Comment on an issue #8
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name: Comment on an issue | |
on: | |
workflow_run: | |
workflows: | |
- "Check code formatting" | |
- "Check for private emails used in PRs" | |
- "PR Request Release Note" | |
types: | |
- completed | |
permissions: | |
contents: read | |
jobs: | |
pr-comment: | |
runs-on: ubuntu-latest | |
permissions: | |
pull-requests: write | |
if: > | |
github.event.workflow_run.event == 'pull_request' && | |
( | |
github.event.workflow_run.conclusion == 'success' || | |
github.event.workflow_run.conclusion == 'failure' | |
) | |
steps: | |
- name: Fetch Sources | |
uses: actions/checkout@v4 | |
with: | |
sparse-checkout: | | |
.github/workflows/unprivileged-download-artifact/action.yml | |
sparse-checkout-cone-mode: false | |
- name: 'Download artifact' | |
uses: ./.github/workflows/unprivileged-download-artifact | |
id: download-artifact | |
with: | |
run-id: ${{ github.event.workflow_run.id }} | |
artifact-name: workflow-args | |
- name: 'Comment on PR' | |
if: steps.download-artifact.outputs.artifact-id != '' | |
uses: actions/github-script@v3 | |
with: | |
github-token: ${{ secrets.GITHUB_TOKEN }} | |
script: | | |
var fs = require('fs'); | |
const comments = JSON.parse(fs.readFileSync('./comments')); | |
if (!comments || comments.length == 0) { | |
return; | |
} | |
let runInfo = await github.actions.getWorkflowRun({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
run_id: context.payload.workflow_run.id | |
}); | |
console.log(runInfo); | |
// Query to find the number of the pull request that triggered this job. | |
// The associated pull requests are based off of the branch name, so if | |
// you create a pull request for a branch, close it, and then create | |
// another pull request with the same branch, then this query will return | |
// two associated pull requests. This is why we have to fetch all the | |
// associated pull requests and then iterate through them to find the | |
// one that is open. | |
const gql_query = ` | |
query($repo_owner : String!, $repo_name : String!, $branch: String!) { | |
repository(owner: $repo_owner, name: $repo_name) { | |
ref (qualifiedName: $branch) { | |
associatedPullRequests(first: 100) { | |
nodes { | |
baseRepository { | |
owner { | |
login | |
} | |
} | |
number | |
state | |
} | |
} | |
} | |
} | |
} | |
` | |
const gql_variables = { | |
repo_owner: runInfo.data.head_repository.owner.login, | |
repo_name: runInfo.data.head_repository.name, | |
branch: runInfo.data.head_branch | |
} | |
const gql_result = await github.graphql(gql_query, gql_variables); | |
console.log(gql_result); | |
// If the branch for the PR was deleted before this job has a chance | |
// to run, then the ref will be null. This can happen if someone: | |
// 1. Rebase the PR, which triggers some workflow. | |
// 2. Immediately merges the PR and deletes the branch. | |
// 3. The workflow finishes and triggers this job. | |
if (!gql_result.repository.ref) { | |
console.log("Ref has been deleted"); | |
return; | |
} | |
console.log(gql_result.repository.ref.associatedPullRequests.nodes); | |
var pr_number = 0; | |
gql_result.repository.ref.associatedPullRequests.nodes.forEach((pr) => { | |
// The largest PR number is the one we care about. The only way | |
// to have more than one associated pull requests is if all the | |
// old pull requests are in the closed state. | |
if (pr.baseRepository.owner.login = context.repo.owner && pr.number > pr_number) { | |
pr_number = pr.number; | |
} | |
}); | |
if (pr_number == 0) { | |
console.log("Error retrieving pull request number"); | |
return; | |
} | |
await comments.forEach(function (comment) { | |
if (comment.id) { | |
// Security check: Ensure that this comment was created by | |
// the github-actions bot, so a malicious input won't overwrite | |
// a user's comment. | |
github.issues.getComment({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
comment_id: comment.id | |
}).then((old_comment) => { | |
console.log(old_comment); | |
if (old_comment.data.user.login != "github-actions[bot]") { | |
console.log("Invalid comment id: " + comment.id); | |
return; | |
} | |
github.issues.updateComment({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
issue_number: pr_number, | |
comment_id: comment.id, | |
body: comment.body | |
}); | |
}); | |
} else { | |
github.issues.createComment({ | |
owner: context.repo.owner, | |
repo: context.repo.repo, | |
issue_number: pr_number, | |
body: comment.body | |
}); | |
} | |
}); | |
- name: Dump comments file | |
if: >- | |
always() && | |
steps.download-artifact.outputs.artifact-id != '' | |
run: cat comments |