Source Code for Module buildbot.scripts.start

  1  # This file is part of Buildbot.  Buildbot is free software: you can 
  2  # redistribute it and/or modify it under the terms of the GNU General Public 
  3  # License as published by the Free Software Foundation, version 2. 
  4  # 
  5  # This program is distributed in the hope that it will be useful, but WITHOUT 
  6  # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
  7  # FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more 
  8  # details. 
  9  # 
 10  # You should have received a copy of the GNU General Public License along with 
 11  # this program; if not, write to the Free Software Foundation, Inc., 51 
 12  # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 
 13  # 
 14  # Copyright Buildbot Team Members 
 15   
 16   
 17  import os, sys 
 18  from buildbot.scripts import base 
 19  from twisted.internet import reactor, protocol 
 20  from twisted.python.runtime import platformType 
 21  from buildbot.scripts.logwatcher import LogWatcher 
 22  from buildbot.scripts.logwatcher import BuildmasterTimeoutError 
 23  from buildbot.scripts.logwatcher import ReconfigError 
 24   
 25 -class Follower: 
 26 -    def follow(self, basedir): 
 27          self.rc = 0 
 28          print "Following twistd.log until startup finished.." 
 29          lw = LogWatcher(os.path.join(basedir, "twistd.log")) 
 30          d = lw.start() 
 31          d.addCallbacks(self._success, self._failure) 
 32          reactor.run() 
 33          return self.rc 
 34   
 35 -    def _success(self, _): 
 36          print "The buildmaster appears to have (re)started correctly." 
 37          self.rc = 0 
 38          reactor.stop() 
 39   
 40 -    def _failure(self, why): 
 41          if why.check(BuildmasterTimeoutError): 
 42              print """ 
 43  The buildmaster took more than 10 seconds to start, so we were unable to 
 44  confirm that it started correctly. Please 'tail twistd.log' and look for a 
 45  line that says 'configuration update complete' to verify correct startup. 
 46  """ 
 47          elif why.check(ReconfigError): 
 48              print """ 
 49  The buildmaster appears to have encountered an error in the master.cfg config 
 50  file during startup. Please inspect and fix master.cfg, then restart the 
 51  buildmaster. 
 52  """ 
 53          else: 
 54              print """ 
 55  Unable to confirm that the buildmaster started correctly. You may need to 
 56  stop it, fix the config file, and restart. 
 57  """ 
 58              print why 
 59          self.rc = 1 
 60          reactor.stop() 
 61   
 62 -def launchNoDaemon(config): 
 63      os.chdir(config['basedir']) 
 64      sys.path.insert(0, os.path.abspath(config['basedir'])) 
 65   
 66      argv = ["twistd", 
 67              "--no_save", 
 68              '--nodaemon', 
 69              "--logfile=twistd.log", # windows doesn't use the same default 
 70              "--python=buildbot.tac"] 
 71      sys.argv = argv 
 72   
 73      # this is copied from bin/twistd. twisted-2.0.0 through 2.4.0 use 
 74      # _twistw.run . Twisted-2.5.0 and later use twistd.run, even for 
 75      # windows. 
 76      from twisted.scripts import twistd 
 77      twistd.run() 
 78   
 79 -def launch(config): 
 80      os.chdir(config['basedir']) 
 81      sys.path.insert(0, os.path.abspath(config['basedir'])) 
 82   
 83      # see if we can launch the application without actually having to 
 84      # spawn twistd, since spawning processes correctly is a real hassle 
 85      # on windows. 
 86      argv = [sys.executable, 
 87              "-c", 
 88              # this is copied from bin/twistd. twisted-2.0.0 through 2.4.0 use 
 89              # _twistw.run . Twisted-2.5.0 and later use twistd.run, even for 
 90              # windows. 
 91              "from twisted.scripts import twistd; twistd.run()", 
 92              "--no_save", 
 93              "--logfile=twistd.log", # windows doesn't use the same default 
 94              "--python=buildbot.tac"] 
 95   
 96      # ProcessProtocol just ignores all output 
 97      reactor.spawnProcess(protocol.ProcessProtocol(), sys.executable, argv, env=os.environ) 
 98   
 99 -def start(config): 
100      if not base.isBuildmasterDir(config['basedir']): 
101          print "not a buildmaster directory" 
102          return 1 
103   
104      if config['nodaemon']: 
105          launchNoDaemon(config) 
106          return 0 
107   
108      launch(config) 
109   
110      # We don't have tail on windows 
111      if platformType == "win32" or config['quiet']: 
112          return 0 
113   
114      # this is the parent 
115      rc = Follower().follow(config['basedir']) 
116      return rc 
117