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Create combine-dependabot-prs.yml
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.github/workflows/combine-dependabot-prs.yml
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152
.github/workflows/combine-dependabot-prs.yml
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name: 'Combine Dependabot PRs'
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# Controls when the action will run - in this case triggered manually
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on:
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workflow_dispatch:
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inputs:
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branchPrefix:
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description: 'Branch prefix to find combinable PRs based on'
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required: true
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default: 'dependabot'
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mustBeGreen:
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description: 'Only combine PRs that are green (status is success). Set to false if repo does not run checks'
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type: boolean
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required: true
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default: true
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combineBranchName:
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description: 'Name of the branch to combine PRs into'
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required: true
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default: 'combined-prs'
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ignoreLabel:
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description: 'Exclude PRs with this label'
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required: true
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default: 'nocombine'
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# A workflow run is made up of one or more jobs that can run sequentially or in parallel
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jobs:
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# This workflow contains a single job called "combine-prs"
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combine-prs:
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# The type of runner that the job will run on
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runs-on: ubuntu-22.04
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# Steps represent a sequence of tasks that will be executed as part of the job
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steps:
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- uses: actions/github-script@v6
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id: create-combined-pr
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name: Create Combined PR
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with:
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github-token: ${{secrets.GITHUB_TOKEN}}
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script: |
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const pulls = await github.paginate('GET /repos/:owner/:repo/pulls', {
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owner: context.repo.owner,
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repo: context.repo.repo
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});
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let branchesAndPRStrings = [];
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let baseBranch = null;
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let baseBranchSHA = null;
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for (const pull of pulls) {
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const branch = pull['head']['ref'];
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console.log('Pull for branch: ' + branch);
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if (branch.startsWith('${{ github.event.inputs.branchPrefix }}')) {
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console.log('Branch matched prefix: ' + branch);
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let statusOK = true;
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if(${{ github.event.inputs.mustBeGreen }}) {
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console.log('Checking green status: ' + branch);
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const stateQuery = `query($owner: String!, $repo: String!, $pull_number: Int!) {
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repository(owner: $owner, name: $repo) {
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pullRequest(number:$pull_number) {
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commits(last: 1) {
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nodes {
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commit {
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statusCheckRollup {
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state
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}
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}
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}
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}
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}
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}
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}`
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const vars = {
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owner: context.repo.owner,
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repo: context.repo.repo,
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pull_number: pull['number']
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};
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const result = await github.graphql(stateQuery, vars);
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const [{ commit }] = result.repository.pullRequest.commits.nodes;
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const state = commit.statusCheckRollup.state
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console.log('Validating status: ' + state);
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if(state != 'SUCCESS') {
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console.log('Discarding ' + branch + ' with status ' + state);
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statusOK = false;
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}
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}
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console.log('Checking labels: ' + branch);
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const labels = pull['labels'];
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for(const label of labels) {
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const labelName = label['name'];
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console.log('Checking label: ' + labelName);
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if(labelName == '${{ github.event.inputs.ignoreLabel }}') {
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console.log('Discarding ' + branch + ' with label ' + labelName);
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statusOK = false;
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}
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}
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if (statusOK) {
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console.log('Adding branch to array: ' + branch);
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const prString = '#' + pull['number'] + ' ' + pull['title'];
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branchesAndPRStrings.push({ branch, prString });
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baseBranch = pull['base']['ref'];
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baseBranchSHA = pull['base']['sha'];
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}
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}
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}
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if (branchesAndPRStrings.length == 0) {
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core.setFailed('No PRs/branches matched criteria');
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return;
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}
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try {
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await github.rest.git.createRef({
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owner: context.repo.owner,
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repo: context.repo.repo,
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ref: 'refs/heads/' + '${{ github.event.inputs.combineBranchName }}',
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sha: baseBranchSHA
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});
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} catch (error) {
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console.log(error);
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core.setFailed('Failed to create combined branch - maybe a branch by that name already exists?');
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return;
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}
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let combinedPRs = [];
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let mergeFailedPRs = [];
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for(const { branch, prString } of branchesAndPRStrings) {
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try {
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await github.rest.repos.merge({
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owner: context.repo.owner,
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repo: context.repo.repo,
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base: '${{ github.event.inputs.combineBranchName }}',
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head: branch,
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});
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console.log('Merged branch ' + branch);
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combinedPRs.push(prString);
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} catch (error) {
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console.log('Failed to merge branch ' + branch);
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mergeFailedPRs.push(prString);
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}
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}
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console.log('Creating combined PR');
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const combinedPRsString = combinedPRs.join('\n');
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let body = '✅ This PR was created by the Combine PRs action by combining the following PRs:\n' + combinedPRsString;
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if(mergeFailedPRs.length > 0) {
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const mergeFailedPRsString = mergeFailedPRs.join('\n');
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body += '\n\n⚠️ The following PRs were left out due to merge conflicts:\n' + mergeFailedPRsString
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}
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await github.rest.pulls.create({
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owner: context.repo.owner,
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repo: context.repo.repo,
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title: 'Combined PR',
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head: '${{ github.event.inputs.combineBranchName }}',
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base: baseBranch,
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body: body
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});
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