baseimage-tutorial-framework/lib/tfw/mixins/supervisor_mixin.py

51 lines
1.6 KiB
Python

# Copyright (C) 2018 Avatao.com Innovative Learning Kft.
# All Rights Reserved. See LICENSE file for details.
import xmlrpc.client
from xmlrpc.client import Fault as SupervisorFault
from contextlib import suppress
from os import remove
from tfw.config import TFWENV
def get_supervisor_instance():
return xmlrpc.client.ServerProxy(TFWENV.SUPERVISOR_HTTP_URI).supervisor
class SupervisorBaseMixin:
supervisor = get_supervisor_instance()
def acquire_own_supervisor_instance(self):
"""
Give this instance non-static, local xmlrpc client
"""
self.supervisor = get_supervisor_instance()
class SupervisorMixin(SupervisorBaseMixin):
def stop_process(self, process_name):
with suppress(SupervisorFault):
self.supervisor.stopProcess(process_name)
def start_process(self, process_name):
self.supervisor.startProcess(process_name)
def restart_process(self, process_name):
self.stop_process(process_name)
self.start_process(process_name)
class SupervisorLogMixin(SupervisorBaseMixin):
def read_stdout(self, process_name, tail=0):
return self.supervisor.readProcessStdoutLog(process_name, -tail, 0)
def read_stderr(self, process_name, tail=0):
return self.supervisor.readProcessStderrLog(process_name, -tail, 0)
def clear_logs(self, process_name):
for logfile in ('stdout_logfile', 'stderr_logfile'):
with suppress(FileNotFoundError):
remove(self.supervisor.getProcessInfo(process_name)[logfile])
self.supervisor.clearProcessLogs(process_name)