| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| #ifndef KUDU_TSERVER_HEARTBEATER_H |
| #define KUDU_TSERVER_HEARTBEATER_H |
| |
| #include "kudu/gutil/gscoped_ptr.h" |
| #include "kudu/gutil/macros.h" |
| #include "kudu/util/status.h" |
| |
| namespace kudu { |
| namespace tserver { |
| |
| class TabletServer; |
| struct TabletServerOptions; |
| |
| // Component of the Tablet Server which is responsible for heartbeating to the |
| // leader master. |
| // |
| // TODO: send heartbeats to non-leader masters. |
| class Heartbeater { |
| public: |
| Heartbeater(const TabletServerOptions& options, TabletServer* server); |
| Status Start(); |
| Status Stop(); |
| |
| // Trigger a heartbeat as soon as possible, even if the normal |
| // heartbeat interval has not expired. |
| void TriggerASAP(); |
| |
| ~Heartbeater(); |
| |
| private: |
| class Thread; |
| gscoped_ptr<Thread> thread_; |
| DISALLOW_COPY_AND_ASSIGN(Heartbeater); |
| }; |
| |
| } // namespace tserver |
| } // namespace kudu |
| #endif /* KUDU_TSERVER_HEARTBEATER_H */ |