Merge pull request #48964 from ixdy/switch-to-kazel

Automatic merge from submit-queue

Switch from gazel to kazel

**What this PR does / why we need it**: switches to `kazel`, where all new development will be focused. Part of the effort for switching from `gazel` to `gazelle`.

I'm imagining that we'll use `kube::util::go_install_from_commit` to version `gazelle` as well.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: x-ref #47558

**Release note**:

```release-note
NONE
```

/release-note-none
/assign @mikedanese @spxtr

.kazelcfg.json

@@ -0,0 +1 @@
+build/root/.kazelcfg.json

hack/lib/util.sh

@@ -513,6 +513,23 @@ kube::util::ensure_godep_version() {
   godep version
 }
 
+# Installs the specified go package at a particular commit.
+kube::util::go_install_from_commit() {
+  local -r pkg=$1
+  local -r commit=$2
+
+  kube::util::ensure-temp-dir
+  mkdir -p "${KUBE_TEMP}/go/src"
+  GOPATH="${KUBE_TEMP}/go" go get -d -u "${pkg}" 2>/dev/null
+  (
+    cd "${KUBE_TEMP}/go/src/${pkg}"
+    git checkout -q "${commit}"
+    GOPATH="${KUBE_TEMP}/go" go install "${pkg}"
+  )
+  PATH="${KUBE_TEMP}/go/bin:${PATH}"
+  hash -r # force bash to clear PATH cache
+}
+
 # Checks that the GOPATH is simple, i.e. consists only of one directory, not multiple.
 kube::util::ensure_single_dir_gopath() {
   if [[ "${GOPATH}" == *:* ]]; then

hack/update-bazel.sh

@@ -20,21 +20,10 @@ set -o pipefail
 export KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
 
-# Remove generated files prior to running gazel.
+# Remove generated files prior to running kazel.
 # TODO(spxtr): Remove this line once Bazel is the only way to build.
 rm -f "${KUBE_ROOT}/pkg/generated/openapi/zz_generated.openapi.go"
 
-go get -u gopkg.in/mikedanese/gazel.v17/gazel
+kube::util::go_install_from_commit github.com/kubernetes/repo-infra/kazel fd3ec969104295f8484a32114ce625955a67365d
 
-for path in ${GOPATH//:/ }; do
+kazel -root="$(kube::realpath ${KUBE_ROOT})"
-  if [[ -e "${path}/bin/gazel" ]]; then
-    gazel="${path}/bin/gazel"
-    break
-  fi
-done
-if [[ -z "${gazel:-}" ]]; then
-  echo "Couldn't find gazel on the GOPATH."
-  exit 1
-fi
-
-"${gazel}" -root="$(kube::realpath ${KUBE_ROOT})"

hack/verify-bazel.sh

@@ -20,25 +20,13 @@ set -o pipefail
 export KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
 
-go get gopkg.in/mikedanese/gazel.v17/gazel
+# Remove generated files prior to running kazel.
-
-# Remove generated files prior to running gazel.
 # TODO(spxtr): Remove this line once Bazel is the only way to build.
 rm -f "${KUBE_ROOT}/pkg/generated/openapi/zz_generated.openapi.go"
 
-for path in ${GOPATH//:/ }; do
+kube::util::go_install_from_commit github.com/kubernetes/repo-infra/kazel fd3ec969104295f8484a32114ce625955a67365d
-  if [[ -e "${path}/bin/gazel" ]]; then
-    gazel="${path}/bin/gazel"
-    break
-  fi
-done
-if [[ -z "${gazel:-}" ]]; then
-  echo "Couldn't find gazel on the GOPATH."
-  exit 1
-fi
 
-
+if ! kazel -validate -print-diff -root="$(kube::realpath ${KUBE_ROOT})" ; then
-if ! "${gazel}" -validate -print-diff -root="$(kube::realpath ${KUBE_ROOT})" ; then
   echo
   echo "Run ./hack/update-bazel.sh"
   exit 1