~launchpad-pqm/launchpad/devel

# Copyright 2009 Canonical Ltd.  This software is licensed under the

# GNU Affero General Public License version 3 (see the file LICENSE).

# Twisted Application Configuration file.

# Use with "twistd2.4 -y <file.tac>", e.g. "twistd -noy server.tac"

import os

import signal

from meliae import scanner

from twisted.application import service, strports

from twisted.internet import reactor

from twisted.python import log

from twisted.web import server

from canonical.config import config, dbconfig

from canonical.launchpad.daemons import readyservice

from canonical.launchpad.scripts import execute_zcml_for_scripts

from canonical.librarian.interfaces import DUMP_FILE, SIGDUMPMEM

from canonical.librarian.libraryprotocol import FileUploadFactory

from canonical.librarian import storage, db

from canonical.librarian import web as fatweb

from lp.services.twistedsupport.loggingsupport import set_up_oops_reporting

# Connect to database

dbconfig.override(

    dbuser=config.librarian.dbuser,

    isolation_level=config.librarian.isolation_level)

execute_zcml_for_scripts()

if os.environ.get('LP_TEST_INSTANCE'):

    # Running in ephemeral mode: get the root dir from the environment and

    # dynamically allocate ports.

    path = os.environ['LP_LIBRARIAN_ROOT']

else:

    path = config.librarian_server.root

if config.librarian_server.upstream_host:

    upstreamHost = config.librarian_server.upstream_host

    upstreamPort = config.librarian_server.upstream_port

    reactor.addSystemEventTrigger(

        'before', 'startup', log.msg,

        'Using upstream librarian http://%s:%d' %

        (upstreamHost, upstreamPort))

else:

    upstreamHost = upstreamPort = None

    reactor.addSystemEventTrigger(

        'before', 'startup', log.msg, 'Not using upstream librarian')

application = service.Application('Librarian')

librarianService = service.IServiceCollection(application)

# Service that announces when the daemon is ready

readyservice.ReadyService().setServiceParent(librarianService)

def setUpListener(uploadPort, webPort, restricted):

    """Set up a librarian listener on the given ports.

    :param restricted: Should this be a restricted listener?  A restricted

        listener will serve only files with the 'restricted' file set and all

        files uploaded through the restricted listener will have that flag

        set.

    """

    librarian_storage = storage.LibrarianStorage(

        path, db.Library(restricted=restricted))

    upload_factory = FileUploadFactory(librarian_storage)

    strports.service("tcp:%d" % uploadPort, upload_factory).setServiceParent(

        librarianService)

    root = fatweb.LibraryFileResource(

        librarian_storage, upstreamHost, upstreamPort)

    root.putChild('search', fatweb.DigestSearchResource(librarian_storage))

    root.putChild('robots.txt', fatweb.robotsTxt)

    site = server.Site(root)

    site.displayTracebacks = False

    strports.service("tcp:%d" % webPort, site).setServiceParent(

        librarianService)

if os.environ.get('LP_TEST_INSTANCE'):

    # Running in ephemeral mode: allocate ports on demand.

    setUpListener(0, 0, restricted=False)

    setUpListener(0, 0, restricted=True)

else:

    # Set up the public librarian.

    uploadPort = config.librarian.upload_port

    webPort = config.librarian.download_port

    setUpListener(uploadPort, webPort, restricted=False)

    # Set up the restricted librarian.

    webPort = config.librarian.restricted_download_port

    uploadPort = config.librarian.restricted_upload_port

    setUpListener(uploadPort, webPort, restricted=True)

# Log OOPS reports

set_up_oops_reporting('librarian', 'librarian')

# Setup a signal handler to dump the process' memory upon 'kill -44'.

def sigdumpmem_handler(signum, frame):

    scanner.dump_all_objects(DUMP_FILE)

signal.signal(SIGDUMPMEM, sigdumpmem_handler)