From de24bae9842fa001355d49d615ec37e60b22b1d4 Mon Sep 17 00:00:00 2001
From: gahusb <bgg8988@gmail.com>
Date: Sat, 23 May 2026 12:06:24 +0900
Subject: [PATCH] feat(image-render): Redis BLPOP worker + 3 provider dispatch

---
 services/image-render/tests/test_worker.py | 15 ++++
 services/image-render/worker.py            | 84 ++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 services/image-render/tests/test_worker.py
 create mode 100644 services/image-render/worker.py

diff --git a/services/image-render/tests/test_worker.py b/services/image-render/tests/test_worker.py
new file mode 100644
index 0000000..879bb6c
--- /dev/null
+++ b/services/image-render/tests/test_worker.py
@@ -0,0 +1,15 @@
+import worker
+
+
+def test_dispatch_routes_to_provider(monkeypatch):
+    called = {}
+    monkeypatch.setattr(worker, "run_gpt_image_generation", lambda tid, p: called.setdefault("gpt", (tid, p)))
+    worker._dispatch({"job_type": "gpt_image_generation", "task_id": "t1", "params": {"prompt": "x"}})
+    assert called["gpt"][0] == "t1"
+
+
+def test_dispatch_unknown_job_type_reports_failed(monkeypatch):
+    calls = []
+    monkeypatch.setattr(worker, "webhook_update_task", lambda *a, **k: calls.append((a, k)))
+    worker._dispatch({"job_type": "midjourney_generation", "task_id": "t9", "params": {}})
+    assert calls[-1][0][1] == "failed"
diff --git a/services/image-render/worker.py b/services/image-render/worker.py
new file mode 100644
index 0000000..963a900
--- /dev/null
+++ b/services/image-render/worker.py
@@ -0,0 +1,84 @@
+"""Redis BLPOP worker — queue:image-render → job_type dispatch → NAS webhook.
+
+queue:paused 가 set이면 대기 (task-watcher가 박재오 활동 감지 시 set).
+video-render worker.py 패턴 — string-based dispatch + getattr (테스트 patch 호환).
+"""
+from __future__ import annotations
+
+import asyncio
+import json
+import logging
+import os
+import sys
+
+import redis.asyncio as aioredis
+
+from nas_client import webhook_update_task
+from providers.gpt_image import run_gpt_image_generation
+from providers.nano_banana import run_nano_banana_generation
+from providers.flux import run_flux_generation
+
+logger = logging.getLogger(__name__)
+
+REDIS_URL = os.getenv("REDIS_URL", "redis://192.168.45.54:6379")
+QUEUE_KEY = "queue:image-render"
+PAUSED_KEY = "queue:paused"
+
+# string names so `unittest.mock.patch` / `monkeypatch.setattr` on `worker.<name>`
+# is correctly intercepted by getattr(sys.modules[__name__], ...)
+_DISPATCH_TABLE = {
+    "gpt_image_generation":   "run_gpt_image_generation",
+    "nano_banana_generation": "run_nano_banana_generation",
+    "flux_generation":        "run_flux_generation",
+}
+
+
+def _dispatch(payload: dict) -> None:
+    """payload[job_type] → provider 함수 호출 (sync, worker_loop에서 asyncio.to_thread로 wrap)."""
+    job_type = payload.get("job_type", "")
+    task_id = payload.get("task_id", "")
+    params = payload.get("params", {})
+    fn_name = _DISPATCH_TABLE.get(job_type)
+    if fn_name is None:
+        logger.error("unknown job_type=%s task=%s", job_type, task_id)
+        webhook_update_task(task_id, "failed", 0, "", error=f"unknown job_type: {job_type}")
+        return
+    try:
+        fn = getattr(sys.modules[__name__], fn_name)
+    except AttributeError:
+        logger.error("dispatch table typo for job_type=%s name=%s task=%s", job_type, fn_name, task_id)
+        webhook_update_task(task_id, "failed", 0, "", error=f"internal dispatch error: {fn_name}")
+        return
+    fn(task_id, params)
+
+
+async def worker_loop():
+    redis = aioredis.from_url(REDIS_URL, decode_responses=False)
+    logger.info("image-render worker started (queue=%s)", QUEUE_KEY)
+    while True:
+        try:
+            paused = await redis.get(PAUSED_KEY)
+            if paused == b"1":
+                await asyncio.sleep(10)
+                continue
+            item = await redis.blpop(QUEUE_KEY, timeout=5)
+            if item is None:
+                continue
+            _, raw = item
+            try:
+                payload = json.loads(raw)
+            except json.JSONDecodeError:
+                logger.error("invalid queue payload: %r", raw[:200])
+                continue
+            await asyncio.to_thread(_dispatch, payload)
+        except asyncio.CancelledError:
+            logger.info("worker_loop cancelled")
+            raise
+        except Exception:
+            logger.exception("worker_loop iteration 실패, 5초 후 재시도")
+            await asyncio.sleep(5)
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
+    asyncio.run(worker_loop())