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ed37502 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 | """RunPod Pod-based generation provider.
Spins up a GPU pod with ComfyUI + FLUX.2 on demand, generates images,
then optionally shuts down. Simpler than serverless (no custom Docker needed).
The pod uses a pre-built ComfyUI image with FLUX.2 support.
"""
from __future__ import annotations
import asyncio
import logging
import time
from typing import Any
import httpx
import runpod
from content_engine.services.cloud_providers.base import CloudGenerationResult, CloudProvider
logger = logging.getLogger(__name__)
# Pre-built ComfyUI template with FLUX support
COMFYUI_TEMPLATE = "runpod/comfyui:flux" # RunPod's official ComfyUI + FLUX image
DOCKER_IMAGE = "ghcr.io/ai-dock/comfyui:v2-cuda-12.1.1-base"
# Default GPU for FLUX.2 (needs 24GB VRAM)
DEFAULT_GPU = "NVIDIA GeForce RTX 4090"
# ComfyUI API port
COMFYUI_PORT = 8188
class RunPodPodProvider(CloudProvider):
"""Generate images using an on-demand RunPod pod with ComfyUI."""
def __init__(self, api_key: str, auto_shutdown_minutes: int = 10):
self._api_key = api_key
runpod.api_key = api_key
self._auto_shutdown_minutes = auto_shutdown_minutes
self._pod_id: str | None = None
self._pod_ip: str | None = None
self._pod_port: int | None = None
self._last_activity: float = 0
self._http = httpx.AsyncClient(timeout=120)
self._shutdown_task: asyncio.Task | None = None
@property
def name(self) -> str:
return "runpod-pod"
async def _ensure_pod_running(self) -> tuple[str, int]:
"""Ensure a ComfyUI pod is running. Returns (ip, port)."""
self._last_activity = time.time()
# Check if existing pod is still running
if self._pod_id:
try:
pod = await asyncio.to_thread(runpod.get_pod, self._pod_id)
if pod and pod.get("desiredStatus") == "RUNNING":
runtime = pod.get("runtime", {})
ports = runtime.get("ports", [])
for p in ports:
if p.get("privatePort") == COMFYUI_PORT:
self._pod_ip = p.get("ip")
self._pod_port = p.get("publicPort")
if self._pod_ip and self._pod_port:
return self._pod_ip, self._pod_port
except Exception as e:
logger.warning("Failed to check pod status: %s", e)
self._pod_id = None
# Create new pod
logger.info("Starting ComfyUI pod with FLUX.2...")
pod = await asyncio.to_thread(
runpod.create_pod,
name="content-engine-comfyui",
image_name=DOCKER_IMAGE,
gpu_type_id=DEFAULT_GPU,
volume_in_gb=50,
container_disk_in_gb=20,
ports=f"{COMFYUI_PORT}/http",
env={
"PROVISIONING_SCRIPT": "https://raw.githubusercontent.com/ai-dock/comfyui/main/config/provisioning/flux.sh",
},
)
self._pod_id = pod["id"]
logger.info("Pod created: %s", self._pod_id)
# Wait for pod to be ready
ip, port = await self._wait_for_pod_ready()
self._pod_ip = ip
self._pod_port = port
# Wait for ComfyUI to be responsive
await self._wait_for_comfyui(ip, port)
# Schedule auto-shutdown
self._schedule_shutdown()
return ip, port
async def _wait_for_pod_ready(self, timeout: int = 300) -> tuple[str, int]:
"""Wait for pod to be running and return ComfyUI endpoint."""
start = time.time()
while time.time() - start < timeout:
try:
pod = await asyncio.to_thread(runpod.get_pod, self._pod_id)
if pod.get("desiredStatus") == "RUNNING":
runtime = pod.get("runtime", {})
ports = runtime.get("ports", [])
for p in ports:
if p.get("privatePort") == COMFYUI_PORT:
ip = p.get("ip")
port = p.get("publicPort")
if ip and port:
logger.info("Pod ready at %s:%s", ip, port)
return ip, int(port)
except Exception as e:
logger.debug("Waiting for pod: %s", e)
await asyncio.sleep(5)
raise TimeoutError(f"Pod did not become ready within {timeout}s")
async def _wait_for_comfyui(self, ip: str, port: int, timeout: int = 300):
"""Wait for ComfyUI API to be responsive."""
start = time.time()
url = f"http://{ip}:{port}/system_stats"
while time.time() - start < timeout:
try:
resp = await self._http.get(url)
if resp.status_code == 200:
logger.info("ComfyUI is ready!")
return
except Exception:
pass
await asyncio.sleep(5)
logger.info("Waiting for ComfyUI to start...")
raise TimeoutError("ComfyUI did not become ready")
def _schedule_shutdown(self):
"""Schedule auto-shutdown after idle period."""
if self._shutdown_task:
self._shutdown_task.cancel()
async def shutdown_if_idle():
while True:
await asyncio.sleep(60) # Check every minute
idle_time = time.time() - self._last_activity
if idle_time > self._auto_shutdown_minutes * 60:
logger.info("Auto-shutting down idle pod...")
await self.shutdown_pod()
break
self._shutdown_task = asyncio.create_task(shutdown_if_idle())
async def shutdown_pod(self):
"""Manually shut down the pod."""
if self._pod_id:
try:
await asyncio.to_thread(runpod.stop_pod, self._pod_id)
logger.info("Pod stopped: %s", self._pod_id)
except Exception as e:
logger.warning("Failed to stop pod: %s", e)
self._pod_id = None
self._pod_ip = None
self._pod_port = None
async def submit_generation(
self,
*,
positive_prompt: str,
negative_prompt: str = "",
checkpoint: str = "flux1-dev.safetensors",
lora_name: str | None = None,
lora_strength: float = 0.85,
seed: int = -1,
steps: int = 28,
cfg: float = 3.5,
width: int = 1024,
height: int = 1024,
) -> str:
"""Submit generation to ComfyUI on the pod."""
