Combine PRs #70
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name: 'Combine PRs' | |
# Controls when the action will run - in this case triggered manually | |
on: | |
workflow_dispatch: | |
inputs: | |
branchPrefix: | |
description: 'Branch prefix to find combinable PRs based on' | |
required: true | |
default: 'dependabot' | |
mustBeGreen: | |
description: 'Only combine PRs that are green (status is success). Set to false if repo does not run checks' | |
type: boolean | |
required: true | |
default: true | |
combineBranchName: | |
description: 'Name of the branch to combine PRs into' | |
required: true | |
default: 'combine-prs-branch' | |
pullRequestLabel: | |
description: 'Label to add to the created PR' | |
required: true | |
default: 'combine-deps' | |
ignoreLabel: | |
description: 'Exclude PRs with this label' | |
required: true | |
default: 'nocombine' | |
# A workflow run is made up of one or more jobs that can run sequentially or in parallel | |
jobs: | |
# This workflow contains a single job called "combine-prs" | |
combine-prs: | |
# The type of runner that the job will run on | |
runs-on: ubuntu-latest | |
# Steps represent a sequence of tasks that will be executed as part of the job | |
steps: | |
- uses: actions/github-script@v6 | |
id: create-combined-pr | |
name: Create Combined PR | |
with: | |
github-token: ${{secrets.GITHUB_TOKEN}} | |
script: | | |
const pulls = await github.paginate('GET /repos/:owner/:repo/pulls', { | |
owner: context.repo.owner, | |
repo: context.repo.repo | |
}); | |
let branchesAndPRStrings = []; | |
let baseBranch = null; | |
let baseBranchSHA = null; | |
for (const pull of pulls) { | |
const branch = pull['head']['ref']; | |
console.log('Pull for branch: ' + branch); | |
if (branch.startsWith('${{ github.event.inputs.branchPrefix }}')) { | |
console.log('Branch matched prefix: ' + branch); | |
let statusOK = true; | |
if(${{ github.event.inputs.mustBeGreen }}) { | |
console.log('Checking green status: ' + branch); | |
const stateQuery = `query($owner: String!, $repo: String!, $pull_number: Int!) { | |
repository(owner: $owner, name: $repo) { | |
pullRequest(number:$pull_number) { | |
commits(last: 1) { | |
nodes { | |
commit { | |
statusCheckRollup { | |
state | |
} | |
} | |
} | |
} | |
} | |
} | |
}` | |
const vars = { | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
pull_number: pull['number'] | |
}; | |
const result = await github.graphql(stateQuery, vars); | |
const [{ commit }] = result.repository.pullRequest.commits.nodes; | |
const state = commit.statusCheckRollup.state | |
console.log('Validating status: ' + state); | |
if(state != 'SUCCESS') { | |
console.log('Discarding ' + branch + ' with status ' + state); | |
statusOK = false; | |
} | |
} | |
console.log('Checking labels: ' + branch); | |
const labels = pull['labels']; | |
for(const label of labels) { | |
const labelName = label['name']; | |
console.log('Checking label: ' + labelName); | |
if(labelName == '${{ github.event.inputs.ignoreLabel }}') { | |
console.log('Discarding ' + branch + ' with label ' + labelName); | |
statusOK = false; | |
} | |
} | |
if (statusOK) { | |
console.log('Adding branch to array: ' + branch); | |
const prString = '#' + pull['number'] + ' ' + pull['title']; | |
branchesAndPRStrings.push({ branch, prString }); | |
baseBranch = pull['base']['ref']; | |
baseBranchSHA = pull['base']['sha']; | |
} | |
} | |
} | |
if (branchesAndPRStrings.length == 0) { | |
core.setFailed('No PRs/branches matched criteria'); | |
return; | |
} | |
try { | |
await github.rest.git.createRef({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
ref: 'refs/heads/' + '${{ github.event.inputs.combineBranchName }}', | |
sha: baseBranchSHA | |
}); | |
} catch (error) { | |
console.log(error); | |
core.setFailed('Failed to create combined branch - maybe a branch by that name already exists?'); | |
return; | |
} | |
let combinedPRs = []; | |
let mergeFailedPRs = []; | |
for(const { branch, prString } of branchesAndPRStrings) { | |
try { | |
await github.rest.repos.merge({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
base: '${{ github.event.inputs.combineBranchName }}', | |
head: branch, | |
}); | |
console.log('Merged branch ' + branch); | |
combinedPRs.push(prString); | |
} catch (error) { | |
console.log('Failed to merge branch ' + branch); | |
mergeFailedPRs.push(prString); | |
} | |
} | |
console.log('Creating combined PR'); | |
const combinedPRsString = combinedPRs.join('\n'); | |
let body = '✅ This PR was created by the Combine PRs action by combining the following PRs:\n' + combinedPRsString; | |
if(mergeFailedPRs.length > 0) { | |
const mergeFailedPRsString = mergeFailedPRs.join('\n'); | |
body += '\n\n⚠️ The following PRs were left out due to merge conflicts:\n' + mergeFailedPRsString | |
} | |
const createdPullRequest = await github.rest.pulls.create({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
title: 'Combined PR', | |
head: '${{ github.event.inputs.combineBranchName }}', | |
base: baseBranch, | |
body: body | |
}); | |
console.log('Repo created, adding label to PR number: ', createdPullRequest.data.number); | |
await github.rest.issues.addLabels({ | |
issue_number: createdPullRequest.data.number, | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
labels: ['${{ github.event.inputs.pullRequestLabel }}'] | |
}) |