clusters.py 文件源码

def on_get(self, req, resp, name):
        """
        Handles GET (or "status") requests for a tree image deployment
        across a Cluster.

        :param req: Request instance that will be passed through.
        :type req: falcon.Request
        :param resp: Response instance that will be passed through.
        :type resp: falcon.Response
        :param name: The name of the Cluster undergoing deployment.
        :type name: str
        """
        if not util.etcd_cluster_exists(name):
            self.logger.info(
                'Deploy GET requested for nonexistent cluster {0}'.format(
                    name))
            resp.status = falcon.HTTP_404
            return

        try:
            store_manager = cherrypy.engine.publish('get-store-manager')[0]
            cluster_deploy = store_manager.get(ClusterDeploy.new(name=name))
            self.logger.debug('Found ClusterDeploy for {0}'.format(name))
        except:
            # Return "204 No Content" if we have no status,
            # meaning no deployment is in progress.  The client
            # can't be expected to know that, so it's not a
            # client error (4xx).
            self.logger.debug((
                'Deploy GET requested for {0} but no deployment '
                'has ever been executed.').format(name))

            resp.status = falcon.HTTP_204
            return

        resp.status = falcon.HTTP_200
        req.context['model'] = cluster_deploy