Track running Granthi review queue jobs

src/lib/db.js

@@ -35,6 +35,7 @@ const DDL = [
     state TEXT NOT NULL DEFAULT 'queued',
     outcome TEXT,
     created_ts TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ','now')),
+    started_ts TEXT,
     finished_ts TEXT
   )`,
   `CREATE INDEX IF NOT EXISTS idx_queue_jobs_state ON queue_jobs(state)`
@@ -44,9 +45,17 @@ export function openDb(dbPath) {
   mkdirSync(dirname(dbPath), { recursive: true });
   const db = new DatabaseSync(dbPath);
   for (const stmt of DDL) db.prepare(stmt).run();
+  ensureColumn(db, 'queue_jobs', 'started_ts', 'TEXT');
   return db;
 }
 
+function ensureColumn(db, table, column, type) {
+  const columns = db.prepare(`PRAGMA table_info(${table})`).all();
+  if (!columns.some((c) => c.name === column)) {
+    db.prepare(`ALTER TABLE ${table} ADD COLUMN ${column} ${type}`).run();
+  }
+}
+
 export function insertReview(db, r) {
   const stmt = db.prepare(`
     INSERT INTO reviews (repo, sha, pr, event, pusher, authors, trailers, axes,
@@ -76,6 +85,13 @@ export function enqueueJob(db, job) {
   return res.lastInsertRowid;
 }
 
+export function startJob(db, id) {
+  db.prepare(
+    `UPDATE queue_jobs SET state = 'running',
+       started_ts = strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id = ?`
+  ).run(id);
+}
+
 export function finishJob(db, id, outcome = null) {
   db.prepare(
     `UPDATE queue_jobs SET state = 'done', outcome = ?,