-05-23 18:39:03 +00:00 · 2023-05-06 01:27:01 +00:00
27 changed files with 3309 additions and 413 deletions
--- a/go.mod
+++ b/go.mod
@@ -5,27 +5,29 @@ module k8s.io/client-go
 go 1.19

 require (
+	github.com/Azure/go-autorest/autorest v0.11.27
+	github.com/Azure/go-autorest/autorest/adal v0.9.20
 	github.com/davecgh/go-spew v1.1.1
 	github.com/evanphx/json-patch v4.12.0+incompatible
 	github.com/gogo/protobuf v1.3.2
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da
 	github.com/golang/protobuf v1.5.2
 	github.com/google/gnostic v0.5.7-v3refs
-	github.com/google/go-cmp v0.5.6
+	github.com/google/go-cmp v0.5.8
 	github.com/google/gofuzz v1.1.0
-	github.com/google/uuid v1.1.2
+	github.com/google/uuid v1.3.0
 	github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7
 	github.com/imdario/mergo v0.3.6
 	github.com/peterbourgon/diskv v2.0.1+incompatible
 	github.com/spf13/pflag v1.0.5
-	github.com/stretchr/testify v1.7.0
-	golang.org/x/net v0.0.0-20220722155237-a158d28d115b
+	github.com/stretchr/testify v1.8.0
+	golang.org/x/net v0.8.0
 	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8
-	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
+	golang.org/x/term v0.6.0
 	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8
 	google.golang.org/protobuf v1.28.0
-	k8s.io/api v0.0.0-20220807235320-860821164923
-	k8s.io/apimachinery v0.0.0-20220805001719-117bd9b56ec3
+	k8s.io/api v0.25.11
+	k8s.io/apimachinery v0.25.11
 	k8s.io/klog/v2 v2.70.1
 	k8s.io/kube-openapi v0.0.0-20220803162953-67bda5d908f1
 	k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed
@@ -34,6 +36,11 @@ require (
 )

 require (
+	cloud.google.com/go v0.97.0 // indirect
+	github.com/Azure/go-autorest v14.2.0+incompatible // indirect
+	github.com/Azure/go-autorest/autorest/date v0.3.0 // indirect
+	github.com/Azure/go-autorest/logger v0.2.1 // indirect
+	github.com/Azure/go-autorest/tracing v0.6.0 // indirect
 	github.com/PuerkitoBio/purell v1.1.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
 	github.com/emicklei/go-restful/v3 v3.8.0 // indirect
@@ -41,6 +48,7 @@ require (
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.19.5 // indirect
 	github.com/go-openapi/swag v0.19.14 // indirect
+	github.com/golang-jwt/jwt/v4 v4.2.0 // indirect
 	github.com/google/btree v1.0.1 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
@@ -51,8 +59,9 @@ require (
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
-	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd // indirect
+	golang.org/x/sys v0.6.0 // indirect
+	golang.org/x/text v0.8.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
@@ -61,6 +70,6 @@ require (
 )

