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src/clog/ob_i_disk_log_buffer.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_CLOG_OB_I_DISK_LOG_BUFFER_H_
+#define OCEANBASE_CLOG_OB_I_DISK_LOG_BUFFER_H_
+#include "ob_buffer_task.h"
+
+namespace oceanbase {
+namespace clog {
+class ObDiskBufferTask : public ObIBufferTask {
+  public:
+  ObDiskBufferTask() : proposal_id_(), buf_(NULL), len_(0), offset_(0)
+  {
+    need_callback_ = true;
+  }
+
+  public:
+  void reset();
+  void set(char* buf, const int64_t len);
+  common::ObProposalID get_proposal_id() const
+  {
+    return proposal_id_;
+  }
+  char* get_data_buffer() const
+  {
+    return buf_;
+  }
+  int64_t get_data_len() const
+  {
+    return len_;
+  }
+  int64_t get_entry_cnt() const
+  {
+    return 1;
+  }
+  // st == single thread
+  virtual int st_after_consume(const int handle_err) = 0;
+
+  protected:
+  int fill_buffer(char* buf, const offset_t offset);
+
+  protected:
+  common::ObProposalID proposal_id_;
+  char* buf_;
+  int64_t len_;
+  offset_t offset_;
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObDiskBufferTask);
+};
+
+class ObIDiskLogBuffer {
+  public:
+  ObIDiskLogBuffer()
+  {}
+  virtual ~ObIDiskLogBuffer()
+  {}
+
+  private:
+  virtual int submit(ObIBufferTask* task) = 0;
+};
+};  // end namespace clog
+};  // end namespace oceanbase
+
+#endif /* OCEANBASE_CLOG_OB_I_DISK_LOG_BUFFER_H_ */