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import concurrent.futures
import hashlib
import hmac
import http.client
import json
import mimetypes
import shutil
import threading
import time
import urllib.request
from urllib.parse import urlparse
from dataclasses import asdict
from pathlib import Path
from typing import Callable
from renderer.core.config import Settings
from renderer.core.models import AIReelsRequest, JobRecord, RenderRequest
from renderer.core.render_engine import RenderEngine
from renderer.core.security import create_download_token
from renderer.core.utils import new_id, now, read_json, write_json
class JobManager:
def __init__(self, settings: Settings | None = None) -> None:
self.settings = settings or Settings()
self.settings.ensure_dirs()
self.executor = concurrent.futures.ThreadPoolExecutor(max_workers=self.settings.max_workers)
self.lock = threading.Lock()
def submit_render(self, request: RenderRequest) -> str:
return self._submit(
lambda job_id, log: RenderEngine(self.settings, log=log).render(request, job_id),
callback_url=request.callback_url,
export_target=request.export_target,
metadata=request.metadata,
job_type="render",
)
def submit_ai_reels(self, request: AIReelsRequest) -> str:
return self._submit(
lambda job_id, log: RenderEngine(self.settings, log=log).ai_reels(request, job_id),
callback_url=request.callback_url,
export_target=request.export_target,
job_type="render",
)
def submit_task(
self,
handler: Callable[[str, Callable[[str], None]], object],
*,
callback_url: str | None = None,
export_target: str | None = None,
metadata: dict | None = None,
job_type: str = "task",
) -> str:
return self._submit(handler, callback_url=callback_url, export_target=export_target, metadata=metadata, job_type=job_type)
def submit_batch(self, requests: list[RenderRequest]) -> list[str]:
job_ids: list[str] = []
for request in requests:
job_ids.append(self.submit_render(request))
return job_ids
def get(self, job_id: str) -> JobRecord:
data = read_json(self._record_path(job_id), None)
if data is None:
raise KeyError(job_id)
return JobRecord(**data)
def cancel(self, job_id: str) -> JobRecord:
record = self.get(job_id)
if record.state == "PENDING":
self._update(job_id, state="CANCELLED", failure_reason="Cancelled before execution")
elif record.state == "RUNNING":
self._update(job_id, state="CANCEL_REQUESTED", failure_reason="Cancellation requested")
return self.get(job_id)
def cleanup(self, older_than_seconds: int | None = None) -> dict[str, int]:
cutoff = now() - (older_than_seconds or self.settings.job_retention_seconds)
removed_jobs = 0
removed_exports = 0
for path in self.settings.jobs_dir.glob("*.json"):
record = JobRecord(**read_json(path, {}))
if record.updated_at >= cutoff or record.state in {"PENDING", "RUNNING", "CANCEL_REQUESTED"}:
continue
if record.output_path:
output = Path(record.output_path)
if output.exists():
output.unlink()
removed_exports += 1
path.unlink(missing_ok=True)
removed_jobs += 1
uploads = self.settings.temp_dir / "uploads"
if uploads.exists():
shutil.rmtree(uploads, ignore_errors=True)
return {"removed_jobs": removed_jobs, "removed_exports": removed_exports}
def summary(self) -> dict:
records: list[JobRecord] = []
for path in self.settings.jobs_dir.glob("*.json"):
try:
records.append(JobRecord(**read_json(path, {})))
except Exception:
continue
state_counts: dict[str, int] = {}
for record in records:
state_counts[record.state] = state_counts.get(record.state, 0) + 1
active = [
{
"job_id": record.job_id,
"state": record.state,
"created_at": record.created_at,
"updated_at": record.updated_at,
"metrics": record.metrics,
}
for record in sorted(records, key=lambda item: item.updated_at, reverse=True)
if record.state in {"PENDING", "RUNNING", "CANCEL_REQUESTED"}
]
return {
"total_jobs": len(records),
"state_counts": state_counts,
"active_jobs": active,
"max_workers": self.settings.max_workers,
}
def group(self, group_id: str) -> list[JobRecord]:
records: list[JobRecord] = []
for path in self.settings.jobs_dir.glob("*.json"):
try:
record = JobRecord(**read_json(path, {}))
except Exception:
continue
if record.metadata.get("group_id") == group_id:
records.append(record)
return sorted(records, key=lambda item: item.created_at)
def _submit(
self,
handler: Callable[[str, Callable[[str], None]], object],
callback_url: str | None = None,
export_target: str | None = None,
metadata: dict | None = None,
job_type: str = "task",
) -> str:
job_id = new_id()
record = JobRecord(
job_id=job_id,
state="PENDING",
created_at=now(),
updated_at=now(),
job_type=job_type,
download_token=create_download_token(self.settings.signing_secret, job_id),
callback_url=callback_url,
export_target=export_target,
metadata=metadata or {},
)
self._save(record)
self.executor.submit(self._run_with_retries, job_id, handler)
return job_id
def _run_with_retries(self, job_id: str, handler: Callable[[str, Callable[[str], None]], object]) -> None:
attempts = 0
max_attempts = max(1, self.settings.max_retries)
while attempts < max_attempts:
attempts += 1
if self.get(job_id).state == "CANCELLED":
self._send_callback(job_id)
return
self._update(job_id, state="RUNNING", metrics={"attempt": attempts})
try:
if self.get(job_id).state == "CANCEL_REQUESTED":
