Switch git hooks to use pre-commit

hooks/pre-commit

@@ -0,0 +1,93 @@
+#!/bin/bash
+
+KUBE_HOOKS_DIR="$(dirname "$(test -L "$0" && echo "$(dirname $0)/$(readlink "$0")" || echo "$0")")"
+
+files_need_gofmt=()
+files_need_boilerplate=()
+files_need_description=()
+
+echo -ne "Checking for files that need gofmt..."
+files=($(git diff --cached --name-only --diff-filter ACM | grep "\.go" | grep -v -e "third_party" -e "Godeps"))
+for file in "${files[@]}"; do
+  # Check for files that fail gofmt.
+  diff="$(git show ":${file}" | gofmt -s -d)"
+  if [[ -n "$diff" ]]; then
+    files_need_gofmt+=("${file}")
+  fi
+done
+echo "done"
+
+echo -ne "Checking for files that need boilerplate..."
+boiler="${KUBE_HOOKS_DIR}/boilerplate.py"
+# Check for go files without the required boilerplate.
+if [[ ${#files[@]} -gt 0 ]]; then
+  files_need_boilerplate+=($("${boiler}" "go" "${files[@]}"))
+fi
+
+# Check for sh files without the required boilerplate.
+files=($(git diff --cached --name-only --diff-filter ACM | grep "\.sh" | grep -v -e "third_party" -e "Godeps"))
+if [[ ${#files[@]} -gt 0 ]]; then
+  files_need_boilerplate+=($("${boiler}" "sh" "${files[@]}"))
+fi
+
+# Check for py files without the required boilerplate.
+files=($(git diff --cached --name-only --diff-filter ACM | grep "\.py" | grep -v -e "third_party" -e "Godeps"))
+if [[ ${#files} -gt 0 ]]; then
+  files_need_boilerplate+=($("${boiler}" "py" "${files[@]}"))
+fi
+echo "done"
+
+echo -ne "Checking for API descriptions..."
+# Check API schema definitions for field descriptions
+for file in $(git diff --cached --name-only --diff-filter ACM | egrep "pkg/api/v.[^/]*/types\.go" | grep -v "third_party"); do
+  # Check for files with fields without description tags
+  descriptionless=$("${KUBE_HOOKS_DIR}/description.sh" "${file}")
+  if [[ "$descriptionless" -eq "0" ]]; then
+    files_need_description+=("${file}")
+  fi
+done
+echo "done"
+
+ret=0
+if [[ "${#files_need_gofmt[@]}" -ne 0 ]]; then
+  echo
+  echo "# *** ERROR: *** Some files have not been gofmt'd.  To fix these"
+  echo "# errors, run gofmt -s -w <file>, or cut and paste the following:"
+  echo "#   gofmt -s -w ${files_need_gofmt[@]}"
+  echo
+  ret=1
+fi
+
+if [[ "${#files_need_boilerplate[@]}" -ne 0 ]]; then
+  echo
+  echo "# *** ERROR: *** Some files are missing the required boilerplate"
+  echo "# header from hooks/boilerplate.txt:"
+  for file in "${files_need_boilerplate[@]}"; do
+    echo "#   ${file}"
+  done
+  echo
+  ret=1
+fi
+
+if [[ "${#files_need_description[@]}" -ne 0 ]]; then
+  echo
+  echo "# *** ERROR: *** Some API files are missing the required field descriptions"
+  echo "# Add description tags to all non-inline fields in the following files:"
+  for file in "${files_need_description[@]}"; do
+    echo "#   ${file}"
+  done
+  echo
+  ret=1
+fi
+
+echo -ne "Checking for docs that need updating..."
+if ! hack/verify-gendocs.sh > /dev/null; then
+  echo
+  echo "# *** ERROR: *** docs are out of sync between cli and markdown"
+  echo "# run hack/run-gendocs.sh > docs/kubectl.md to regenerate"
+  echo
+  ret=1
+fi
+echo "done"
+
+exit $ret