def _StartMonitoringProcess(self, process):
"""Starts monitoring a process.
Args:
process (MultiProcessBaseProcess): process.
Raises:
IOError: if the RPC client cannot connect to the server.
KeyError: if the process is not registered with the engine or
if the process is already being monitored.
OSError: if the RPC client cannot connect to the server.
ValueError: if the process is missing.
"""
if process is None:
raise ValueError('Missing process.')
pid = process.pid
if pid in self._process_information_per_pid:
raise KeyError(
'Already monitoring process (PID: {0:d}).'.format(pid))
if pid in self._rpc_clients_per_pid:
raise KeyError(
'RPC client (PID: {0:d}) already exists'.format(pid))
rpc_client = plaso_xmlrpc.XMLProcessStatusRPCClient()
# Make sure that a worker process has started its RPC server.
# The RPC port will be 0 if no server is available.
rpc_port = process.rpc_port.value
time_waited_for_process = 0.0
while not rpc_port:
time.sleep(0.1)
rpc_port = process.rpc_port.value
time_waited_for_process += 0.1
if time_waited_for_process >= self._RPC_SERVER_TIMEOUT:
raise IOError(
'RPC client unable to determine server (PID: {0:d}) port.'.format(
pid))
hostname = 'localhost'
if not rpc_client.Open(hostname, rpc_port):
raise IOError((
'RPC client unable to connect to server (PID: {0:d}) '
'http://{1:s}:{2:d}').format(pid, hostname, rpc_port))
self._rpc_clients_per_pid[pid] = rpc_client
self._process_information_per_pid[pid] = process_info.ProcessInfo(pid)
def _StartMonitoringProcess(self, pid):
"""Starts monitoring a process.
Args:
pid (int): process identifier (PID).
Raises:
KeyError: if the process is not registered with the engine or
if the process if the processed is already being monitored.
IOError: if the RPC client cannot connect to the server.
"""
self._RaiseIfNotRegistered(pid)
if pid in self._process_information_per_pid:
raise KeyError(
u'Process (PID: {0:d}) already in monitoring list.'.format(
pid))
if pid in self._rpc_clients_per_pid:
raise KeyError(
u'RPC client (PID: {0:d}) already exists'.format(pid))
process = self._processes_per_pid[pid]
rpc_client = plaso_xmlrpc.XMLProcessStatusRPCClient()
# Make sure that a process has started its RPC server. RPC port will
# be 0 if no server is available.
rpc_port = process.rpc_port.value
time_waited_for_process = 0.0
while not rpc_port:
time.sleep(0.1)
rpc_port = process.rpc_port.value
time_waited_for_process += 0.1
if time_waited_for_process >= self._RPC_SERVER_TIMEOUT:
raise IOError(
u'RPC client unable to determine server (PID: {0:d}) port.'
.format(pid))
hostname = u'localhost'
if not rpc_client.Open(hostname, rpc_port):
raise IOError(
(u'RPC client unable to connect to server (PID: {0:d}) '
u'http://{1:s}:{2:d}').format(pid, hostname, rpc_port))
self._rpc_clients_per_pid[pid] = rpc_client
self._process_information_per_pid[pid] = process_info.ProcessInfo(pid)