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add metric and test
Change-Id: Ic2bcf39caef791b2e13448a97d2c3203ed1d94b9
This commit is contained in:
Han Kang
parent
58c10aa6eb
commit
07020ab42e
@ -0,0 +1,4 @@
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# See the OWNERS docs at https://go.k8s.io/owners
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approvers:
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- logicalhan
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@ -0,0 +1,36 @@
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/*
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Copyright 2022 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"k8s.io/component-base/metrics"
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)
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var (
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RequestBodySizes = metrics.NewHistogramVec(
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&metrics.HistogramOpts{
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Subsystem: "apiserver",
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Name: "request_body_sizes",
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Help: "Apiserver request body sizes broken out by size.",
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// we use 0.05 KB as the smallest bucket with 0.1 KB increments up to the
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// apiserver limit.
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Buckets: metrics.LinearBuckets(50000, 100000, 31),
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StabilityLevel: metrics.ALPHA,
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},
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[]string{"resource", "verb"},
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)
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)
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@ -20,6 +20,7 @@ import (
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"context"
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"errors"
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"fmt"
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"io"
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"net/http"
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"reflect"
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"strings"
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@ -45,9 +46,12 @@ import (
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"k8s.io/apiserver/pkg/admission"
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"k8s.io/apiserver/pkg/apis/example"
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examplev1 "k8s.io/apiserver/pkg/apis/example/v1"
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"k8s.io/apiserver/pkg/endpoints/handlers/metrics"
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"k8s.io/apiserver/pkg/endpoints/request"
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"k8s.io/apiserver/pkg/registry/rest"
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clientgoscheme "k8s.io/client-go/kubernetes/scheme"
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"k8s.io/component-base/metrics/legacyregistry"
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"k8s.io/component-base/metrics/testutil"
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utiltrace "k8s.io/utils/trace"
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)
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@ -107,6 +111,94 @@ func TestPatchAnonymousField(t *testing.T) {
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}
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}
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func TestLimitedReadBody(t *testing.T) {
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defer legacyregistry.Reset()
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legacyregistry.Register(metrics.RequestBodySizes)
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testcases := []struct {
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desc string
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requestBody io.Reader
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limit int64
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expectedMetrics string
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expectedErr bool
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}{
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{
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desc: "aaaa with limit 1",
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requestBody: strings.NewReader("aaaa"),
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limit: 1,
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expectedMetrics: "",
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expectedErr: true,
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},
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{
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desc: "aaaa with limit 5",
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requestBody: strings.NewReader("aaaa"),
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limit: 5,
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expectedMetrics: `
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# HELP apiserver_request_body_sizes [ALPHA] Apiserver request body sizes broken out by size.
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# TYPE apiserver_request_body_sizes histogram
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="50000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="150000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="250000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="350000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="450000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="550000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="650000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="750000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="850000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="950000"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.05e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.15e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.25e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.35e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.45e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.55e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.65e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.75e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.85e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="1.95e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.05e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.15e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.25e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.35e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.45e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.55e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.65e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.75e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.85e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="2.95e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="3.05e+06"} 1
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apiserver_request_body_sizes_bucket{resource="resource.group",verb="create",le="+Inf"} 1
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apiserver_request_body_sizes_sum{resource="resource.group",verb="create"} 3
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apiserver_request_body_sizes_count{resource="resource.group",verb="create"} 1
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`,
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expectedErr: false,
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},
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}
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for _, tc := range testcases {
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t.Run(tc.desc, func(t *testing.T) {
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// reset metrics
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defer metrics.RequestBodySizes.Reset()
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defer legacyregistry.Reset()
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req, err := http.NewRequest("POST", "/", tc.requestBody)
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if err != nil {
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t.Errorf("err not expected: got %v", err)
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}
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_, err = limitedReadBody(context.Background(), req, tc.limit, "resource.group", "create")
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if tc.expectedErr {
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if err == nil {
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t.Errorf("err expected: got nil")
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}
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return
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}
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if err = testutil.GatherAndCompare(legacyregistry.DefaultGatherer, strings.NewReader(tc.expectedMetrics), "apiserver_request_body_sizes"); err != nil {
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t.Errorf("unexpected err: %v", err)
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}
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})
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}
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}
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func TestStrategicMergePatchInvalid(t *testing.T) {
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testGV := schema.GroupVersion{Group: "", Version: "v"}
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scheme.AddKnownTypes(testGV, &testPatchType{})
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