 replace (
-	k8s.io/api => k8s.io/api v0.0.0-20220807235320-860821164923
-	k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20220805001719-117bd9b56ec3
+	k8s.io/api => k8s.io/api v0.25.11
+	k8s.io/apimachinery => k8s.io/apimachinery v0.25.11
 )
--- a/go.sum
+++ b/go.sum
@@ -13,6 +13,19 @@ cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKV
 cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
 cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
 cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
+cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
+cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
+cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
+cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
+cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
+cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAVY=
+cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
+cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
+cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
+cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
+cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
+cloud.google.com/go v0.97.0 h1:3DXvAyifywvq64LfkKaMOmkWPS1CikIQdMe2lY9vxU8=
+cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -31,19 +44,41 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
+github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+github.com/Azure/go-autorest/autorest v0.11.27 h1:F3R3q42aWytozkV8ihzcgMO4OA4cuqr3bNlsEuF6//A=
+github.com/Azure/go-autorest/autorest v0.11.27/go.mod h1:7l8ybrIdUmGqZMTD0sRtAr8NvbHjfofbf8RSP2q7w7U=
+github.com/Azure/go-autorest/autorest/adal v0.9.18/go.mod h1:XVVeme+LZwABT8K5Lc3hA4nAe8LDBVle26gTrguhhPQ=
+github.com/Azure/go-autorest/autorest/adal v0.9.20 h1:gJ3E98kMpFB1MFqQCvA1yFab8vthOeD4VlFRQULxahg=
+github.com/Azure/go-autorest/autorest/adal v0.9.20/go.mod h1:XVVeme+LZwABT8K5Lc3hA4nAe8LDBVle26gTrguhhPQ=
+github.com/Azure/go-autorest/autorest/date v0.3.0 h1:7gUk1U5M/CQbp9WoqinNzJar+8KY+LPI6wiWrP/myHw=
+github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74=
+github.com/Azure/go-autorest/autorest/mocks v0.4.1/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k=
+github.com/Azure/go-autorest/autorest/mocks v0.4.2 h1:PGN4EDXnuQbojHbU0UWoNvmu9AGVwYHG9/fkDYhtAfw=
+github.com/Azure/go-autorest/autorest/mocks v0.4.2/go.mod h1:Vy7OitM9Kei0i1Oj+LvyAWMXJHeKH1MVlzFugfVrmyU=
+github.com/Azure/go-autorest/logger v0.2.1 h1:IG7i4p/mDa2Ce4TRyAO8IHnVhAVF3RFU+ZtXWSmf4Tg=
+github.com/Azure/go-autorest/logger v0.2.1/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8=
+github.com/Azure/go-autorest/tracing v0.6.0 h1:TYi4+3m5t6K48TGI9AUdb+IzbnSxvnvUMfuitfgcfuo=
+github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
+github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -55,9 +90,14 @@ github.com/emicklei/go-restful/v3 v3.8.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5ynNVH9qI8YYLbd1fK2po=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/evanphx/json-patch v4.12.0+incompatible h1:4onqiflcdA9EOZ4RxV643DvftH5pOlLGNtQ5lPWQu84=
 github.com/evanphx/json-patch v4.12.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -75,6 +115,9 @@ github.com/go-openapi/swag v0.19.14 h1:gm3vOOXfiuw5i9p5N9xJvfjvuofpyvLA9Wr6QfK5F
 github.com/go-openapi/swag v0.19.14/go.mod h1:QYRuS/SOXUCsnplDa677K7+DxSOj6IPNl/eQntq43wQ=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/golang-jwt/jwt/v4 v4.0.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
+github.com/golang-jwt/jwt/v4 v4.2.0 h1:besgBTC8w8HjP6NzQdxwKH9Z5oQMZ24ThTrHp3cZ8eU=
+github.com/golang-jwt/jwt/v4 v4.2.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -88,6 +131,8 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
 github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
 github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
 github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
+github.com/golang/mock v1.5.0/go.mod h1:CWnOUgYIOo4TcNZ0wHX3YZCqsaM1I1Jvs6v3mP3KVu8=
+github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -101,9 +146,12 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
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@@ -117,14 +165,20 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -132,17 +186,28 @@ github.com/google/pprof v0.0.0-20200212024743-f11f1df84d12/go.mod h1:ZgVRPoUq/hf
 github.com/google/pprof v0.0.0-20200229191704-1ebb73c60ed3/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
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@@ -174,8 +239,8 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq
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@@ -183,32 +248,44 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
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@@ -231,6 +308,8 @@ golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHl
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@@ -239,6 +318,9 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
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@@ -267,13 +349,32 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
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@@ -285,6 +386,8 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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@@ -310,18 +413,42 @@ golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7w
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 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
@@ -390,6 +527,18 @@ google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0M
 google.golang.org/api v0.28.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
 google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSrHWM=
 google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc=
+google.golang.org/api v0.35.0/go.mod h1:/XrVsuzM0rZmrsbjJutiuftIzeuTQcEeaYcSk/mQ1dg=
+google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34qYtE=
+google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
+google.golang.org/api v0.41.0/go.mod h1:RkxM5lITDfTzmyKFPt+wGrCJbVfniCr2ool8kTBzRTU=
+google.golang.org/api v0.43.0/go.mod h1:nQsDGjRXMo4lvh5hP0TKqF244gqhGcr/YSIykhUk/94=
+google.golang.org/api v0.47.0/go.mod h1:Wbvgpq1HddcWVtzsVLyfLp8lDg6AA241LmgIL59tHXo=
+google.golang.org/api v0.48.0/go.mod h1:71Pr1vy+TAZRPkPs/xlCf5SsU8WjuAWv1Pfjbtukyy4=
+google.golang.org/api v0.50.0/go.mod h1:4bNT5pAuq5ji4SRZm+5QIkjny9JAyVD/3gaSihNefaw=
+google.golang.org/api v0.51.0/go.mod h1:t4HdrdoNgyN5cbEfm7Lum0lcLDLiise1F8qDKX00sOU=
+google.golang.org/api v0.54.0/go.mod h1:7C4bFFOvVDGXjfDTAsgGwDgAxRDeQ4X8NvUedIt6z3k=
+google.golang.org/api v0.55.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE=
+google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdrMgI=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -421,13 +570,39 @@ google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfG
 google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
 google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201019141844-1ed22bb0c154/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
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+google.golang.org/genproto v0.0.0-20210828152312-66f60bf46e71/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210831024726-fe130286e0e2/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83/go.mod h1:eFjDcFEctNawg4eG61bRv87N7iHBWyVhJu7u1kqDUXY=
+google.golang.org/genproto v0.0.0-20210924002016-3dee208752a0/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -440,6 +615,20 @@ google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKa
 google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
+google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
+google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
+google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
+google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -452,6 +641,7 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -463,6 +653,7 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
@@ -477,10 +668,10 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-k8s.io/api v0.0.0-20220807235320-860821164923 h1:nDGbaAze/PQhS5Br0Q506rBEBVOlniVO7Mzjq1h9eOY=
-k8s.io/api v0.0.0-20220807235320-860821164923/go.mod h1:cuE2+aKfcxEMeHx/NuUKIL3aRJhth7/K9wlCf+3Q3+s=
-k8s.io/apimachinery v0.0.0-20220805001719-117bd9b56ec3 h1:Ru2oqar5qMV68dM0G6OEZs2C7qtydpReZ2dHsXpu/Kw=
-k8s.io/apimachinery v0.0.0-20220805001719-117bd9b56ec3/go.mod h1:qMx9eAk0sZQGsXGu86fab8tZdffHbwUfsvzqKn4mfB0=
+k8s.io/api v0.25.11 h1:4mjYDfE3yp22jrytjH0knwgzjXKkxHX4D01ZCAazvZM=
+k8s.io/api v0.25.11/go.mod h1:bK4UvD4bthtutNlvensrfBX21PRQ/vs2cIYggHkOOAo=
+k8s.io/apimachinery v0.25.11 h1:2EhfdrSAMvBxsswvOGCEymKk4ZnHZkranuZqdR0rsO4=
+k8s.io/apimachinery v0.25.11/go.mod h1:IFwbcNi3gKkfDhuy0VYu3+BwbxbiIov3p6FR8ge1Epc=
 k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
 k8s.io/klog/v2 v2.70.1 h1:7aaoSdahviPmR+XkS7FyxlkkXs6tHISSG03RxleQAVQ=
 k8s.io/klog/v2 v2.70.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
--- a/plugin/pkg/client/auth/azure/README.md
+++ b/plugin/pkg/client/auth/azure/README.md
@@ -0,0 +1,56 @@
+# Azure Active Directory plugin for client authentication
+
+This plugin provides an integration with Azure Active Directory device flow. If no tokens are present in the kubectl configuration, it will prompt a device code which can be used to login in a browser. After login it will automatically fetch the tokens and store them in the kubectl configuration. In addition it will refresh and update the tokens in the configuration when expired.
+
+## Usage
+
+1. Create an Azure Active Directory *Web App / API* application for `apiserver` following these [instructions](https://docs.microsoft.com/en-us/azure/active-directory/active-directory-app-registration). The callback URL does not matter (just cannot be empty).
+
+2. Create a second Azure Active Directory native application for `kubectl`. The callback URL does not matter (just cannot be empty).
+
+3. On `kubectl` application's configuration page in Azure portal grant permissions to `apiserver` application by clicking on *Required Permissions*, click the *Add* button and search for the apiserver application created in step 1. Select "Access apiserver" under the *DELEGATED PERMISSIONS*. Once added click the *Grant Permissions* button to apply the changes.
+
+4. Configure the `apiserver` to use the Azure Active Directory as an OIDC provider with following options
+
+   ```
+   --oidc-client-id="spn:APISERVER_APPLICATION_ID" \
+   --oidc-issuer-url="https://sts.windows.net/TENANT_ID/"
+   --oidc-username-claim="sub"
+   ```
+
+   * Replace the `APISERVER_APPLICATION_ID` with the application ID of `apiserver` application
+   * Replace `TENANT_ID` with your tenant ID.
+   * For a list of alternative username claims that are supported by the OIDC issuer check the JSON response at `https://sts.windows.net/TENANT_ID/.well-known/openid-configuration`.
+
+5. Configure `kubectl` to use the `azure` authentication provider
+
+   ```
+   kubectl config set-credentials "USER_NAME" --auth-provider=azure \
+     --auth-provider-arg=environment=AzurePublicCloud \
+     --auth-provider-arg=client-id=APPLICATION_ID \
+     --auth-provider-arg=tenant-id=TENANT_ID \
+     --auth-provider-arg=apiserver-id=APISERVER_APPLICATION_ID
+   ```
+
+   * Supported environments: `AzurePublicCloud`, `AzureUSGovernmentCloud`, `AzureChinaCloud`, `AzureGermanCloud`
+   * Replace `USER_NAME` and `TENANT_ID` with your user name and tenant ID
+   * Replace `APPLICATION_ID` with the application ID of your`kubectl` application ID
+   * Replace `APISERVER_APPLICATION_ID` with the application ID of your `apiserver` application ID
+   * Be sure to also (create and) select a context that uses above user
+
+6. (Optionally) the AAD token has `aud` claim with `spn:` prefix. To omit that, add following auth configuration:
+
+   ```
+     --auth-provider-arg=config-mode="1"
+   ```
+
+ 7. The access token is acquired when first `kubectl` command is executed
+
+   ```
+   kubectl get pods
+
+   To sign in, use a web browser to open the page https://aka.ms/devicelogin and enter the code DEC7D48GA to authenticate.
+   ```
+
+   * After signing in a web browser, the token is stored in the configuration, and it will be reused when executing further commands.
+   * The resulting username in Kubernetes depends on your [configuration of the `--oidc-username-claim` and `--oidc-username-prefix` flags on the API server](https://kubernetes.io/docs/admin/authentication/#configuring-the-api-server). If you are using any authorization method you need to give permissions to that user, e.g. by binding the user to a role in the case of RBAC.
--- a/plugin/pkg/client/auth/azure/azure.go
+++ b/plugin/pkg/client/auth/azure/azure.go
@@ -0,0 +1,477 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"strconv"
+	"sync"
+
+	"github.com/Azure/go-autorest/autorest"
+	"github.com/Azure/go-autorest/autorest/adal"
+	"github.com/Azure/go-autorest/autorest/azure"
+	"k8s.io/klog/v2"
+
+	"k8s.io/apimachinery/pkg/util/net"
+	restclient "k8s.io/client-go/rest"
+)
+
+type configMode int
+
+const (
+	azureTokenKey = "azureTokenKey"
+	tokenType     = "Bearer"
+	authHeader    = "Authorization"
+
+	cfgClientID     = "client-id"
+	cfgTenantID     = "tenant-id"
+	cfgAccessToken  = "access-token"
+	cfgRefreshToken = "refresh-token"
+	cfgExpiresIn    = "expires-in"
+	cfgExpiresOn    = "expires-on"
+	cfgEnvironment  = "environment"
+	cfgApiserverID  = "apiserver-id"
+	cfgConfigMode   = "config-mode"
+
+	configModeDefault       configMode = 0
+	configModeOmitSPNPrefix configMode = 1
+)
+
+func init() {
+	if err := restclient.RegisterAuthProviderPlugin("azure", newAzureAuthProvider); err != nil {
+		klog.Fatalf("Failed to register azure auth plugin: %v", err)
+	}
+}
+
+var cache = newAzureTokenCache()
+
+type azureTokenCache struct {
+	lock  sync.Mutex
+	cache map[string]*azureToken
+}
+
+func newAzureTokenCache() *azureTokenCache {
+	return &azureTokenCache{cache: make(map[string]*azureToken)}
+}
+
+func (c *azureTokenCache) getToken(tokenKey string) *azureToken {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	return c.cache[tokenKey]
+}
+
+func (c *azureTokenCache) setToken(tokenKey string, token *azureToken) {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+	c.cache[tokenKey] = token
+}
+
+var warnOnce sync.Once
+
+func newAzureAuthProvider(_ string, cfg map[string]string, persister restclient.AuthProviderConfigPersister) (restclient.AuthProvider, error) {
+	// deprecated in v1.22, remove in v1.25
+	warnOnce.Do(func() {
+		klog.Warningf(`WARNING: the azure auth plugin is deprecated in v1.22+, unavailable in v1.26+; use https://github.com/Azure/kubelogin instead.
+To learn more, consult https://kubernetes.io/docs/reference/access-authn-authz/authentication/#client-go-credential-plugins`)
+	})
+
+	var (
+		ts          tokenSource
+		environment azure.Environment
+		err         error
+		mode        configMode
+	)
+
+	environment, err = azure.EnvironmentFromName(cfg[cfgEnvironment])
+	if err != nil {
+		environment = azure.PublicCloud
+	}
+
+	mode = configModeDefault
+	if cfg[cfgConfigMode] != "" {
+		configModeInt, err := strconv.Atoi(cfg[cfgConfigMode])
+		if err != nil {
+			return nil, fmt.Errorf("failed to parse %s, error: %s", cfgConfigMode, err)
+		}
+		mode = configMode(configModeInt)
+		switch mode {
+		case configModeOmitSPNPrefix:
+		case configModeDefault:
+		default:
+			return nil, fmt.Errorf("%s:%s is not a valid mode", cfgConfigMode, cfg[cfgConfigMode])
+		}
+	}
+	ts, err = newAzureTokenSourceDeviceCode(environment, cfg[cfgClientID], cfg[cfgTenantID], cfg[cfgApiserverID], mode)
+	if err != nil {
+		return nil, fmt.Errorf("creating a new azure token source for device code authentication: %v", err)
+	}
+	cacheSource := newAzureTokenSource(ts, cache, cfg, mode, persister)
+
+	return &azureAuthProvider{
+		tokenSource: cacheSource,
+	}, nil
+}
+
+type azureAuthProvider struct {
+	tokenSource tokenSource
+}
+
+func (p *azureAuthProvider) Login() error {
+	return errors.New("not yet implemented")
+}
+
+func (p *azureAuthProvider) WrapTransport(rt http.RoundTripper) http.RoundTripper {
+	return &azureRoundTripper{
+		tokenSource:  p.tokenSource,
+		roundTripper: rt,
+	}
+}
+
+type azureRoundTripper struct {
+	tokenSource  tokenSource
+	roundTripper http.RoundTripper
+}
+
+var _ net.RoundTripperWrapper = &azureRoundTripper{}
+
+func (r *azureRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	if len(req.Header.Get(authHeader)) != 0 {
+		return r.roundTripper.RoundTrip(req)
+	}
+
+	token, err := r.tokenSource.Token()
+	if err != nil {
+		klog.Errorf("Failed to acquire a token: %v", err)
+		return nil, fmt.Errorf("acquiring a token for authorization header: %v", err)
+	}
+
+	// clone the request in order to avoid modifying the headers of the original request
+	req2 := new(http.Request)
+	*req2 = *req
+	req2.Header = make(http.Header, len(req.Header))
+	for k, s := range req.Header {
+		req2.Header[k] = append([]string(nil), s...)
+	}
+
+	req2.Header.Set(authHeader, fmt.Sprintf("%s %s", tokenType, token.token.AccessToken))
+
+	return r.roundTripper.RoundTrip(req2)
+}
+
+func (r *azureRoundTripper) WrappedRoundTripper() http.RoundTripper { return r.roundTripper }
+
+type azureToken struct {
+	token       adal.Token
+	environment string
+	clientID    string
+	tenantID    string
+	apiserverID string
+}
+
+type tokenSource interface {
+	Token() (*azureToken, error)
+	Refresh(*azureToken) (*azureToken, error)
+}
+
+type azureTokenSource struct {
+	source     tokenSource
+	cache      *azureTokenCache
+	lock       sync.Mutex
+	configMode configMode
+	cfg        map[string]string
+	persister  restclient.AuthProviderConfigPersister
+}
+
+func newAzureTokenSource(source tokenSource, cache *azureTokenCache, cfg map[string]string, configMode configMode, persister restclient.AuthProviderConfigPersister) tokenSource {
+	return &azureTokenSource{
+		source:     source,
+		cache:      cache,
+		cfg:        cfg,
+		persister:  persister,
+		configMode: configMode,
+	}
+}
+
+// Token fetches a token from the cache of configuration if present otherwise
+// acquires a new token from the configured source. Automatically refreshes
+// the token if expired.
+func (ts *azureTokenSource) Token() (*azureToken, error) {
+	ts.lock.Lock()
+	defer ts.lock.Unlock()
+
+	var err error
+	token := ts.cache.getToken(azureTokenKey)
+
+	if token != nil && !token.token.IsExpired() {
+		return token, nil
+	}
+
+	// retrieve from config if no cache
+	if token == nil {
+		tokenFromCfg, err := ts.retrieveTokenFromCfg()
+
+		if err == nil {
+			token = tokenFromCfg
+		}
+	}
+
+	if token != nil {
+		// cache and return if the token is as good
+		// avoids frequent persistor calls
+		if !token.token.IsExpired() {
+			ts.cache.setToken(azureTokenKey, token)
+			return token, nil
+		}
+
+		klog.V(4).Info("Refreshing token.")
+		tokenFromRefresh, err := ts.Refresh(token)
+		switch {
+		case err == nil:
+			token = tokenFromRefresh
+		case autorest.IsTokenRefreshError(err):
+			klog.V(4).Infof("Failed to refresh expired token, proceed to auth: %v", err)
+			// reset token to nil so that the token source will be used to acquire new
+			token = nil
+		default:
+			return nil, fmt.Errorf("unexpected error when refreshing token: %v", err)
+		}
+	}
+
+	if token == nil {
+		tokenFromSource, err := ts.source.Token()
+		if err != nil {
+			return nil, fmt.Errorf("failed acquiring new token: %v", err)
+		}
+		token = tokenFromSource
+	}
+
+	// sanity check
+	if token == nil {
+		return nil, fmt.Errorf("unable to acquire token")
+	}
+
+	// corner condition, newly got token is valid but expired
+	if token.token.IsExpired() {
+		return nil, fmt.Errorf("newly acquired token is expired")
+	}
+
+	err = ts.storeTokenInCfg(token)
+	if err != nil {
+		return nil, fmt.Errorf("storing the refreshed token in configuration: %v", err)
+	}
+	ts.cache.setToken(azureTokenKey, token)
+
+	return token, nil
+}
+
+func (ts *azureTokenSource) retrieveTokenFromCfg() (*azureToken, error) {
+	accessToken := ts.cfg[cfgAccessToken]
+	if accessToken == "" {
+		return nil, fmt.Errorf("no access token in cfg: %s", cfgAccessToken)
+	}
+	refreshToken := ts.cfg[cfgRefreshToken]
+	if refreshToken == "" {
+		return nil, fmt.Errorf("no refresh token in cfg: %s", cfgRefreshToken)
+	}
+	environment := ts.cfg[cfgEnvironment]
+	if environment == "" {
+		return nil, fmt.Errorf("no environment in cfg: %s", cfgEnvironment)
+	}
+	clientID := ts.cfg[cfgClientID]
+	if clientID == "" {
+		return nil, fmt.Errorf("no client ID in cfg: %s", cfgClientID)
+	}
+	tenantID := ts.cfg[cfgTenantID]
+	if tenantID == "" {
+		return nil, fmt.Errorf("no tenant ID in cfg: %s", cfgTenantID)
+	}
+	resourceID := ts.cfg[cfgApiserverID]
+	if resourceID == "" {
+		return nil, fmt.Errorf("no apiserver ID in cfg: %s", cfgApiserverID)
+	}
+	expiresIn := ts.cfg[cfgExpiresIn]
+	if expiresIn == "" {
+		return nil, fmt.Errorf("no expiresIn in cfg: %s", cfgExpiresIn)
+	}
+	expiresOn := ts.cfg[cfgExpiresOn]
+	if expiresOn == "" {
+		return nil, fmt.Errorf("no expiresOn in cfg: %s", cfgExpiresOn)
+	}
+	tokenAudience := resourceID
+	if ts.configMode == configModeDefault {
+		tokenAudience = fmt.Sprintf("spn:%s", resourceID)
+	}
+
+	return &azureToken{
+		token: adal.Token{
+			AccessToken:  accessToken,
+			RefreshToken: refreshToken,
+			ExpiresIn:    json.Number(expiresIn),
+			ExpiresOn:    json.Number(expiresOn),
+			NotBefore:    json.Number(expiresOn),
+			Resource:     tokenAudience,
+			Type:         tokenType,
+		},
+		environment: environment,
+		clientID:    clientID,
+		tenantID:    tenantID,
+		apiserverID: resourceID,
+	}, nil
+}
+
+func (ts *azureTokenSource) storeTokenInCfg(token *azureToken) error {
+	newCfg := make(map[string]string)
+	newCfg[cfgAccessToken] = token.token.AccessToken
+	newCfg[cfgRefreshToken] = token.token.RefreshToken
+	newCfg[cfgEnvironment] = token.environment
+	newCfg[cfgClientID] = token.clientID
+	newCfg[cfgTenantID] = token.tenantID
+	newCfg[cfgApiserverID] = token.apiserverID
+	newCfg[cfgExpiresIn] = string(token.token.ExpiresIn)
+	newCfg[cfgExpiresOn] = string(token.token.ExpiresOn)
+	newCfg[cfgConfigMode] = strconv.Itoa(int(ts.configMode))
+
+	err := ts.persister.Persist(newCfg)
+	if err != nil {
+		return fmt.Errorf("persisting the configuration: %v", err)
+	}
+	ts.cfg = newCfg
+	return nil
+}
+
+func (ts *azureTokenSource) Refresh(token *azureToken) (*azureToken, error) {
+	return ts.source.Refresh(token)
+}
+
+// refresh outdated token with adal.
+func (ts *azureTokenSourceDeviceCode) Refresh(token *azureToken) (*azureToken, error) {
+	env, err := azure.EnvironmentFromName(token.environment)
+	if err != nil {
+		return nil, err
+	}
+
+	var oauthConfig *adal.OAuthConfig
+	if ts.configMode == configModeOmitSPNPrefix {
+		oauthConfig, err = adal.NewOAuthConfigWithAPIVersion(env.ActiveDirectoryEndpoint, token.tenantID, nil)
+		if err != nil {
+			return nil, fmt.Errorf("building the OAuth configuration without api-version for token refresh: %v", err)
+		}
+	} else {
+		oauthConfig, err = adal.NewOAuthConfig(env.ActiveDirectoryEndpoint, token.tenantID)
+		if err != nil {
+			return nil, fmt.Errorf("building the OAuth configuration for token refresh: %v", err)
+		}
+	}
+
+	callback := func(t adal.Token) error {
+		return nil
+	}
+	spt, err := adal.NewServicePrincipalTokenFromManualToken(
+		*oauthConfig,
+		token.clientID,
+		token.apiserverID,
+		token.token,
+		callback)
+	if err != nil {
+		return nil, fmt.Errorf("creating new service principal for token refresh: %v", err)
+	}
+
+	if err := spt.Refresh(); err != nil {
+		// Caller expects IsTokenRefreshError(err) to trigger prompt.
+		return nil, fmt.Errorf("refreshing token: %w", err)
+	}
+
+	return &azureToken{
+		token:       spt.Token(),
+		environment: token.environment,
+		clientID:    token.clientID,
+		tenantID:    token.tenantID,
+		apiserverID: token.apiserverID,
+	}, nil
+}
+
+type azureTokenSourceDeviceCode struct {
+	environment azure.Environment
+	clientID    string
+	tenantID    string
+	apiserverID string
+	configMode  configMode
+}
+
+func newAzureTokenSourceDeviceCode(environment azure.Environment, clientID string, tenantID string, apiserverID string, configMode configMode) (tokenSource, error) {
+	if clientID == "" {
+		return nil, errors.New("client-id is empty")
+	}
+	if tenantID == "" {
+		return nil, errors.New("tenant-id is empty")
+	}
+	if apiserverID == "" {
+		return nil, errors.New("apiserver-id is empty")
+	}
+	return &azureTokenSourceDeviceCode{
+		environment: environment,
+		clientID:    clientID,
+		tenantID:    tenantID,
+		apiserverID: apiserverID,
+		configMode:  configMode,
+	}, nil
+}
+
+func (ts *azureTokenSourceDeviceCode) Token() (*azureToken, error) {
+	var (
+		oauthConfig *adal.OAuthConfig
+		err         error
+	)
+	if ts.configMode == configModeOmitSPNPrefix {
+		oauthConfig, err = adal.NewOAuthConfigWithAPIVersion(ts.environment.ActiveDirectoryEndpoint, ts.tenantID, nil)
+		if err != nil {
+			return nil, fmt.Errorf("building the OAuth configuration without api-version for device code authentication: %v", err)
+		}
+	} else {
+		oauthConfig, err = adal.NewOAuthConfig(ts.environment.ActiveDirectoryEndpoint, ts.tenantID)
+		if err != nil {
+			return nil, fmt.Errorf("building the OAuth configuration for device code authentication: %v", err)
+		}
+	}
+	client := &autorest.Client{}
+	deviceCode, err := adal.InitiateDeviceAuth(client, *oauthConfig, ts.clientID, ts.apiserverID)
+	if err != nil {
+		return nil, fmt.Errorf("initialing the device code authentication: %v", err)
+	}
+
+	_, err = fmt.Fprintln(os.Stderr, *deviceCode.Message)
+	if err != nil {
+		return nil, fmt.Errorf("prompting the device code message: %v", err)
+	}
+
+	token, err := adal.WaitForUserCompletion(client, deviceCode)
+	if err != nil {
+		return nil, fmt.Errorf("waiting for device code authentication to complete: %v", err)
+	}
+
+	return &azureToken{
+		token:       *token,
+		environment: ts.environment.Name,
+		clientID:    ts.clientID,
+		tenantID:    ts.tenantID,
+		apiserverID: ts.apiserverID,
+	}, nil
+}
--- a/plugin/pkg/client/auth/azure/azure_stub.go
+++ b/plugin/pkg/client/auth/azure/azure_stub.go
@@ -1,36 +0,0 @@
-/*
-Copyright 2022 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package azure
-
-import (
-	"errors"
-
-	"k8s.io/client-go/rest"
-	"k8s.io/klog/v2"
-)
-
-func init() {
-	if err := rest.RegisterAuthProviderPlugin("azure", newAzureAuthProvider); err != nil {
-		klog.Fatalf("Failed to register azure auth plugin: %v", err)
-	}
-}
-
-func newAzureAuthProvider(_ string, _ map[string]string, _ rest.AuthProviderConfigPersister) (rest.AuthProvider, error) {
-	return nil, errors.New(`The azure auth plugin has been removed.
-Please use the https://github.com/Azure/kubelogin kubectl/client-go credential plugin instead.
-See https://kubernetes.io/docs/reference/access-authn-authz/authentication/#client-go-credential-plugins for further details`)
-}
--- a/plugin/pkg/client/auth/azure/azure_test.go
+++ b/plugin/pkg/client/auth/azure/azure_test.go
@@ -0,0 +1,534 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package azure
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/Azure/go-autorest/autorest/adal"
+	"github.com/Azure/go-autorest/autorest/azure"
+)
+
+func TestAzureAuthProvider(t *testing.T) {
+	t.Run("validate against invalid configurations", func(t *testing.T) {
+		vectors := []struct {
+			cfg           map[string]string
+			expectedError string
+		}{
+			{
+				cfg: map[string]string{
+					cfgClientID:    "foo",
+					cfgApiserverID: "foo",
+					cfgTenantID:    "foo",
+					cfgConfigMode:  "-1",
+				},
+				expectedError: "config-mode:-1 is not a valid mode",
+			},
+			{
+				cfg: map[string]string{
+					cfgClientID:    "foo",
+					cfgApiserverID: "foo",
+					cfgTenantID:    "foo",
+					cfgConfigMode:  "2",
+				},
+				expectedError: "config-mode:2 is not a valid mode",
+			},
+			{
+				cfg: map[string]string{
+					cfgClientID:    "foo",
+					cfgApiserverID: "foo",
+					cfgTenantID:    "foo",
+					cfgConfigMode:  "foo",
+				},
+				expectedError: "failed to parse config-mode, error: strconv.Atoi: parsing \"foo\": invalid syntax",
+			},
+		}
+
+		for _, v := range vectors {
+			persister := &fakePersister{}
+			_, err := newAzureAuthProvider("", v.cfg, persister)
+			if !strings.Contains(err.Error(), v.expectedError) {
+				t.Errorf("cfg %v should fail with message containing '%s'. actual: '%s'", v.cfg, v.expectedError, err)
+			}
+		}
+	})
+
+	t.Run("it should return non-nil provider in happy cases", func(t *testing.T) {
+		vectors := []struct {
+			cfg                map[string]string
+			expectedConfigMode configMode
+		}{
+			{
+				cfg: map[string]string{
+					cfgClientID:    "foo",
+					cfgApiserverID: "foo",
+					cfgTenantID:    "foo",
+				},
+				expectedConfigMode: configModeDefault,
+			},
+			{
+				cfg: map[string]string{
+					cfgClientID:    "foo",
+					cfgApiserverID: "foo",
+					cfgTenantID:    "foo",
+					cfgConfigMode:  "0",
+				},
+				expectedConfigMode: configModeDefault,
+			},
+			{
+				cfg: map[string]string{
+					cfgClientID:    "foo",
+					cfgApiserverID: "foo",
+					cfgTenantID:    "foo",
+					cfgConfigMode:  "1",
+				},
+				expectedConfigMode: configModeOmitSPNPrefix,
+			},
+		}
+
+		for _, v := range vectors {
+			persister := &fakePersister{}
+			provider, err := newAzureAuthProvider("", v.cfg, persister)
+			if err != nil {
+				t.Errorf("newAzureAuthProvider should not fail with '%s'", err)
+			}
+			if provider == nil {
+				t.Fatalf("newAzureAuthProvider should return non-nil provider")
+			}
+			azureProvider := provider.(*azureAuthProvider)
+			if azureProvider == nil {
+				t.Fatalf("newAzureAuthProvider should return an instance of type azureAuthProvider")
+			}
+			ts := azureProvider.tokenSource.(*azureTokenSource)
+			if ts == nil {
+				t.Fatalf("azureAuthProvider should be an instance of azureTokenSource")
+			}
+			if ts.configMode != v.expectedConfigMode {
+				t.Errorf("expected configMode: %d, actual: %d", v.expectedConfigMode, ts.configMode)
+			}
+		}
+	})
+}
+
+func TestTokenSourceDeviceCode(t *testing.T) {
+	var (
+		clientID    = "clientID"
+		tenantID    = "tenantID"
+		apiserverID = "apiserverID"
+		configMode  = configModeDefault
+		azureEnv    = azure.Environment{}
+	)
+	t.Run("validate to create azureTokenSourceDeviceCode", func(t *testing.T) {
+		if _, err := newAzureTokenSourceDeviceCode(azureEnv, clientID, tenantID, apiserverID, configModeDefault); err != nil {
+			t.Errorf("newAzureTokenSourceDeviceCode should not have failed. err: %s", err)
+		}
+
+		if _, err := newAzureTokenSourceDeviceCode(azureEnv, clientID, tenantID, apiserverID, configModeOmitSPNPrefix); err != nil {
+			t.Errorf("newAzureTokenSourceDeviceCode should not have failed. err: %s", err)
+		}
+
+		_, err := newAzureTokenSourceDeviceCode(azureEnv, "", tenantID, apiserverID, configMode)
+		actual := "client-id is empty"
+		if err.Error() != actual {
+			t.Errorf("newAzureTokenSourceDeviceCode should have failed. expected: %s, actual: %s", actual, err)
+		}
+
+		_, err = newAzureTokenSourceDeviceCode(azureEnv, clientID, "", apiserverID, configMode)
+		actual = "tenant-id is empty"
+		if err.Error() != actual {
+			t.Errorf("newAzureTokenSourceDeviceCode should have failed. expected: %s, actual: %s", actual, err)
+		}
+
+		_, err = newAzureTokenSourceDeviceCode(azureEnv, clientID, tenantID, "", configMode)
+		actual = "apiserver-id is empty"
+		if err.Error() != actual {
+			t.Errorf("newAzureTokenSourceDeviceCode should have failed. expected: %s, actual: %s", actual, err)
+		}
+	})
+}
+func TestAzureTokenSource(t *testing.T) {
+	configModes := []configMode{configModeOmitSPNPrefix, configModeDefault}
+	expectedConfigModes := []string{"1", "0"}
+
+	for i, configMode := range configModes {
+		t.Run(fmt.Sprintf("validate token from cfg with configMode %v", configMode), func(t *testing.T) {
+			const (
+				serverID     = "fakeServerID"
+				clientID     = "fakeClientID"
+				tenantID     = "fakeTenantID"
+				accessToken  = "fakeToken"
+				environment  = "fakeEnvironment"
+				refreshToken = "fakeToken"
+				expiresIn    = "foo"
+				expiresOn    = "foo"
+			)
+			cfg := map[string]string{
+				cfgConfigMode:   strconv.Itoa(int(configMode)),
+				cfgApiserverID:  serverID,
+				cfgClientID:     clientID,
+				cfgTenantID:     tenantID,
+				cfgEnvironment:  environment,
+				cfgAccessToken:  accessToken,
+				cfgRefreshToken: refreshToken,
+				cfgExpiresIn:    expiresIn,
+				cfgExpiresOn:    expiresOn,
+			}
+			fakeSource := fakeTokenSource{token: newFakeAzureToken("fakeToken", time.Now().Add(3600*time.Second))}
+			persiter := &fakePersister{cache: make(map[string]string)}
+			tokenCache := newAzureTokenCache()
+			tokenSource := newAzureTokenSource(&fakeSource, tokenCache, cfg, configMode, persiter)
+			azTokenSource := tokenSource.(*azureTokenSource)
+			token, err := azTokenSource.retrieveTokenFromCfg()
+			if err != nil {
+				t.Errorf("failed to retrieve the token form cfg: %s", err)
+			}
+			if token.apiserverID != serverID {
+				t.Errorf("expecting token.apiserverID: %s, actual: %s", serverID, token.apiserverID)
+			}
+			if token.clientID != clientID {
+				t.Errorf("expecting token.clientID: %s, actual: %s", clientID, token.clientID)
+			}
+			if token.tenantID != tenantID {
+				t.Errorf("expecting token.tenantID: %s, actual: %s", tenantID, token.tenantID)
+			}
+			expectedAudience := serverID
+			if configMode == configModeDefault {
+				expectedAudience = fmt.Sprintf("spn:%s", serverID)
+			}
+			if token.token.Resource != expectedAudience {
+				t.Errorf("expecting adal token.Resource: %s, actual: %s", expectedAudience, token.token.Resource)
+			}
+		})
+
+		t.Run("validate token against cache", func(t *testing.T) {
+			fakeAccessToken := "fake token 1"
+			fakeSource := fakeTokenSource{token: newFakeAzureToken(fakeAccessToken, time.Now().Add(3600*time.Second))}
+			cfg := make(map[string]string)
+			persiter := &fakePersister{cache: make(map[string]string)}
+			tokenCache := newAzureTokenCache()
+			tokenSource := newAzureTokenSource(&fakeSource, tokenCache, cfg, configMode, persiter)
+			token, err := tokenSource.Token()
+			if err != nil {
+				t.Errorf("failed to retrieve the token form cache: %v", err)
+			}
+
+			wantCacheLen := 1
+			if len(tokenCache.cache) != wantCacheLen {
+				t.Errorf("Token() cache length error: got %v, want %v", len(tokenCache.cache), wantCacheLen)
+			}
+
+			if token != tokenCache.cache[azureTokenKey] {
+				t.Error("Token() returned token != cached token")
+			}
+
+			wantCfg := token2Cfg(token)
+			wantCfg[cfgConfigMode] = expectedConfigModes[i]
+			persistedCfg := persiter.Cache()
+
+			wantCfgLen := len(wantCfg)
+			persistedCfgLen := len(persistedCfg)
+			if wantCfgLen != persistedCfgLen {
+				t.Errorf("wantCfgLen and persistedCfgLen do not match, wantCfgLen=%v, persistedCfgLen=%v", wantCfgLen, persistedCfgLen)
+			}
+
+			for k, v := range persistedCfg {
+				if strings.Compare(v, wantCfg[k]) != 0 {
+					t.Errorf("Token() persisted cfg %s: got %v, want %v", k, v, wantCfg[k])
+				}
+			}
+
+			fakeSource.token = newFakeAzureToken("fake token 2", time.Now().Add(3600*time.Second))
+			token, err = tokenSource.Token()
+			if err != nil {
+				t.Errorf("failed to retrieve the cached token: %v", err)
+			}
+
+			if token.token.AccessToken != fakeAccessToken {
+				t.Errorf("Token() didn't return the cached token")
+			}
+		})
+	}
+}
+
+func TestAzureTokenSourceScenarios(t *testing.T) {
+	expiredToken := newFakeAzureToken("expired token", time.Now().Add(-time.Second))
+	extendedToken := newFakeAzureToken("extend token", time.Now().Add(1000*time.Second))
+	fakeToken := newFakeAzureToken("fake token", time.Now().Add(1000*time.Second))
+	wrongToken := newFakeAzureToken("wrong token", time.Now().Add(1000*time.Second))
+	tests := []struct {
+		name         string
+		sourceToken  *azureToken
+		refreshToken *azureToken
+		cachedToken  *azureToken
+		configToken  *azureToken
+		expectToken  *azureToken
+		tokenErr     error
+		refreshErr   error
+		expectErr    string
+		tokenCalls   uint
+		refreshCalls uint
+		persistCalls uint
+	}{
+		{
+			name:         "new config",
+			sourceToken:  fakeToken,
+			expectToken:  fakeToken,
+			tokenCalls:   1,
+			persistCalls: 1,
+		},
+		{
+			name:        "load token from cache",
+			sourceToken: wrongToken,
+			cachedToken: fakeToken,
+			configToken: wrongToken,
+			expectToken: fakeToken,
+		},
+		{
+			name:        "load token from config",
+			sourceToken: wrongToken,
+			configToken: fakeToken,
+			expectToken: fakeToken,
+		},
+		{
+			name:         "cached token timeout, extend success, config token should never load",
+			cachedToken:  expiredToken,
+			refreshToken: extendedToken,
+			configToken:  wrongToken,
+			expectToken:  extendedToken,
+			refreshCalls: 1,
+			persistCalls: 1,
+		},
+		{
+			name:         "config token timeout, extend failure, acquire new token",
+			configToken:  expiredToken,
+			refreshErr:   fakeTokenRefreshError{message: "FakeError happened when refreshing"},
+			sourceToken:  fakeToken,
+			expectToken:  fakeToken,
+			refreshCalls: 1,
+			tokenCalls:   1,
+			persistCalls: 1,
+		},
+		{
+			name:         "extend failure with fmt.Errorf nested tokenRefreshError",
+			configToken:  expiredToken,
+			refreshErr:   fmt.Errorf("refreshing token: %w", fakeTokenRefreshError{message: "nested FakeError happened when refreshing"}),
+			sourceToken:  fakeToken,
+			expectToken:  fakeToken,
+			refreshCalls: 1,
+			tokenCalls:   1,
+			persistCalls: 1,
+		},
+		{
+			name:         "unexpected error when extend",
+			configToken:  expiredToken,
+			refreshErr:   errors.New("unexpected refresh error"),
+			sourceToken:  fakeToken,
+			expectErr:    "unexpected refresh error",
+			refreshCalls: 1,
+		},
+		{
+			name:       "token error",
+			tokenErr:   errors.New("tokenerr"),
+			expectErr:  "tokenerr",
+			tokenCalls: 1,
+		},
+		{
+			name:        "Token() got expired token",
+			sourceToken: expiredToken,
+			expectErr:   "newly acquired token is expired",
+			tokenCalls:  1,
+		},
+		{
+			name:        "Token() got nil but no error",
+			sourceToken: nil,
+			expectErr:   "unable to acquire token",
+			tokenCalls:  1,
+		},
+	}
+	for _, tc := range tests {
+		configModes := []configMode{configModeOmitSPNPrefix, configModeDefault}
+
+		for _, configMode := range configModes {
+			t.Run(fmt.Sprintf("%s with configMode: %v", tc.name, configMode), func(t *testing.T) {
+				persister := newFakePersister()
+
+				cfg := map[string]string{
+					cfgConfigMode: strconv.Itoa(int(configMode)),
+				}
+				if tc.configToken != nil {
+					cfg = token2Cfg(tc.configToken)
+				}
+
+				tokenCache := newAzureTokenCache()
+				if tc.cachedToken != nil {
+					tokenCache.setToken(azureTokenKey, tc.cachedToken)
+				}
+
+				fakeSource := fakeTokenSource{
+					token:        tc.sourceToken,
+					tokenErr:     tc.tokenErr,
+					refreshToken: tc.refreshToken,
+					refreshErr:   tc.refreshErr,
+				}
+
+				tokenSource := newAzureTokenSource(&fakeSource, tokenCache, cfg, configMode, &persister)
+				token, err := tokenSource.Token()
+
+				if token != nil && fakeSource.token != nil && token.apiserverID != fakeSource.token.apiserverID {
+					t.Errorf("expecting apiservierID: %s, got: %s", fakeSource.token.apiserverID, token.apiserverID)
+				}
+				if fakeSource.tokenCalls != tc.tokenCalls {
+					t.Errorf("expecting tokenCalls: %v, got: %v", tc.tokenCalls, fakeSource.tokenCalls)
+				}
+
+				if fakeSource.refreshCalls != tc.refreshCalls {
+					t.Errorf("expecting refreshCalls: %v, got: %v", tc.refreshCalls, fakeSource.refreshCalls)
+				}
+
+				if persister.calls != tc.persistCalls {
+					t.Errorf("expecting persister calls: %v, got: %v", tc.persistCalls, persister.calls)
+				}
+
+				if tc.expectErr != "" {
+					if !strings.Contains(err.Error(), tc.expectErr) {
+						t.Errorf("expecting error %v, got %v", tc.expectErr, err)
+					}
+					if token != nil {
+						t.Errorf("token should be nil in err situation, got %v", token)
+					}
+				} else {
+					if err != nil {
+						t.Fatalf("error should be nil, got %v", err)
+					}
+					if token.token.AccessToken != tc.expectToken.token.AccessToken {
+						t.Errorf("token should have accessToken %v, got %v", token.token.AccessToken, tc.expectToken.token.AccessToken)
+					}
+				}
+			})
+		}
+	}
+}
+
+type fakePersister struct {
+	lock  sync.Mutex
+	cache map[string]string
+	calls uint
+}
+
+func newFakePersister() fakePersister {
+	return fakePersister{cache: make(map[string]string), calls: 0}
+}
+
+func (p *fakePersister) Persist(cache map[string]string) error {
+	p.lock.Lock()
+	defer p.lock.Unlock()
+	p.calls++
+	p.cache = map[string]string{}
+	for k, v := range cache {
+		p.cache[k] = v
+	}
+	return nil
+}
+
+func (p *fakePersister) Cache() map[string]string {
+	ret := map[string]string{}
+	p.lock.Lock()
+	defer p.lock.Unlock()
+	for k, v := range p.cache {
+		ret[k] = v
+	}
+	return ret
+}
+
+// a simple token source simply always returns the token property
+type fakeTokenSource struct {
+	token        *azureToken
+	tokenCalls   uint
+	tokenErr     error
+	refreshToken *azureToken
+	refreshCalls uint
+	refreshErr   error
+}
+
+func (ts *fakeTokenSource) Token() (*azureToken, error) {
+	ts.tokenCalls++
+	return ts.token, ts.tokenErr
+}
+
+func (ts *fakeTokenSource) Refresh(*azureToken) (*azureToken, error) {
+	ts.refreshCalls++
+	return ts.refreshToken, ts.refreshErr
+}
+
+func token2Cfg(token *azureToken) map[string]string {
+	cfg := make(map[string]string)
+	cfg[cfgAccessToken] = token.token.AccessToken
+	cfg[cfgRefreshToken] = token.token.RefreshToken
+	cfg[cfgEnvironment] = token.environment
+	cfg[cfgClientID] = token.clientID
+	cfg[cfgTenantID] = token.tenantID
+	cfg[cfgApiserverID] = token.apiserverID
+	cfg[cfgExpiresIn] = string(token.token.ExpiresIn)
+	cfg[cfgExpiresOn] = string(token.token.ExpiresOn)
+	return cfg
+}
+
+func newFakeAzureToken(accessToken string, expiresOnTime time.Time) *azureToken {
+	return &azureToken{
+		token:       newFakeADALToken(accessToken, strconv.FormatInt(expiresOnTime.Unix(), 10)),
+		environment: "testenv",
+		clientID:    "fake",
+		tenantID:    "fake",
+		apiserverID: "fake",
+	}
+}
+
+func newFakeADALToken(accessToken string, expiresOn string) adal.Token {
+	return adal.Token{
+		AccessToken:  accessToken,
+		RefreshToken: "fake",
+		ExpiresIn:    "3600",
+		ExpiresOn:    json.Number(expiresOn),
+		NotBefore:    json.Number(expiresOn),
+		Resource:     "fake",
+		Type:         "fake",
+	}
+}
+
+// copied from go-autorest/adal
+type fakeTokenRefreshError struct {
+	message string
+	resp    *http.Response
+}
+
+// Error implements the error interface which is part of the TokenRefreshError interface.
+func (tre fakeTokenRefreshError) Error() string {
+	return tre.message
+}
+
+// Response implements the TokenRefreshError interface, it returns the raw HTTP response from the refresh operation.
+func (tre fakeTokenRefreshError) Response() *http.Response {
+	return tre.resp
+}
--- a/plugin/pkg/client/auth/exec/exec.go
+++ b/plugin/pkg/client/auth/exec/exec.go
@@ -199,14 +199,18 @@ func newAuthenticator(c *cache, isTerminalFunc func(int) bool, config *api.ExecC
 		now:             time.Now,
 		environ:         os.Environ,

