def do_status(self, arg):
if not self.ctl.upcheck():
return
supervisor = self.ctl.get_supervisor()
all_infos = supervisor.getAllProcessInfo()
names = arg.split()
if not names or "all" in names:
matching_infos = all_infos
else:
matching_infos = []
for name in names:
bad_name = True
group_name, process_name = split_namespec(name)
for info in all_infos:
matched = info['group'] == group_name
if process_name is not None:
matched = matched and info['name'] == process_name
if matched:
bad_name = False
matching_infos.append(info)
if bad_name:
if process_name is None:
msg = "%s: ERROR (no such group)" % group_name
else:
msg = "%s: ERROR (no such process)" % name
self.ctl.output(msg)
self._show_statuses(matching_infos)
def signalProcess(self, name, signal):
""" Send an arbitrary UNIX signal to the process named by name
@param string name Name of the process to signal (or 'group:name')
@param string signal Signal to send, as name ('HUP') or number ('1')
@return boolean
"""
self._update('signalProcess')
group, process = self._getGroupAndProcess(name)
if process is None:
group_name, process_name = split_namespec(name)
return self.signalProcessGroup(group_name, signal=signal)
try:
sig = signal_number(signal)
except ValueError:
raise RPCError(Faults.BAD_SIGNAL, signal)
if process.get_state() not in RUNNING_STATES:
raise RPCError(Faults.NOT_RUNNING, name)
msg = process.signal(sig)
if not msg is None:
raise RPCError(Faults.FAILED, msg)
return True
def do_clear(self, arg):
if not self.ctl.upcheck():
return
names = arg.split()
if not names:
self.ctl.output('Error: clear requires a process name')
self.help_clear()
return
supervisor = self.ctl.get_supervisor()
if 'all' in names:
results = supervisor.clearAllProcessLogs()
for result in results:
result = self._clearresult(result)
self.ctl.output(result)
else:
for name in names:
group_name, process_name = split_namespec(name)
try:
result = supervisor.clearProcessLogs(name)
except xmlrpclib.Fault, e:
error = self._clearresult({
'status': e.faultCode,
'name': process_name,
'group': group_name,
'description': e.faultString
})
self.ctl.output(error)
else:
name = make_namespec(group_name, process_name)
self.ctl.output('%s: cleared' % name)
def handle_request(self, request):
if request.command != 'GET':
request.error (400) # bad request
return
path, params, query, fragment = request.split_uri()
if '%' in path:
path = http_server.unquote(path)
# strip off all leading slashes
while path and path[0] == '/':
path = path[1:]
path, process_name_and_channel = path.split('/', 1)
try:
process_name, channel = process_name_and_channel.split('/', 1)
except ValueError:
# no channel specified, default channel to stdout
process_name = process_name_and_channel
channel = 'stdout'
from docker_supervisor.options import split_namespec
group_name, process_name = split_namespec(process_name)
group = self.supervisord.process_groups.get(group_name)
if group is None:
request.error(404) # not found
return
process = group.processes.get(process_name)
if process is None:
request.error(404) # not found
return
logfile = getattr(process.config, '%s_logfile' % channel, None)
if logfile is None or not os.path.exists(logfile):
