Report mkfile metrics with --mk-metrics
Combined with roboleaf CI changes to pass this flag and subsequent
pipeline changes, this will allow basic mkfile metrics to be
dashboarded, which will help track mk2bp progress.
Bug: 217764943
Test: manual; verified mk_metrics.pb is generated iff --mk-metrics is
specified, used printproto on result
Change-Id: I348994b4d7e3479d0dc04de0276b94a702aac95b
diff --git a/ui/metrics/mk_metrics_proto/regen.sh b/ui/metrics/mk_metrics_proto/regen.sh
new file mode 100755
index 0000000..64018d4
--- /dev/null
+++ b/ui/metrics/mk_metrics_proto/regen.sh
@@ -0,0 +1,29 @@
+#!/bin/bash -e
+
+# Copyright 2022 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Generates the golang source file of the mk_metrics.proto protobuf file.
+
+function die() { echo "ERROR: $1" >&2; exit 1; }
+
+readonly error_msg="Maybe you need to run 'lunch aosp_arm-eng && m aprotoc blueprint_tools'?"
+
+if ! hash aprotoc &>/dev/null; then
+ die "could not find aprotoc. ${error_msg}"
+fi
+
+if ! aprotoc --go_out=paths=source_relative:. mk_metrics.proto; then
+ die "build failed. ${error_msg}"
+fi