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# Copyright (c) 2017–2018 crocoite contributors
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""
Celery distributed tasks
"""
import os
from urllib.parse import urlsplit
from datetime import datetime
from celery import Celery
from celery.utils.log import get_task_logger
from .controller import SinglePageController, ControllerSettings
from . import behavior
app = Celery ('crocoite.distributed')
app.config_from_object('celeryconfig')
logger = get_task_logger('crocoite.distributed.archive')
@app.task(bind=True, track_started=True)
def archive (self, url, settings, enabledBehaviorNames):
"""
Archive a single URL
Supports these config keys (celeryconfig):
warc_filename = '{domain}-{date}-{id}.warc.gz'
temp_dir = '/tmp/'
finished_dir = '/tmp/finished'
"""
parsedUrl = urlsplit (url)
outFile = app.conf.warc_filename.format (
id=self.request.id,
domain=parsedUrl.hostname.replace ('/', '-'),
date=datetime.utcnow ().isoformat (),
)
outPath = os.path.join (app.conf.temp_dir, outFile)
fd = open (outPath, 'wb')
enabledBehavior = list (filter (lambda x: x.name in enabledBehaviorNames, behavior.available))
settings = ControllerSettings (**settings)
controller = SinglePageController (url, fd, behavior=enabledBehavior, settings=settings)
ret = controller.run ()
os.makedirs (app.conf.finished_dir, exist_ok=True)
outPath = os.path.join (app.conf.finished_dir, outFile)
os.rename (fd.name, outPath)
return ret
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