core.py 文件源码

def restart_on_change(self):
        """Restart the services in the self.restart_map{} attribute if any of
        the files identified by the keys changes for the wrapped call.

        This function is a @decorator that checks if the wrapped function
        changes any of the files identified by the keys in the
        self.restart_map{} and, if they change, restarts the services in the
        corresponding list.
        """
        checksums = {path: ch_host.path_hash(path)
                     for path in self.full_restart_map.keys()}
        yield
        restarts = []
        for path in self.full_restart_map:
            if ch_host.path_hash(path) != checksums[path]:
                restarts += self.full_restart_map[path]
        services_list = list(collections.OrderedDict.fromkeys(restarts).keys())
        for service_name in services_list:
            ch_host.service_stop(service_name)
        for service_name in services_list:
            ch_host.service_start(service_name)