Script updates.

2026-07-06 16:17:34 -07:00 · 2026-04-23 07:57:37 -07:00
parent 9109505145
commit 87485c87a4
8 changed files with 367 additions and 93 deletions
@@ -0,0 +1,124 @@
+import { execSync } from 'node:child_process';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const repoRoot = path.resolve(__dirname, '../../../../');
+
+try {
+  // 1. Fetch recent PR numbers and reviews from GitHub (so we have reviewer names/logins)
+  const query = `
+  query($owner: String!, $repo: String!) {
+    repository(owner: $owner, name: $repo) {
+      pullRequests(last: 100, states: MERGED) {
+        nodes {
+          number
+          reviews(first: 20) {
+            nodes {
+              authorAssociation
+              author { login, ... on User { name } }
+            }
+          }
+        }
+      }
+    }
+  }
+  `;
+  const output = execSync(`gh api graphql -F owner=google-gemini -F repo=gemini-cli -f query='${query}'`, { encoding: 'utf-8', stdio: ['ignore', 'pipe', 'ignore'] });
+  const data = JSON.parse(output).data.repository;
+
+  // 2. Map PR numbers to local commits using git log
+  const logOutput = execSync('git log -n 5000 --format="%H|%s"', { cwd: repoRoot, encoding: 'utf-8', stdio: ['ignore', 'pipe', 'ignore'] });
+  const prCommits = new Map();
+  for (const line of logOutput.split('\n')) {
+    if (!line) continue;
+    const [hash, subject] = line.split('|');
+    const match = subject.match(/\(#(\d+)\)$/);
+    if (match) {
+      prCommits.set(parseInt(match[1], 10), hash);
+    }
+  }
+
+  let totalMaintainerReviews = 0;
+  let maintainerReviewsWithExpertise = 0;
+
+  for (const pr of data.pullRequests.nodes) {
+    if (!pr.reviews?.nodes || pr.reviews.nodes.length === 0) continue;
+    
+    const commitHash = prCommits.get(pr.number);
+    if (!commitHash) continue; // Skip if we don't have the commit locally
+
+    // 3. Get exact files changed using local git diff-tree, bypassing GraphQL limits
+    const diffTreeOutput = execSync(`git diff-tree --no-commit-id --name-only -r ${commitHash}`, { cwd: repoRoot, encoding: 'utf-8', stdio: ['ignore', 'pipe', 'ignore'] });
+    const files = diffTreeOutput.split('\n').filter(Boolean);
+    if (files.length === 0) continue;
+
+    // Cache git log authors per path to avoid redundant child_process calls
+    const authorCache = new Map();
+    const getAuthors = (targetPath) => {
+      if (authorCache.has(targetPath)) return authorCache.get(targetPath);
+      try {
+        const authors = execSync(`git log --format="%an|%ae" -- "${targetPath}"`, { cwd: repoRoot, encoding: 'utf-8', stdio: ['ignore', 'pipe', 'ignore'] }).toLowerCase();
+        authorCache.set(targetPath, authors);
+        return authors;
+      } catch (e) {
+        authorCache.set(targetPath, "");
+        return "";
+      }
+    };
+
+    const reviewersOnPR = new Map();
+    for (const review of pr.reviews.nodes) {
+      if (['MEMBER', 'OWNER'].includes(review.authorAssociation) && review.author?.login) {
+        const login = review.author.login.toLowerCase();
+        if (login.endsWith('[bot]') || login.includes('bot')) continue;
+        reviewersOnPR.set(login, review.author);
+      }
+    }
+
+    for (const [login, authorInfo] of reviewersOnPR.entries()) {
+      totalMaintainerReviews++;
+      let hasExpertise = false;
+      const name = authorInfo.name ? authorInfo.name.toLowerCase() : "";
+
+      for (const file of files) {
+        // Precise check: immediate file
+        let authorsStr = getAuthors(file);
+        if (authorsStr.includes(login) || (name && authorsStr.includes(name))) {
+          hasExpertise = true;
+          break;
+        }
+
+        // Fallback: file's directory
+        const dir = path.dirname(file);
+        authorsStr = getAuthors(dir);
+        if (authorsStr.includes(login) || (name && authorsStr.includes(name))) {
+          hasExpertise = true;
+          break;
+        }
+      }
+      
+      if (hasExpertise) {
+        maintainerReviewsWithExpertise++;
+      }
+    }
+  }
+
+  const ratio = totalMaintainerReviews > 0 ? maintainerReviewsWithExpertise / totalMaintainerReviews : 0;
+  const timestamp = new Date().toISOString();
+
+  process.stdout.write(JSON.stringify({
+    metric: 'domain_expertise',
+    value: Math.round(ratio * 100) / 100,
+    timestamp,
+    details: {
+      totalMaintainerReviews,
+      maintainerReviewsWithExpertise
+    }
+  }) + '\n');
+
+} catch (err) {
+  process.stderr.write(err instanceof Error ? err.message : String(err));
+  process.exit(1);
+}