-		defaultDialer: defaultDialer,
-		connTracker:   connTracker,
+		connTracker: connTracker,
 	}

 	for _, env := range config.Env {
 		a.env = append(a.env, env.Name+"="+env.Value)
 	}

+	// these functions are made comparable and stored in the cache so that repeated clientset
+	// construction with the same rest.Config results in a single TLS cache and Authenticator
+	a.getCert = &transport.GetCertHolder{GetCert: a.cert}
+	a.dial = &transport.DialHolder{Dial: defaultDialer.DialContext}
+
 	return c.put(key, a), nil
 }

@@ -261,8 +265,6 @@ type Authenticator struct {
 	now             func() time.Time
 	environ         func() []string

-	// defaultDialer is used for clients which don't specify a custom dialer
-	defaultDialer *connrotation.Dialer
 	// connTracker tracks all connections opened that we need to close when rotating a client certificate
 	connTracker *connrotation.ConnectionTracker

@@ -273,6 +275,12 @@ type Authenticator struct {
 	mu          sync.Mutex
 	cachedCreds *credentials
 	exp         time.Time
+
+	// getCert makes Authenticator.cert comparable to support TLS config caching
+	getCert *transport.GetCertHolder
+	// dial is used for clients which do not specify a custom dialer
+	// it is comparable to support TLS config caching
+	dial *transport.DialHolder
 }

 type credentials struct {
@@ -300,18 +308,20 @@ func (a *Authenticator) UpdateTransportConfig(c *transport.Config) error {
 	if c.HasCertCallback() {
 		return errors.New("can't add TLS certificate callback: transport.Config.TLS.GetCert already set")
 	}
-	c.TLS.GetCert = a.cert
+	c.TLS.GetCert = a.getCert.GetCert
+	c.TLS.GetCertHolder = a.getCert // comparable for TLS config caching

-	var d *connrotation.Dialer
 	if c.Dial != nil {
 		// if c has a custom dialer, we have to wrap it
-		d = connrotation.NewDialerWithTracker(c.Dial, a.connTracker)
+		// TLS config caching is not supported for this config
+		d := connrotation.NewDialerWithTracker(c.Dial, a.connTracker)
+		c.Dial = d.DialContext
+		c.DialHolder = nil
 	} else {
-		d = a.defaultDialer
+		c.Dial = a.dial.Dial
+		c.DialHolder = a.dial // comparable for TLS config caching
 	}