# XXX problematic: processes that don't start won't have a log
# file and we probably don't want to go into fatal state if we try
# to read the log of a process that did not start.
request.error(410) # gone
return
mtime = os.stat(logfile)[stat.ST_MTIME]
request['Last-Modified'] = http_date.build_http_date(mtime)
request['Content-Type'] = 'text/plain'
# the lack of a Content-Length header makes the outputter
# send a 'Transfer-Encoding: chunked' response
request.push(tail_f_producer(request, logfile, 1024))
request.done()
def stopProcess(self, name, wait=True):
""" Stop a process named by name
@param string name The name of the process to stop (or 'group:name')
@param boolean wait Wait for the process to be fully stopped
@return boolean result Always return True unless error
"""
self._update('stopProcess')
group, process = self._getGroupAndProcess(name)
if process is None:
group_name, process_name = split_namespec(name)
return self.stopProcessGroup(group_name, wait)
if process.get_state() not in RUNNING_STATES:
raise RPCError(Faults.NOT_RUNNING, name)
msg = process.stop()
if msg is not None:
raise RPCError(Faults.FAILED, msg)
# We'll try to reap any killed child. FWIW, reap calls waitpid, and
# then, if waitpid returns a pid, calls finish() on the process with
# that pid, which drains any I/O from the process' dispatchers and
# changes the process' state. I chose to call reap without once=True
# because we don't really care if we reap more than one child. Even if
# we only reap one child. we may not even be reaping the child that we
# just stopped (this is all async, and process.stop() may not work, and
# we'll need to wait for SIGKILL during process.transition() as the
# result of normal select looping).
self.supervisord.reap()
if wait and process.get_state() not in STOPPED_STATES:
def onwait():
# process will eventually enter a stopped state by
# virtue of the supervisord.reap() method being called
# during normal operations
process.stop_report()
if process.get_state() not in STOPPED_STATES:
return NOT_DONE_YET
return True
onwait.delay = 0
onwait.rpcinterface = self
return onwait # deferred
return True
def do_signal(self, arg):
if not self.ctl.upcheck():
return
args = arg.split()
if len(args) < 2:
self.ctl.output(
'Error: signal requires a signal name and a process name')
self.help_signal()
return
sig = args[0]
names = args[1:]
supervisor = self.ctl.get_supervisor()
if 'all' in names:
results = supervisor.signalAllProcesses(sig)
for result in results:
result = self._signalresult(result)
self.ctl.output(result)
else:
for name in names:
group_name, process_name = split_namespec(name)
if process_name is None:
try:
results = supervisor.signalProcessGroup(
group_name, sig)
for result in results:
result = self._signalresult(result)
self.ctl.output(result)
except xmlrpclib.Fault, e:
if e.faultCode == xmlrpc.Faults.BAD_NAME:
error = "%s: ERROR (no such group)" % group_name
self.ctl.output(error)
else:
raise
else:
try:
supervisor.signalProcess(name, sig)
except xmlrpclib.Fault, e:
error = self._signalresult({
'status': e.faultCode,
'name': process_name,
'group': group_name,
'description': e.faultString
})
self.ctl.output(error)
else:
def _getGroupAndProcess(self, name):
# get process to start from name
group_name, process_name = split_namespec(name)
group = self.supervisord.process_groups.get(group_name)
if group is None:
raise RPCError(Faults.BAD_NAME, name)
if process_name is None:
return group, None
process = group.processes.get(process_name)
if process is None:
raise RPCError(Faults.BAD_NAME, name)
return group, process
def do_start(self, arg):
if not self.ctl.upcheck():
return
names = arg.split()
supervisor = self.ctl.get_supervisor()
if not names:
self.ctl.output("Error: start requires a process name")
self.help_start()
return
if 'all' in names:
results = supervisor.startAllProcesses()
for result in results:
result = self._startresult(result)
self.ctl.output(result)
else:
for name in names:
group_name, process_name = split_namespec(name)
if process_name is None:
try:
results = supervisor.startProcessGroup(group_name)
for result in results:
