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import os, signal, platform
from twisted.internet import reactor
from buildbot.scripts.logwatcher import LogWatcher, BuildmasterTimeoutError, \
ReconfigError
class Reconfigurator:
def run(self, config):
# Returns "Microsoft" for Vista and "Windows" for other versions
if platform.system() in ("Windows", "Microsoft"):
print "Reconfig (through SIGHUP) is not supported on Windows."
print "The 'buildbot debugclient' tool can trigger a reconfig"
print "remotely, but requires Gtk+ libraries to run."
return
basedir = config['basedir']
quiet = config['quiet']
os.chdir(basedir)
f = open("twistd.pid", "rt")
self.pid = int(f.read().strip())
if quiet:
os.kill(self.pid, signal.SIGHUP)
return
# keep reading twistd.log. Display all messages between "loading
# configuration from ..." and "configuration update complete" or
# "I will keep using the previous config file instead.", or until
# 10 seconds have elapsed.
self.sent_signal = False
lw = LogWatcher("twistd.log")
d = lw.start()
d.addCallbacks(self.success, self.failure)
reactor.callLater(0.2, self.sighup)
reactor.run()
def sighup(self):
if self.sent_signal:
return
print "sending SIGHUP to process %d" % self.pid
self.sent_signal = True
os.kill(self.pid, signal.SIGHUP)
def success(self, res):
print """
Reconfiguration appears to have completed successfully.
"""
reactor.stop()
def failure(self, why):
if why.check(BuildmasterTimeoutError):
print "Never saw reconfiguration finish."
elif why.check(ReconfigError):
print """
Reconfiguration failed. Please inspect the master.cfg file for errors,
correct them, then try 'buildbot reconfig' again.
"""
elif why.check(IOError):
# we were probably unable to open the file in the first place
self.sighup()
else:
print "Error while following twistd.log: %s" % why
reactor.stop()
def reconfig(config):
r = Reconfigurator()
r.run(config)
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