self._update(job_id, state="CANCELLED", failure_reason="Cancelled before render started")
self._send_callback(job_id)
return
result = handler(job_id, lambda message: self.append_log(job_id, message))
record = self.get(job_id)
output_path = getattr(result, "output_path", None)
export_path = self._export_copy(output_path, record.export_target, job_id) if output_path else None
result_metrics = getattr(result, "metrics", {}) or {}
if output_path:
result_metrics = result_metrics | {"artifact": _artifact_metadata(Path(output_path))}
self._update(
job_id,
state="COMPLETED",
output_path=str(output_path) if output_path else None,
export_path=export_path,
commands=getattr(result, "commands", []),
logs=getattr(result, "logs", []),
metrics=result_metrics | {"attempt": attempts},
)
self._send_callback(job_id)
return
except Exception as exc:
self.append_log(job_id, f"Attempt {attempts} failed: {exc}")
if attempts >= max_attempts:
self._update(job_id, state="FAILED", failure_reason=str(exc), metrics={"attempt": attempts})
self._send_callback(job_id)
def append_log(self, job_id: str, message: str) -> None:
with self.lock:
record = self.get(job_id)
record.logs.append(message)
record.updated_at = now()
self._save(record)
def _update(self, job_id: str, **changes) -> None:
with self.lock:
record = self.get(job_id)
for key, value in changes.items():
if key == "metrics" and record.metrics and isinstance(value, dict):
record.metrics.update(value)
else:
setattr(record, key, value)
record.updated_at = now()
self._save(record)
def _record_path(self, job_id: str) -> Path:
return self.settings.jobs_dir / f"{job_id}.json"
def _save(self, record: JobRecord) -> None:
write_json(self._record_path(record.job_id), asdict(record))
def _export_copy(self, output_path: Path, export_target: str | None, job_id: str) -> str | None:
if not export_target:
return None
if export_target != "local":
if export_target.startswith(("http://", "https://")):
_put_file(export_target, output_path)
return export_target
return None
target_dir = self.settings.storage_dir / job_id
target_dir.mkdir(parents=True, exist_ok=True)
target = target_dir / output_path.name
shutil.copy2(output_path, target)
return str(target)
def _send_callback(self, job_id: str) -> None:
try:
record = self.get(job_id)
except KeyError:
return
if not record.callback_url:
return
event = _event_name(record.job_type, record.state)
data = asdict(record)
data.update(
{
"event": event,
"event_id": f"{job_id}:{record.state.lower()}:{int(record.updated_at)}",
"occurred_at": record.updated_at,
"status_url": self._public_url(f"/status/{job_id}"),
"download_url": self._public_url(f"/download/{job_id}?token={record.download_token}"),
}
)
payload = json.dumps(data, default=str).encode("utf-8")
signature = hmac.new(self.settings.signing_secret.encode("utf-8"), payload, hashlib.sha256).hexdigest()
attempts = max(1, self.settings.callback_max_retries)
last_error: str | None = None
for attempt in range(1, attempts + 1):
request = urllib.request.Request(
record.callback_url,
data=payload,
headers={
"Content-Type": "application/json",
"User-Agent": "ava2lon-studio-callback/2.0",
"X-Ava2lon-Event": event,
"X-Ava2lon-Signature": f"sha256={signature}",
},
method="POST",
)
try:
with urllib.request.urlopen(request, timeout=10) as response:
response.read()
if response.status >= 400:
raise RuntimeError(f"HTTP {response.status}")
self._update(
job_id,
callback_attempts=attempt,
callback_delivered_at=now(),
callback_last_error=None,
)
return
except Exception as exc:
last_error = str(exc)
self._update(job_id, callback_attempts=attempt, callback_last_error=last_error)
if attempt < attempts:
time.sleep(max(0.0, self.settings.callback_retry_seconds) * (2 ** (attempt - 1)))
self.append_log(job_id, f"Callback delivery failed after {attempts} attempts: {last_error}")
def _public_url(self, path: str) -> str:
return f"{self.settings.public_base_url}{path}" if self.settings.public_base_url else path
def _put_file(url: str, path: Path) -> None:
parsed = urlparse(url)
connection_cls = http.client.HTTPSConnection if parsed.scheme == "https" else http.client.HTTPConnection
connection = connection_cls(parsed.netloc, timeout=60)
target = parsed.path or "/"
if parsed.query:
target += f"?{parsed.query}"
headers = {
"Content-Type": "video/mp4",
"Content-Length": str(path.stat().st_size),
"User-Agent": "ava2lon-studio-export/2.0",
}
connection.putrequest("PUT", target)
for key, value in headers.items():
connection.putheader(key, value)
connection.endheaders()
with path.open("rb") as source:
while True:
chunk = source.read(1024 * 1024)
if not chunk:
break
connection.send(chunk)
response = connection.getresponse()
body = response.read()
connection.close()
if response.status >= 400:
raise RuntimeError(f"Export upload failed with HTTP {response.status}: {body[:500]!r}")
def _event_name(job_type: str, state: str) -> str:
return f"{job_type}.{state.lower()}"
def _artifact_metadata(path: Path) -> dict:
digest = hashlib.sha256()
with path.open("rb") as source:
for chunk in iter(lambda: source.read(1024 * 1024), b""):
digest.update(chunk)
return {
"filename": path.name,
"size_bytes": path.stat().st_size,
"mime_type": mimetypes.guess_type(path.name)[0] or "application/octet-stream",
"sha256": digest.hexdigest(),
}
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