tools: change commit fetch limiting in find-inactive-collaborators

GitHub Action workflows can be told to clone a certain number of commits
or else everything. Change find-inactive-collaborators to take a number
of commits to examine rather than a date range so that the parameter can
be used in GitHub Actions.

PR-URL: #39362
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

.github/workflows/find-inactive-collaborators.yml

@@ -7,18 +7,24 @@ on:
 
   workflow_dispatch:
 
+env:
+  NODE_VERSION: 16.x
+  NUM_COMMITS: 5000
+
 jobs:
   find:
 
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
-
-      - name: Install Node.js
+        with:
+          fetch-depth: ${{ env.NUM_COMMITS }}
+
+      - name: Use Node.js ${{ env.NODE_VERSION }}
         uses: actions/setup-node@v2
         with:
-          node-version: 16.x
+          node-version: ${{ env.NODE_VERSION }}
 
       - name: Find inactive collaborators
-        run: tools/find-inactive-collaborators.mjs '1 year ago'
+        run: tools/find-inactive-collaborators.mjs ${{ env.NUM_COMMITS }}

tools/find-inactive-collaborators.mjs

@@ -8,7 +8,7 @@ import cp from 'node:child_process';
 import fs from 'node:fs';
 import readline from 'node:readline';
 
-const SINCE = process.argv[2] || '6 months ago';
+const SINCE = +process.argv[2] || 5000;
 
 async function runGitCommand(cmd, mapFn) {
   const childProcess = cp.spawn('/bin/sh', ['-c', cmd], {
@@ -36,19 +36,19 @@ async function runGitCommand(cmd, mapFn) {
 
 // Get all commit authors during the time period.
 const authors = await runGitCommand(
-  `git shortlog -n -s --since="${SINCE}"`,
+  `git shortlog -n -s --max-count="${SINCE}" HEAD`,
   (line) => line.trim().split('\t', 2)[1]
 );
 
 // Get all commit landers during the time period.
 const landers = await runGitCommand(
-  `git shortlog -n -s -c --since="${SINCE}"`,
+  `git shortlog -n -s -c --max-count="${SINCE}" HEAD`,
   (line) => line.trim().split('\t', 2)[1]
 );
 
 // Get all approving reviewers of landed commits during the time period.
 const approvingReviewers = await runGitCommand(
-  `git log --since="${SINCE}" | egrep "^    Reviewed-By: "`,
+  `git log --max-count="${SINCE}" | egrep "^    Reviewed-By: "`,
   (line) => /^    Reviewed-By: ([^<]+)/.exec(line)[1].trim()
 );
 
@@ -78,10 +78,11 @@ async function retrieveCollaboratorsFromReadme() {
 // Get list of current collaborators from README.md.
 const collaborators = await retrieveCollaboratorsFromReadme();
 
-console.log(`${authors.size.toLocaleString()} authors have made commits since ${SINCE}.`);
-console.log(`${landers.size.toLocaleString()} landers have landed commits since ${SINCE}.`);
-console.log(`${approvingReviewers.size.toLocaleString()} reviewers have approved landed commits since ${SINCE}.`);
-console.log(`${collaborators.length.toLocaleString()} collaborators currently in the project.`);
+console.log(`In the last ${SINCE} commits:\n`);
+console.log(`* ${authors.size.toLocaleString()} authors have made commits.`);
+console.log(`* ${landers.size.toLocaleString()} landers have landed commits.`);
+console.log(`* ${approvingReviewers.size.toLocaleString()} reviewers have approved landed commits.`);
+console.log(`* ${collaborators.length.toLocaleString()} collaborators currently in the project.`);
 
 const inactive = collaborators.filter((collaborator) =>
   !authors.has(collaborator) &&
@@ -90,6 +91,6 @@ const inactive = collaborators.filter((collaborator) =>
 );
 
 if (inactive.length) {
-  console.log('\nInactive collaborators:');
-  console.log(inactive.join('\n'));
+  console.log('\nInactive collaborators:\n');
+  console.log(inactive.map((name) => `* ${name}`).join('\n'));
 }