-	c.Dial = d.DialContext
-
 	return nil
 }

--- a/plugin/pkg/client/auth/exec/exec_cache_test.go
+++ b/plugin/pkg/client/auth/exec/exec_cache_test.go
@@ -0,0 +1,106 @@
+/*
+Copyright 2022 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package exec_test // separate package to prevent circular import
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	utilnet "k8s.io/apimachinery/pkg/util/net"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+	clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
+)
+
+// TestExecTLSCache asserts the semantics of the TLS cache when exec auth is used.
+//
+// In particular, when:
+//   - multiple identical rest configs exist as distinct objects, and
+//   - these rest configs use exec auth, and
+//   - these rest configs are used to create distinct clientsets, then
+//
+// the underlying TLS config is shared between those clientsets.
+func TestExecTLSCache(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	t.Cleanup(cancel)
+
+	config1 := &rest.Config{
+		Host: "https://localhost",
+		ExecProvider: &clientcmdapi.ExecConfig{
+			Command:         "./testdata/test-plugin.sh",
+			APIVersion:      "client.authentication.k8s.io/v1",
+			InteractiveMode: clientcmdapi.IfAvailableExecInteractiveMode,
+		},
+	}
+	client1 := clientset.NewForConfigOrDie(config1)
+
+	config2 := &rest.Config{
+		Host: "https://localhost",
+		ExecProvider: &clientcmdapi.ExecConfig{
+			Command:         "./testdata/test-plugin.sh",
+			APIVersion:      "client.authentication.k8s.io/v1",
+			InteractiveMode: clientcmdapi.IfAvailableExecInteractiveMode,
+		},
+	}
+	client2 := clientset.NewForConfigOrDie(config2)
+
+	config3 := &rest.Config{
+		Host: "https://localhost",
+		ExecProvider: &clientcmdapi.ExecConfig{
+			Command:         "./testdata/test-plugin.sh",
+			Args:            []string{"make this exec auth different"},
+			APIVersion:      "client.authentication.k8s.io/v1",
+			InteractiveMode: clientcmdapi.IfAvailableExecInteractiveMode,
+		},
+	}
+	client3 := clientset.NewForConfigOrDie(config3)
+
+	_, _ = client1.CoreV1().Nodes().List(ctx, metav1.ListOptions{})
+	_, _ = client2.CoreV1().Namespaces().List(ctx, metav1.ListOptions{})
+	_, _ = client3.CoreV1().PersistentVolumes().List(ctx, metav1.ListOptions{})
+
+	rt1 := client1.RESTClient().(*rest.RESTClient).Client.Transport
+	rt2 := client2.RESTClient().(*rest.RESTClient).Client.Transport
+	rt3 := client3.RESTClient().(*rest.RESTClient).Client.Transport
+
+	tlsConfig1, err := utilnet.TLSClientConfig(rt1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	tlsConfig2, err := utilnet.TLSClientConfig(rt2)
+	if err != nil {
+		t.Fatal(err)
+	}
+	tlsConfig3, err := utilnet.TLSClientConfig(rt3)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if tlsConfig1 == nil || tlsConfig2 == nil || tlsConfig3 == nil {
+		t.Fatal("expected non-nil TLS configs")
+	}
+
+	if tlsConfig1 != tlsConfig2 {
+		t.Fatal("expected the same TLS config for matching exec config via rest config")
+	}
+
+	if tlsConfig1 == tlsConfig3 {
+		t.Fatal("expected different TLS config for non-matching exec config via rest config")
+	}
+}
--- a/plugin/pkg/client/auth/gcp/OWNERS
+++ b/plugin/pkg/client/auth/gcp/OWNERS
@@ -0,0 +1,8 @@
+# See the OWNERS docs at https://go.k8s.io/owners
+
+approvers:
+  - cjcullen
+reviewers:
+  - cjcullen
+emeritus_approvers:
+  - jlowdermilk
--- a/plugin/pkg/client/auth/gcp/gcp.go
+++ b/plugin/pkg/client/auth/gcp/gcp.go
@@ -0,0 +1,389 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package gcp
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os/exec"
+	"strings"
+	"sync"
+	"time"
+
+	"golang.org/x/oauth2"
+	"golang.org/x/oauth2/google"
+	"k8s.io/apimachinery/pkg/util/net"
+	"k8s.io/apimachinery/pkg/util/yaml"
+	restclient "k8s.io/client-go/rest"
+	"k8s.io/client-go/util/jsonpath"
+	"k8s.io/klog/v2"
+)
+
+func init() {
+	if err := restclient.RegisterAuthProviderPlugin("gcp", newGCPAuthProvider); err != nil {
+		klog.Fatalf("Failed to register gcp auth plugin: %v", err)
+	}
+}
+
+var (
+	// Stubbable for testing
+	execCommand = exec.Command
+
+	// defaultScopes:
+	// - cloud-platform is the base scope to authenticate to GCP.
+	// - userinfo.email is used to authenticate to GKE APIs with gserviceaccount
+	//   email instead of numeric uniqueID.
+	defaultScopes = []string{
+		"https://www.googleapis.com/auth/cloud-platform",
+		"https://www.googleapis.com/auth/userinfo.email"}
+)
+
+// gcpAuthProvider is an auth provider plugin that uses GCP credentials to provide
+// tokens for kubectl to authenticate itself to the apiserver. A sample json config
+// is provided below with all recognized options described.
+//
+//	{
+//	  'auth-provider': {
+//	    # Required
+//	    "name": "gcp",
+//
+//	    'config': {
+//	      # Authentication options
+//	      # These options are used while getting a token.
+//
+//	      # comma-separated list of GCP API scopes. default value of this field
+//	      # is "https://www.googleapis.com/auth/cloud-platform,https://www.googleapis.com/auth/userinfo.email".
+//			 # to override the API scopes, specify this field explicitly.
+//	      "scopes": "https://www.googleapis.com/auth/cloud-platform"
+//
+//	      # Caching options
+//
+//	      # Raw string data representing cached access token.
+//	      "access-token": "ya29.CjWdA4GiBPTt",
+//	      # RFC3339Nano expiration timestamp for cached access token.
+//	      "expiry": "2016-10-31 22:31:9.123",
+//
+//	      # Command execution options
+//	      # These options direct the plugin to execute a specified command and parse
+//	      # token and expiry time from the output of the command.
+//
+//	      # Command to execute for access token. Command output will be parsed as JSON.
+//	      # If "cmd-args" is not present, this value will be split on whitespace, with
+//	      # the first element interpreted as the command, remaining elements as args.
+//	      "cmd-path": "/usr/bin/gcloud",
+//
+//	      # Arguments to pass to command to execute for access token.
+//	      "cmd-args": "config config-helper --output=json"
+//
+//	      # JSONPath to the string field that represents the access token in
+//	      # command output. If omitted, defaults to "{.access_token}".
+//	      "token-key": "{.credential.access_token}",
+//
+//	      # JSONPath to the string field that represents expiration timestamp
+//	      # of the access token in the command output. If omitted, defaults to
+//	      # "{.token_expiry}"
+//	      "expiry-key": ""{.credential.token_expiry}",
+//
+//	      # golang reference time in the format that the expiration timestamp uses.
+//	      # If omitted, defaults to time.RFC3339Nano
+//	      "time-fmt": "2006-01-02 15:04:05.999999999"
+//	    }
+//	  }
+//	}
+type gcpAuthProvider struct {
+	tokenSource oauth2.TokenSource
+	persister   restclient.AuthProviderConfigPersister
+}
+
+var warnOnce sync.Once
+
+func newGCPAuthProvider(_ string, gcpConfig map[string]string, persister restclient.AuthProviderConfigPersister) (restclient.AuthProvider, error) {
+	warnOnce.Do(func() {
+		klog.Warningf(`WARNING: the gcp auth plugin is deprecated in v1.22+, unavailable in v1.26+; use gcloud instead.
+To learn more, consult https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke`)
+	})
+
+	ts, err := tokenSource(isCmdTokenSource(gcpConfig), gcpConfig)
+	if err != nil {
+		return nil, err
+	}
+	cts, err := newCachedTokenSource(gcpConfig["access-token"], gcpConfig["expiry"], persister, ts, gcpConfig)
+	if err != nil {
+		return nil, err
+	}
+	return &gcpAuthProvider{cts, persister}, nil
+}
+
+func isCmdTokenSource(gcpConfig map[string]string) bool {
+	_, ok := gcpConfig["cmd-path"]
+	return ok
+}
+
+func tokenSource(isCmd bool, gcpConfig map[string]string) (oauth2.TokenSource, error) {
+	// Command-based token source
+	if isCmd {
+		cmd := gcpConfig["cmd-path"]
+		if len(cmd) == 0 {
+			return nil, fmt.Errorf("missing access token cmd")
+		}
+		if gcpConfig["scopes"] != "" {
+			return nil, fmt.Errorf("scopes can only be used when kubectl is using a gcp service account key")
+		}
+		var args []string
+		if cmdArgs, ok := gcpConfig["cmd-args"]; ok {
+			args = strings.Fields(cmdArgs)
+		} else {
+			fields := strings.Fields(cmd)
+			cmd = fields[0]
+			args = fields[1:]
+		}
+		return newCmdTokenSource(cmd, args, gcpConfig["token-key"], gcpConfig["expiry-key"], gcpConfig["time-fmt"]), nil
+	}
+
+	// Google Application Credentials-based token source
+	scopes := parseScopes(gcpConfig)
+	ts, err := google.DefaultTokenSource(context.Background(), scopes...)
+	if err != nil {
+		return nil, fmt.Errorf("cannot construct google default token source: %v", err)
+	}
+	return ts, nil
+}
+
+// parseScopes constructs a list of scopes that should be included in token source
+// from the config map.
+func parseScopes(gcpConfig map[string]string) []string {
+	scopes, ok := gcpConfig["scopes"]
+	if !ok {
+		return defaultScopes
+	}
+	if scopes == "" {
+		return []string{}
+	}
+	return strings.Split(gcpConfig["scopes"], ",")
+}
+
+func (g *gcpAuthProvider) WrapTransport(rt http.RoundTripper) http.RoundTripper {
+	var resetCache map[string]string
+	if cts, ok := g.tokenSource.(*cachedTokenSource); ok {
+		resetCache = cts.baseCache()
+	} else {
+		resetCache = make(map[string]string)
+	}
+	return &conditionalTransport{&oauth2.Transport{Source: g.tokenSource, Base: rt}, g.persister, resetCache}
+}
+
+func (g *gcpAuthProvider) Login() error { return nil }
+
+type cachedTokenSource struct {
+	lk          sync.Mutex
+	source      oauth2.TokenSource
+	accessToken string `datapolicy:"token"`
+	expiry      time.Time
+	persister   restclient.AuthProviderConfigPersister
+	cache       map[string]string
+}
+
+func newCachedTokenSource(accessToken, expiry string, persister restclient.AuthProviderConfigPersister, ts oauth2.TokenSource, cache map[string]string) (*cachedTokenSource, error) {
+	var expiryTime time.Time
+	if parsedTime, err := time.Parse(time.RFC3339Nano, expiry); err == nil {
+		expiryTime = parsedTime
+	}
+	if cache == nil {
+		cache = make(map[string]string)
+	}
+	return &cachedTokenSource{
+		source:      ts,
+		accessToken: accessToken,
+		expiry:      expiryTime,
+		persister:   persister,
+		cache:       cache,
+	}, nil
+}
+
+func (t *cachedTokenSource) Token() (*oauth2.Token, error) {
+	tok := t.cachedToken()
+	if tok.Valid() && !tok.Expiry.IsZero() {
+		return tok, nil
+	}
+	tok, err := t.source.Token()
+	if err != nil {
+		return nil, err
+	}
+	cache := t.update(tok)
+	if t.persister != nil {
+		if err := t.persister.Persist(cache); err != nil {
+			klog.V(4).Infof("Failed to persist token: %v", err)
+		}
+	}
+	return tok, nil
+}
+
+func (t *cachedTokenSource) cachedToken() *oauth2.Token {
+	t.lk.Lock()
+	defer t.lk.Unlock()
+	return &oauth2.Token{
+		AccessToken: t.accessToken,
+		TokenType:   "Bearer",
+		Expiry:      t.expiry,
+	}
+}
+
+func (t *cachedTokenSource) update(tok *oauth2.Token) map[string]string {
+	t.lk.Lock()
+	defer t.lk.Unlock()
+	t.accessToken = tok.AccessToken
+	t.expiry = tok.Expiry
+	ret := map[string]string{}
+	for k, v := range t.cache {
+		ret[k] = v
+	}
+	ret["access-token"] = t.accessToken
+	ret["expiry"] = t.expiry.Format(time.RFC3339Nano)
+	return ret
+}
+
+// baseCache is the base configuration value for this TokenSource, without any cached ephemeral tokens.
+func (t *cachedTokenSource) baseCache() map[string]string {
+	t.lk.Lock()
+	defer t.lk.Unlock()
+	ret := map[string]string{}
+	for k, v := range t.cache {
+		ret[k] = v
+	}
+	delete(ret, "access-token")
+	delete(ret, "expiry")
+	return ret
+}
+
+type commandTokenSource struct {
+	cmd       string
+	args      []string
+	tokenKey  string `datapolicy:"token"`
+	expiryKey string `datapolicy:"secret-key"`
+	timeFmt   string
+}
+
+func newCmdTokenSource(cmd string, args []string, tokenKey, expiryKey, timeFmt string) *commandTokenSource {
+	if len(timeFmt) == 0 {
+		timeFmt = time.RFC3339Nano
+	}
+	if len(tokenKey) == 0 {
+		tokenKey = "{.access_token}"
+	}
+	if len(expiryKey) == 0 {
+		expiryKey = "{.token_expiry}"
+	}
+	return &commandTokenSource{
+		cmd:       cmd,
+		args:      args,
+		tokenKey:  tokenKey,
+		expiryKey: expiryKey,
+		timeFmt:   timeFmt,
+	}
+}
+
+func (c *commandTokenSource) Token() (*oauth2.Token, error) {
+	fullCmd := strings.Join(append([]string{c.cmd}, c.args...), " ")
+	cmd := execCommand(c.cmd, c.args...)
+	var stderr bytes.Buffer
+	cmd.Stderr = &stderr
+	output, err := cmd.Output()
+	if err != nil {
+		return nil, fmt.Errorf("error executing access token command %q: err=%v output=%s stderr=%s", fullCmd, err, output, string(stderr.Bytes()))
+	}
+	token, err := c.parseTokenCmdOutput(output)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing output for access token command %q: %v", fullCmd, err)
+	}
+	return token, nil
+}
+
+func (c *commandTokenSource) parseTokenCmdOutput(output []byte) (*oauth2.Token, error) {
+	output, err := yaml.ToJSON(output)
+	if err != nil {
+		return nil, err
+	}
+	var data interface{}
+	if err := json.Unmarshal(output, &data); err != nil {
+		return nil, err
+	}
+
+	accessToken, err := parseJSONPath(data, "token-key", c.tokenKey)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing token-key %q from %q: %v", c.tokenKey, string(output), err)
+	}
+	expiryStr, err := parseJSONPath(data, "expiry-key", c.expiryKey)
+	if err != nil {
+		return nil, fmt.Errorf("error parsing expiry-key %q from %q: %v", c.expiryKey, string(output), err)
+	}
+	var expiry time.Time
+	if t, err := time.Parse(c.timeFmt, expiryStr); err != nil {
+		klog.V(4).Infof("Failed to parse token expiry from %s (fmt=%s): %v", expiryStr, c.timeFmt, err)
+	} else {
+		expiry = t
+	}
+
+	return &oauth2.Token{
+		AccessToken: accessToken,
+		TokenType:   "Bearer",
+		Expiry:      expiry,
+	}, nil
+}
+
+func parseJSONPath(input interface{}, name, template string) (string, error) {
+	j := jsonpath.New(name)
+	buf := new(bytes.Buffer)
+	if err := j.Parse(template); err != nil {
+		return "", err
+	}
+	if err := j.Execute(buf, input); err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}
+
+type conditionalTransport struct {
+	oauthTransport *oauth2.Transport
+	persister      restclient.AuthProviderConfigPersister
+	resetCache     map[string]string
+}
+
+var _ net.RoundTripperWrapper = &conditionalTransport{}
+
+func (t *conditionalTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	if len(req.Header.Get("Authorization")) != 0 {
+		return t.oauthTransport.Base.RoundTrip(req)
+	}
+
+	res, err := t.oauthTransport.RoundTrip(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	if res.StatusCode == 401 {
+		klog.V(4).Infof("The credentials that were supplied are invalid for the target cluster")
+		t.persister.Persist(t.resetCache)
+	}
+
+	return res, nil
+}
+
+func (t *conditionalTransport) WrappedRoundTripper() http.RoundTripper { return t.oauthTransport.Base }
--- a/plugin/pkg/client/auth/gcp/gcp_stub.go
+++ b/plugin/pkg/client/auth/gcp/gcp_stub.go
@@ -1,36 +0,0 @@
-/*
-Copyright 2022 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package gcp
-
-import (
-	"errors"
-
-	"k8s.io/client-go/rest"
-	"k8s.io/klog/v2"
-)
-
-func init() {
-	if err := rest.RegisterAuthProviderPlugin("gcp", newGCPAuthProvider); err != nil {
-		klog.Fatalf("Failed to register gcp auth plugin: %v", err)
-	}
-}
-
-func newGCPAuthProvider(_ string, _ map[string]string, _ rest.AuthProviderConfigPersister) (rest.AuthProvider, error) {
-	return nil, errors.New(`The gcp auth plugin has been removed.
-Please use the "gke-gcloud-auth-plugin" kubectl/client-go credential plugin instead.
-See https://cloud.google.com/blog/products/containers-kubernetes/kubectl-auth-changes-in-gke for further details`)
-}
--- a/plugin/pkg/client/auth/gcp/gcp_test.go
+++ b/plugin/pkg/client/auth/gcp/gcp_test.go
@@ -0,0 +1,527 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package gcp
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"os/exec"
+	"reflect"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"golang.org/x/oauth2"
+)
+
+type fakeOutput struct {
+	args   []string
+	output string
+}
+
+var (
+	wantCmd []string
+	// Output for fakeExec, keyed by command
+	execOutputs = map[string]fakeOutput{
+		"/default/no/args": {
+			args: []string{},
+			output: `{
+  "access_token": "faketoken",
+  "token_expiry": "2016-10-31T22:31:09.123000000Z"
+}`},
+		"/default/legacy/args": {
+			args: []string{"arg1", "arg2", "arg3"},
+			output: `{
+  "access_token": "faketoken",
+  "token_expiry": "2016-10-31T22:31:09.123000000Z"
+}`},
+		"/space in path/customkeys": {
+			args: []string{"can", "haz", "auth"},
+			output: `{
+  "token": "faketoken",
+  "token_expiry": {
+    "datetime": "2016-10-31 22:31:09.123"
+  }
+}`},
+		"missing/tokenkey/noargs": {
+			args: []string{},
+			output: `{
+  "broken": "faketoken",
+  "token_expiry": {
+    "datetime": "2016-10-31 22:31:09.123000000Z"
+  }
+}`},
+		"missing/expirykey/legacyargs": {
+			args: []string{"split", "on", "whitespace"},
+			output: `{
+  "access_token": "faketoken",
+  "expires": "2016-10-31T22:31:09.123000000Z"
+}`},
+		"invalid expiry/timestamp": {
+			args: []string{"foo", "--bar", "--baz=abc,def"},
+			output: `{
+  "access_token": "faketoken",
+  "token_expiry": "sometime soon, idk"
+}`},
+		"badjson": {
+			args: []string{},
+			output: `{
+  "access_token": "faketoken",
+  "token_expiry": "sometime soon, idk"
+  ------
+`},
+	}
+)
+
+func fakeExec(command string, args ...string) *exec.Cmd {
+	cs := []string{"-test.run=TestHelperProcess", "--", command}
+	cs = append(cs, args...)
+	cmd := exec.Command(os.Args[0], cs...)
+	cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
+	return cmd
+}
+
+func TestHelperProcess(t *testing.T) {
+	if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
+		return
+	}
+	// Strip out the leading args used to exec into this function.
+	gotCmd := os.Args[3]
+	gotArgs := os.Args[4:]
+	output, ok := execOutputs[gotCmd]
+	if !ok {
+		fmt.Fprintf(os.Stdout, "unexpected call cmd=%q args=%v\n", gotCmd, gotArgs)
+		os.Exit(1)
+	} else if !reflect.DeepEqual(output.args, gotArgs) {
+		fmt.Fprintf(os.Stdout, "call cmd=%q got args %v, want: %v\n", gotCmd, gotArgs, output.args)
+		os.Exit(1)
+	}
+	fmt.Fprintf(os.Stdout, output.output)
+	os.Exit(0)
+}
+
+func Test_isCmdTokenSource(t *testing.T) {
+	c1 := map[string]string{"cmd-path": "foo"}
+	if v := isCmdTokenSource(c1); !v {
+		t.Fatalf("cmd-path present in config (%+v), but got %v", c1, v)
+	}
+
+	c2 := map[string]string{"cmd-args": "foo bar"}
+	if v := isCmdTokenSource(c2); v {
+		t.Fatalf("cmd-path not present in config (%+v), but got %v", c2, v)
+	}
+}
+
+func Test_tokenSource_cmd(t *testing.T) {
+	if _, err := tokenSource(true, map[string]string{}); err == nil {
+		t.Fatalf("expected error, cmd-args not present in config")
+	}
+
+	c := map[string]string{
+		"cmd-path": "foo",
+		"cmd-args": "bar"}
+	ts, err := tokenSource(true, c)
+	if err != nil {
+		t.Fatalf("failed to return cmd token source: %+v", err)
+	}
+	if ts == nil {
+		t.Fatal("returned nil token source")
+	}
+	if _, ok := ts.(*commandTokenSource); !ok {
+		t.Fatalf("returned token source type:(%T) expected:(*commandTokenSource)", ts)
+	}
+}
+
+func Test_tokenSource_cmdCannotBeUsedWithScopes(t *testing.T) {
+	c := map[string]string{
+		"cmd-path": "foo",
+		"scopes":   "A,B"}
+	if _, err := tokenSource(true, c); err == nil {
+		t.Fatal("expected error when scopes is used with cmd-path")
+	}
+}
+
+func Test_tokenSource_applicationDefaultCredentials_fails(t *testing.T) {
+	// try to use empty ADC file
+	fakeTokenFile, err := ioutil.TempFile("", "adctoken")
+	if err != nil {
+		t.Fatalf("failed to create fake token file: +%v", err)
+	}
+	fakeTokenFile.Close()
+	defer os.Remove(fakeTokenFile.Name())
+
+	os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", fakeTokenFile.Name())
+	defer os.Unsetenv("GOOGLE_APPLICATION_CREDENTIALS")
+	if _, err := tokenSource(false, map[string]string{}); err == nil {
+		t.Fatalf("expected error because specified ADC token file is not a JSON")
+	}
+}
+
+func Test_tokenSource_applicationDefaultCredentials(t *testing.T) {
+	fakeTokenFile, err := ioutil.TempFile("", "adctoken")
+	if err != nil {
+		t.Fatalf("failed to create fake token file: +%v", err)
+	}
+	fakeTokenFile.Close()
+	defer os.Remove(fakeTokenFile.Name())
+	if err := ioutil.WriteFile(fakeTokenFile.Name(), []byte(`{"type":"service_account"}`), 0600); err != nil {
+		t.Fatalf("failed to write to fake token file: %+v", err)
+	}
+
+	os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", fakeTokenFile.Name())
+	defer os.Unsetenv("GOOGLE_APPLICATION_CREDENTIALS")
+	ts, err := tokenSource(false, map[string]string{})
+	if err != nil {
+		t.Fatalf("failed to get a token source: %+v", err)
+	}
+	if ts == nil {
+		t.Fatal("returned nil token source")
+	}
+}
+
+func Test_parseScopes(t *testing.T) {
+	cases := []struct {
+		in  map[string]string
+		out []string
+	}{
+		{
+			map[string]string{},
+			[]string{
+				"https://www.googleapis.com/auth/cloud-platform",
+				"https://www.googleapis.com/auth/userinfo.email"},
+		},
+		{
+			map[string]string{"scopes": ""},
+			[]string{},
+		},
+		{
+			map[string]string{"scopes": "A,B,C"},
+			[]string{"A", "B", "C"},
+		},
+	}
+
+	for _, c := range cases {
+		got := parseScopes(c.in)
+		if !reflect.DeepEqual(got, c.out) {
+			t.Errorf("expected=%v, got=%v", c.out, got)
+		}
+	}
+}
+
+func errEquiv(got, want error) bool {
+	if got == want {
+		return true
+	}
+	if got != nil && want != nil {
+		return strings.Contains(got.Error(), want.Error())
+	}
+	return false
+}
+
+func TestCmdTokenSource(t *testing.T) {
+	execCommand = fakeExec
+	fakeExpiry := time.Date(2016, 10, 31, 22, 31, 9, 123000000, time.UTC)
+	customFmt := "2006-01-02 15:04:05.999999999"
+
+	tests := []struct {
+		name             string
+		gcpConfig        map[string]string
+		tok              *oauth2.Token
+		newErr, tokenErr error
+	}{
+		{
+			"default",
+			map[string]string{
+				"cmd-path": "/default/no/args",
+			},
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      fakeExpiry,
+			},
+			nil,
+			nil,
+		},
+		{
+			"default legacy args",
+			map[string]string{
+				"cmd-path": "/default/legacy/args arg1 arg2 arg3",
+			},
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      fakeExpiry,
+			},
+			nil,
+			nil,
+		},
+
+		{
+			"custom keys",
+			map[string]string{
+				"cmd-path":   "/space in path/customkeys",
+				"cmd-args":   "can haz auth",
+				"token-key":  "{.token}",
+				"expiry-key": "{.token_expiry.datetime}",
+				"time-fmt":   customFmt,
+			},
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      fakeExpiry,
+			},
+			nil,
+			nil,
+		},
+		{
+			"missing cmd",
+			map[string]string{
+				"cmd-path": "",
+			},
+			nil,
+			fmt.Errorf("missing access token cmd"),
+			nil,
+		},
+		{
+			"missing token-key",
+			map[string]string{
+				"cmd-path":  "missing/tokenkey/noargs",
+				"token-key": "{.token}",
+			},
+			nil,
+			nil,
+			fmt.Errorf("error parsing token-key %q", "{.token}"),
+		},
+
+		{
+			"missing expiry-key",
+			map[string]string{
+				"cmd-path":   "missing/expirykey/legacyargs split on whitespace",
+				"expiry-key": "{.expiry}",
+			},
+			nil,
+			nil,
+			fmt.Errorf("error parsing expiry-key %q", "{.expiry}"),
+		},
+		{
+			"invalid expiry timestamp",
+			map[string]string{
+				"cmd-path": "invalid expiry/timestamp",
+				"cmd-args": "foo --bar --baz=abc,def",
+			},
+			&oauth2.Token{
+				AccessToken: "faketoken",
+				TokenType:   "Bearer",
+				Expiry:      time.Time{},
+			},
+			nil,
+			nil,
+		},
+		{
+			"bad JSON",
+			map[string]string{
+				"cmd-path": "badjson",
+			},
+			nil,
+			nil,
+			fmt.Errorf("invalid character '-' after object key:value pair"),
+		},
+	}
+
+	for _, tc := range tests {
+		provider, err := newGCPAuthProvider("", tc.gcpConfig, nil /* persister */)
+		if !errEquiv(err, tc.newErr) {
+			t.Errorf("%q newGCPAuthProvider error: got %v, want %v", tc.name, err, tc.newErr)
+			continue
+		}
+		if err != nil {
+			continue
+		}
+		ts := provider.(*gcpAuthProvider).tokenSource.(*cachedTokenSource).source.(*commandTokenSource)
+		wantCmd = append([]string{ts.cmd}, ts.args...)
+		tok, err := ts.Token()
+		if !errEquiv(err, tc.tokenErr) {
+			t.Errorf("%q Token() error: got %v, want %v", tc.name, err, tc.tokenErr)
+		}
+		if !reflect.DeepEqual(tok, tc.tok) {
+			t.Errorf("%q Token() got %v, want %v", tc.name, tok, tc.tok)
+		}
+	}
+}
+
+type fakePersister struct {
+	lk    sync.Mutex
+	cache map[string]string
+}
+
+func (f *fakePersister) Persist(cache map[string]string) error {
+	f.lk.Lock()
+	defer f.lk.Unlock()
+	f.cache = map[string]string{}
+	for k, v := range cache {
+		f.cache[k] = v
+	}
+	return nil
+}
+
+func (f *fakePersister) read() map[string]string {
+	ret := map[string]string{}
+	f.lk.Lock()
+	defer f.lk.Unlock()
+	for k, v := range f.cache {
+		ret[k] = v
+	}
+	return ret
+}
+
+type fakeTokenSource struct {
+	token *oauth2.Token
+	err   error
+}
+
+func (f *fakeTokenSource) Token() (*oauth2.Token, error) {
+	return f.token, f.err
+}
+
+func TestCachedTokenSource(t *testing.T) {
+	tok := &oauth2.Token{AccessToken: "fakeaccesstoken"}
+	persister := &fakePersister{}
+	source := &fakeTokenSource{
+		token: tok,
+		err:   nil,
+	}
+	cache := map[string]string{
+		"foo": "bar",
+		"baz": "bazinga",
+	}
+	ts, err := newCachedTokenSource("fakeaccesstoken", "", persister, source, cache)
+	if err != nil {
+		t.Fatal(err)
+	}
+	var wg sync.WaitGroup
+	wg.Add(10)
+	for i := 0; i < 10; i++ {
+		go func() {
+			_, err := ts.Token()
+			if err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+	cache["access-token"] = "fakeaccesstoken"
+	cache["expiry"] = tok.Expiry.Format(time.RFC3339Nano)
+	if got := persister.read(); !reflect.DeepEqual(got, cache) {
+		t.Errorf("got cache %v, want %v", got, cache)
+	}
+}
+
+type MockTransport struct {
+	res *http.Response
+}
+
+func (t *MockTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	return t.res, nil
+}
+
+func Test_cmdTokenSource_roundTrip(t *testing.T) {
+
+	accessToken := "fakeToken"
+	fakeExpiry := time.Now().Add(time.Hour)
+	fakeExpiryStr := fakeExpiry.Format(time.RFC3339Nano)
+	fs := &fakeTokenSource{
+		token: &oauth2.Token{
+			AccessToken: accessToken,
+			Expiry:      fakeExpiry,
+		},
+	}
+
+	cmdCache := map[string]string{
+		"cmd-path": "/path/to/tokensource/cmd",
+		"cmd-args": "--output=json",
+	}
+	cmdCacheUpdated := map[string]string{
+		"cmd-path":     "/path/to/tokensource/cmd",
+		"cmd-args":     "--output=json",
+		"access-token": accessToken,
+		"expiry":       fakeExpiryStr,
+	}
+	simpleCacheUpdated := map[string]string{
+		"access-token": accessToken,
+		"expiry":       fakeExpiryStr,
+	}
+
+	tests := []struct {
+		name                     string
+		res                      http.Response
+		baseCache, expectedCache map[string]string
+	}{
+		{
+			"Unauthorized",
+			http.Response{StatusCode: http.StatusUnauthorized},
+			make(map[string]string),
+			make(map[string]string),
+		},
+		{
+			"Unauthorized, nonempty defaultCache",
+			http.Response{StatusCode: http.StatusUnauthorized},
+			cmdCache,
+			cmdCache,
+		},
+		{
+			"Authorized",
+			http.Response{StatusCode: http.StatusOK},
+			make(map[string]string),
+			simpleCacheUpdated,
+		},
+		{
+			"Authorized, nonempty defaultCache",
+			http.Response{StatusCode: http.StatusOK},
+			cmdCache,
+			cmdCacheUpdated,
+		},
+	}
+
+	persister := &fakePersister{}
+	req := http.Request{Header: http.Header{}}
+
+	for _, tc := range tests {
+		cts, err := newCachedTokenSource(accessToken, fakeExpiry.String(), persister, fs, tc.baseCache)
+		if err != nil {
+			t.Fatalf("unexpected error from newCachedTokenSource: %v", err)
+		}
+		authProvider := gcpAuthProvider{cts, persister}
+
+		fakeTransport := MockTransport{&tc.res}
+		transport := (authProvider.WrapTransport(&fakeTransport))
+		// call Token to persist/update cache
+		if _, err := cts.Token(); err != nil {
+			t.Fatalf("unexpected error from cachedTokenSource.Token(): %v", err)
+		}
+
+		transport.RoundTrip(&req)
+
+		if got := persister.read(); !reflect.DeepEqual(got, tc.expectedCache) {
+			t.Errorf("got cache %v, want %v", got, tc.expectedCache)
+		}
+	}
+
+}
--- a/rest/request.go
+++ b/rest/request.go
@@ -34,6 +34,7 @@ import (
 	"time"

