[FEAT MERGE] Implement tenant cloning mechanism

Co-authored-by: lalalafeier <wufeifei2023@163.com>
Co-authored-by: wanyue-wy <345657357@qq.com>
Co-authored-by: joseph12138 <17862707376@163.com>

src/sql/resolver/cmd/ob_tenant_clone_resolver.h

@@ -0,0 +1,38 @@
+/**
+ * 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 _OB_CLONE_TENANT_RESOLVER_H
+#define _OB_CLONE_TENANT_RESOLVER_H
+#include "sql/resolver/cmd/ob_cmd_resolver.h"
+namespace oceanbase
+{
+namespace sql
+{
+class ObCloneTenantResolver : public ObCMDResolver
+{
+public:
+  explicit ObCloneTenantResolver(ObResolverParams &params);
+  virtual ~ObCloneTenantResolver();
+
+  virtual int resolve(const ParseNode &parse_tree);
+private:
+  int resolve_option_list_(const ParseNode *node,
+                           ObString &resource_pool_name,
+                           ObString &unit_config_name);
+private:
+  DISALLOW_COPY_AND_ASSIGN(ObCloneTenantResolver);
+};
+
+}
+}
+
+#endif /*_OB_CREATE_SNAPSHOT_RESOLVER_H*/