258 lines
8.5 KiB
Python
258 lines
8.5 KiB
Python
import os
|
|
import logging
|
|
import cherrypy
|
|
import shutil
|
|
import tempfile
|
|
import traceback
|
|
import requests
|
|
from threading import Thread
|
|
from contextlib import closing
|
|
from queue import Queue, Empty
|
|
from shutil import copyfileobj
|
|
from subprocess import check_call
|
|
from photoapp.dbutils import SAEnginePlugin, SATool, db, get_db_engine, create_db_sessionmaker
|
|
from photoapp.storage import uri_to_storage
|
|
from photoapp.api import PhotosApi, LibraryManager
|
|
from photoapp.types import User, Photo
|
|
from photoapp.utils import require_auth
|
|
from photoapp.common import pwhash
|
|
from photoapp.dbsession import DatabaseSession
|
|
from photoapp.thumb import thumb_path, image_file_style
|
|
|
|
|
|
def get_video_thumb(srcpath, outpath):
|
|
#TODO limit execution time
|
|
|
|
cmd = [
|
|
"ffmpeg",
|
|
"-i", srcpath,
|
|
"-vframes", "1", # Output one frame
|
|
"-an", # Disable audio
|
|
# "-s", "400x222" # Output size
|
|
"-ss", "1", # grab the frame from 1 second into the video
|
|
outpath
|
|
]
|
|
|
|
#TODO capture output and only log on error
|
|
check_call(cmd)
|
|
|
|
|
|
def setup_thumb_user(engine):
|
|
#TODO create the internal User used to talk to this service
|
|
# if user doesnt exist
|
|
# create
|
|
# log the password
|
|
pass
|
|
|
|
|
|
class ThumbWorker(Thread):
|
|
def __init__(self, engine, library, cache):
|
|
super().__init__()
|
|
self.daemon = True
|
|
|
|
self.queue = Queue()
|
|
self.engine = engine
|
|
self.library = library
|
|
self.cache = cache
|
|
|
|
def run(self):
|
|
logged_empty = False
|
|
while True:
|
|
try:
|
|
image_uuid, style_name = self.queue.get(block=True, timeout=5.0)
|
|
logged_empty = False
|
|
except Empty:
|
|
if not logged_empty:
|
|
logging.info("queue empty")
|
|
logged_empty = True
|
|
continue
|
|
|
|
try:
|
|
with (
|
|
closing(create_db_sessionmaker(self.engine)()) as s,
|
|
tempfile.TemporaryDirectory() as d,
|
|
):
|
|
self.do_thumb(image_uuid, style_name, s, d)
|
|
except:
|
|
traceback.print_exc() #TODO something like _failed_thumbs_cache
|
|
#TODO handle errors differently, like
|
|
# db error -> kill program
|
|
# filesystem error -> kill program
|
|
# PIL error -> ignore
|
|
|
|
def do_thumb(self, image_uuid, style_name, session, tmpdir):
|
|
"""
|
|
Generate a thumbnail for the given image identified by uuid
|
|
"""
|
|
|
|
# find the image
|
|
image = session.query(Photo).filter(Photo.uuid == image_uuid).first()
|
|
if not image:
|
|
logging.info("attempted invalid uuid: %s", image_uuid)
|
|
return
|
|
|
|
# Bail if it exists in storage already
|
|
cache_path = thumb_path(style_name, image_uuid)
|
|
if self.cache.exists(cache_path):
|
|
return
|
|
|
|
# download the image
|
|
local_src_path = os.path.join(tmpdir, image.fname) # TODO fname isn't sanitized?
|
|
thumb_tmp_path = os.path.join(tmpdir, "thumb.jpg")
|
|
with (
|
|
self.library.open(image.path, "rb") as src,
|
|
open(local_src_path, "wb") as dest,
|
|
):
|
|
shutil.copyfileobj(src, dest)
|
|
|
|
# generate a still from the image
|
|
get_video_thumb(local_src_path, thumb_tmp_path)
|
|
|
|
logging.info("generated %s: %sb", thumb_tmp_path, str(os.path.getsize(thumb_tmp_path)))
|
|
|
|
# Do normal cropping of the thumb
|
|
thumb_cropped_path = os.path.join(tmpdir, "thumb_cropped.jpg")
|
|
image_file_style(thumb_tmp_path, thumb_cropped_path, style_name, image.orientation)
|
|
|
|
# copy thumbnail to cache storage
|
|
with (
|
|
open(thumb_cropped_path, 'rb') as fsrc,
|
|
closing(self.cache.open(cache_path, 'wb')) as fdest
|
|
):
|
|
copyfileobj(fsrc, fdest)
|
|
|
|
|
|
class ThumbServiceWeb(object):
|
|
def __init__(self, queue_thumbnail):
|
|
self.queue_thumbnail = queue_thumbnail
|
|
|
|
@cherrypy.expose
|
|
def index(self):
|
|
yield "photoapp thumbnail service OK"
|
|
|
|
@cherrypy.expose
|
|
# @require_auth
|
|
def thumb(self, uuid, style):
|
|
"""
|
|
Generate a thumbnail for the file identified. Calling this endpoint adds the image to the queue. Duplicate
|
|
