patch 4.0

src/share/ob_cluster_role.h

@@ -0,0 +1,90 @@
+/**
+ * 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_COMMON_OB_CLUSTER_ROLE_H_
+#define OCEANBASE_COMMON_OB_CLUSTER_ROLE_H_
+#include <pthread.h>
+#include "lib/string/ob_string.h"
+namespace oceanbase
+{
+namespace common
+{
+enum ObClusterRole
+{
+  INVALID_CLUSTER_ROLE = 0,
+  PRIMARY_CLUSTER = 1,
+  STANDBY_CLUSTER = 2,
+};
+
+enum ObClusterStatus
+{
+  INVALID_CLUSTER_STATUS = 0,
+  CLUSTER_VALID = 1,
+  CLUSTER_DISABLED,
+  REGISTERED,
+  CLUSTER_DISABLED_WITH_READONLY,
+  MAX_CLUSTER_STATUS,
+};
+
+enum ObProtectionMode
+{
+  INVALID_PROTECTION_MODE = 0,
+  MAXIMUM_PERFORMANCE_MODE = 1,
+  MAXIMUM_AVAILABILITY_MODE = 2,
+  MAXIMUM_PROTECTION_MODE = 3,
+  PROTECTION_MODE_MAX
+};
+
+enum ObProtectionLevel
+{
+  INVALID_PROTECTION_LEVEL = 0,
+  MAXIMUM_PERFORMANCE_LEVEL = 1,
+  MAXIMUM_AVAILABILITY_LEVEL = 2,
+  MAXIMUM_PROTECTION_LEVEL = 3,
+  RESYNCHRONIZATION_LEVEL = 4,
+  MPF_TO_MPT_LEVEL = 5,// mpf->mpt middle state, used under mpf mode
+  MPF_TO_MA_MPT_LEVEL = 6,// mpf->ma middle state, mpf->mpt middle state, used under ma mode
+  PROTECTION_LEVEL_MAX
+};
+const char *cluster_role_to_str(ObClusterRole type);
+const char *cluster_status_to_str(ObClusterStatus type);
+const char *cluster_protection_mode_to_str(ObProtectionMode mode);
+const char *cluster_protection_level_to_str(ObProtectionLevel level);
+ObProtectionMode str_to_cluster_protection_mode(const common::ObString &str);
+ObProtectionLevel str_to_cluster_protection_level(const common::ObString &str);
+bool is_disabled_cluster(const ObClusterStatus status);
+
+// Check primary protectioni level whether need sync-transport clog to standby
+// ex. MA, MPT, and other middle level
+bool need_sync_to_standby_level(const ObProtectionLevel level);
+
+// Check standby protection level whether only receive sync-transported clog
+// ex. MA, MPT, RESYNC
+bool is_sync_level_on_standby(const ObProtectionLevel standby_level);
+
+// Whether in steady state.
+// Only steady state can change protection mode, switchover and so on.
+bool is_steady_protection_level(const ObProtectionLevel level);
+
+// The protection mode which need SYNC mode standby
+// MPT or MA mode
+bool has_sync_standby_mode(const ObProtectionMode mode);
+
+//Check if the protection level is the MAXIMUM PROTECTION or MAXIMUM AVAILABILITY protection level
+bool mpt_or_ma_protection_level(const ObProtectionLevel level);
+
+// Updating mode and level is not atomic, to check whether mode and level can match
+bool is_cluster_protection_mode_level_match(const ObProtectionMode mode, const ObProtectionLevel level);
+}//end namespace common
+}//end namespace oceanbase
+
+#endif //OCEANBASE_COMMON_OB_CLUSTER_ROLE_H_