Add Snacks app: automated video library encoder with hardware acceleration (#6)

Co-authored-by: Joachim Friberg <joachim.friberg@ip-solutions.se>
Reviewed-on: phirna/zima-apps#6

Apps/docker-ip-addr-manager/backend/app/main.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from pathlib import Path
+import threading
 
 from fastapi import FastAPI, HTTPException
 from fastapi.responses import FileResponse, JSONResponse
@@ -8,6 +9,7 @@ from fastapi.staticfiles import StaticFiles
 
 from app.config import get_settings
 from app.docker_api import DockerApiClient, DockerApiError, DockerUsageResolver
+from app.dns_sync import DnsSyncError, build_dns_provider
 from app.ip_commands import CommandError, IpAddressManager
 from app.service import (
     ConflictError,
@@ -25,11 +27,34 @@ def build_service() -> EntryService:
     docker_client = DockerApiClient(settings.docker_api_url, timeout_seconds=settings.docker_timeout_seconds)
     usage_resolver = DockerUsageResolver(docker_client)
     ip_manager = IpAddressManager()
-    return EntryService(storage=storage, usage_resolver=usage_resolver, ip_manager=ip_manager)
+    dns_provider = build_dns_provider(
+        settings.dns_provider,
+        adguard_url=settings.adguard_url,
+        adguard_username=settings.adguard_username,
+        adguard_password=settings.adguard_password,
+        rfc2136_server=settings.rfc2136_server,
+        rfc2136_zone=settings.rfc2136_zone,
+        rfc2136_port=settings.rfc2136_port,
+        rfc2136_tsig_key_name=settings.rfc2136_tsig_key_name,
+        rfc2136_tsig_secret=settings.rfc2136_tsig_secret,
+        rfc2136_tsig_algorithm=settings.rfc2136_tsig_algorithm,
+        timeout_seconds=settings.docker_timeout_seconds,
+    )
+    return EntryService(
+        storage=storage,
+        usage_resolver=usage_resolver,
+        ip_manager=ip_manager,
+        dns_provider=dns_provider,
+        dns_base_domain=settings.dns_base_domain,
+        dns_ttl_seconds=settings.dns_ttl_seconds,
+    )
 
 
 service = build_service()
 app = FastAPI(title="Docker IP Addr Manager", version="0.1.0")
+settings = get_settings()
+stop_event = threading.Event()
+background_thread: threading.Thread | None = None
 
 static_dir = Path(__file__).parent / "static"
 app.mount("/static", StaticFiles(directory=static_dir), name="static")
@@ -41,6 +66,39 @@ def startup_reconcile() -> None:
     if errors:
         for error in errors:
             print(f"[startup-reconcile] {error}")
+    dns_errors = service.reconcile_dns_records()
+    if dns_errors:
+        for error in dns_errors:
+            print(f"[dns-reconcile-startup] {error}")
+    _start_dns_background_loop()
+
+
+@app.on_event("shutdown")
+def shutdown_reconcile() -> None:
+    stop_event.set()
+    if background_thread and background_thread.is_alive():
+        background_thread.join(timeout=2.0)
+
+
+def _dns_background_worker(interval_seconds: float) -> None:
+    while not stop_event.wait(interval_seconds):
+        errors = service.reconcile_dns_records()
+        for error in errors:
+            print(f"[dns-reconcile] {error}")
+
+
+def _start_dns_background_loop() -> None:
+    global background_thread
+    if settings.dns_provider.strip().lower() in {"", "none"}:
+        return
+    if background_thread and background_thread.is_alive():
+        return
+    background_thread = threading.Thread(
+        target=_dns_background_worker,
+        args=(max(settings.dns_sync_interval_seconds, 1.0),),
+        daemon=True,
+    )
+    background_thread.start()
 
 
 @app.get("/")
@@ -139,3 +197,8 @@ def delete_entry(entry_id: str) -> dict:
 @app.exception_handler(DockerApiError)
 async def docker_error_handler(_, exc: DockerApiError):
     return JSONResponse(status_code=503, content={"detail": str(exc)})
+
+
+@app.exception_handler(DnsSyncError)
+async def dns_error_handler(_, exc: DnsSyncError):
+    return JSONResponse(status_code=503, content={"detail": str(exc)})