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  from __future__ import with_statement 
17   
18   
19  import os 
20  import signal 
21  import platform 
22  from twisted.internet import reactor 
23   
24  from buildbot.scripts.logwatcher import LogWatcher, BuildmasterTimeoutError, \ 
25       ReconfigError 
26  from buildbot.util import in_reactor 
27   
28 -class Reconfigurator: 
29   
30      rc = 0 
31   
32 -    def run(self, basedir, quiet): 
33          # Returns "Microsoft" for Vista and "Windows" for other versions 
34          if platform.system() in ("Windows", "Microsoft"): 
35              print "Reconfig (through SIGHUP) is not supported on Windows." 
36              print "The 'buildbot debugclient' tool can trigger a reconfig" 
37              print "remotely, but requires Gtk+ libraries to run." 
38              return 
39   
40          with open(os.path.join(basedir, "twistd.pid"), "rt") as f: 
41              self.pid = int(f.read().strip()) 
42          if quiet: 
43              os.kill(self.pid, signal.SIGHUP) 
44              return 
45   
46          # keep reading twistd.log. Display all messages between "loading 
47          # configuration from ..." and "configuration update complete" or 
48          # "I will keep using the previous config file instead.", or until 
49          # 10 seconds have elapsed. 
50   
51          self.sent_signal = False 
52          reactor.callLater(0.2, self.sighup) 
53   
54          lw = LogWatcher(os.path.join(basedir, "twistd.log")) 
55          d = lw.start() 
56          d.addCallbacks(self.success, self.failure) 
57          d.addBoth(lambda _ : self.rc) 
58          return d 
59   
60 -    def sighup(self): 
61          if self.sent_signal: 
62              return 
63          print "sending SIGHUP to process %d" % self.pid 
64          self.sent_signal = True 
65          os.kill(self.pid, signal.SIGHUP) 
66   
67 -    def success(self, res): 
68          print """ 
69  Reconfiguration appears to have completed successfully. 
70  """ 
71   
72 -    def failure(self, why): 
73          self.rc = 1 
74          if why.check(BuildmasterTimeoutError): 
75              print "Never saw reconfiguration finish." 
76          elif why.check(ReconfigError): 
77              print """ 
78  Reconfiguration failed. Please inspect the master.cfg file for errors, 
79  correct them, then try 'buildbot reconfig' again. 
80  """ 
81          elif why.check(IOError): 
82              # we were probably unable to open the file in the first place 
83              self.sighup() 
84          else: 
85              print "Error while following twistd.log: %s" % why 
86   
87  @in_reactor 
88 -def reconfig(config): 
89      basedir = config['basedir'] 
90      quiet = config['quiet'] 
91      r = Reconfigurator() 
92      return r.run(basedir, quiet) 
93