Fix update/verify-mocks.sh

There appears to be a bug in `go generate` for workspaces which will be
fixed in the 1.22.1 release.

hack/update-mocks.sh

@@ -23,28 +23,24 @@ set -o pipefail
 
 KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
-# Explicitly opt into go modules
-export GO111MODULE=on
 
 kube::golang::verify_go_version
-kube::golang::old::setup_env
+kube::golang::new::setup_env
 
 echo 'installing mockgen'
 pushd "${KUBE_ROOT}/hack/tools" >/dev/null
   go install github.com/golang/mock/mockgen
 popd >/dev/null
 
-function git_find() {
-  # Similar to find but faster and easier to understand.  We want to include
-  # modified and untracked files because this might be running against code
-  # which is not tracked by git yet.
-  git ls-files -cmo --exclude-standard \
+function git_grep() {
+  git grep --untracked --exclude-standard \
+      "$@" \
       ':!:vendor/*'        `# catches vendor/...` \
       ':!:*/vendor/*'      `# catches any subdir/vendor/...` \
       ':!:third_party/*'   `# catches third_party/...` \
       ':!:*/third_party/*' `# catches third_party/...` \
-      ':!:*/testdata/*' \
-      "$@"
+      ':!:*/testdata/*'    `# catches any testdata` \
+      ':(glob)**/*.go'
 }
 
 cd "${KUBE_ROOT}"
@@ -55,19 +51,12 @@ GENERATED_MOCK_FILE_REGEX="^// Code generated by MockGen. DO NOT EDIT.$"
 tmp=$(mktemp)
 kube::util::trap_add "rm -f ${tmp:?}" EXIT
 
-# We use this pattern here rather than `git grep` because we don't really want
-# to encode the pathspec list in multiple places and anything more complicated
-# just isn't worth the effort.
-git_find -z ':(glob)**/*.go' \
-    | { xargs -0 grep -l --null "${GENERATED_MOCK_FILE_REGEX}" || true; } \
-    | xargs -0 rm -f
+git_grep -l -z "${GENERATED_MOCK_FILE_REGEX}" | xargs -0 rm -f
 
 echo 'executing go generate command on below files'
 
-git_find -z ':(glob)**/*.go' | while read -r -d $'\0' file; do
-  test -f "$file" || continue
-  grep -q "//go:generate mockgen" "$file" || continue
-
+git_grep -l -z "//go:generate mockgen" | while read -r -d $'\0' file; do
+  echo "- ${file}"
   temp_file_name="$(kube::realpath "$(mktemp -t "$(basename "$0").XXXXXX")")"
 
   # search for build tag used in file
@@ -82,7 +71,9 @@ git_find -z ':(glob)**/*.go' | while read -r -d $'\0' file; do
     BUILD_TAG_FILE=$temp_file_name go generate -v "$file"
   else
     # if no +build tag is defined in interface file
-    go generate -v "$file"
+    # NOTE: This works around a bug in `go generate` with workspaces, which
+    # should be fixed in Go 1.22.1.
+    go -C "$(dirname "$file")" generate "$(basename "$file")"
   fi
 done