~launchpad-pqm/launchpad/devel

#! /usr/bin/env python2.4

##############################################################################

#

# Copyright (c) 2001, 2002 Zope Corporation and Contributors.

# All Rights Reserved.

#

# This software is subject to the provisions of the Zope Public License,

# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.

# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED

# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS

# FOR A PARTICULAR PURPOSE.

#

##############################################################################

"""Start script for Launchpad: loads configuration and starts the server.

$Id: z3.py 25266 2004-06-04 21:25:45Z jim $

"""

import sys

if sys.version_info < (2, 4, 0):

    print ("ERROR: Your python version is not supported by Launchpad."

            "Launchpad needs Python 2.4 or greater. You are running: " 

            + sys.version)

    sys.exit(1)

import os

import os.path

import atexit

import signal

import subprocess

import time

from zope.app.server.main import main

from configs import generate_overrides

basepath = filter(None, sys.path)

# Disgusting hack to use our extended config file schema rather than the

# Z3 one. TODO: Add command line options or other to Z3 to enable overriding

# this -- StuartBishop 20050406

from zdaemon.zdoptions import ZDOptions

ZDOptions.schemafile = os.path.abspath(os.path.join(

        os.path.dirname(__file__), 'lib', 'canonical',

        'config', 'schema.xml'))

def start_librarian():

    # Imported here as path is not set fully on module load

    from canonical.config import config

    from canonical.pidfile import make_pidfile, pidfile_path

    # Don't run the Librarian if it wasn't asked for. We only want it

    # started up developer boxes really, as the production Librarian

    # doesn't use this startup script.

    if not config.librarian.server.launch:

        return

    if not os.path.isdir(config.librarian.server.root):

        os.makedirs(config.librarian.server.root, 0700)

    pidfile = pidfile_path('librarian')

    logfile = config.librarian.server.logfile

    tacfile = os.path.abspath(os.path.join(

        os.path.dirname(__file__), 'daemons', 'librarian.tac'

        ))

    ver = '%d.%d' % sys.version_info[:2]

    args = [

        "twistd%s" % ver,

        "--no_save",

        "--nodaemon",

        "--python", tacfile,

        "--pidfile", pidfile,

        "--prefix", "Librarian",

        "--logfile", logfile,

        ]

    if config.librarian.server.spew:

        args.append("--spew")

    # Note that startup tracebacks and evil programmers using 'print'

    # will cause output to our stdout. However, we don't want to have

    # twisted log to stdout and redirect it ourselves because we then

    # lose the ability to cycle the log files by sending a signal to the

    # twisted process.

    librarian_process = subprocess.Popen(args, stdin=subprocess.PIPE)

    librarian_process.stdin.close()

    # I've left this off - we still check at termination and we can

    # avoid the startup delay. -- StuartBishop 20050525

    #time.sleep(1)

    #if librarian_process.poll() != None:

    #    raise RuntimeError(

    #            "Librarian did not start: %d" % librarian_process.returncode

    #            )

    def stop_librarian():

        if librarian_process.poll() is None:

            os.kill(librarian_process.pid, signal.SIGTERM)

            librarian_process.wait()

    atexit.register(stop_librarian)

def start_buildsequencer():

    # Imported here as path is not set fully on module load

    from canonical.config import config

    from canonical.pidfile import make_pidfile, pidfile_path

    # Don't run the sequencer if it wasn't asked for. We only want it

    # started up developer boxes and dogfood really, as the production

    # sequencer doesn't use this startup script.

    if not config.buildsequencer.launch:

        return

    pidfile = pidfile_path('buildsequencer')

    logfile = config.buildsequencer.logfile

    tacfile = os.path.abspath(os.path.join(

        os.path.dirname(__file__), 'daemons', 'buildd-sequencer.tac'

        ))

    ver = '%d.%d' % sys.version_info[:2]

    args = [

        "twistd%s" % ver,

        "--no_save",

        "--nodaemon",

        "--python", tacfile,

        "--pidfile", pidfile,

        "--prefix", "Librarian",

        "--logfile", logfile,

        ]

    if config.buildsequencer.spew:

        args.append("--spew")

    # Note that startup tracebacks and evil programmers using 'print'

    # will cause output to our stdout. However, we don't want to have

    # twisted log to stdout and redirect it ourselves because we then

    # lose the ability to cycle the log files by sending a signal to the

    # twisted process.

    sequencer_process = subprocess.Popen(args, stdin=subprocess.PIPE)

    sequencer_process.stdin.close()

    # I've left this off - we still check at termination and we can

    # avoid the startup delay. -- StuartBishop 20050525

    #time.sleep(1)

    #if sequencer_process.poll() != None:

    #    raise RuntimeError(

    #            "Sequencer did not start: %d" % sequencer_process.returncode

    #            )

    def stop_sequencer():

        if sequencer_process.poll() is None:

            os.kill(sequencer_process.pid, signal.SIGTERM)

            sequencer_process.wait()

    atexit.register(stop_sequencer)

def run(argv=list(sys.argv)):

    # Sort ZCML overrides for our current config

    generate_overrides()

    # setting python paths

    program = argv[0]

    src = 'lib'

    here = os.path.dirname(os.path.abspath(program))

    srcdir = os.path.join(here, src)

    sys.path = [srcdir, here] + basepath

    # Import canonical modules here, after path munging

    from canonical.pidfile import make_pidfile, pidfile_path

    # We really want to replace this with a generic startup harness.

    # However, this should last us until this is developed

    start_librarian()

    start_buildsequencer()

    # Store our process id somewhere

    make_pidfile('launchpad')

    main(argv[1:])

if __name__ == '__main__':

    run()