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src/sql/executor/ob_remote_job_executor.h

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+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef OCEANBASE_SQL_EXECUTOR_OB_REMOTE_JOB_EXECUTOR_
+#define OCEANBASE_SQL_EXECUTOR_OB_REMOTE_JOB_EXECUTOR_
+namespace oceanbase {
+namespace sql {
+class ObTaskInfo;
+class ObJob;
+class ObTaskExecutor;
+class ObExecContext;
+class ObRemoteJobExecutor {
+  public:
+  ObRemoteJobExecutor();
+  virtual ~ObRemoteJobExecutor();
+  // set job waiting for schedule
+  void set_job(ObJob& job)
+  {
+    job_ = &job;
+  }
+  void set_task_executor(ObTaskExecutor& executor)
+  {
+    executor_ = &executor;
+  }
+  // schedule a job, distribute and execute tasks in the job.
+  int execute(ObExecContext& ctx);
+  inline void reset()
+  {
+    job_ = NULL;
+    executor_ = NULL;
+  }
+
+  private:
+  // disallow copy
+  ObRemoteJobExecutor(const ObRemoteJobExecutor& other);
+  ObRemoteJobExecutor& operator=(const ObRemoteJobExecutor& ohter);
+
+  int get_executable_task(ObExecContext& ctx, ObTaskInfo*& task);
+
+  private:
+  ObJob* job_;
+  ObTaskExecutor* executor_;
+};
+}  // namespace sql
+}  // namespace oceanbase
+#endif /* OCEANBASE_SQL_EXECUTOR_OB_REMOTE_JOB_EXECUTOR_ */
+//// end of header file