feat(subs): kick off the first backfill walk immediately on source create

A new enabled source is armed for run-until-done backfill (#693) but would sit idle until the next scheduler tick (~60s). create_source now enqueues the first walk right away (pending DownloadEvent + download_source.delay), skipping only when the platform is in a rate-limit cooldown (the scheduler picks it up when that clears). Disabled sources still don't dispatch. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-06 21:22:32 -04:00
parent 87c7318125
commit a3c9499e93
2 changed files with 49 additions and 0 deletions
@@ -85,6 +85,22 @@ async def create_source():
            return _bad("empty_url", detail=str(exc))
        except DuplicateSourceError as exc:
            return _bad("duplicate", status=409, existing_id=exc.existing_id)
+
+        # Immediate kickoff: a new enabled source is armed for backfill (#693)
+        # but would otherwise sit idle until the next scheduler tick (~60s).
+        # Enqueue the first walk now, skipping only if the platform is in a
+        # rate-limit cooldown (the scheduler picks it up when that clears).
+        dispatch_id = None
+        if record.enabled:
+            cooldowns = await active_platform_cooldowns(session)
+            if record.platform not in cooldowns:
+                session.add(DownloadEvent(source_id=record.id, status="pending"))
+                await session.commit()
+                dispatch_id = record.id
+
+    if dispatch_id is not None:
+        from ..tasks.download import download_source
+        download_source.delay(dispatch_id)
    return jsonify(record.to_dict()), 201