def wrapped(event, process_id, wait=True, exit_on_error=False,
*args, **kwargs):
process_state = event.pool.context['server'].process_state
if process_id in process_state:
state = process_state[process_id]
if is_running(state):
event.failed('%s already running.' % name.capitalize())
return
logging.debug('Start process "%s"' % name)
process_state[process_id] = {
'status': 'open',
'pid': 0,
'id': process_id,
'name': name,
}
ret = f(event, process_id, *args, **kwargs)
if wait:
exit_status = ret.wait()
# process already running
if exit_status == 2:
logging.critical(
'%s already running. Shutdown it first.',
name.capitalize()
)
process_state[process_id] = {
'status': 'error',
'pid': 0,
'message': '%s already running.' % name.capitalize(),
}
event.failed('%s already running.' % name.capitalize())
if exit_on_error and exit_status != 0:
exit(0)
return ret
def domain_start(
event, name=None, id=None, wait=True, exit_on_error=False,
server_host=None, server_port=None
):
if id is None:
id = uuid.uuid4()
# deny run two domains with the same name
if False:
process_state = event.pool.context['server'].process_state
for stt in process_state.values():
if name == stt['name'] and is_running(stt):
return event.failed(
'Processes with name "%s" is already running' % (name,)
)
do_domain_start(
event,
str(id),
wait=wait,
exit_on_error=exit_on_error,
server_host=server_host,
server_port=server_port,
name=name
)
return True
def stop_process(event, name=None, id=None):
"""
If name is not None, than check that state have the same name
"""
# on the second run pid is already in event.context['id']
pid = event.context.get("id", id)
state = None
process_state = event.pool.context["server"].process_state
def is_proper_name(name, state_name):
if not name:
return False
if "." not in name and "." in state_name and state_name.startswith("%s." % name):
return True
if name == state_name:
return True
return False
if isinstance(pid, uuid.UUID) or str(pid) in process_state:
state = process_state[str(pid)]
pid = state["pid"]
elif isinstance(pid, int):
for stt in process_state.values():
if stt["pid"] == pid or (stt["pid"] == 0 and stt["was_pid"] == pid):
state = stt
break
elif name:
rows = []
for stt in process_state.values():
if is_proper_name(name, stt["name"]) and stt["pid"]:
state = stt
rows.append(stt)
pid = state["pid"]
if len(rows) > 1:
command = ""
for row in rows:
command += "%s (status: %s)\n" % (row["pid"], row["status"])
return event.failed(
'There are %s processes with name "%s".' " Specify which one to stop:\n%s" % (len(rows), name, command)
)
if not state:
return event.failed('Process state not found for name="%s", id="%s", cant kill' % (name, pid))
if state["pid"] == 0 and state["was_pid"] != 0:
pid = state["was_pid"]
# first run of the task
if "id" not in event.context:
event.context["id"] = state["id"]
if not is_running(state):
return event.failed("%s already stopped." % name.capitalize())
if not isinstance(pid, int) or not pid:
return event.failed("Wrong pid format %s" % repr(pid))
if not is_proper_name(name, state["name"]):
return event.failed('Process state name "%s" not equal "%s", cant kill' % (state["name"], name))
if state["status"] not in ["exit", "error", "kill", "clean"]:
try:
os.kill(pid, signal.SIGTERM)
logging.debug("Kill %s", pid)
process_state[str(state["id"])] = {"status": "kill"}
event.expire(600)
event.timeout(1)
except OSError:
process_state[str(state["id"])] = {"status": "error", "message": "Exit but not properly cleaned", "pid": 0}
return
if state["status"] == "exit" and state["pid"] == 0 and state["was_pid"] != 0 and pid:
try:
os.kill(pid, 0)
try:
os.kill(pid, signal.SIGTERM)
logging.debug("Kill hang process %s", pid)
event.expire(600)
except OSError:
process_state[str(state["id"])] = {
"status": "error",
"message": "Exit but not properly cleaned",
"pid": 0,
}
except OSError: # No process with locked PID
pass
process_state[str(state["id"])] = {"was_pid": 0}
return
if state["status"] in ["kill", "clean"]:
try:
os.kill(pid, 0)
except OSError: # No process with locked PID
# exception while cleaning
if state["status"] == "clean":
process_state[str(state["id"])] = {
"status": "error",
"message": "Exit but not properly cleaned",
"pid": 0,
}
logging.warn("Process with pid %s stopped with errors", pid)
else:
logging.debug("Successfully stopped process with pid %s", pid)
return
event.timeout(1)
def stop_process(event, name=None, id=None):
"""
If name is not None, than check that state have the same name
"""
# on the second run pid is already in event.context['id']
pid = event.context.get('id', id)
state = None
process_state = event.pool.context['server'].process_state
def is_proper_name(name, state_name):
if not name:
return False
if '.' not in name and '.' in state_name \
and state_name.startswith('%s.' % name):
return True
if name == state_name:
return True
return False
if isinstance(pid, uuid.UUID) or str(pid) in process_state:
state = process_state[str(pid)]
pid = state['pid']
elif isinstance(pid, int):
for stt in process_state.values():
if stt['pid'] == pid or (stt['pid'] == 0 and stt['was_pid'] == pid):
state = stt
break
elif name:
rows = []
for stt in process_state.values():
if is_proper_name(name, stt['name']) and stt['pid']:
state = stt
rows.append(stt)
pid = state['pid']
if len(rows) > 1:
command = ''
for row in rows:
command += '%s (status: %s)\n' % (row['pid'], row['status'])
return event.failed(
'There are %s processes with name "%s".' \
' Specify which one to stop:\n%s'
% (len(rows), name, command)
)
if not state:
return event.failed(
'Process state not found for name="%s", id="%s", cant kill'
% (name, pid))
if state['pid'] == 0 and state['was_pid'] != 0:
pid = state['was_pid']
# first run of the task
if 'id' not in event.context:
event.context['id'] = state['id']
if not is_running(state):
return event.failed('%s already stopped.' % name.capitalize())
if not isinstance(pid, int) or not pid:
return event.failed('Wrong pid format %s' % repr(pid))
if not is_proper_name(name, state['name']):
return event.failed(
'Process state name "%s" not equal "%s", cant kill' % (
state['name'], name))
if state['status'] not in ['exit', 'error', 'kill', 'clean']:
try:
os.kill(pid, signal.SIGTERM)
logging.debug('Kill %s', pid)
process_state[str(state['id'])] = {
'status': 'kill',
}
event.expire(600)
event.timeout(1)
except OSError:
process_state[str(state['id'])] = {
'status': 'error',
'message': 'Exit but not properly cleaned',
'pid': 0,
}
return
if state['status'] == 'exit' and state['pid'] == 0 \
and state['was_pid'] != 0 and pid:
try:
os.kill(pid, 0)
try:
os.kill(pid, signal.SIGTERM)
logging.debug('Kill hang process %s', pid)
event.expire(600)
except OSError:
process_state[str(state['id'])] = {
'status': 'error',
'message': 'Exit but not properly cleaned',
'pid': 0,
}
except OSError: #No process with locked PID
pass
process_state[str(state['id'])] = {
'was_pid': 0,
}
return
if state['status'] in ['kill', 'clean']:
try:
os.kill(pid, 0)
except OSError: #No process with locked PID
# exception while cleaning
if state['status'] == 'clean':
process_state[str(state['id'])] = {
'status': 'error',
'message': 'Exit but not properly cleaned',
'pid': 0,
}
logging.warn(
'Process with pid %s stopped with errors', pid)
else:
logging.debug(
'Successfully stopped process with pid %s', pid)
return
event.timeout(1)