 	"golang.org/x/net/http2"
+
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -116,8 +117,11 @@ type Request struct {
 	subresource  string

 	// output
-	err  error
-	body io.Reader
+	err error
+
+	// only one of body / bodyBytes may be set. requests using body are not retriable.
+	body      io.Reader
+	bodyBytes []byte

 	retryFn requestRetryFunc
 }
@@ -443,12 +447,15 @@ func (r *Request) Body(obj interface{}) *Request {
 			return r
 		}
 		glogBody("Request Body", data)
-		r.body = bytes.NewReader(data)
+		r.body = nil
+		r.bodyBytes = data
 	case []byte:
 		glogBody("Request Body", t)
-		r.body = bytes.NewReader(t)
+		r.body = nil
+		r.bodyBytes = t
 	case io.Reader:
 		r.body = t
+		r.bodyBytes = nil
 	case runtime.Object:
 		// callers may pass typed interface pointers, therefore we must check nil with reflection
 		if reflect.ValueOf(t).IsNil() {
@@ -465,7 +472,8 @@ func (r *Request) Body(obj interface{}) *Request {
 			return r
 		}
 		glogBody("Request Body", data)
-		r.body = bytes.NewReader(data)
+		r.body = nil
+		r.bodyBytes = data
 		r.SetHeader("Content-Type", r.c.content.ContentType)
 	default:
 		r.err = fmt.Errorf("unknown type used for body: %+v", obj)
@@ -508,6 +516,87 @@ func (r *Request) URL() *url.URL {
 	return finalURL
 }

+// finalURLTemplate is similar to URL(), but will make all specific parameter values equal
+// - instead of name or namespace, "{name}" and "{namespace}" will be used, and all query
+// parameters will be reset. This creates a copy of the url so as not to change the
+// underlying object.
+func (r Request) finalURLTemplate() url.URL {
+	newParams := url.Values{}
+	v := []string{"{value}"}
+	for k := range r.params {
+		newParams[k] = v
+	}
+	r.params = newParams
+	u := r.URL()
+	if u == nil {
+		return url.URL{}
+	}
+
+	segments := strings.Split(u.Path, "/")
+	groupIndex := 0
+	index := 0
+	trimmedBasePath := ""
+	if r.c.base != nil && strings.Contains(u.Path, r.c.base.Path) {
+		p := strings.TrimPrefix(u.Path, r.c.base.Path)
+		if !strings.HasPrefix(p, "/") {
+			p = "/" + p
+		}
+		// store the base path that we have trimmed so we can append it
+		// before returning the URL
+		trimmedBasePath = r.c.base.Path
+		segments = strings.Split(p, "/")
+		groupIndex = 1
+	}
+	if len(segments) <= 2 {
+		return *u
+	}
+
+	const CoreGroupPrefix = "api"
+	const NamedGroupPrefix = "apis"
+	isCoreGroup := segments[groupIndex] == CoreGroupPrefix
+	isNamedGroup := segments[groupIndex] == NamedGroupPrefix
+	if isCoreGroup {
+		// checking the case of core group with /api/v1/... format
+		index = groupIndex + 2
+	} else if isNamedGroup {
+		// checking the case of named group with /apis/apps/v1/... format
+		index = groupIndex + 3
+	} else {
+		// this should not happen that the only two possibilities are /api... and /apis..., just want to put an
+		// outlet here in case more API groups are added in future if ever possible:
+		// https://kubernetes.io/docs/concepts/overview/kubernetes-api/#api-groups
+		// if a wrong API groups name is encountered, return the {prefix} for url.Path
+		u.Path = "/{prefix}"
+		u.RawQuery = ""
+		return *u
+	}
+	// switch segLength := len(segments) - index; segLength {
+	switch {
+	// case len(segments) - index == 1:
+	// resource (with no name) do nothing
+	case len(segments)-index == 2:
+		// /$RESOURCE/$NAME: replace $NAME with {name}
+		segments[index+1] = "{name}"
+	case len(segments)-index == 3:
+		if segments[index+2] == "finalize" || segments[index+2] == "status" {
+			// /$RESOURCE/$NAME/$SUBRESOURCE: replace $NAME with {name}
+			segments[index+1] = "{name}"
+		} else {
+			// /namespace/$NAMESPACE/$RESOURCE: replace $NAMESPACE with {namespace}
+			segments[index+1] = "{namespace}"
+		}
+	case len(segments)-index >= 4:
+		segments[index+1] = "{namespace}"
+		// /namespace/$NAMESPACE/$RESOURCE/$NAME: replace $NAMESPACE with {namespace},  $NAME with {name}
+		if segments[index+3] != "finalize" && segments[index+3] != "status" {
+			// /$RESOURCE/$NAME/$SUBRESOURCE: replace $NAME with {name}
+			segments[index+3] = "{name}"
+		}
+	}
+	u.Path = path.Join(trimmedBasePath, path.Join(segments...))
+	return *u
+}
+
 func (r *Request) tryThrottleWithInfo(ctx context.Context, retryInfo string) error {
 	if r.rateLimiter == nil {
 		return nil
@@ -537,7 +626,7 @@ func (r *Request) tryThrottleWithInfo(ctx context.Context, retryInfo string) err
 		// but we use a throttled logger to prevent spamming.
 		globalThrottledLogger.Infof("%s", message)
 	}
-	metrics.RateLimiterLatency.Observe(ctx, r.verb, *r.URL(), latency)
+	metrics.RateLimiterLatency.Observe(ctx, r.verb, r.finalURLTemplate(), latency)

 	return err
 }
@@ -744,9 +833,7 @@ func (r *Request) Stream(ctx context.Context) (io.ReadCloser, error) {
 		if err != nil {
 			return nil, err
 		}
-		if r.body != nil {
-			req.Body = ioutil.NopCloser(r.body)
-		}
+
 		resp, err := client.Do(req)
 		updateURLMetrics(ctx, r, resp, err)
 		retry.After(ctx, r, resp, err)
@@ -808,8 +895,20 @@ func (r *Request) requestPreflightCheck() error {
 }

 func (r *Request) newHTTPRequest(ctx context.Context) (*http.Request, error) {
+	var body io.Reader
+	switch {
+	case r.body != nil && r.bodyBytes != nil:
+		return nil, fmt.Errorf("cannot set both body and bodyBytes")
+	case r.body != nil:
+		body = r.body
+	case r.bodyBytes != nil:
+		// Create a new reader specifically for this request.
+		// Giving each request a dedicated reader allows retries to avoid races resetting the request body.
+		body = bytes.NewReader(r.bodyBytes)
+	}
+
 	url := r.URL().String()
-	req, err := http.NewRequest(r.verb, url, r.body)
+	req, err := http.NewRequest(r.verb, url, body)
 	if err != nil {
 		return nil, err
 	}
@@ -826,7 +925,7 @@ func (r *Request) request(ctx context.Context, fn func(*http.Request, *http.Resp
 	// Metrics for total request latency
 	start := time.Now()
 	defer func() {
-		metrics.RequestLatency.Observe(ctx, r.verb, *r.URL(), time.Since(start))
+		metrics.RequestLatency.Observe(ctx, r.verb, r.finalURLTemplate(), time.Since(start))
 	}()

 	if r.err != nil {
--- a/rest/request_test.go
+++ b/rest/request_test.go
@@ -338,6 +338,206 @@ func TestResultIntoWithNoBodyReturnsErr(t *testing.T) {
 	}
 }

+func TestURLTemplate(t *testing.T) {
+	uri, _ := url.Parse("http://localhost/some/base/url/path")
+	uriSingleSlash, _ := url.Parse("http://localhost/")
+	testCases := []struct {
+		Request          *Request
+		ExpectedFullURL  string
+		ExpectedFinalURL string
+	}{
+		{
+			// non dynamic client
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("POST").
+				Prefix("api", "v1").Resource("r1").Namespace("ns").Name("nm").Param("p0", "v0"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/api/v1/namespaces/ns/r1/nm?p0=v0",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D?p0=%7Bvalue%7D",
+		},
+		{
+			// non dynamic client with wrong api group
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("POST").
+				Prefix("pre1", "v1").Resource("r1").Namespace("ns").Name("nm").Param("p0", "v0"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/pre1/v1/namespaces/ns/r1/nm?p0=v0",
+			ExpectedFinalURL: "http://localhost/%7Bprefix%7D",
+		},
+		{
+			// dynamic client with core group + namespace + resourceResource (with name)
+			// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/api/v1/namespaces/ns/r1/name1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/api/v1/namespaces/ns/r1/name1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/g1/v1/namespaces/ns/r1/name1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/g1/v1/namespaces/ns/r1/name1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/g1/v1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D",
+		},
+		{
+			// dynamic client with core group + namespace + resourceResource (with NO name)
+			// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/api/v1/namespaces/ns/r1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/api/v1/namespaces/ns/r1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r1",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with NO name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/g1/v1/namespaces/ns/r1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/g1/v1/namespaces/ns/r1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/g1/v1/namespaces/%7Bnamespace%7D/r1",
+		},
+		{
+			// dynamic client with core group + resourceResource (with name)
+			// /api/$RESOURCEVERSION/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/api/v1/r1/name1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/api/v1/r1/name1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/r1/%7Bname%7D",
+		},
+		{
+			// dynamic client with named group + resourceResource (with name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/g1/v1/r1/name1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/g1/v1/r1/name1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/g1/v1/r1/%7Bname%7D",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with name) + subresource
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME/$SUBRESOURCE
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/%7Bname%7D/finalize",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/%7Bname%7D",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with NO name) + subresource
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%SUBRESOURCE
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/finalize"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/finalize",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/finalize",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with NO name) + subresource
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%SUBRESOURCE
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/status"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/status",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/status",
+		},
+		{
+			// dynamic client with named group + namespace + resourceResource (with no name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces",
+		},
+		{
+			// dynamic client with named group + resourceResource (with name) + subresource
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/finalize"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/finalize",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bname%7D/finalize",
+		},
+		{
+			// dynamic client with named group + resourceResource (with name) + subresource
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces/status"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/status",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bname%7D/status",
+		},
+		{
+			// dynamic client with named group + resourceResource (with name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces/namespaces"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bname%7D",
+		},
+		{
+			// dynamic client with named group + resourceResource (with no name)
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/apis/namespaces/namespaces/namespaces"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces",
+		},
+		{
+			// dynamic client with wrong api group + namespace + resourceResource (with name) + subresource
+			// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME/$SUBRESOURCE
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/pre1/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/pre1/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize",
+			ExpectedFinalURL: "http://localhost/%7Bprefix%7D",
+		},
+		{
+			// dynamic client with core group + namespace + resourceResource (with name) where baseURL is a single /
+			// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uriSingleSlash, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/api/v1/namespaces/ns/r2/name1"),
+			ExpectedFullURL:  "http://localhost/api/v1/namespaces/ns/r2/name1",
+			ExpectedFinalURL: "http://localhost/api/v1/namespaces/%7Bnamespace%7D/r2/%7Bname%7D",
+		},
+		{
+			// dynamic client with core group + namespace + resourceResource (with name) where baseURL is 'some/base/url/path'
+			// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
+			Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/api/v1/namespaces/ns/r3/name1"),
+			ExpectedFullURL:  "http://localhost/some/base/url/path/api/v1/namespaces/ns/r3/name1",
+			ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r3/%7Bname%7D",
+		},
+		{
+			// dynamic client where baseURL is a single /
+			// /
+			Request: NewRequestWithClient(uriSingleSlash, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/"),
+			ExpectedFullURL:  "http://localhost/",
+			ExpectedFinalURL: "http://localhost/",
+		},
+		{
+			// dynamic client where baseURL is a single /
+			// /version
+			Request: NewRequestWithClient(uriSingleSlash, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
+				Prefix("/version"),
+			ExpectedFullURL:  "http://localhost/version",
+			ExpectedFinalURL: "http://localhost/version",
+		},
+	}
+	for i, testCase := range testCases {
+		r := testCase.Request
+		full := r.URL()
+		if full.String() != testCase.ExpectedFullURL {
+			t.Errorf("%d: unexpected initial URL: %s %s", i, full, testCase.ExpectedFullURL)
+		}
+		actualURL := r.finalURLTemplate()
+		actual := actualURL.String()
+		if actual != testCase.ExpectedFinalURL {
+			t.Errorf("%d: unexpected URL template: %s %s", i, actual, testCase.ExpectedFinalURL)
+		}
+		if r.URL().String() != full.String() {
+			t.Errorf("%d, creating URL template changed request: %s -> %s", i, full.String(), r.URL().String())
+		}
+	}
+}
+
 func TestTransformResponse(t *testing.T) {
 	invalid := []byte("aaaaa")
 	uri, _ := url.Parse("http://localhost")
@@ -923,42 +1123,6 @@ func TestRequestWatch(t *testing.T) {
 			},
 			Empty: true,
 		},
-		{
-			name: "max retries 1, server returns a retry-after response, request body seek error",
-			Request: &Request{
-				body: &readSeeker{err: io.EOF},
-				c: &RESTClient{
-					base: &url.URL{},
-				},
-			},
-			maxRetries:       1,
-			attemptsExpected: 1,
-			serverReturns: []responseErr{
-				{response: retryAfterResponse(), err: nil},
-			},
-			Err: true,
-			ErrFn: func(err error) bool {
-				return !apierrors.IsInternalError(err) && strings.Contains(err.Error(), "failed to reset the request body while retrying a request: EOF")
-			},
-		},
-		{
-			name: "max retries 1, server returns a retryable error, request body seek error",
-			Request: &Request{
-				body: &readSeeker{err: io.EOF},
-				c: &RESTClient{
-					base: &url.URL{},
-				},
-			},
-			maxRetries:       1,
-			attemptsExpected: 1,
-			serverReturns: []responseErr{
-				{response: nil, err: io.EOF},
-			},
-			Err: true,
-			ErrFn: func(err error) bool {
-				return !apierrors.IsInternalError(err)
-			},
-		},
 		{
 			name: "max retries 2, server always returns a response with Retry-After header",
 			Request: &Request{
@@ -1120,7 +1284,7 @@ func TestRequestStream(t *testing.T) {
 			},
 		},
 		{
-			name: "max retries 1, server returns a retry-after response, request body seek error",
+			name: "max retries 1, server returns a retry-after response, non-bytes request, no retry",
 			Request: &Request{
 				body: &readSeeker{err: io.EOF},
 				c: &RESTClient{
@@ -1133,9 +1297,6 @@ func TestRequestStream(t *testing.T) {
 				{response: retryAfterResponse(), err: nil},
 			},
 			Err: true,
-			ErrFn: func(err error) bool {
-				return !apierrors.IsInternalError(err) && strings.Contains(err.Error(), "failed to reset the request body while retrying a request: EOF")
-			},
 		},
 		{
 			name: "max retries 2, server always returns a response with Retry-After header",
@@ -1817,20 +1978,24 @@ func TestBody(t *testing.T) {
 			}
 		}

-		if r.body == nil {
+		req, err := r.newHTTPRequest(context.Background())
+		if err != nil {
+			t.Fatal(err)
+		}
+		if req.Body == nil {
 			if len(tt.expected) != 0 {
-				t.Errorf("%d: r.body = %q; want %q", i, r.body, tt.expected)
+				t.Errorf("%d: req.Body = %q; want %q", i, req.Body, tt.expected)
 			}
 			continue
 		}
 		buf := make([]byte, len(tt.expected))
-		if _, err := r.body.Read(buf); err != nil {
-			t.Errorf("%d: r.body.Read error: %v", i, err)
+		if _, err := req.Body.Read(buf); err != nil {
+			t.Errorf("%d: req.Body.Read error: %v", i, err)
 			continue
 		}
 		body := string(buf)
 		if body != tt.expected {
-			t.Errorf("%d: r.body = %q; want %q", i, body, tt.expected)
+			t.Errorf("%d: req.Body = %q; want %q", i, body, tt.expected)
 		}
 	}
 }
@@ -2441,6 +2606,7 @@ func TestRequestWithRetry(t *testing.T) {
 	tests := []struct {
 		name                         string
 		body                         io.Reader
+		bodyBytes                    []byte
 		serverReturns                responseErr
 		errExpected                  error
 		errContains                  string
@@ -2448,53 +2614,53 @@ func TestRequestWithRetry(t *testing.T) {
 		roundTripInvokedExpected     int
 	}{
 		{
-			name:                         "server returns retry-after response, request body is not io.Seeker, retry goes ahead",
-			body:                         ioutil.NopCloser(bytes.NewReader([]byte{})),
+			name:                         "server returns retry-after response, no request body, retry goes ahead",
+			bodyBytes:                    nil,
 			serverReturns:                responseErr{response: retryAfterResponse(), err: nil},
 			errExpected:                  nil,
 			transformFuncInvokedExpected: 1,
 			roundTripInvokedExpected:     2,
 		},
 		{
-			name:                         "server returns retry-after response, request body Seek returns error, retry aborted",
-			body:                         &readSeeker{err: io.EOF},
-			serverReturns:                responseErr{response: retryAfterResponse(), err: nil},
-			errExpected:                  nil,
-			transformFuncInvokedExpected: 0,
-			roundTripInvokedExpected:     1,
-		},
-		{
-			name:                         "server returns retry-after response, request body Seek returns no error, retry goes ahead",
-			body:                         &readSeeker{err: nil},
+			name:                         "server returns retry-after response, bytes request body, retry goes ahead",
+			bodyBytes:                    []byte{},
 			serverReturns:                responseErr{response: retryAfterResponse(), err: nil},
 			errExpected:                  nil,
 			transformFuncInvokedExpected: 1,
 			roundTripInvokedExpected:     2,
 		},
 		{
-			name:                         "server returns retryable err, request body is not io.Seek, retry goes ahead",
-			body:                         ioutil.NopCloser(bytes.NewReader([]byte{})),
-			serverReturns:                responseErr{response: nil, err: io.ErrUnexpectedEOF},
-			errExpected:                  io.ErrUnexpectedEOF,
-			transformFuncInvokedExpected: 0,
-			roundTripInvokedExpected:     2,
-		},
-		{
-			name:                         "server returns retryable err, request body Seek returns error, retry aborted",
-			body:                         &readSeeker{err: io.EOF},
-			serverReturns:                responseErr{response: nil, err: io.ErrUnexpectedEOF},
-			errContains:                  "failed to reset the request body while retrying a request: EOF",
-			transformFuncInvokedExpected: 0,
+			name:                         "server returns retry-after response, opaque request body, retry aborted",
+			body:                         &readSeeker{},
+			serverReturns:                responseErr{response: retryAfterResponse(), err: nil},
+			errExpected:                  nil,
+			transformFuncInvokedExpected: 1,
 			roundTripInvokedExpected:     1,
 		},
 		{
-			name:                         "server returns retryable err, request body Seek returns no err, retry goes ahead",
-			body:                         &readSeeker{err: nil},
+			name:                         "server returns retryable err, no request body, retry goes ahead",
+			bodyBytes:                    nil,
 			serverReturns:                responseErr{response: nil, err: io.ErrUnexpectedEOF},
 			errExpected:                  io.ErrUnexpectedEOF,
 			transformFuncInvokedExpected: 0,
 			roundTripInvokedExpected:     2,
 		},
+		{
+			name:                         "server returns retryable err, bytes request body, retry goes ahead",
+			bodyBytes:                    []byte{},
+			serverReturns:                responseErr{response: nil, err: io.ErrUnexpectedEOF},
+			errExpected:                  io.ErrUnexpectedEOF,
+			transformFuncInvokedExpected: 0,
+			roundTripInvokedExpected:     2,
+		},
+		{
+			name:                         "server returns retryable err, opaque request body, retry aborted",
+			body:                         &readSeeker{},
+			serverReturns:                responseErr{response: nil, err: io.ErrUnexpectedEOF},
+			errExpected:                  io.ErrUnexpectedEOF,
+			transformFuncInvokedExpected: 0,
+			roundTripInvokedExpected:     1,
+		},
 	}

 	for _, test := range tests {
@@ -2665,7 +2831,8 @@ func testRequestWithRetry(t *testing.T, key string, doFunc func(ctx context.Cont
 	tests := []struct {
 		name          string
 		verb          string
-		body          func() io.Reader
+		body          io.Reader
+		bodyBytes     []byte
 		maxRetries    int
 		serverReturns []responseErr

