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src/share/ob_get_compat_mode.cpp

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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.
+ */
+
+#define USING_LOG_PREFIX SHARE
+#include "lib/mysqlclient/ob_mysql_connection.h"
+#include "lib/mysqlclient/ob_isql_connection_pool.h"
+#include "lib/mysqlclient/ob_mysql_proxy.h"
+#include "lib/mysqlclient/ob_mysql_result.h"
+#include "lib/string/ob_sql_string.h"
+#include "share/ob_get_compat_mode.h"
+#include "share/inner_table/ob_inner_table_schema_constants.h"
+#include "share/schema/ob_schema_service_sql_impl.h"
+#include "observer/ob_server_struct.h"
+#include "storage/ob_tenant_config_mgr.h"
+
+using namespace oceanbase::common;
+using namespace oceanbase::sql;
+using namespace oceanbase::share;
+using namespace oceanbase::common::sqlclient;
+using namespace oceanbase::share::schema;
+
+ObCompatModeGetter::ObCompatModeGetter() : id_mode_map_(), sql_proxy_(NULL), is_inited_(false)
+{}
+ObCompatModeGetter::~ObCompatModeGetter()
+{
+  destroy();
+}
+
+ObCompatModeGetter& ObCompatModeGetter::instance()
+{
+  static ObCompatModeGetter the_compat_mode_getter;
+  return the_compat_mode_getter;
+}
+
+int ObCompatModeGetter::get_tenant_mode(const uint64_t tenant_id, ObWorker::CompatMode& mode)
+{
+  return instance().get_tenant_compat_mode(tenant_id, mode);
+}
+
+int ObCompatModeGetter::check_is_oracle_mode_with_tenant_id(const uint64_t tenant_id, bool& is_oracle_mode)
+{
+  int ret = OB_SUCCESS;
+  ObWorker::CompatMode compat_mode = ObWorker::CompatMode::INVALID;
+
+  if (OB_FAIL(instance().get_tenant_compat_mode(tenant_id, compat_mode))) {
+    LOG_WARN("fail to get tenant mode", K(ret));
+  } else if (ObWorker::CompatMode::ORACLE == compat_mode) {
+    is_oracle_mode = true;
+  } else if (ObWorker::CompatMode::MYSQL == compat_mode) {
+    is_oracle_mode = false;
+  } else {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("compat_mode should not be INVALID.", K(ret));
+  }
+
+  return ret;
+}
+
+int ObCompatModeGetter::init(common::ObMySQLProxy* proxy)
+{
+  int ret = OB_SUCCESS;
+  if (IS_INIT) {
+    ret = OB_INIT_TWICE;
+  } else if (OB_FAIL(id_mode_map_.create(
+                 bucket_num, ObModIds::OB_HASH_BUCKET_TENANT_COMPAT_MODE, ObModIds::OB_HASH_NODE_TENANT_COMPAT_MODE))) {
+    LOG_WARN("create hash table failed", K(ret));
+  } else {
+    sql_proxy_ = proxy;
+    is_inited_ = true;
+  }
+  return ret;
+}
+
+void ObCompatModeGetter::destroy()
+{
+  if (IS_INIT) {
+    id_mode_map_.destroy();
+  }
+}
+
+int ObCompatModeGetter::get_tenant_compat_mode(const uint64_t tenant_id, ObWorker::CompatMode& mode)
+{
+  int ret = OB_SUCCESS;
+  ObCompatibilityMode tmp_mode = ObCompatibilityMode::MYSQL_MODE;
+  if (OB_UNLIKELY(OB_INVALID_ID == tenant_id)) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("tenant id is invalid", K(ret), K(tenant_id), K(lbt()));
+  } else if (OB_SYS_TENANT_ID == tenant_id) {
+    mode = ObWorker::CompatMode::MYSQL;
+  } else if (OB_GTS_TENANT_ID == tenant_id) {
+    mode = ObWorker::CompatMode::MYSQL;
+  } else if (OB_HASH_NOT_EXIST == (ret = id_mode_map_.get_refactored(tenant_id, mode))) {
+    bool is_exist = false;
+    int overwrite = 1;
+    // First take from the local persistent tenant information
+    if (OB_FAIL(storage::ObTenantConfigMgr::get_instance().get_compat_mode(tenant_id, mode))) {
+      if (ret != OB_ENTRY_NOT_EXIST) {
+        LOG_WARN("failed to get compat mode", K(ret), K(tenant_id));
+      } else {
+        ret = OB_SUCCESS;
+      }
+    } else {
+      is_exist = true;
+      ret = id_mode_map_.set_refactored(tenant_id, mode, overwrite);
+    }
+    // cant get it locally, go to the schema to get it
+    if (OB_SUCC(ret) && !is_exist) {
+      if (OB_ISNULL(sql_proxy_)) {
+        ret = OB_ERR_UNEXPECTED;
+        LOG_WARN("sql_proxy is null", K(ret), K(lbt()));
+      } else if (OB_FAIL(ObSchemaServiceSQLImpl::fetch_tenant_compat_mode(*sql_proxy_, tenant_id, tmp_mode))) {
+        LOG_WARN("failed to fetch tenant compat mode", K(ret), K(tenant_id), K(lbt()));
+      } else {
+        if (tmp_mode == ObCompatibilityMode::MYSQL_MODE) {
+          mode = ObWorker::CompatMode::MYSQL;
+          ret = id_mode_map_.set_refactored(tenant_id, mode, overwrite);
+        } else if (tmp_mode == ObCompatibilityMode::ORACLE_MODE) {
+          mode = ObWorker::CompatMode::ORACLE;
+          ret = id_mode_map_.set_refactored(tenant_id, mode, overwrite);
+        } else {
+          ret = OB_ERR_UNEXPECTED;
+          LOG_WARN("unexpected compat mode", K(tmp_mode), K(ret), K(lbt()));
+        }
+      }
+    }
+  }
+  return ret;
+}
+
+// only for unittest
+int ObCompatModeGetter::set_tenant_compat_mode(const uint64_t tenant_id, ObWorker::CompatMode& mode)
+{
+  int ret = OB_SUCCESS;
+  int overwrite = 1;
+  if (OB_UNLIKELY(OB_INVALID_ID == tenant_id)) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("tenant id is invalid", K(ret), K(tenant_id));
+  } else if (ObWorker::CompatMode::MYSQL != mode && ObWorker::CompatMode::ORACLE != mode) {
+    ret = OB_INVALID_ARGUMENT;
+    LOG_WARN("invalid tenant compat mode", K(ret), K(tenant_id), K(mode));
+  } else if (OB_FAIL(id_mode_map_.set_refactored(tenant_id, mode, overwrite))) {
+    LOG_WARN("fail to set tenant compat mode", K(ret), K(tenant_id), K(mode));
+  }
+  return ret;
+}
+
+int ObCompatModeGetter::reset_compat_getter_map()
+{
+  int ret = OB_SUCCESS;
+  if (!IS_INIT) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("compat mode geter do not init, can not reset map", K(ret));
+  } else if (OB_FAIL(id_mode_map_.reuse())) {
+    LOG_WARN("fail to reuse id mode map", K(ret));
+  }
+  return ret;
+}