Make the Prow bump script smarter

The script will now automatically detect which components need to be bumped and determine the last time they were bumped to ensure that it is not easy to forget to bump. Furthermore, this allows for a daily bump to occur that will pick up all the changes that ocurred during that day. Signed-off-by: Steve Kuznetsov <[email protected]>
kubernetes · Aug 31, 2017 · 2a1bdb8 · 2a1bdb8
1 parent f766d7a
commit 2a1bdb8
Showing 1 changed file with 56 additions and 10 deletions.
diff --git a/prow/bump.sh b/prow/bump.sh
@@ -13,8 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-if [ "$#" -ne 1 ]; then
-  echo "usage: $0 [program]"
+if [ "$#" -ne 0 ]; then
+  echo "usage: $0"
   exit 1
 fi
 
@@ -30,13 +30,59 @@ fi
 
 cd $(dirname $0)
 
-makefile_version_re="^\(${1}_VERSION.*=\s*\)"
-version=$($SED -n "s/$makefile_version_re//Ip" Makefile)
-new_version=$(awk -F. '{print $1 "." $2+1}' <<< $version)
+function bump_component() {
+	local component="$1"
 
-echo "program: $1"
-echo "old version: $version"
-echo "new version: $new_version"
+	makefile_version_re="^\(${1}_VERSION.*=\s*\)"
+	version=$($SED -n "s/$makefile_version_re//Ip" Makefile)
+	new_version=$(awk -F. '{print $1 "." $2+1}' <<< $version)
 
-$SED -i "s/$makefile_version_re.*/\1$new_version/I" Makefile
-$SED -i "s/\(${1}:\)[0-9.]*/\1$new_version/I" cluster/*.yaml
+	echo "program: $1"
+	echo "old version: $version"
+	echo "new version: $new_version"
+
+	$SED -i "s/$makefile_version_re.*/\1$new_version/I" Makefile
+	$SED -i "s/\(${1}:\)[0-9.]*/\1$new_version/I" cluster/*.yaml
+}
+
+commit_prefix="Bumped deployment versions for:"
+last_bump="$( git log --grep="${commit_prefix}" --pretty=%H | head -n 1 )"
+if [[ -z "${last_bump}" ]]; then
+	# we haven't used the script yet, so we need to find the last
+	# commit that changed a VERSION field in the Makefile instead
+	for commit in $( git log --pretty=%H -- ./Makefile ); do
+		if git diff "${commit}~1..${commit}" -- ./Makefile | grep -Eq "[+-].*VERSION"; then
+			last_bump="${commit}"
+			break
+		fi
+	done
+fi
+
+components=( $( find ./cmd/ -mindepth 1 -maxdepth 1 -type d -print0 | xargs --null -L 1 basename ) )
+bumped_components=()
+for component in "${components[@]}"; do
+	if [[ -n "$( git diff "${last_bump}~1..HEAD" -- "./cmd/${component}/" "./${component}/" )" ]]; then
+		bump_component "${component}"
+		bumped_components+=( "${component}" )
+	fi
+done
+
+# if we haven't already bumped hook, check for plugin updates
+hook_bumped=0
+for component in "${bumped_components[@]}"; do
+	if [[ "${component}" == "hook" ]]; then
+		hook_bumped=1
+	fi
+done
+
+if [[ "${hook_bumped}" == 0 ]]; then
+	if [[ -n "$( git diff "${last_bump}~1..HEAD" -- "./plugins/" )" ]]; then
+		bump_component "hook"
+		bumped_components+=( "hook" )
+	fi
+fi
+
+if [[ "${#bumped_components[@]}" -gt 0 ]]; then
+	git add Makefile cluster/*.yaml
+	git commit -m "${commit_prefix} ${bumped_components[*]}"
+fi