@@ -2675,7 +2842,7 @@ func testRequestWithRetry(t *testing.T, key string, doFunc func(ctx context.Cont
 		{
 			name:       "server always returns retry-after response",
 			verb:       "GET",
-			body:       func() io.Reader { return bytes.NewReader([]byte{}) },
+			bodyBytes:  []byte{},
 			maxRetries: 2,
 			serverReturns: []responseErr{
 				{response: retryAfterResponse(), err: nil},
@@ -2703,7 +2870,7 @@ func testRequestWithRetry(t *testing.T, key string, doFunc func(ctx context.Cont
 		{
 			name:       "server always returns retryable error",
 			verb:       "GET",
-			body:       func() io.Reader { return bytes.NewReader([]byte{}) },
+			bodyBytes:  []byte{},
 			maxRetries: 2,
 			serverReturns: []responseErr{
 				{response: nil, err: io.EOF},
@@ -2732,7 +2899,7 @@ func testRequestWithRetry(t *testing.T, key string, doFunc func(ctx context.Cont
 		{
 			name:       "server returns success on the final retry",
 			verb:       "GET",
-			body:       func() io.Reader { return bytes.NewReader([]byte{}) },
+			bodyBytes:  []byte{},
 			maxRetries: 2,
 			serverReturns: []responseErr{
 				{response: retryAfterResponse(), err: nil},
@@ -2779,13 +2946,10 @@ func testRequestWithRetry(t *testing.T, key string, doFunc func(ctx context.Cont
 				return resp, test.serverReturns[attempts].err
 			})

-			reqCountGot := newCount()
-			reqRecorder := newReadTracker(reqCountGot)
-			reqRecorder.delegated = test.body()
-
 			req := &Request{
-				verb: test.verb,
-				body: reqRecorder,
+				verb:      test.verb,
+				body:      test.body,
+				bodyBytes: test.bodyBytes,
 				c: &RESTClient{
 					content: defaultContentConfig(),
 					Client:  client,
@@ -2805,9 +2969,6 @@ func testRequestWithRetry(t *testing.T, key string, doFunc func(ctx context.Cont
 				t.Errorf("Expected retries: %d, but got: %d", expected.attempts, attempts)
 			}

-			if !reflect.DeepEqual(expected.reqCount.seeks, reqCountGot.seeks) {
-				t.Errorf("Expected request body to have seek invocation: %v, but got: %v", expected.reqCount.seeks, reqCountGot.seeks)
-			}
 			if expected.respCount.closes != respCountGot.getCloseCount() {
 				t.Errorf("Expected response body Close to be invoked %d times, but got: %d", expected.respCount.closes, respCountGot.getCloseCount())
 			}
@@ -3064,8 +3225,8 @@ func testRetryWithRateLimiterBackoffAndMetrics(t *testing.T, key string, doFunc
 				t.Fatalf("Wrong test setup - did not find expected for: %s", key)
 			}
 			req := &Request{
-				verb: "GET",
-				body: bytes.NewReader([]byte{}),
+				verb:      "GET",
+				bodyBytes: []byte{},
 				c: &RESTClient{
 					base:        base,
 					content:     defaultContentConfig(),
@@ -3200,8 +3361,8 @@ func testWithRetryInvokeOrder(t *testing.T, key string, doFunc func(ctx context.
 				t.Fatalf("Wrong test setup - did not find expected for: %s", key)
 			}
 			req := &Request{
-				verb: "GET",
-				body: bytes.NewReader([]byte{}),
+				verb:      "GET",
+				bodyBytes: []byte{},
 				c: &RESTClient{
 					base:    base,
 					content: defaultContentConfig(),
@@ -3375,8 +3536,8 @@ func testWithWrapPreviousError(t *testing.T, doFunc func(ctx context.Context, r
 				t.Fatalf("Failed to create new HTTP request - %v", err)
 			}
 			req := &Request{
-				verb: "GET",
-				body: bytes.NewReader([]byte{}),
+				verb:      "GET",
+				bodyBytes: []byte{},
 				c: &RESTClient{
 					base:    base,
 					content: defaultContentConfig(),
@@ -3611,104 +3772,3 @@ func TestTransportConcurrency(t *testing.T) {
 		})
 	}
 }
-
-// TODO: see if we can consolidate the other trackers into one.
-type requestBodyTracker struct {
-	io.ReadSeeker
-	f func(string)
-}
-
-func (t *requestBodyTracker) Read(p []byte) (int, error) {
-	t.f("Request.Body.Read")
-	return t.ReadSeeker.Read(p)
-}
-
-func (t *requestBodyTracker) Seek(offset int64, whence int) (int64, error) {
-	t.f("Request.Body.Seek")
-	return t.ReadSeeker.Seek(offset, whence)
-}
-
-type responseBodyTracker struct {
-	io.ReadCloser
-	f func(string)
-}
-
-func (t *responseBodyTracker) Read(p []byte) (int, error) {
-	t.f("Response.Body.Read")
-	return t.ReadCloser.Read(p)
-}
-
-func (t *responseBodyTracker) Close() error {
-	t.f("Response.Body.Close")
-	return t.ReadCloser.Close()
-}
-
-type recorder struct {
-	order []string
-}
-
-func (r *recorder) record(call string) {
-	r.order = append(r.order, call)
-}
-
-func TestRequestBodyResetOrder(t *testing.T) {
-	recorder := &recorder{}
-	respBodyTracker := &responseBodyTracker{
-		ReadCloser: nil, // the server will fill it
-		f:          recorder.record,
-	}
-
-	var attempts int
-	client := clientForFunc(func(req *http.Request) (*http.Response, error) {
-		defer func() {
-			attempts++
-		}()
-
-		// read the request body.
-		ioutil.ReadAll(req.Body)
-
-		// first attempt, we send a retry-after
-		if attempts == 0 {
-			resp := retryAfterResponse()
-			respBodyTracker.ReadCloser = ioutil.NopCloser(bytes.NewReader([]byte{}))
-			resp.Body = respBodyTracker
-			return resp, nil
-		}
-
-		return &http.Response{StatusCode: http.StatusOK}, nil
-	})
-
-	reqBodyTracker := &requestBodyTracker{
-		ReadSeeker: bytes.NewReader([]byte{}), // empty body ensures one Read operation at most.
-		f:          recorder.record,
-	}
-	req := &Request{
-		verb: "POST",
-		body: reqBodyTracker,
-		c: &RESTClient{
-			content: defaultContentConfig(),
-			Client:  client,
-		},
-		backoff:    &noSleepBackOff{},
-		maxRetries: 1,
-		retryFn:    defaultRequestRetryFn,
-	}
-
-	req.Do(context.Background())
-
-	expected := []string{
-		// 1st attempt: the server handler reads the request body
-		"Request.Body.Read",
-		// the server sends a retry-after, client reads the
-		// response body, and closes it
-		"Response.Body.Read",
-		"Response.Body.Close",
-		// client retry logic seeks to the beginning of the request body
-		"Request.Body.Seek",
-		// 2nd attempt: the server reads the request body
-		"Request.Body.Read",
-	}
-	if !reflect.DeepEqual(expected, recorder.order) {
-		t.Errorf("Expected invocation request and response body operations for retry do not match: %s", cmp.Diff(expected, recorder.order))
-	}
-}
--- a/rest/with_retry.go
+++ b/rest/with_retry.go
@@ -154,6 +154,11 @@ func (r *withRetry) IsNextRetry(ctx context.Context, restReq *Request, httpReq *
 		return false
 	}

+	if restReq.body != nil {
+		// we have an opaque reader, we can't safely reset it
+		return false
+	}
+
 	r.attempts++
 	r.retryAfter = &RetryAfter{Attempt: r.attempts}
 	if r.attempts > r.maxRetries {
@@ -210,18 +215,6 @@ func (r *withRetry) Before(ctx context.Context, request *Request) error {
 		return nil
 	}

-	// At this point we've made atleast one attempt, post which the response
-	// body should have been fully read and closed in order for it to be safe
-	// to reset the request body before we reconnect, in order for us to reuse
-	// the same TCP connection.
-	if seeker, ok := request.body.(io.Seeker); ok && request.body != nil {
-		if _, err := seeker.Seek(0, io.SeekStart); err != nil {
-			err = fmt.Errorf("failed to reset the request body while retrying a request: %v", err)
-			r.trackPreviousError(err)
-			return err
-		}
-	}
-
 	// if we are here, we have made attempt(s) at least once before.
 	if request.backoff != nil {
 		delay := request.backoff.CalculateBackoff(url)
--- a/rest/with_retry_test.go
+++ b/rest/with_retry_test.go
@@ -17,7 +17,6 @@ limitations under the License.
 package rest

 import (
-	"bytes"
 	"context"
 	"errors"
 	"fmt"
@@ -212,7 +211,7 @@ func TestIsNextRetry(t *testing.T) {
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			restReq := &Request{
-				body: bytes.NewReader([]byte{}),
+				bodyBytes: []byte{},
 				c: &RESTClient{
 					base: &url.URL{},
 				},
--- a/tools/cache/controller.go
+++ b/tools/cache/controller.go
@@ -353,17 +353,6 @@ func NewIndexerInformer(
 	return clientState, newInformer(lw, objType, resyncPeriod, h, clientState, nil)
 }

-// TransformFunc allows for transforming an object before it will be processed
-// and put into the controller cache and before the corresponding handlers will
-// be called on it.
-// TransformFunc (similarly to ResourceEventHandler functions) should be able
-// to correctly handle the tombstone of type cache.DeletedFinalStateUnknown
-//
-// The most common usage pattern is to clean-up some parts of the object to
-// reduce component memory usage if a given component doesn't care about them.
-// given controller doesn't care for them
-type TransformFunc func(interface{}) (interface{}, error)
-
 // NewTransformingInformer returns a Store and a controller for populating
 // the store while also providing event notifications. You should only used
 // the returned Store for Get/List operations; Add/Modify/Deletes will cause
@@ -411,19 +400,11 @@ func processDeltas(
 	// Object which receives event notifications from the given deltas
 	handler ResourceEventHandler,
 	clientState Store,
-	transformer TransformFunc,
 	deltas Deltas,
 ) error {
 	// from oldest to newest
 	for _, d := range deltas {
 		obj := d.Object
-		if transformer != nil {
-			var err error
-			obj, err = transformer(obj)
-			if err != nil {
-				return err
-			}
-		}

 		switch d.Type {
 		case Sync, Replaced, Added, Updated:
@@ -475,6 +456,7 @@ func newInformer(
 	fifo := NewDeltaFIFOWithOptions(DeltaFIFOOptions{
 		KnownObjects:          clientState,
 		EmitDeltaTypeReplaced: true,
+		Transformer:           transformer,
 	})

 	cfg := &Config{
@@ -486,7 +468,7 @@ func newInformer(

 		Process: func(obj interface{}) error {
 			if deltas, ok := obj.(Deltas); ok {
-				return processDeltas(h, clientState, transformer, deltas)
+				return processDeltas(h, clientState, deltas)
 			}
 			return errors.New("object given as Process argument is not Deltas")
 		},
--- a/tools/cache/controller_test.go
+++ b/tools/cache/controller_test.go
@@ -23,7 +23,7 @@ import (
 	"testing"
 	"time"

-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -32,7 +32,7 @@ import (
 	"k8s.io/apimachinery/pkg/watch"
 	fcache "k8s.io/client-go/tools/cache/testing"

-	"github.com/google/gofuzz"
+	fuzz "github.com/google/gofuzz"
 )

 func Example() {
--- a/tools/cache/delta_fifo.go
+++ b/tools/cache/delta_fifo.go
@@ -51,6 +51,10 @@ type DeltaFIFOOptions struct {
 	// When true, `Replaced` events will be sent for items passed to a Replace() call.
 	// When false, `Sync` events will be sent instead.
 	EmitDeltaTypeReplaced bool
+
+	// If set, will be called for objects before enqueueing them. Please
+	// see the comment on TransformFunc for details.
+	Transformer TransformFunc
 }

 // DeltaFIFO is like FIFO, but differs in two ways.  One is that the
@@ -129,8 +133,32 @@ type DeltaFIFO struct {
 	// emitDeltaTypeReplaced is whether to emit the Replaced or Sync
 	// DeltaType when Replace() is called (to preserve backwards compat).
 	emitDeltaTypeReplaced bool
+
+	// Called with every object if non-nil.
+	transformer TransformFunc
 }

+// TransformFunc allows for transforming an object before it will be processed.
+// TransformFunc (similarly to ResourceEventHandler functions) should be able
+// to correctly handle the tombstone of type cache.DeletedFinalStateUnknown.
+//
+// New in v1.27: In such cases, the contained object will already have gone
+// through the transform object separately (when it was added / updated prior
+// to the delete), so the TransformFunc can likely safely ignore such objects
+// (i.e., just return the input object).
+//
+// The most common usage pattern is to clean-up some parts of the object to
+// reduce component memory usage if a given component doesn't care about them.
+//
+// New in v1.27: unless the object is a DeletedFinalStateUnknown, TransformFunc
+// sees the object before any other actor, and it is now safe to mutate the
+// object in place instead of making a copy.
+//
+// Note that TransformFunc is called while inserting objects into the
+// notification queue and is therefore extremely performance sensitive; please
+// do not do anything that will take a long time.
+type TransformFunc func(interface{}) (interface{}, error)
+
 // DeltaType is the type of a change (addition, deletion, etc)
 type DeltaType string

@@ -227,6 +255,7 @@ func NewDeltaFIFOWithOptions(opts DeltaFIFOOptions) *DeltaFIFO {
 		knownObjects: opts.KnownObjects,

 		emitDeltaTypeReplaced: opts.EmitDeltaTypeReplaced,
+		transformer:           opts.Transformer,
 	}
 	f.cond.L = &f.lock
 	return f
@@ -411,6 +440,21 @@ func (f *DeltaFIFO) queueActionLocked(actionType DeltaType, obj interface{}) err
 	if err != nil {
 		return KeyError{obj, err}
 	}
+
+	// Every object comes through this code path once, so this is a good
+	// place to call the transform func.  If obj is a
+	// DeletedFinalStateUnknown tombstone, then the containted inner object
+	// will already have gone through the transformer, but we document that
+	// this can happen. In cases involving Replace(), such an object can
+	// come through multiple times.
+	if f.transformer != nil {
+		var err error
+		obj, err = f.transformer(obj)
+		if err != nil {
+			return err
+		}
+	}
+
 	oldDeltas := f.items[id]
 	newDeltas := append(oldDeltas, Delta{actionType, obj})
 	newDeltas = dedupDeltas(newDeltas)
@@ -566,12 +610,11 @@ func (f *DeltaFIFO) Pop(process PopProcessFunc) (interface{}, error) {
 // using the Sync or Replace DeltaType and then (2) it does some deletions.
 // In particular: for every pre-existing key K that is not the key of
 // an object in `list` there is the effect of
-// `Delete(DeletedFinalStateUnknown{K, O})` where O is current object
-// of K.  If `f.knownObjects == nil` then the pre-existing keys are
-// those in `f.items` and the current object of K is the `.Newest()`
-// of the Deltas associated with K.  Otherwise the pre-existing keys
-// are those listed by `f.knownObjects` and the current object of K is
-// what `f.knownObjects.GetByKey(K)` returns.
+// `Delete(DeletedFinalStateUnknown{K, O})` where O is the latest known
+// object of K. The pre-existing keys are those in the union set of the keys in
+// `f.items` and `f.knownObjects` (if not nil). The last known object for key K is
+// the one present in the last delta in `f.items`. If there is no delta for K
+// in `f.items`, it is the object in `f.knownObjects`
 func (f *DeltaFIFO) Replace(list []interface{}, _ string) error {
 	f.lock.Lock()
 	defer f.lock.Unlock()
@@ -595,56 +638,54 @@ func (f *DeltaFIFO) Replace(list []interface{}, _ string) error {
 		}
 	}

-	if f.knownObjects == nil {
-		// Do deletion detection against our own list.
-		queuedDeletions := 0
-		for k, oldItem := range f.items {
+	// Do deletion detection against objects in the queue
+	queuedDeletions := 0
+	for k, oldItem := range f.items {
+		if keys.Has(k) {
+			continue
+		}
+		// Delete pre-existing items not in the new list.
+		// This could happen if watch deletion event was missed while
+		// disconnected from apiserver.
+		var deletedObj interface{}
+		if n := oldItem.Newest(); n != nil {
+			deletedObj = n.Object
+
+			// if the previous object is a DeletedFinalStateUnknown, we have to extract the actual Object
+			if d, ok := deletedObj.(DeletedFinalStateUnknown); ok {
+				deletedObj = d.Obj
+			}
+		}
+		queuedDeletions++
+		if err := f.queueActionLocked(Deleted, DeletedFinalStateUnknown{k, deletedObj}); err != nil {
+			return err
+		}
+	}
+
+	if f.knownObjects != nil {
+		// Detect deletions for objects not present in the queue, but present in KnownObjects
+		knownKeys := f.knownObjects.ListKeys()
+		for _, k := range knownKeys {
 			if keys.Has(k) {
 				continue
 			}
-			// Delete pre-existing items not in the new list.
-			// This could happen if watch deletion event was missed while
-			// disconnected from apiserver.
-			var deletedObj interface{}
-			if n := oldItem.Newest(); n != nil {
-				deletedObj = n.Object
+			if len(f.items[k]) > 0 {
+				continue
+			}
+
+			deletedObj, exists, err := f.knownObjects.GetByKey(k)
+			if err != nil {
+				deletedObj = nil
+				klog.Errorf("Unexpected error %v during lookup of key %v, placing DeleteFinalStateUnknown marker without object", err, k)
+			} else if !exists {
+				deletedObj = nil
+				klog.Infof("Key %v does not exist in known objects store, placing DeleteFinalStateUnknown marker without object", k)
 			}
 			queuedDeletions++
 			if err := f.queueActionLocked(Deleted, DeletedFinalStateUnknown{k, deletedObj}); err != nil {
 				return err
 			}
 		}
-
-		if !f.populated {
-			f.populated = true
-			// While there shouldn't be any queued deletions in the initial
-			// population of the queue, it's better to be on the safe side.
-			f.initialPopulationCount = keys.Len() + queuedDeletions
-		}
-
-		return nil
-	}
-
-	// Detect deletions not already in the queue.
-	knownKeys := f.knownObjects.ListKeys()
-	queuedDeletions := 0
-	for _, k := range knownKeys {
-		if keys.Has(k) {
-			continue
-		}
-
-		deletedObj, exists, err := f.knownObjects.GetByKey(k)
-		if err != nil {
-			deletedObj = nil
-			klog.Errorf("Unexpected error %v during lookup of key %v, placing DeleteFinalStateUnknown marker without object", err, k)
-		} else if !exists {
-			deletedObj = nil
-			klog.Infof("Key %v does not exist in known objects store, placing DeleteFinalStateUnknown marker without object", k)
-		}
-		queuedDeletions++
-		if err := f.queueActionLocked(Deleted, DeletedFinalStateUnknown{k, deletedObj}); err != nil {
-			return err
-		}
 	}

 	if !f.populated {
--- a/tools/cache/delta_fifo_test.go
+++ b/tools/cache/delta_fifo_test.go
@@ -121,6 +121,130 @@ func TestDeltaFIFO_replaceWithDeleteDeltaIn(t *testing.T) {
 	}
 }

