workspace status

.bazelrc

@@ -2,6 +2,7 @@ build:bb --bes_results_url=https://app.buildbuddy.io/invocation/
 build:bb --bes_backend=grpcs://remote.buildbuddy.io
 build:bb --remote_cache=grpcs://remote.buildbuddy.io
 build:bb --remote_timeout=3600
+build:bb --workspace_status_command=$(pwd)/workspace_status.sh
 
 run -c opt --show_loading_progress=false --show_progress=false --ui_event_filters=error
 run:verbose -c dbg --show_loading_progress=true --show_progress=true --ui_event_filters=info,error,debug

workspace_status.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# This script will be run bazel when building process starts to
+# generate key-value information that represents the status of the
+# workspace. The output should be like
+#
+# KEY1 VALUE1
+# KEY2 VALUE2
+#
+# If the script exits with non-zero code, it's considered as a failure
+# and the output will be discarded.
+
+set -eo pipefail # exit immediately if any command fails.
+
+function remove_url_credentials() {
+  which perl >/dev/null && perl -pe 's#//.*?:.*?@#//#' || cat
+}
+
+repo_url=$(git config --get remote.origin.url | remove_url_credentials)
+echo "REPO_URL $repo_url"
+
+commit_sha=$(git rev-parse HEAD)
+echo "COMMIT_SHA $commit_sha"
+
+git_branch=$(git rev-parse --abbrev-ref HEAD)
+echo "GIT_BRANCH $git_branch"
+
+git_tree_status=$(git diff-index --quiet HEAD -- && echo 'Clean' || echo 'Modified')
+echo "GIT_TREE_STATUS $git_tree_status"
+
+# Note: the "STABLE_" suffix causes these to be part of the "stable" workspace
+# status, which may trigger rebuilds of certain targets if these values change
+# and you're building with the "--stamp" flag.
+latest_version_tag=$(./tools/latest_version_tag.sh)
+echo "STABLE_VERSION_TAG $latest_version_tag"
+echo "STABLE_COMMIT_SHA $commit_sha