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Comment with mypy_primer diff #43

Comment with mypy_primer diff

Comment with mypy_primer diff #43

# This workflow runs when the "Run mypy_primer on PR" workflow completes.
# It downloads the diff from the other workflow instances and creates
# a summary comment in the PR.
name: Comment with mypy_primer diff
on:
workflow_run:
workflows:
- Run mypy_primer on PR
types:
- completed
permissions:
contents: read
pull-requests: write
jobs:
comment:
name: Comment PR from mypy_primer
runs-on: ubuntu-latest
if: ${{ github.event.workflow_run.conclusion == 'success' }}
steps:
- name: Download diffs
uses: actions/github-script@v6
with:
script: |
const fs = require('fs');
const artifacts = await github.rest.actions.listWorkflowRunArtifacts({
owner: context.repo.owner,
repo: context.repo.repo,
run_id: ${{ github.event.workflow_run.id }},
});
const [matchArtifact] = artifacts.data.artifacts.filter((artifact) =>
artifact.name == "mypy_primer_diffs");
const download = await github.rest.actions.downloadArtifact({
owner: context.repo.owner,
repo: context.repo.repo,
artifact_id: matchArtifact.id,
archive_format: "zip",
});
fs.writeFileSync("diff.zip", Buffer.from(download.data));
- run: unzip diff.zip
- run: |
cat diff_*.txt | tee fulldiff.txt
- name: Post comment
id: post-comment
uses: actions/github-script@v6
with:
github-token: ${{ secrets.GITHUB_TOKEN }}
script: |
const MAX_CHARACTERS = 30000
const MAX_CHARACTERS_PER_PROJECT = MAX_CHARACTERS / 3
const fs = require('fs')
let data = fs.readFileSync('fulldiff.txt', { encoding: 'utf8' })
function truncateIfNeeded(original, maxLength) {
if (original.length <= maxLength) {
return original
}
let truncated = original.substring(0, maxLength)
// further, remove last line that might be truncated
truncated = truncated.substring(0, truncated.lastIndexOf('\n'))
let lines_truncated = original.split('\n').length - truncated.split('\n').length
return `${truncated}\n\n... (truncated ${lines_truncated} lines) ...`
}
const projects = data.split('\n\n')
// don't let one project dominate
data = projects.map(project => truncateIfNeeded(project, MAX_CHARACTERS_PER_PROJECT)).join('\n\n')
// posting comment fails if too long, so truncate
data = truncateIfNeeded(data, MAX_CHARACTERS)
console.log("Diff from mypy_primer:")
console.log(data)
let body
if (data.trim()) {
body = 'Diff from [mypy_primer](https://github.com/hauntsaninja/mypy_primer), showing the effect of this PR on open source code:\n```diff\n' + data + '```'
} else {
body = "According to [mypy_primer](https://github.com/hauntsaninja/mypy_primer), this change doesn't affect type check results on a corpus of open source code. ✅"
}
const prNumber = parseInt(fs.readFileSync("pr_number.txt", { encoding: "utf8" }))
await github.rest.issues.createComment({
issue_number: prNumber,
owner: context.repo.owner,
repo: context.repo.repo,
body
})
return prNumber
- name: Hide old comments
# v0.4.0
uses: kanga333/comment-hider@c12bb20b48aeb8fc098e35967de8d4f8018fffdf
with:
github_token: ${{ secrets.GITHUB_TOKEN }}
leave_visible: 1
issue_number: ${{ steps.post-comment.outputs.result }}