host.py 文件源码

def service_running(service_name):
    """Determine whether a system service is running"""
    if init_is_systemd():
        return service('is-active', service_name)
    else:
        try:
            output = subprocess.check_output(
                ['service', service_name, 'status'],
                stderr=subprocess.STDOUT).decode('UTF-8')
        except subprocess.CalledProcessError:
            return False
        else:
            # This works for upstart scripts where the 'service' command
            # returns a consistent string to represent running 'start/running'
            if ("start/running" in output or "is running" in output or
                    "up and running" in output):
                return True
            # Check System V scripts init script return codes
            if service_name in systemv_services_running():
                return True
            return False