@@ -28,11 +28,23 @@ function update_config() {
2828 sed -i -e " s/^${key_word} .*$/${key_word} : ${new_value} /" " ${file} "
2929}
3030
31+ # Update an action to a new version in GitHub action.
32+ function update_action() {
33+ local key_word=$1
34+ local new_value=$2
35+ local file=$3
36+ echo " Update ${key_word} to ${new_value} in ${file} "
37+ # use a different delimiter because the key_word contains "/".
38+ sed -i -e " s|${key_word} @v.*$|${key_word} @v${new_value} |" " ${file} "
39+ }
40+
3141# The parameters of this script is:
3242# 1. base_branch, the base branch of the result pull request.
3343# 2. repo, organization/repo-name, e.g., googleapis/google-cloud-java
3444# 3. [optional] generation_config, the path to the generation configuration,
3545# the default value is generation_config.yaml in the repository root.
46+ # 4. [optional] workflow, the library generation workflow file,
47+ # the default value is .github/workflows/hermetic_library_generation.yaml.
3648while [[ $# -gt 0 ]]; do
3749key=" $1 "
3850case " ${key} " in
@@ -48,6 +60,10 @@ case "${key}" in
4860 generation_config=" $2 "
4961 shift
5062 ;;
63+ --workflow)
64+ workflow=" $2 "
65+ shift
66+ ;;
5167 * )
5268 echo " Invalid option: [$1 ]"
5369 exit 1
@@ -71,21 +87,34 @@ if [ -z "${generation_config}" ]; then
7187 echo " Use default generation config: ${generation_config} "
7288fi
7389
90+ if [ -z " ${workflow} " ]; then
91+ workflow=" .github/workflows/hermetic_library_generation.yaml"
92+ echo " Use default library generation workflow file: ${workflow} "
93+ fi
94+
7495current_branch=" generate-libraries-${base_branch} "
7596title=" chore: Update generation configuration at $( date) "
7697
77- # try to find a open pull request associated with the branch
98+ git checkout " ${base_branch} "
99+ # Try to find a open pull request associated with the branch
78100pr_num=$( gh pr list -s open -H " ${current_branch} " -q . --json number | jq " .[] | .number" )
79- # create a branch if there's no open pull request associated with the
101+ # Create a branch if there's no open pull request associated with the
80102# branch; otherwise checkout the pull request.
81103if [ -z " ${pr_num} " ]; then
82104 git checkout -b " ${current_branch} "
105+ # Push the current branch to remote so that we can
106+ # compare the commits later.
107+ git push -u origin " ${current_branch} "
83108else
84109 gh pr checkout " ${pr_num} "
85110fi
86111
112+ # Only allow fast-forward merging; exit with non-zero result if there's merging
113+ # conflict.
114+ git merge -m " chore: merge ${base_branch} into ${current_branch} " " ${base_branch} "
115+
87116mkdir tmp-googleapis
88- # use partial clone because only commit history is needed.
117+ # Use partial clone because only commit history is needed.
89118git clone --filter=blob:none https://github.com/googleapis/googleapis.git tmp-googleapis
90119pushd tmp-googleapis
91120git pull
@@ -94,25 +123,43 @@ popd
94123rm -rf tmp-googleapis
95124update_config " googleapis_commitish" " ${latest_commit} " " ${generation_config} "
96125
97- # update gapic-generator-java version to the latest
126+ # Update gapic-generator-java version to the latest
98127latest_version=$( get_latest_released_version " com.google.api" " gapic-generator-java" )
99128update_config " gapic_generator_version" " ${latest_version} " " ${generation_config} "
100129
101- # update libraries-bom version to the latest
130+ # Update composite action version to latest gapic-generator-java version
131+ update_action " googleapis/sdk-platform-java/.github/scripts" \
132+ " ${latest_version} " \
133+ " ${workflow} "
134+
135+ # Update libraries-bom version to the latest
102136latest_version=$( get_latest_released_version " com.google.cloud" " libraries-bom" )
103137update_config " libraries_bom_version" " ${latest_version} " " ${generation_config} "
104138
105- git add " ${generation_config} "
139+ git add " ${generation_config} " " ${workflow} "
106140changed_files=$( git diff --cached --name-only)
107141if [[ " ${changed_files} " == " " ]]; then
108142 echo " The latest generation config is not changed."
109143 echo " Skip committing to the pull request."
144+ else
145+ git commit -m " ${title} "
146+ fi
147+
148+ # There are potentially at most two commits: merge commit and change commit.
149+ # We want to exit the script if no commit happens (otherwise this will be an
150+ # infinite loop).
151+ # `git cherry` is a way to find whether the local branch has commits that are
152+ # not in the remote branch.
153+ # If we find any such commit, push them to remote branch.
154+ unpushed_commit=$( git cherry -v " origin/${current_branch} " | wc -l)
155+ if [[ " ${unpushed_commit} " -eq 0 ]]; then
156+ echo " No unpushed commits, exit"
110157 exit 0
111158fi
112- git commit -m " ${title} "
159+
113160if [ -z " ${pr_num} " ]; then
114161 git remote add remote_repo https://cloud-java-bot:" ${GH_TOKEN} @github.com/${repo} .git"
115- git fetch -q --unshallow remote_repo
162+ git fetch -q remote_repo
116163 git push -f remote_repo " ${current_branch} "
117164 gh pr create --title " ${title} " --head " ${current_branch} " --body " ${title} " --base " ${base_branch} "
118165else
0 commit comments