dispycos.py 文件源码

def __discover_node(self, msg, task=None):
        for _ in range(10):
            node_task = yield Task.locate('dispycos_node', location=msg.location,
                                          timeout=MsgTimeout)
            if not isinstance(node_task, Task):
                yield task.sleep(0.1)
                continue
            self._disabled_nodes.pop(msg.location.addr, None)
            node = self._nodes.pop(msg.location.addr, None)
            if node:
                logger.warning('Rediscovered dispycosnode at %s; discarding previous incarnation!',
                               msg.location.addr)
                self._disabled_nodes.pop(node.addr, None)
                if self._cur_computation:
                    status_task = self._cur_computation.status_task
                else:
                    status_task = None
                if status_task:
                    for server in node.servers.itervalues():
                        for rtask, job in server.rtasks.itervalues():
                            status = pycos.MonitorException(rtask, (Scheduler.TaskAbandoned, None))
                            status_task.send(status)
                        status_task.send(DispycosStatus(Scheduler.ServerAbandoned,
                                                        server.task.location))
                    info = DispycosNodeInfo(node.name, node.addr, node.cpus, node.platform,
                                            node.avail_info)
                    status_task.send(DispycosStatus(Scheduler.NodeAbandoned, info))
            node = self._disabled_nodes.get(msg.location.addr, None)
            if not node:
                node = Scheduler._Node(msg.name, msg.location.addr)
                self._disabled_nodes[msg.location.addr] = node
            node.task = node_task
            yield self.__get_node_info(node, task=task)
            raise StopIteration