ip, port = await self._ensure_pod_running()
self._last_activity = time.time()
# Build ComfyUI workflow for FLUX
workflow = self._build_flux_workflow(
prompt=positive_prompt,
negative_prompt=negative_prompt,
width=width,
height=height,
steps=steps,
cfg=cfg,
seed=seed,
lora_name=lora_name,
lora_strength=lora_strength,
)
# Submit to ComfyUI
url = f"http://{ip}:{port}/prompt"
resp = await self._http.post(url, json={"prompt": workflow})
resp.raise_for_status()
data = resp.json()
prompt_id = data["prompt_id"]
logger.info("ComfyUI job submitted: %s", prompt_id)
return prompt_id
def _build_flux_workflow(
self,
prompt: str,
negative_prompt: str,
width: int,
height: int,
steps: int,
cfg: float,
seed: int,
lora_name: str | None,
lora_strength: float,
) -> dict:
"""Build a ComfyUI workflow for FLUX generation."""
import random
if seed < 0:
seed = random.randint(0, 2**32 - 1)
# Basic FLUX workflow
workflow = {
"3": {
"class_type": "CheckpointLoaderSimple",
"inputs": {"ckpt_name": "flux1-dev.safetensors"},
},
"6": {
"class_type": "CLIPTextEncode",
"inputs": {
"text": prompt,
"clip": ["3", 1],
},
},
"7": {
"class_type": "CLIPTextEncode",
"inputs": {
"text": negative_prompt or "",
"clip": ["3", 1],
},
},
"5": {
"class_type": "EmptyLatentImage",
"inputs": {
"width": width,
"height": height,
"batch_size": 1,
},
},
"10": {
"class_type": "KSampler",
"inputs": {
"seed": seed,
"steps": steps,
"cfg": cfg,
"sampler_name": "euler",
"scheduler": "simple",
"denoise": 1.0,
"model": ["3", 0],
"positive": ["6", 0],
"negative": ["7", 0],
"latent_image": ["5", 0],
},
},
"8": {
"class_type": "VAEDecode",
"inputs": {
"samples": ["10", 0],
"vae": ["3", 2],
},
},
"9": {
"class_type": "SaveImage",
"inputs": {
"filename_prefix": "flux_gen",
"images": ["8", 0],
},
},
}
# Add LoRA if specified
if lora_name:
workflow["4"] = {
"class_type": "LoraLoader",
"inputs": {
"lora_name": lora_name,
"strength_model": lora_strength,
"strength_clip": lora_strength,
"model": ["3", 0],
"clip": ["3", 1],
},
}
# Rewire sampler to use LoRA output
workflow["10"]["inputs"]["model"] = ["4", 0]
workflow["6"]["inputs"]["clip"] = ["4", 1]
workflow["7"]["inputs"]["clip"] = ["4", 1]
return workflow
async def check_status(self, job_id: str) -> str:
"""Check ComfyUI job status."""
if not self._pod_ip or not self._pod_port:
return "failed"
try:
url = f"http://{self._pod_ip}:{self._pod_port}/history/{job_id}"
resp = await self._http.get(url)
if resp.status_code == 200:
data = resp.json()
if job_id in data:
outputs = data[job_id].get("outputs", {})
if outputs:
return "completed"
status = data[job_id].get("status", {})
if status.get("completed"):
return "completed"
if status.get("status_str") == "error":
return "failed"
return "running"
return "pending"
except Exception as e:
logger.error("Status check failed: %s", e)
return "running"
async def get_result(self, job_id: str) -> CloudGenerationResult:
"""Get the generated image from ComfyUI."""
if not self._pod_ip or not self._pod_port:
raise RuntimeError("Pod not running")
# Get history to find output filename
url = f"http://{self._pod_ip}:{self._pod_port}/history/{job_id}"
resp = await self._http.get(url)
resp.raise_for_status()
data = resp.json()
job_data = data.get(job_id, {})
outputs = job_data.get("outputs", {})
# Find the SaveImage output
for node_id, node_output in outputs.items():
if "images" in node_output:
image_info = node_output["images"][0]
filename = image_info["filename"]
subfolder = image_info.get("subfolder", "")
# Download the image
img_url = f"http://{self._pod_ip}:{self._pod_port}/view"
params = {"filename": filename}
if subfolder:
params["subfolder"] = subfolder
img_resp = await self._http.get(img_url, params=params)
img_resp.raise_for_status()
return CloudGenerationResult(
job_id=job_id,
image_bytes=img_resp.content,
generation_time_seconds=0, # TODO: track actual time
)
raise RuntimeError(f"No image output found for job {job_id}")
async def wait_for_completion(
self,
job_id: str,
timeout: int = 300,
poll_interval: float = 2.0,
) -> CloudGenerationResult:
"""Wait for job completion."""
start = time.time()
while time.time() - start < timeout:
status = await self.check_status(job_id)
if status == "completed":
return await self.get_result(job_id)
elif status == "failed":
raise RuntimeError(f"ComfyUI job {job_id} failed")
await asyncio.sleep(poll_interval)
raise TimeoutError(f"Job {job_id} timed out after {timeout}s")
async def is_available(self) -> bool:
"""Check if RunPod API is accessible."""
return bool(self._api_key)
async def close(self):
"""Cleanup."""
if self._shutdown_task:
self._shutdown_task.cancel()
await self._http.aclose()
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