Coverage for master/buildbot/scripts/startup : 13%

# This file is part of Buildbot.  Buildbot is free software: you can 

# redistribute it and/or modify it under the terms of the GNU General Public 

# License as published by the Free Software Foundation, version 2. 

# 

# This program is distributed in the hope that it will be useful, but WITHOUT 

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 

# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more 

# details. 

# 

# You should have received a copy of the GNU General Public License along with 

# this program; if not, write to the Free Software Foundation, Inc., 51 

# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 

# 

# Copyright Buildbot Team Members 

import os, sys, time 

class Follower: 

    def follow(self): 

        from twisted.internet import reactor 

        from buildbot.scripts.logwatcher import LogWatcher 

        self.rc = 0 

        print "Following twistd.log until startup finished.." 

        lw = LogWatcher("twistd.log") 

        d = lw.start() 

        d.addCallbacks(self._success, self._failure) 

        reactor.run() 

        return self.rc 

    def _success(self, _): 

        from twisted.internet import reactor 

        print "The buildmaster appears to have (re)started correctly." 

        self.rc = 0 

        reactor.stop() 

    def _failure(self, why): 

        from twisted.internet import reactor 

        from buildbot.scripts.logwatcher import BuildmasterTimeoutError 

        from buildbot.scripts.logwatcher import ReconfigError 

        if why.check(BuildmasterTimeoutError): 

            print """ 

The buildmaster took more than 10 seconds to start, so we were unable to 

confirm that it started correctly. Please 'tail twistd.log' and look for a 

line that says 'configuration update complete' to verify correct startup. 

""" 

        elif why.check(ReconfigError): 

            print """ 

The buildmaster appears to have encountered an error in the master.cfg config 

file during startup. Please inspect and fix master.cfg, then restart the 

buildmaster. 

""" 

        else: 

            print """ 

Unable to confirm that the buildmaster started correctly. You may need to 

stop it, fix the config file, and restart. 

""" 

            print why 

        self.rc = 1 

        reactor.stop() 

def start(config): 

    os.chdir(config['basedir']) 

    if not os.path.exists("buildbot.tac"): 

        print "This doesn't look like a buildbot base directory:" 

        print "No buildbot.tac file." 

        print "Giving up!" 

        sys.exit(1) 

    if config['quiet']: 

        return launch(config) 

    # we probably can't do this os.fork under windows 

    from twisted.python.runtime import platformType 

    if platformType == "win32": 

        return launch(config) 

    # fork a child to launch the daemon, while the parent process tails the 

    # logfile 

    if os.fork(): 

        # this is the parent 

        rc = Follower().follow() 

        sys.exit(rc) 

    # this is the child: give the logfile-watching parent a chance to start 

    # watching it before we start the daemon 

    time.sleep(0.2) 

    launch(config) 

def launch(config): 

    sys.path.insert(0, os.path.abspath(os.getcwd())) 

    # see if we can launch the application without actually having to 

    # spawn twistd, since spawning processes correctly is a real hassle 

    # on windows. 

    argv = ["twistd", 

            "--no_save", 

            "--logfile=twistd.log", # windows doesn't use the same default 

            "--python=buildbot.tac"] 

    sys.argv = argv 

    # this is copied from bin/twistd. twisted-2.0.0 through 2.4.0 use 

    # _twistw.run . Twisted-2.5.0 and later use twistd.run, even for 

    # windows. 

    from twisted.scripts import twistd 

    twistd.run()