Fix verify-generated-swagger-docs script

hack/verify-generated-swagger-docs.sh

@@ -18,7 +18,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
 source "${KUBE_ROOT}/hack/lib/init.sh"
 
 kube::golang::setup_env
@@ -38,29 +38,57 @@ if [[ ! -x "$genswaggertypedocs" ]]; then
   exit 1
 fi
 
-DIFFROOT="${KUBE_ROOT}/pkg"
-TMP_DIFFROOT="${KUBE_ROOT}/_tmp/pkg"
-_tmp="${KUBE_ROOT}/_tmp"
-
-cleanup() {
-  rm -rf "${_tmp}"
+_tmpdir="$(kube::realpath "$(mktemp -d -t swagger-docs.XXXXXX)")"
+function swagger_cleanup {
+  rm -rf "${_tmpdir}"
 }
-trap "cleanup" EXIT SIGINT
+kube::util::trap_add swagger_cleanup EXIT
 
-cleanup
+# Copy the contents of the kube directory into the nice clean place
+_kubetmp="${_tmpdir}/src/k8s.io"
+mkdir -p "${_kubetmp}"
+# should create ${_kubetmp}/kubernetes
+git archive --format=tar --prefix=kubernetes/ "$(git write-tree)" | (cd "${_kubetmp}" && tar xf -)
+_kubetmp="${_kubetmp}/kubernetes"
+# Do all our work in the new GOPATH
+export GOPATH="${_tmpdir}"
 
-mkdir -p "${TMP_DIFFROOT}"
-cp -a "${DIFFROOT}"/* "${TMP_DIFFROOT}/"
+find_files() {
+  find . -not \( \
+      \( \
+        -wholename './output' \
+        -o -wholename './.git' \
+        -o -wholename './_output' \
+        -o -wholename './_gopath' \
+        -o -wholename './release' \
+        -o -wholename './target' \
+        -o -wholename '*/third_party/*' \
+        -o -wholename '*/vendor/*' \
+        -o -wholename './staging/src/k8s.io/client-go/*vendor/*' \
+      \) -prune \
+    \) -name 'types_swagger_doc_generated.go'
+}
+while IFS=$'\n' read -r line; do TARGET_FILES+=("$line"); done < <(find_files)
+
+pushd "${_kubetmp}" > /dev/null 2>&1
+  # Update the generated swagger docs
+  hack/update-generated-swagger-docs.sh
+popd > /dev/null 2>&1
 
-"${KUBE_ROOT}/hack/update-generated-swagger-docs.sh"
-echo "diffing ${DIFFROOT} against freshly generated swagger type documentation"
 ret=0
-diff --exclude=".import-restrictions" -Naupr -I 'Auto generated by' "${DIFFROOT}" "${TMP_DIFFROOT}" || ret=$?
-cp -a "${TMP_DIFFROOT}"/* "${DIFFROOT}/"
-if [[ $ret -eq 0 ]]
-then
-  echo "${DIFFROOT} up to date."
-else
-  echo "${DIFFROOT} is out of date. Please run hack/update-generated-swagger-docs.sh"
-  exit 1
-fi
+
+pushd "${KUBE_ROOT}" > /dev/null 2>&1
+  # Test for diffs
+  _output=""
+  for file in ${TARGET_FILES[*]}; do
+    _output="${_output}$(diff -Naupr -I 'Auto generated by' "${KUBE_ROOT}/${file}" "${_kubetmp}/${file}")" || ret=1
+  done
+
+  if [[ ${ret} -gt 0 ]]; then
+    echo "Generated swagger type documentation is out of date:" >&2
+    echo "${_output}" >&2
+    exit ${ret}
+  fi
+popd > /dev/null 2>&1
+
+echo "Generated swagger type documentation up to date."