def __init__(self, name, command, params=None, workdir=None, host=None, allowTerminate=False):
if host == None: host = CRemoteHostInfo()
CProcessBase.__init__(self, name, host)
CLogMessageSource.__init__(self)
self.command = command
self.params = params # Configurable parameters
self.workdir = workdir
self.process = None
self.lastPollState = 0
self.keepalive = False
self.allowTerminate = allowTerminate # CAST apps should not autoTerm; others may
self.restarted = 0
self.willClearAt = None # Flushing
self.pipeReader = None
self.partialLine = {} # one place for every pipe
self.srcid = "process.%s.%s" % (self.host.host.replace('.', '_'), self.name.replace('.', '_'))
self.messageQueue = CMessageTextQueue(self.srcid)
class CProcess(CProcessBase, CLogMessageSource):
def __init__(self, name, command, params=None, workdir=None, host=None, allowTerminate=False):
if host == None: host = CRemoteHostInfo()
CProcessBase.__init__(self, name, host)
CLogMessageSource.__init__(self)
self.command = command
self.params = params # Configurable parameters
self.workdir = workdir
self.process = None
self.lastPollState = 0
self.keepalive = False
self.allowTerminate = allowTerminate # CAST apps should not autoTerm; others may
self.restarted = 0
self.willClearAt = None # Flushing
self.pipeReader = None
self.partialLine = {} # one place for every pipe
self.srcid = "process.%s.%s" % (self.host.host.replace('.', '_'), self.name.replace('.', '_'))
self.messageQueue = CMessageTextQueue(self.srcid)
def __del__(self):
self.stop()
def _getLogMessages(self): # CLogMessageSource
return self.messageQueue.getMessages(True, True)
def isSameLogMessageSource(self, aObject): #CLogMessageSource
return aObject == self
def setMessageProcessor(self, messageProcessor): # CLogMessageSource
self.messageQueue.messageProcessor = messageProcessor
def getStatusStr(self):
st = CProcessBase.getStatusStr(self)
if st != None: return st
if self.process == None: return "Not started"
if self.restarted > 0: return "%d (r%d)" % (self.process.pid, self.restarted)
return "%d" % self.process.pid
def isRunning(self):
if self.process == None: return False
self.lastPollState = self.process.poll()
if self.lastPollState == None: return True
return False
def _setStatus(self, newStatus):
old = self.status
self.status = newStatus
self.notifyStatusChange(old, newStatus)
def _beginFlush(self):
self.willClearAt = time.time() + 1
self._setStatus(CProcessBase.FLUSH)
def start(self, command=None, params=None, workdir=None, env=None, allowTerminate=None):
if self.isRunning():
warn("Process '%s' is already running" % self.name)
return
if params == None: params = self.params
else: self.params = params
if command == None or command.strip() == "":
if self.command == None or self.command.strip() == "":
error("No command for process '%s'" % self.name)
return
command = self.command
self.error = CProcessBase.OK
if params != None:
for par in params.iterkeys():
command = command.replace("[%s]" % par, "%s" % params[par])
log("CMD=%s" % command)
command = cmdlineToArray(command)
if workdir == None or workdir.strip() == "":
workdir = self.workdir
if workdir != None: log("PWD=%s" % workdir)
if allowTerminate != None:
self.allowTerminate = True if allowTerminate else False
try:
self._setStatus(CProcessBase.STARTING)
self._startReader()
self.process = subp.Popen(
command, bufsize=1,
stdout=subp.PIPE, stderr=subp.PIPE,
cwd=workdir, env=env)
# Make the pipes nonblocking so we can read the messages better
fcntl.fcntl(self.process.stdout, fcntl.F_SETFL, os.O_NONBLOCK)
fcntl.fcntl(self.process.stderr, fcntl.F_SETFL, os.O_NONBLOCK)
time.sleep(0.01)
self._setStatus(max(1, self.process.pid))
log("Process '%s' started, pid=%d" % (self.name, self.process.pid))
except Exception, e:
self.process = None
self.error = CProcessBase.ERRSTART
self._setStatus(CProcessBase.STOPPED)
error("Process '%s' failed to start" % (self.name))
error("Command: '%s'" % (" ".join(command)))
error("%s" % e)
time.sleep(0.01)
