Source Code for Module buildbot.scripts.reconfig

 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, signal, platform 
18  from twisted.internet import reactor 
19   
20  from buildbot.scripts.logwatcher import LogWatcher, BuildmasterTimeoutError, \ 
21       ReconfigError 
22   
23 -class Reconfigurator: 
24 -    def run(self, config): 
25          # Returns "Microsoft" for Vista and "Windows" for other versions 
26          if platform.system() in ("Windows", "Microsoft"): 
27              print "Reconfig (through SIGHUP) is not supported on Windows." 
28              print "The 'buildbot debugclient' tool can trigger a reconfig" 
29              print "remotely, but requires Gtk+ libraries to run." 
30              return 
31   
32          basedir = config['basedir'] 
33          quiet = config['quiet'] 
34          os.chdir(basedir) 
35          f = open("twistd.pid", "rt") 
36          self.pid = int(f.read().strip()) 
37          if quiet: 
38              os.kill(self.pid, signal.SIGHUP) 
39              return 
40   
41          # keep reading twistd.log. Display all messages between "loading 
42          # configuration from ..." and "configuration update complete" or 
43          # "I will keep using the previous config file instead.", or until 
44          # 10 seconds have elapsed. 
45   
46          self.sent_signal = False 
47          lw = LogWatcher("twistd.log") 
48          d = lw.start() 
49          d.addCallbacks(self.success, self.failure) 
50          reactor.callLater(0.2, self.sighup) 
51          reactor.run() 
52   
53 -    def sighup(self): 
54          if self.sent_signal: 
55              return 
56          print "sending SIGHUP to process %d" % self.pid 
57          self.sent_signal = True 
58          os.kill(self.pid, signal.SIGHUP) 
59   
60 -    def success(self, res): 
61          print """ 
62  Reconfiguration appears to have completed successfully. 
63  """ 
64          reactor.stop() 
65   
66 -    def failure(self, why): 
67          if why.check(BuildmasterTimeoutError): 
68              print "Never saw reconfiguration finish." 
69          elif why.check(ReconfigError): 
70              print """ 
71  Reconfiguration failed. Please inspect the master.cfg file for errors, 
72  correct them, then try 'buildbot reconfig' again. 
73  """ 
74          elif why.check(IOError): 
75              # we were probably unable to open the file in the first place 
76              self.sighup() 
77          else: 
78              print "Error while following twistd.log: %s" % why 
79          reactor.stop() 
80   
81 -def reconfig(config): 
82      r = Reconfigurator() 
83      r.run(config) 
84