+func TestDeltaFIFOW_ReplaceMakesDeletionsForObjectsOnlyInQueue(t *testing.T) {
+	obj := mkFifoObj("foo", 2)
+	objV2 := mkFifoObj("foo", 3)
+	table := []struct {
+		name           string
+		operations     func(f *DeltaFIFO)
+		expectedDeltas Deltas
+	}{
+		{
+			name: "Added object should be deleted on Replace",
+			operations: func(f *DeltaFIFO) {
+				f.Add(obj)
+				f.Replace([]interface{}{}, "0")
+			},
+			expectedDeltas: Deltas{
+				{Added, obj},
+				{Deleted, DeletedFinalStateUnknown{Key: "foo", Obj: obj}},
+			},
+		},
+		{
+			name: "Replaced object should have only a single Delete",
+			operations: func(f *DeltaFIFO) {
+				f.emitDeltaTypeReplaced = true
+				f.Add(obj)
+				f.Replace([]interface{}{obj}, "0")
+				f.Replace([]interface{}{}, "0")
+			},
+			expectedDeltas: Deltas{
+				{Added, obj},
+				{Replaced, obj},
+				{Deleted, DeletedFinalStateUnknown{Key: "foo", Obj: obj}},
+			},
+		},
+		{
+			name: "Deleted object should have only a single Delete",
+			operations: func(f *DeltaFIFO) {
+				f.Add(obj)
+				f.Delete(obj)
+				f.Replace([]interface{}{}, "0")
+			},
+			expectedDeltas: Deltas{
+				{Added, obj},
+				{Deleted, obj},
+			},
+		},
+		{
+			name: "Synced objects should have a single delete",
+			operations: func(f *DeltaFIFO) {
+				f.Add(obj)
+				f.Replace([]interface{}{obj}, "0")
+				f.Replace([]interface{}{obj}, "0")
+				f.Replace([]interface{}{}, "0")
+			},
+			expectedDeltas: Deltas{
+				{Added, obj},
+				{Sync, obj},
+				{Sync, obj},
+				{Deleted, DeletedFinalStateUnknown{Key: "foo", Obj: obj}},
+			},
+		},
+		{
+			name: "Added objects should have a single delete on multiple Replaces",
+			operations: func(f *DeltaFIFO) {
+				f.Add(obj)
+				f.Replace([]interface{}{}, "0")
+				f.Replace([]interface{}{}, "1")
+			},
+			expectedDeltas: Deltas{
+				{Added, obj},
+				{Deleted, DeletedFinalStateUnknown{Key: "foo", Obj: obj}},
+			},
+		},
+		{
+			name: "Added and deleted and added object should be deleted",
+			operations: func(f *DeltaFIFO) {
+				f.Add(obj)
+				f.Delete(obj)
+				f.Add(objV2)
+				f.Replace([]interface{}{}, "0")
+			},
+			expectedDeltas: Deltas{
+				{Added, obj},
+				{Deleted, obj},
+				{Added, objV2},
+				{Deleted, DeletedFinalStateUnknown{Key: "foo", Obj: objV2}},
+			},
+		},
+	}
+	for _, tt := range table {
+		tt := tt
+
+		t.Run(tt.name, func(t *testing.T) {
+			// Test with a DeltaFIFO with a backing KnownObjects
+			fWithKnownObjects := NewDeltaFIFOWithOptions(DeltaFIFOOptions{
+				KeyFunction: testFifoObjectKeyFunc,
+				KnownObjects: literalListerGetter(func() []testFifoObject {
+					return []testFifoObject{}
+				}),
+			})
+			tt.operations(fWithKnownObjects)
+			actualDeltasWithKnownObjects := Pop(fWithKnownObjects)
+			if !reflect.DeepEqual(tt.expectedDeltas, actualDeltasWithKnownObjects) {
+				t.Errorf("expected %#v, got %#v", tt.expectedDeltas, actualDeltasWithKnownObjects)
+			}
+			if len(fWithKnownObjects.items) != 0 {
+				t.Errorf("expected no extra deltas (empty map), got %#v", fWithKnownObjects.items)
+			}
+
+			// Test with a DeltaFIFO without a backing KnownObjects
+			fWithoutKnownObjects := NewDeltaFIFOWithOptions(DeltaFIFOOptions{
+				KeyFunction: testFifoObjectKeyFunc,
+			})
+			tt.operations(fWithoutKnownObjects)
+			actualDeltasWithoutKnownObjects := Pop(fWithoutKnownObjects)
+			if !reflect.DeepEqual(tt.expectedDeltas, actualDeltasWithoutKnownObjects) {
+				t.Errorf("expected %#v, got %#v", tt.expectedDeltas, actualDeltasWithoutKnownObjects)
+			}
+			if len(fWithoutKnownObjects.items) != 0 {
+				t.Errorf("expected no extra deltas (empty map), got %#v", fWithoutKnownObjects.items)
+			}
+		})
+	}
+}
+
 func TestDeltaFIFO_requeueOnPop(t *testing.T) {
 	f := NewDeltaFIFOWithOptions(DeltaFIFOOptions{KeyFunction: testFifoObjectKeyFunc})

@@ -203,6 +327,88 @@ func TestDeltaFIFO_addUpdate(t *testing.T) {
 	}
 }

+type rvAndXfrm struct {
+	rv   int
+	xfrm int
+}
+
+func TestDeltaFIFO_transformer(t *testing.T) {
+	mk := func(name string, rv int) testFifoObject {
+		return mkFifoObj(name, &rvAndXfrm{rv, 0})
+	}
+	xfrm := TransformFunc(func(obj interface{}) (interface{}, error) {
+		switch v := obj.(type) {
+		case testFifoObject:
+			v.val.(*rvAndXfrm).xfrm++
+		case DeletedFinalStateUnknown:
+			if x := v.Obj.(testFifoObject).val.(*rvAndXfrm).xfrm; x != 1 {
+				return nil, fmt.Errorf("object has been transformed wrong number of times: %#v", obj)
+			}
+		default:
+			return nil, fmt.Errorf("unexpected object: %#v", obj)
+		}
+		return obj, nil
+	})
+
+	must := func(err error) {
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	f := NewDeltaFIFOWithOptions(DeltaFIFOOptions{
+		KeyFunction: testFifoObjectKeyFunc,
+		Transformer: xfrm,
+	})
+	must(f.Add(mk("foo", 10)))
+	must(f.Add(mk("bar", 11)))
+	must(f.Update(mk("foo", 12)))
+	must(f.Delete(mk("foo", 15)))
+	must(f.Replace([]interface{}{}, ""))
+	must(f.Add(mk("bar", 16)))
+	must(f.Replace([]interface{}{}, ""))
+
+	// Should be empty
+	if e, a := []string{"foo", "bar"}, f.ListKeys(); !reflect.DeepEqual(e, a) {
+		t.Errorf("Expected %+v, got %+v", e, a)
+	}
+
+	for i := 0; i < 2; i++ {
+		obj, err := f.Pop(func(o interface{}) error { return nil })
+		if err != nil {
+			t.Fatalf("got nothing on try %v?", i)
+		}
+		obj = obj.(Deltas).Newest().Object
+		switch v := obj.(type) {
+		case testFifoObject:
+			if v.name != "foo" {
+				t.Errorf("expected regular deletion of foo, got %q", v.name)
+			}
+			rx := v.val.(*rvAndXfrm)
+			if rx.rv != 15 {
+				t.Errorf("expected last message, got %#v", obj)
+			}
+			if rx.xfrm != 1 {
+				t.Errorf("obj %v transformed wrong number of times.", obj)
+			}
+		case DeletedFinalStateUnknown:
+			tf := v.Obj.(testFifoObject)
+			rx := tf.val.(*rvAndXfrm)
+			if tf.name != "bar" {
+				t.Errorf("expected tombstone deletion of bar, got %q", tf.name)
+			}
+			if rx.rv != 16 {
+				t.Errorf("expected last message, got %#v", obj)
+			}
+			if rx.xfrm != 1 {
+				t.Errorf("tombstoned obj %v transformed wrong number of times.", obj)
+			}
+		default:
+			t.Errorf("unknown item %#v", obj)
+		}
+	}
+}
+
 func TestDeltaFIFO_enqueueingNoLister(t *testing.T) {
 	f := NewDeltaFIFOWithOptions(DeltaFIFOOptions{KeyFunction: testFifoObjectKeyFunc})
 	f.Add(mkFifoObj("foo", 10))
@@ -371,7 +577,7 @@ func TestDeltaFIFO_ReplaceMakesDeletions(t *testing.T) {

 	expectedList = []Deltas{
 		{{Added, mkFifoObj("baz", 10)},
-			{Deleted, DeletedFinalStateUnknown{Key: "baz", Obj: mkFifoObj("baz", 7)}}},
+			{Deleted, DeletedFinalStateUnknown{Key: "baz", Obj: mkFifoObj("baz", 10)}}},
 		{{Sync, mkFifoObj("foo", 5)}},
 		// Since "bar" didn't have a delete event and wasn't in the Replace list
 		// it should get a tombstone key with the right Obj.
@@ -385,6 +591,67 @@ func TestDeltaFIFO_ReplaceMakesDeletions(t *testing.T) {
 		}
 	}

+	// Now try deleting and recreating the object in the queue, then delete it by a Replace call
+	f = NewDeltaFIFOWithOptions(DeltaFIFOOptions{
+		KeyFunction: testFifoObjectKeyFunc,
+		KnownObjects: literalListerGetter(func() []testFifoObject {
+			return []testFifoObject{mkFifoObj("foo", 5), mkFifoObj("bar", 6), mkFifoObj("baz", 7)}
+		}),
+	})
+	f.Delete(mkFifoObj("bar", 6))
+	f.Add(mkFifoObj("bar", 100))
+	f.Replace([]interface{}{mkFifoObj("foo", 5)}, "0")
+
+	expectedList = []Deltas{
+		{
+			{Deleted, mkFifoObj("bar", 6)},
+			{Added, mkFifoObj("bar", 100)},
+			// Since "bar" has a newer object in the queue than in the state,
+			// it should get a tombstone key with the latest object from the queue
+			{Deleted, DeletedFinalStateUnknown{Key: "bar", Obj: mkFifoObj("bar", 100)}},
+		},
+		{{Sync, mkFifoObj("foo", 5)}},
+		{{Deleted, DeletedFinalStateUnknown{Key: "baz", Obj: mkFifoObj("baz", 7)}}},
+	}
+
+	for _, expected := range expectedList {
+		cur := Pop(f).(Deltas)
+		if e, a := expected, cur; !reflect.DeepEqual(e, a) {
+			t.Errorf("Expected %#v, got %#v", e, a)
+		}
+	}
+
+	// Now try syncing it first to ensure the delete use the latest version
+	f = NewDeltaFIFOWithOptions(DeltaFIFOOptions{
+		KeyFunction: testFifoObjectKeyFunc,
+		KnownObjects: literalListerGetter(func() []testFifoObject {
+			return []testFifoObject{mkFifoObj("foo", 5), mkFifoObj("bar", 6), mkFifoObj("baz", 7)}
+		}),
+	})
+	f.Replace([]interface{}{mkFifoObj("bar", 100), mkFifoObj("foo", 5)}, "0")
+	f.Replace([]interface{}{mkFifoObj("foo", 5)}, "0")
+
+	expectedList = []Deltas{
+		{
+			{Sync, mkFifoObj("bar", 100)},
+			// Since "bar" didn't have a delete event and wasn't in the Replace list
+			// it should get a tombstone key with the right Obj.
+			{Deleted, DeletedFinalStateUnknown{Key: "bar", Obj: mkFifoObj("bar", 100)}},
+		},
+		{
+			{Sync, mkFifoObj("foo", 5)},
+			{Sync, mkFifoObj("foo", 5)},
+		},
+		{{Deleted, DeletedFinalStateUnknown{Key: "baz", Obj: mkFifoObj("baz", 7)}}},
+	}
+
+	for _, expected := range expectedList {
+		cur := Pop(f).(Deltas)
+		if e, a := expected, cur; !reflect.DeepEqual(e, a) {
+			t.Errorf("Expected %#v, got %#v", e, a)
+		}
+	}
+
 	// Now try starting without an explicit KeyListerGetter
 	f = NewDeltaFIFOWithOptions(DeltaFIFOOptions{KeyFunction: testFifoObjectKeyFunc})
 	f.Add(mkFifoObj("baz", 10))
--- a/tools/cache/shared_informer.go
+++ b/tools/cache/shared_informer.go
@@ -190,10 +190,7 @@ type SharedInformer interface {
 	//
 	// Must be set before starting the informer.
 	//
-	// Note: Since the object given to the handler may be already shared with
-	//	other goroutines, it is advisable to copy the object being
-	//  transform before mutating it at all and returning the copy to prevent
-	//	data races.
+	// Please see the comment on TransformFunc for more details.
 	SetTransform(handler TransformFunc) error
 }

@@ -404,6 +401,7 @@ func (s *sharedIndexInformer) Run(stopCh <-chan struct{}) {
 	fifo := NewDeltaFIFOWithOptions(DeltaFIFOOptions{
 		KnownObjects:          s.indexer,
 		EmitDeltaTypeReplaced: true,
+		Transformer:           s.transform,
 	})

 	cfg := &Config{
@@ -568,7 +566,7 @@ func (s *sharedIndexInformer) HandleDeltas(obj interface{}) error {
 	defer s.blockDeltas.Unlock()

 	if deltas, ok := obj.(Deltas); ok {
-		return processDeltas(s, s.indexer, s.transform, deltas)
+		return processDeltas(s, s.indexer, deltas)
 	}
 	return errors.New("object given as Process argument is not Deltas")
 }
--- a/tools/cache/shared_informer_test.go
+++ b/tools/cache/shared_informer_test.go
@@ -371,9 +371,8 @@ func TestSharedInformerTransformer(t *testing.T) {
 			name := pod.GetName()

 			if upper := strings.ToUpper(name); upper != name {
-				copied := pod.DeepCopyObject().(*v1.Pod)
-				copied.SetName(upper)
-				return copied, nil
+				pod.SetName(upper)
+				return pod, nil
 			}
 		}
 		return obj, nil
--- a/transport/cache.go
+++ b/transport/cache.go
@@ -17,6 +17,7 @@ limitations under the License.
 package transport

 import (
+	"context"
 	"fmt"
 	"net"
 	"net/http"
@@ -55,6 +56,9 @@ type tlsCacheKey struct {
 	serverName         string
 	nextProtos         string
 	disableCompression bool
+	// these functions are wrapped to allow them to be used as map keys
+	getCert *GetCertHolder
+	dial    *DialHolder
 }

 func (t tlsCacheKey) String() string {
@@ -62,7 +66,8 @@ func (t tlsCacheKey) String() string {
 	if len(t.keyData) > 0 {
 		keyText = "<redacted>"
 	}
-	return fmt.Sprintf("insecure:%v, caData:%#v, certData:%#v, keyData:%s, serverName:%s, disableCompression:%t", t.insecure, t.caData, t.certData, keyText, t.serverName, t.disableCompression)
+	return fmt.Sprintf("insecure:%v, caData:%#v, certData:%#v, keyData:%s, serverName:%s, disableCompression:%t, getCert:%p, dial:%p",
+		t.insecure, t.caData, t.certData, keyText, t.serverName, t.disableCompression, t.getCert, t.dial)
 }

 func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) {
@@ -92,8 +97,10 @@ func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) {
 		return http.DefaultTransport, nil
 	}

-	dial := config.Dial
-	if dial == nil {
+	var dial func(ctx context.Context, network, address string) (net.Conn, error)
+	if config.Dial != nil {
+		dial = config.Dial
+	} else {
 		dial = (&net.Dialer{
 			Timeout:   30 * time.Second,
 			KeepAlive: 30 * time.Second,
@@ -102,7 +109,7 @@ func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) {

 	// If we use are reloading files, we need to handle certificate rotation properly
 	// TODO(jackkleeman): We can also add rotation here when config.HasCertCallback() is true
-	if config.TLS.ReloadTLSFiles {
+	if config.TLS.ReloadTLSFiles && tlsConfig != nil && tlsConfig.GetClientCertificate != nil {
 		dynamicCertDialer := certRotatingDialer(tlsConfig.GetClientCertificate, dial)
 		tlsConfig.GetClientCertificate = dynamicCertDialer.GetClientCertificate
 		dial = dynamicCertDialer.connDialer.DialContext
@@ -138,10 +145,18 @@ func tlsConfigKey(c *Config) (tlsCacheKey, bool, error) {
 		return tlsCacheKey{}, false, err
 	}

-	if c.TLS.GetCert != nil || c.Dial != nil || c.Proxy != nil {
+	if c.Proxy != nil {
 		// cannot determine equality for functions
 		return tlsCacheKey{}, false, nil
 	}
+	if c.Dial != nil && c.DialHolder == nil {
+		// cannot determine equality for dial function that doesn't have non-nil DialHolder set as well
+		return tlsCacheKey{}, false, nil
+	}
+	if c.TLS.GetCert != nil && c.TLS.GetCertHolder == nil {
+		// cannot determine equality for getCert function that doesn't have non-nil GetCertHolder set as well
+		return tlsCacheKey{}, false, nil
+	}

 	k := tlsCacheKey{
 		insecure:           c.TLS.Insecure,
@@ -149,6 +164,8 @@ func tlsConfigKey(c *Config) (tlsCacheKey, bool, error) {
 		serverName:         c.TLS.ServerName,
 		nextProtos:         strings.Join(c.TLS.NextProtos, ","),
 		disableCompression: c.DisableCompression,
+		getCert:            c.TLS.GetCertHolder,
+		dial:               c.DialHolder,
 	}

 	if c.TLS.ReloadTLSFiles {
--- a/transport/cache_test.go
+++ b/transport/cache_test.go
@@ -21,6 +21,7 @@ import (
 	"crypto/tls"
 	"net"
 	"net/http"
+	"net/url"
 	"testing"
 )

@@ -58,16 +59,24 @@ func TestTLSConfigKey(t *testing.T) {
 				t.Errorf("Expected identical cache keys for %q and %q, got:\n\t%s\n\t%s", nameA, nameB, keyA, keyB)
 				continue
 			}
+			if keyA != (tlsCacheKey{}) {
+				t.Errorf("Expected empty cache keys for %q and %q, got:\n\t%s\n\t%s", nameA, nameB, keyA, keyB)
+				continue
+			}
 		}
 	}

 	// Make sure config fields that affect the tls config affect the cache key
 	dialer := net.Dialer{}
 	getCert := func() (*tls.Certificate, error) { return nil, nil }
+	getCertHolder := &GetCertHolder{GetCert: getCert}
 	uniqueConfigurations := map[string]*Config{
+		"proxy":    {Proxy: func(request *http.Request) (*url.URL, error) { return nil, nil }},
 		"no tls":   {},
 		"dialer":   {Dial: dialer.DialContext},
 		"dialer2":  {Dial: func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil }},
+		"dialer3":  {Dial: dialer.DialContext, DialHolder: &DialHolder{Dial: dialer.DialContext}},
+		"dialer4":  {Dial: func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil }, DialHolder: &DialHolder{Dial: func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil }}},
 		"insecure": {TLS: TLSConfig{Insecure: true}},
 		"cadata 1": {TLS: TLSConfig{CAData: []byte{1}}},
 		"cadata 2": {TLS: TLSConfig{CAData: []byte{2}}},
@@ -128,6 +137,13 @@ func TestTLSConfigKey(t *testing.T) {
 				GetCert: func() (*tls.Certificate, error) { return nil, nil },
 			},
 		},
+		"getCert3": {
+			TLS: TLSConfig{
+				KeyData:       []byte{1},
+				GetCert:       getCert,
+				GetCertHolder: getCertHolder,
+			},
+		},
 		"getCert1, key 2": {
 			TLS: TLSConfig{
 				KeyData: []byte{2},
--- a/transport/config.go
+++ b/transport/config.go
@@ -68,7 +68,11 @@ type Config struct {
 	WrapTransport WrapperFunc

 	// Dial specifies the dial function for creating unencrypted TCP connections.
+	// If specified, this transport will be non-cacheable unless DialHolder is also set.
 	Dial func(ctx context.Context, network, address string) (net.Conn, error)
+	// DialHolder can be populated to make transport configs cacheable.
+	// If specified, DialHolder.Dial must be equal to Dial.
+	DialHolder *DialHolder

 	// Proxy is the proxy func to be used for all requests made by this
 	// transport. If Proxy is nil, http.ProxyFromEnvironment is used. If Proxy
@@ -78,6 +82,11 @@ type Config struct {
 	Proxy func(*http.Request) (*url.URL, error)
 }

+// DialHolder is used to make the wrapped function comparable so that it can be used as a map key.
+type DialHolder struct {
+	Dial func(ctx context.Context, network, address string) (net.Conn, error)
+}
+
 // ImpersonationConfig has all the available impersonation options
 type ImpersonationConfig struct {
 	// UserName matches user.Info.GetName()
@@ -143,5 +152,15 @@ type TLSConfig struct {
 	// To use only http/1.1, set to ["http/1.1"].
 	NextProtos []string