result = self._startresult(result)
self.ctl.output(result)
except xmlrpclib.Fault, e:
if e.faultCode == xmlrpc.Faults.BAD_NAME:
error = "%s: ERROR (no such group)" % group_name
self.ctl.output(error)
else:
raise
else:
try:
result = supervisor.startProcess(name)
except xmlrpclib.Fault, e:
error = self._startresult({
'status': e.faultCode,
'name': process_name,
'group': group_name,
'description': e.faultString
})
self.ctl.output(error)
else:
def startProcess(self, name, wait=True):
""" Start a process
@param string name Process name (or ``group:name``, or ``group:*``)
@param boolean wait Wait for process to be fully started
@return boolean result Always true unless error
"""
self._update('startProcess')
group, process = self._getGroupAndProcess(name)
if process is None:
group_name, process_name = split_namespec(name)
return self.startProcessGroup(group_name, wait)
# test filespec, don't bother trying to spawn if we know it will
# eventually fail
try:
filename, argv = process.get_execv_args()
except NotFound, why:
raise RPCError(Faults.NO_FILE, why.args[0])
def make_callback(self, namespec, action):
supervisord = self.context.supervisord
# the rpc interface code is already written to deal properly in a
# deferred world, so just use it
main = ('supervisor', SupervisorNamespaceRPCInterface(supervisord))
system = ('system', SystemNamespaceRPCInterface([main]))
rpcinterface = RootRPCInterface([main, system])
if action:
if action == 'refresh':
def donothing():
message = 'Page refreshed at %s' % time.ctime()
return message
donothing.delay = 0.05
return donothing
elif action == 'stopall':
callback = rpcinterface.supervisor.stopAllProcesses()
def stopall():
if callback() is NOT_DONE_YET:
return NOT_DONE_YET
else:
return 'All stopped at %s' % time.ctime()
stopall.delay = 0.05
return stopall
elif action == 'restartall':
callback = rpcinterface.system.multicall([{
'methodName':
'supervisor.stopAllProcesses'
}, {
'methodName':
'supervisor.startAllProcesses'
}])
def restartall():
result = callback()
if result is NOT_DONE_YET:
return NOT_DONE_YET
return 'All restarted at %s' % time.ctime()
restartall.delay = 0.05
return restartall
elif namespec:
def wrong():
return 'No such process named %s' % namespec
wrong.delay = 0.05
group_name, process_name = split_namespec(namespec)
group = supervisord.process_groups.get(group_name)
if group is None:
return wrong
process = group.processes.get(process_name)
if process is None:
return wrong
if action == 'start':
try:
bool_or_callback = (
rpcinterface.supervisor.startProcess(namespec))
except RPCError, e:
if e.code == Faults.NO_FILE:
msg = 'no such file'
elif e.code == Faults.NOT_EXECUTABLE:
msg = 'file not executable'
elif e.code == Faults.ALREADY_STARTED:
msg = 'already started'
elif e.code == Faults.SPAWN_ERROR:
msg = 'spawn error'
elif e.code == Faults.ABNORMAL_TERMINATION:
msg = 'abnormal termination'
else:
msg = 'unexpected rpc fault [%d] %s' % (e.code,
e.text)
def starterr():
return 'ERROR: Process %s: %s' % (namespec, msg)
starterr.delay = 0.05
return starterr
if callable(bool_or_callback):
def startprocess():
try:
result = bool_or_callback()
except RPCError, e:
if e.code == Faults.SPAWN_ERROR:
msg = 'spawn error'
elif e.code == Faults.ABNORMAL_TERMINATION:
msg = 'abnormal termination'
else:
msg = 'unexpected rpc fault [%d] %s' % (
e.code, e.text)
return 'ERROR: Process %s: %s' % (namespec,
msg)
if result is NOT_DONE_YET:
return NOT_DONE_YET
return 'Process %s started' % namespec
startprocess.delay = 0.05
return startprocess
else:
def startdone():
return 'Process %s started' % namespec
startdone.delay = 0.05
return startdone
elif action == 'stop':
try:
bool_or_callback = (
rpcinterface.supervisor.stopProcess(namespec))
except RPCError, e:
def stoperr():
return 'unexpected rpc fault [%d] %s' % (e.code,
e.text)
stoperr.delay = 0.05
return stoperr
if callable(bool_or_callback):
def stopprocess():
try:
result = bool_or_callback()
except RPCError, e:
return 'unexpected rpc fault [%d] %s' % (
e.code, e.text)
if result is NOT_DONE_YET:
return NOT_DONE_YET
return 'Process %s stopped' % namespec
stopprocess.delay = 0.05
return stopprocess