blakeblackshear.frigate/frigate/api/preview.py
Rui Alves cffc431bf0
Frigate HTTP API using FastAPI (#13871)
* POC: Added FastAPI with one endpoint (get /logs/service)

* POC: Revert error_log

* POC: Converted preview related endpoints to FastAPI

* POC: Converted two more endpoints to FastAPI

* POC: lint

* Convert all media endpoints to FastAPI. Added /media prefix (/media/camera && media/events && /media/preview)

* Convert all notifications API endpoints to FastAPI

* Convert first review API endpoints to FastAPI

* Convert remaining review API endpoints to FastAPI

* Convert export endpoints to FastAPI

* Fix path parameters

* Convert events endpoints to FastAPI

* Use body for multiple events endpoints

* Use body for multiple events endpoints (create and end event)

* Convert app endpoints to FastAPI

* Convert app endpoints to FastAPI

* Convert auth endpoints to FastAPI

* Removed flask app in favour of FastAPI app. Implemented FastAPI middleware to check CSRF, connect and disconnect from DB. Added middleware x-forwared-for headers

* Added starlette plugin to expose custom headers

* Use slowapi as the limiter

* Use query parameters for the frame latest endpoint

* Use query parameters for the media snapshot.jpg endpoint

* Use query parameters for the media MJPEG feed endpoint

* Revert initial nginx.conf change

* Added missing even_id for /events/search endpoint

* Removed left over comment

* Use FastAPI TestClient

* severity query parameter should be a string

* Use the same pattern for all tests

* Fix endpoint

* Revert media routers to old names. Order routes to make sure the dynamic ones from media.py are only used whenever there's no match on auth/etc

* Reverted paths for media on tsx files

* Deleted file

* Fix test_http to use TestClient

* Formatting

* Bind timeline to DB

* Fix http tests

* Replace filename with pathvalidate

* Fix latest.ext handling and disable uvicorn access logs

* Add cosntraints to api provided values

* Formatting

* Remove unused

* Remove unused

* Get rate limiter working

---------

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>
2024-09-24 07:05:30 -06:00

114 lines
3.3 KiB
Python

"""Preview apis."""
import logging
import os
from datetime import datetime, timedelta, timezone
import pytz
from fastapi import APIRouter
from fastapi.responses import JSONResponse
from frigate.api.defs.tags import Tags
from frigate.const import CACHE_DIR, PREVIEW_FRAME_TYPE
from frigate.models import Previews
logger = logging.getLogger(__name__)
router = APIRouter(tags=[Tags.preview])
@router.get("/preview/{camera_name}/start/{start_ts}/end/{end_ts}")
def preview_ts(camera_name: str, start_ts: float, end_ts: float):
"""Get all mp4 previews relevant for time period."""
if camera_name != "all":
camera_clause = Previews.camera == camera_name
else:
camera_clause = True
previews = (
Previews.select(
Previews.camera,
Previews.path,
Previews.duration,
Previews.start_time,
Previews.end_time,
)
.where(
Previews.start_time.between(start_ts, end_ts)
| Previews.end_time.between(start_ts, end_ts)
| ((start_ts > Previews.start_time) & (end_ts < Previews.end_time))
)
.where(camera_clause)
.order_by(Previews.start_time.asc())
.dicts()
.iterator()
)
clips = []
preview: Previews
for preview in previews:
clips.append(
{
"camera": preview["camera"],
"src": preview["path"].replace("/media/frigate", ""),
"type": "video/mp4",
"start": preview["start_time"],
"end": preview["end_time"],
}
)
if not clips:
return JSONResponse(
content={
"success": False,
"message": "No previews found.",
},
status_code=404,
)
return JSONResponse(content=clips, status_code=200)
@router.get("/preview/{year_month}/{day}/{hour}/{camera_name}/{tz_name}")
def preview_hour(year_month: str, day: int, hour: int, camera_name: str, tz_name: str):
"""Get all mp4 previews relevant for time period given the timezone"""
parts = year_month.split("-")
start_date = (
datetime(int(parts[0]), int(parts[1]), int(day), int(hour), tzinfo=timezone.utc)
- datetime.now(pytz.timezone(tz_name.replace(",", "/"))).utcoffset()
)
end_date = start_date + timedelta(hours=1) - timedelta(milliseconds=1)
start_ts = start_date.timestamp()
end_ts = end_date.timestamp()
return preview_ts(camera_name, start_ts, end_ts)
@router.get("/preview/{camera_name}/start/{start_ts}/end/{end_ts}/frames")
def get_preview_frames_from_cache(camera_name: str, start_ts: float, end_ts: float):
"""Get list of cached preview frames"""
preview_dir = os.path.join(CACHE_DIR, "preview_frames")
file_start = f"preview_{camera_name}"
start_file = f"{file_start}-{start_ts}.{PREVIEW_FRAME_TYPE}"
end_file = f"{file_start}-{end_ts}.{PREVIEW_FRAME_TYPE}"
selected_previews = []
for file in sorted(os.listdir(preview_dir)):
if not file.startswith(file_start):
continue
if file < start_file:
continue
if file > end_file:
break
selected_previews.append(file)
return JSONResponse(
content=selected_previews,
status_code=200,
)