-	GetCert func() (*tls.Certificate, error) // Callback that returns a TLS client certificate. CertData, CertFile, KeyData and KeyFile supercede this field.
+	// Callback that returns a TLS client certificate. CertData, CertFile, KeyData and KeyFile supercede this field.
+	// If specified, this transport is non-cacheable unless CertHolder is populated.
+	GetCert func() (*tls.Certificate, error)
+	// CertHolder can be populated to make transport configs that set GetCert cacheable.
+	// If set, CertHolder.GetCert must be equal to GetCert.
+	GetCertHolder *GetCertHolder
+}
+
+// GetCertHolder is used to make the wrapped function comparable so that it can be used as a map key.
+type GetCertHolder struct {
+	GetCert func() (*tls.Certificate, error)
 }
--- a/transport/transport.go
+++ b/transport/transport.go
@@ -24,6 +24,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"reflect"
 	"sync"
 	"time"

@@ -39,6 +40,10 @@ func New(config *Config) (http.RoundTripper, error) {
 		return nil, fmt.Errorf("using a custom transport with TLS certificate options or the insecure flag is not allowed")
 	}

+	if !isValidHolders(config) {
+		return nil, fmt.Errorf("misconfigured holder for dialer or cert callback")
+	}
+
 	var (
 		rt  http.RoundTripper
 		err error
@@ -56,6 +61,26 @@ func New(config *Config) (http.RoundTripper, error) {
 	return HTTPWrappersForConfig(config, rt)
 }

+func isValidHolders(config *Config) bool {
+	if config.TLS.GetCertHolder != nil {
+		if config.TLS.GetCertHolder.GetCert == nil ||
+			config.TLS.GetCert == nil ||
+			reflect.ValueOf(config.TLS.GetCertHolder.GetCert).Pointer() != reflect.ValueOf(config.TLS.GetCert).Pointer() {
+			return false
+		}
+	}
+
+	if config.DialHolder != nil {
+		if config.DialHolder.Dial == nil ||
+			config.Dial == nil ||
+			reflect.ValueOf(config.DialHolder.Dial).Pointer() != reflect.ValueOf(config.Dial).Pointer() {
+			return false
+		}
+	}
+
+	return true
+}
+
 // TLSConfigFor returns a tls.Config that will provide the transport level security defined
 // by the provided Config. Will return nil if no transport level security is requested.
 func TLSConfigFor(c *Config) (*tls.Config, error) {
--- a/transport/transport_test.go
+++ b/transport/transport_test.go
@@ -21,6 +21,7 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
+	"net"
 	"net/http"
 	"testing"
 )
@@ -94,6 +95,13 @@ stR0Yiw0buV6DL/moUO0HIM9Bjh96HJp+LxiIS6UCdIhMPp5HoQa
 )

 func TestNew(t *testing.T) {
+	globalGetCert := &GetCertHolder{
+		GetCert: func() (*tls.Certificate, error) { return nil, nil },
+	}
+	globalDial := &DialHolder{
+		Dial: func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil },
+	}
+
 	testCases := map[string]struct {
 		Config       *Config
 		Err          bool
@@ -255,6 +263,144 @@ func TestNew(t *testing.T) {
 				},
 			},
 		},
+		"nil holders and nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       nil,
+					GetCertHolder: nil,
+				},
+				Dial:       nil,
+				DialHolder: nil,
+			},
+			Err:          false,
+			TLS:          false,
+			TLSCert:      false,
+			TLSErr:       false,
+			Default:      true,
+			Insecure:     false,
+			DefaultRoots: false,
+		},
+		"nil holders and non-nil regular get cert": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       func() (*tls.Certificate, error) { return nil, nil },
+					GetCertHolder: nil,
+				},
+				Dial:       nil,
+				DialHolder: nil,
+			},
+			Err:          false,
+			TLS:          true,
+			TLSCert:      true,
+			TLSErr:       false,
+			Default:      false,
+			Insecure:     false,
+			DefaultRoots: true,
+		},
+		"nil holders and non-nil regular dial": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       nil,
+					GetCertHolder: nil,
+				},
+				Dial:       func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil },
+				DialHolder: nil,
+			},
+			Err:          false,
+			TLS:          true,
+			TLSCert:      false,
+			TLSErr:       false,
+			Default:      false,
+			Insecure:     false,
+			DefaultRoots: true,
+		},
+		"non-nil dial holder and nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       nil,
+					GetCertHolder: nil,
+				},
+				Dial:       nil,
+				DialHolder: &DialHolder{},
+			},
+			Err: true,
+		},
+		"non-nil cert holder and nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       nil,
+					GetCertHolder: &GetCertHolder{},
+				},
+				Dial:       nil,
+				DialHolder: nil,
+			},
+			Err: true,
+		},
+		"non-nil dial holder and non-nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       nil,
+					GetCertHolder: nil,
+				},
+				Dial:       func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil },
+				DialHolder: &DialHolder{},
+			},
+			Err: true,
+		},
+		"non-nil cert holder and non-nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       func() (*tls.Certificate, error) { return nil, nil },
+					GetCertHolder: &GetCertHolder{},
+				},
+				Dial:       nil,
+				DialHolder: nil,
+			},
+			Err: true,
+		},
+		"non-nil dial holder+internal and non-nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       nil,
+					GetCertHolder: nil,
+				},
+				Dial: func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil },
+				DialHolder: &DialHolder{
+					Dial: func(ctx context.Context, network, address string) (net.Conn, error) { return nil, nil },
+				},
+			},
+			Err: true,
+		},
+		"non-nil cert holder+internal and non-nil regular": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert: func() (*tls.Certificate, error) { return nil, nil },
+					GetCertHolder: &GetCertHolder{
+						GetCert: func() (*tls.Certificate, error) { return nil, nil },
+					},
+				},
+				Dial:       nil,
+				DialHolder: nil,
+			},
+			Err: true,
+		},
+		"non-nil holders+internal and non-nil regular with correct address": {
+			Config: &Config{
+				TLS: TLSConfig{
+					GetCert:       globalGetCert.GetCert,
+					GetCertHolder: globalGetCert,
+				},
+				Dial:       globalDial.Dial,
+				DialHolder: globalDial,
+			},
+			Err:          false,
+			TLS:          true,
+			TLSCert:      true,
+			TLSErr:       false,
+			Default:      false,
+			Insecure:     false,
+			DefaultRoots: true,
+		},
 	}
 	for k, testCase := range testCases {
 		t.Run(k, func(t *testing.T) {
Author	SHA1	Message	Date
Kubernetes Publisher	71fde77b7f	Update dependencies to v0.25.11 tag	2023-06-14 21:26:54 +00:00
Kubernetes Publisher	25e88fd0c2	Merge pull request #118556 from puerco/bump-1.25-go-1.19.10 [release-1.25] releng/go: Update images, deps and ver to go 1.19.10 Kubernetes-commit: 8826d7ee3fb80fc4d85ad8e9e50cbab14233ecf9	2023-06-12 17:34:53 +00:00
Adolfo García Veytia (Puerco)	a3636b916c	update-vendor: update vendored go.sums Run of ./hack/update-vendor.sh Signed-off-by: Adolfo García Veytia (Puerco) <adolfo.garcia@uservers.net> Kubernetes-commit: 61254725a43ce127f1ffe99b0df766415e2e7aa8	2023-06-08 00:18:54 -06:00
Kubernetes Publisher	5ddf75f6a2	Merge pull request #115050 from MadhavJivrajani/release-1.25 [1.25] Cherry Pick of #114766: [Prepare for go1.20] *: Bump versions and fix tests Kubernetes-commit: 1b9137732b227f6f97aeccaab179435bbf8a0b1f	2023-05-23 18:39:03 +00:00
Kubernetes Publisher	d32b1d7c08	Merge pull request #117682 from kolyshkin/1.25-bump-runc-1.1.6 [1.25] vendor: bump runc to 1.1.6 Kubernetes-commit: c51f7edb0503277f1f8adb500c41b3d7051ee3b3	2023-05-06 01:27:01 +00:00
Kir Kolyshkin	e53b407e85	[1.25] vendor: bump runc to 1.1.6 Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> Kubernetes-commit: cc3bdb6e1e5b2f69f0cac5d5529ab67abf0c3d18	2023-04-28 17:03:58 -07:00
Kubernetes Publisher	51c17ec9ab	Merge pull request #115900 from odinuge/automated-cherry-pick-of-#115620-upstream-release-1.25 Automated cherry pick of #115620: client-go/cache: fix missing delete event on replace (+ #116623) Kubernetes-commit: 5cd05fae618f6ebd438117bce02e1ff631652253	2023-04-04 11:17:41 -07:00
Daniel Smith	3c81ccc036	Change where transformers are called. odinuge: sorted out some function signature changes during cherry-picking that caused conflicts. (cherry picked from commit e76dff38cf74c3c8ad9ed4d3bc6e3641d9b64565) Signed-off-by: Odin Ugedal <odin@uged.al> Kubernetes-commit: a247e48bcd3742da7ddb43aa0b4d2f947afc3d33	2023-03-14 23:05:20 +00:00
Odin Ugedal	8205c38649	client-go/cache: update Replace comment to be more clear Since the behavior is now changed, and the old behavior leaked objects, this adds a new comment about how Replace works. Signed-off-by: Odin Ugedal <ougedal@palantir.com> Signed-off-by: Odin Ugedal <odin@uged.al> Kubernetes-commit: cc675a5367d9d09992d7f12b8a43a10d672370b9	2023-02-13 11:23:50 +00:00
Odin Ugedal	3bb5a08497	client-go/cache: rewrite Replace to check queue first This is useful to both reduce the code complexity, and to ensure clients get the "newest" version of an object known when its deleted. This is all best-effort, but for clients it makes more sense giving them the newest object they observed rather than an old one. This is especially useful when an object is recreated. eg. Object A with key K is in the KnownObjects store; - DELETE delta for A is queued with key K - CREATE delta for B is queued with key K - Replace without any object with key K in it. In this situation its better to create a DELETE delta with DeletedFinalStateUnknown with B (with this patch), than it is to give the client an DeletedFinalStateUnknown with A (without this patch). Signed-off-by: Odin Ugedal <ougedal@palantir.com> Signed-off-by: Odin Ugedal <odin@uged.al> Kubernetes-commit: 4283020151ab233101e77996fd8084488057f9c2	2023-02-13 11:12:37 +00:00
Odin Ugedal	e9d3761795	client-go/cache: merge ReplaceMakesDeletionsForObjectsInQueue tests Signed-off-by: Odin Ugedal <ougedal@palantir.com> Signed-off-by: Odin Ugedal <odin@uged.al> Kubernetes-commit: db451e163d97f6a2c023efa30aa12b751c785798	2023-02-10 14:30:10 +00:00
Odin Ugedal	8a3d757be0	client-go/cache: fix missing delete event on replace without knownObjects This fixes an issue where a relist could result in a DELETED delta with an object wrapped in a DeletedFinalStateUnknown object; and then on the next relist, it would wrap that object inside another DeletedFinalStateUnknown, leaving the user with a "double" layer of DeletedFinalStateUnknown's. Signed-off-by: Odin Ugedal <ougedal@palantir.com> Signed-off-by: Odin Ugedal <odin@uged.al> Kubernetes-commit: a818874dce54226ecc8ef384ff8b4c82aa6aaa85	2023-02-10 14:16:26 +00:00
Odin Ugedal	58381003a1	client-go/cache: fix missing delete event on replace This fixes a race condition when a "short lived" object is created and the create event is still present on the queue when a relist replaces the state. Previously that would lead in the object being leaked. The way this could happen is roughly; 1. new Object is added O, agent gets CREATED event for it 2. watch is terminated, and the agent runs a new list, L 3. CREATE event for O is still on the queue to be processed. 4. informer replaces the old data in store with L, and O is not in L - Since O is not in the store, and not in the list L, no DELETED event is queued 5. CREATE event for O is still on the queue to be processed. 6. CREATE event for O is processed 7. O is <leaked>; its present in the cache but not in k8s. With this patch, on step 4. above it would create a DELETED event ensuring that the object will be removed. Signed-off-by: Odin Ugedal <ougedal@palantir.com> Signed-off-by: Odin Ugedal <odin@uged.al> Kubernetes-commit: bdc4a22309fc51f824aca41f11ee4466758ea9b0	2023-02-08 14:57:23 +00:00
Kubernetes Publisher	d51156025a	Merge pull request #115788 from liggitt/net-0.7.0-1.25 [1.25] Update golang.org/x/net to v0.7.0 Kubernetes-commit: 8972d2b73a497eb0d15615b24fa7ca82d5b38b86	2023-02-15 11:21:15 +00:00
Jordan Liggitt	c3942e6cb3	Update golang.org/x/net to v0.7.0 Kubernetes-commit: fc043497d870b68ba35701a42c06071340b68bb2	2023-02-14 23:21:55 -05:00
Kubernetes Publisher	705901c8a7	Merge pull request #115567 from enj/automated-cherry-pick-of-#115315-upstream-release-1.25 Automated cherry pick of #115315: kubelet/client: collapse transport wiring onto standard Kubernetes-commit: dd286416074ab1796ce100e27a7eb008d4624936	2023-02-10 22:42:41 +00:00
Kubernetes Publisher	e42bae1174	Merge pull request #115641 from nckturner/pin-golang.org/x/net-to-v0.4.0-in-1.25 Pin golang.org/x/net to v0.4.0 in 1.25 Kubernetes-commit: 641272fbcf7a75a06fb55909b5514523271737ef	2023-02-10 15:27:41 +00:00
Nick Turner	27f722275a	Pin golang.org/x/net to v0.4.0 in 1.25 Kubernetes-commit: cd5e3b8a1f65c464168093ef516726d3b603d011	2023-02-08 17:57:20 -08:00
Monis Khan	212fb452f3	kubelet/client: collapse transport wiring onto standard approach Signed-off-by: Monis Khan <mok@microsoft.com> Kubernetes-commit: 2fe98e9c00d6a084b482fa337acf5fe4f2fdedeb	2023-02-05 20:51:54 -05:00
Madhav Jivrajani	133a487bfa	*: Bump version of vmware/govmomi Bumping version to include changes that better handle TLS errors. Bump nescessary to prepare for when the version of Go is bumped to 1.20 Signed-off-by: Madhav Jivrajani <madhav.jiv@gmail.com> Kubernetes-commit: 0ef4b72cf0cfec94fecc80d78f149d9eb56a6a10	2023-01-13 12:00:36 +05:30
Kubernetes Publisher	ab9a2e8199	Merge pull request #113990 from liggitt/automated-cherry-pick-of-#113933-upstream-release-1.25 Automated cherry pick of #113933: Limit request retrying to []byte request bodies Kubernetes-commit: e6d249f777d83c0c33cbda56fc1e9df8142b29a7	2022-12-13 00:03:09 +00:00
Kubernetes Publisher	b2883ba878	Merge pull request #114320 from liggitt/net-1.25 Update golang.org/x/net 1e63c2f Kubernetes-commit: 6711e16058e842dae009f0263b8b313677cebbfb	2022-12-07 02:20:47 +00:00
Jordan Liggitt	fcb591bc0a	Update golang.org/x/net 1e63c2f Includes fix for CVE-2022-41717 Kubernetes-commit: 73c3dcb6558eeeea9e77940dde525a81d7e0bc1d	2022-12-06 17:35:53 -05:00
Kubernetes Publisher	b63afdf260	Merge pull request #113425 from aimuz/automated-cherry-pick-of-#112693-upstream-release-1.25 Automated cherry pick of #112693: Fixed (CVE-2022-27664) Bump golang.org/x/net to Kubernetes-commit: c8d0fbe009b48f96e36bba9c36e20dba79bfdd05	2022-11-16 01:57:44 +00:00
Jordan Liggitt	9c1395ec93	Limit request retrying to []byte request bodies Kubernetes-commit: 1e5e5330df628ca5fb1306b8fcaf3a1231ae536c	2022-11-15 17:47:35 -05:00
aimuz	5aa9be71ec	Fixed (CVE-2022-27664) Bump golang.org/x/net to v0.1.1-0.20221027164007-c63010009c80 Fixed https://pkg.go.dev/vuln/GO-2022-0969 Signed-off-by: aimuz <mr.imuz@gmail.com> Kubernetes-commit: 9ab1a67d6769303b9c446c25f95d39a0a5218f32	2022-10-28 10:07:56 +08:00
Kubernetes Publisher	166ab05d11	Merge pull request #112808 from cheftako/automated-cherry-pick-of-#112689-upstream-release-1.25 Bump konnectivity-client to v0.0.33 Kubernetes-commit: e1d0471ec1272f959253ffa2ebee1d9caacd7de5	2022-10-07 07:53:11 +00:00
Walter Fender	4b5a63801d	Updated vendor to the new preferred versions. Added missing files. Kubernetes-commit: 1bc43a0dd51fa9b5450d5f66b594892874501479	2022-09-30 19:01:34 -07:00
Kubernetes Publisher	1904631ef0	Merge pull request #112161 from pohly/automated-cherry-pick-of-#112129-origin-release-1.25 Automated cherry pick of #112129: dependencies: update to ginkgo v2.1.6 and gomega v1.20.1 Kubernetes-commit: 325e65b5d13e37b384bdd08397381a48693013d7	2022-09-09 11:12:16 +00:00
Kubernetes Publisher	8f4eb75bce	Merge pull request #112336 from enj/automated-cherry-pick-of-#112017-upstream-release-1.25 Automated cherry pick of #112017: exec auth: support TLS config caching Kubernetes-commit: 1ab51c3bbf480d7ad58b992de8c03a376beda967	2022-09-09 00:25:24 -07:00
Patrick Ohly	e278668ebe	dependencies: update to ginkgo v2.1.6 and gomega v1.20.1 Ginkgo v2.1.6 adds ginkgo.SuppressProgressReporting which is needed to suppress too verbose output each time the ReportAfterEach of the custom progress reporter is invoked. Kubernetes-commit: a440c257a9119c899af18f424e8e4daeb0078564	2022-08-30 19:33:50 +02:00
Monis Khan	1874bc6496	exec auth: support TLS config caching This change updates the transport.Config .Dial and .TLS.GetCert fields to use a struct wrapper. This indirection via a pointer allows the functions to be compared and thus makes them valid to use as map keys. This change is then leveraged by the existing global exec auth and TLS config caches to return the same authenticator and TLS config even when distinct but identical rest configs were used to create distinct clientsets. Signed-off-by: Monis Khan <mok@microsoft.com> Kubernetes-commit: 01044903860c7e2463888c48db91270dc9c7281d	2022-08-24 16:04:19 +00:00
Kubernetes Publisher	db7e2d829e	Merge pull request #112055 from aanm/automated-cherry-pick-of-#111752-origin-gh-aanm-release-1.25 Automated cherry pick of #111752: Revert "client-go: remove no longer used Kubernetes-commit: 4a017e900085af7d617782eab413551585582a8a	2022-09-06 18:34:35 -07:00
André Martins	c9008f3abb	client-go/rest: check if url is nil to prevent nil pointer dereference Signed-off-by: André Martins <aanm90@gmail.com> Kubernetes-commit: fa1d4c327716ae117120311f566d26abff9d91ad	2022-08-09 14:19:01 +02:00
André Martins	1a46dfdf57	Revert "client-go: remove no longer used finalURLTemplate" The functionality provided by the finalURLTemplate is still used by certain external projects to track the request latency for requests performed to kube-apiserver. Using a template of the URL, instead of the URL itself, prevents the explosion of label cardinality in exposed metrics since it aggregates the URLs in a way that common URLs requests are reported as being the same. This reverts commit bebf5a608f68523fc430a44f6db26b16022dc862. Signed-off-by: André Martins <aanm90@gmail.com> Kubernetes-commit: 11e16c63c87f07e9e68977c74b937989983754c1	2022-08-08 23:27:45 +02:00
Kubernetes Publisher	b3e4a4065a	Merge remote-tracking branch 'origin/master' into release-1.25 Kubernetes-commit: 35f46d004bd2c7dc88b2c5e0218d5de392369b27	2022-08-18 22:45:44 +00:00
Jordan Liggitt	c2f61ae20a	Update removal warnings to 1.26 Kubernetes-commit: 68758fc5c5099c83104a637e6d6ad3f4534f0d08	2022-08-18 14:17:56 -04:00
Jordan Liggitt	54e42ab6f2	update-gofmt Kubernetes-commit: 79c09f0b310b8b66f8f14ad254f268788c42e076	2022-08-18 14:17:31 -04:00
Jordan Liggitt	ef26118838	Revert "Remove gcp and azure auth plugins" This reverts commit 916cf16cf14928702f3f90b655ddddab2c85fcec. Kubernetes-commit: 651b4f5b647a205d12fad4d0edc489d97109cccc	2022-08-18 14:16:23 -04:00