requests are OK and are ignored later
|
|
"""
|
|
self.queue_thumbnail((uuid, style, ))
|
|
yield "ok"
|
|
|
|
|
|
class ThumbClient(object):
|
|
"""
|
|
Client for interacting with the thumbserver api
|
|
"""
|
|
def __init__(self, server_url):
|
|
self.server_url = server_url
|
|
self.session = requests.Session()
|
|
a = requests.adapters.HTTPAdapter(max_retries=0)
|
|
self.session.mount('http://', a)
|
|
|
|
def request_thumb(self, photo_uuid, style_name):
|
|
self.session.get(self.server_url, params=dict(uuid=photo_uuid, style=style_name))
|
|
|
|
|
|
# TODO dedupe me
|
|
def validate_password(realm, username, password):
|
|
if db.query(User).filter(User.name == username, User.password == pwhash(password)).first():
|
|
return True
|
|
return False
|
|
|
|
|
|
def main():
|
|
# this is a slimmed down version of daemon.py TODO dedupe me
|
|
import argparse
|
|
import signal
|
|
|
|
parser = argparse.ArgumentParser(description="Photod photo server")
|
|
|
|
parser.add_argument('-p', '--port', help="tcp port to listen on",
|
|
default=int(os.environ.get("THUMB_SERVICE_PORT", 8081)), type=int)
|
|
parser.add_argument('-l', '--library', default=os.environ.get("STORAGE_URL"), help="library path")
|
|
parser.add_argument('-c', '--cache', default=os.environ.get("CACHE_URL"), help="cache url")
|
|
# https://docs.sqlalchemy.org/en/13/core/engines.html
|
|
parser.add_argument('-s', '--database', help="sqlalchemy database connection uri",
|
|
default=os.environ.get("DATABASE_URL")),
|
|
parser.add_argument('--debug', action="store_true", help="enable development options")
|
|
|
|
args = parser.parse_args()
|
|
|
|
if not args.database:
|
|
parser.error("--database or DATABASE_URL is required")
|
|
|
|
if not args.library:
|
|
parser.error("--library or STORAGE_URL is required")
|
|
|
|
if not args.cache:
|
|
parser.error("--cache or CACHE_URL is required")
|
|
|
|
logging.basicConfig(level=logging.INFO if args.debug else logging.WARNING,
|
|
format="%(asctime)-15s %(levelname)-8s %(filename)s:%(lineno)d %(message)s")
|
|
|
|
# Get database connection
|
|
engine = get_db_engine(args.database)
|
|
|
|
setup_thumb_user(engine)
|
|
|
|
# Setup database in web framework
|
|
cherrypy.tools.db = SATool()
|
|
SAEnginePlugin(cherrypy.engine, engine).subscribe()
|
|
|
|
# Create various internal tools
|
|
library_storage = uri_to_storage(args.library)
|
|
library_manager = LibraryManager(library_storage)
|
|
cache_storage = uri_to_storage(args.cache)
|
|
thumbnail_worker = ThumbWorker(engine, library_storage, cache_storage)
|
|
thumbnail_worker.start()
|
|
|
|
# Setup and mount web ui
|
|
web = ThumbServiceWeb(thumbnail_worker.queue.put)
|
|
cherrypy.tree.mount(web, '/', {'/': {'tools.trailing_slash.on': False,
|
|
'tools.db.on': True, }})
|
|
|
|
# Setup and mount API
|
|
api = PhotosApi(library_manager)
|
|
cherrypy.tree.mount(api, '/api', {'/': {'tools.sessions.on': False,
|
|
'tools.trailing_slash.on': False,
|
|
'tools.auth_basic.on': True,
|
|
'tools.auth_basic.realm': 'photolib',
|
|
'tools.auth_basic.checkpassword': validate_password,
|
|
'tools.db.on': True}})
|
|
|
|
# General config options
|
|
cherrypy.config.update({
|
|
'tools.sessions.storage_class': DatabaseSession,
|
|
'tools.sessions.on': True,
|
|
'tools.sessions.locking': 'explicit',
|
|
'tools.sessions.timeout': 525600,
|
|
'request.show_tracebacks': True,
|
|
'server.socket_port': args.port,
|
|
'server.thread_pool': 5,
|
|
'server.socket_host': '0.0.0.0',
|
|
'server.show_tracebacks': True,
|
|
'log.screen': False,
|
|
'engine.autoreload.on': args.debug,
|
|
})
|
|
|
|
# Setup signal handling and run it.
|
|
def signal_handler(signum, stack):
|
|
logging.critical('Got sig {}, exiting...'.format(signum))
|
|
cherrypy.engine.exit()
|
|
|
|
signal.signal(signal.SIGINT, signal_handler)
|
|
signal.signal(signal.SIGTERM, signal_handler)
|
|
|
|
try:
|
|
cherrypy.engine.start()
|
|
cherrypy.engine.block()
|
|
finally:
|
|
logging.info("API has shut down")
|
|
cherrypy.engine.exit()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|