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oceanbase-admin
2021-05-31 22:56:52 +08:00
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src/sql/resolver/ddl/ob_use_database_resolver.cpp Normal file
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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 SQL_RESV
#include "sql/resolver/ddl/ob_use_database_resolver.h"
#include "sql/resolver/ddl/ob_use_database_stmt.h"
#include "sql/session/ob_sql_session_info.h"
#include "sql/ob_sql_utils.h"
namespace oceanbase {
using namespace share::schema;
using namespace common;
namespace sql {
ObUseDatabaseResolver::ObUseDatabaseResolver(ObResolverParams& params) : ObDDLResolver(params)
{}
ObUseDatabaseResolver::~ObUseDatabaseResolver()
{}
int ObUseDatabaseResolver::resolve(const ParseNode& parse_tree)
{
int ret = OB_SUCCESS;
ParseNode* node = const_cast<ParseNode*>(&parse_tree);
ObUseDatabaseStmt* use_database_stmt = NULL;
if (OB_ISNULL(node) || T_USE_DATABASE != node->type_ || 1 != node->num_child_ || OB_ISNULL(node->children_)) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid argument", K(node));
} else if (OB_ISNULL(node->children_[0]) || T_IDENT != node->children_[0]->type_) {
ret = OB_INVALID_ARGUMENT;
LOG_WARN("invalid argument", K(node), K(node->children_[0]));
} else if (OB_ISNULL(use_database_stmt = create_stmt<ObUseDatabaseStmt>())) {
ret = OB_ALLOCATE_MEMORY_FAILED;
LOG_ERROR("failed to create use_database_stmt");
} else {
ObString db_name;
db_name.assign_ptr(node->children_[0]->str_value_, static_cast<int32_t>(node->children_[0]->str_len_));
ObNameCaseMode mode = OB_NAME_CASE_INVALID;
if (OB_ISNULL(session_info_) || OB_ISNULL(schema_checker_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("invalid session info", K(session_info_), K(schema_checker_));
} else if (OB_FAIL(session_info_->get_name_case_mode(mode))) {
SERVER_LOG(WARN, "fail to get name case mode", K(mode), K(ret));
} else {
bool perserve_lettercase = share::is_oracle_mode() ? true : (mode != OB_LOWERCASE_AND_INSENSITIVE);
ObCollationType cs_type = CS_TYPE_INVALID;
if (OB_FAIL(session_info_->get_collation_connection(cs_type))) {
LOG_WARN("fail to get collation_connection", K(ret));
} else if (OB_FAIL(ObSQLUtils::check_and_convert_db_name(cs_type, perserve_lettercase, db_name))) {
LOG_WARN("fail to check and convert database name", K(db_name), K(ret));
} else {
CK(OB_NOT_NULL(schema_checker_));
CK(OB_NOT_NULL(schema_checker_->get_schema_guard()));
OZ(ObSQLUtils::cvt_db_name_to_org(*schema_checker_->get_schema_guard(), session_info_, db_name));
use_database_stmt->set_db_name(db_name);
uint64_t tenant_id = session_info_->get_effective_tenant_id();
share::schema::ObSessionPrivInfo session_priv;
session_info_->get_session_priv_info(session_priv);
uint64_t database_id = OB_INVALID_ID;
const share::schema::ObDatabaseSchema* db_schema = NULL;
if (OB_FAIL(schema_checker_->get_database_id(tenant_id, db_name, database_id))) {
LOG_USER_ERROR(OB_ERR_BAD_DATABASE, db_name.length(), db_name.ptr());
LOG_WARN("invalid database name. ", K(db_name));
} else if (OB_FAIL(schema_checker_->check_db_access(session_priv, db_name))) {
SQL_ENG_LOG(WARN, "fail to check user privilege", K(db_name), K(ret));
if (params_.disable_privilege_check_ == PRIV_CHECK_FLAG_DISABLE) {
LOG_WARN("db access privilege check is disabled");
ret = OB_SUCCESS;
}
}
if (OB_SUCC(ret)) {
if (OB_FAIL(schema_checker_->get_database_schema(tenant_id, database_id, db_schema))) {
LOG_WARN("failed to get db schema", K(ret), K(database_id));
} else {
use_database_stmt->set_db_id(database_id);
use_database_stmt->set_db_priv_set(session_priv.db_priv_set_);
use_database_stmt->set_db_charset(
ObString::make_string(ObCharset::charset_name(db_schema->get_charset_type())));
use_database_stmt->set_db_collation(
ObString::make_string(ObCharset::collation_name(db_schema->get_collation_type())));
}
}
}
}
}
return ret;
}
} // namespace sql
} // namespace oceanbase