bazel: Add workspace status for RBE.

.gitignore

@@ -3,4 +3,4 @@ bazel-genfiles
 bazel-glict
 bazel-out
 bazel-testlogs
-
+.bazelrc.buildbuddysecrets

tools/bazel.rc

@@ -22,6 +22,10 @@ build:remote --remote_cache=grpcs://remote.buildbuddy.io
 build:remote --remote_timeout=3600
 build:remote --remote_executor=grpcs://remote.buildbuddy.io
 
+# build:remote --build_metadata=REPO_URL=https://github.com/ivucica/glict
+# build:remote --build_metadata=VISIBILITY=PUBLIC  # default for unauthenticated, could be put into buildbuddysecrets if authenticated
+build:remote --workspace_status_command=$(pwd)/workspace_status.sh
+
 # readonly:
 #build:remote --noremote_upload_local_results # Uploads logs & artifacts without writing to cache
 # toplevel:
@@ -37,6 +41,11 @@ build:remotecache --remote_cache=grpcs://remote.buildbuddy.io
 build:remotecache --remote_timeout=3600
 build:remotecache --remote_executor=grpcs://remote.buildbuddy.io
 
+# build:remotecache --build_metadata=REPO_URL=https://github.com/ivucica/glict
+# build:remotecache --build_metadata=VISIBILITY=PUBLIC  # default for unauthenticated, could be put into buildbuddysecrets if authenticated
+build:remotecache --workspace_status_command=$(pwd)/workspace_status.sh
+
+
 # readonly:
 #build:remotecache --noremote_upload_local_results # Uploads logs & artifacts without writing to cache
 # toplevel:

tools/latest_version_tag.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -e
+
+# Prints the latest BuildBuddy version tag, like "v2.12.8"
+git tag -l 'v*' --sort=creatordate |
+    perl -nle 'if (/^v\d+\.\d+\.\d+$/) { print $_ }' |
+    tail -n1
+
+# https://raw.githubusercontent.com/buildbuddy-io/buildbuddy/0e1c95e47bb668edfbfe62f7eb6fc7795f1f4576/tools/latest_version_tag.sh

workspace_status.sh

@@ -0,0 +1,49 @@
+#!/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 $commit_sha"
+
+# https://raw.githubusercontent.com/buildbuddy-io/buildbuddy/0e1c95e47bb668edfbfe62f7eb6fc7795f1f4576/workspace_status.sh
+# other additions:
+echo 'TAGS rbe'
+echo 'ALLOW_ENV RBE_ALLOWED_ENV_*'
+echo "BUILDBUDDY_LINKS [GitHub]($repo_url)"
+
+# some other items:
+# PATTERN: override the build command pattern
+# USER: override USER/GITHUB_ACTOR/GITLAB_USER_NAME/BUILDKITE_BUILD_CREATOR/CIRCLE_USERNAME
+# ROLE: if set to CI, treat as a CI build
+# TEST_GROUPS: group test prefixes together, e.g. //foo/bar,//foo/baz
+# BRANCH_NAME: pulled from GITHUB_REF, GITHUB_HEAD_REF, GIT_BRANCH, CI_COMMIT_BRANCH etc