patch 4.0
This commit is contained in:
wangzelin.wzl
288
src/pl/ob_pl_router.cpp
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288
src/pl/ob_pl_router.cpp
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/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX PL
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#include "pl/ob_pl_router.h"
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#include "share/schema/ob_routine_info.h"
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#include "parser/ob_pl_parser.h"
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#include "pl/ob_pl_resolver.h"
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#include "pl/ob_pl_package.h"
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#include "share/ob_errno.h"
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#include "sql/ob_sql_utils.h"
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namespace oceanbase {
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using namespace common;
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using namespace share;
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using namespace schema;
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using namespace sql;
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namespace pl {
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int ObPLRouter::check_error_in_resolve(int code)
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{
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int ret = OB_SUCCESS;
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switch (code) {
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case OB_ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG:
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case OB_ER_COMMIT_NOT_ALLOWED_IN_SF_OR_TRG:
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case OB_ER_SP_NO_RETSET:
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case OB_ERR_SP_COND_MISMATCH:
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case OB_ERR_SP_LILABEL_MISMATCH:
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case OB_ERR_SP_CURSOR_MISMATCH:
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case OB_ERR_SP_DUP_VAR:
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case OB_ERR_SP_DUP_TYPE:
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case OB_ERR_SP_DUP_CONDITION:
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case OB_ERR_SP_DUP_LABEL:
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case OB_ERR_SP_DUP_CURSOR:
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case OB_ERR_SP_DUP_HANDLER:
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case OB_ER_SP_NO_RECURSIVE_CREATE:
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case OB_ER_SP_BADRETURN:
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case OB_ER_SP_BAD_CURSOR_SELECT:
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case OB_ER_SP_VARCOND_AFTER_CURSHNDLR:
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case OB_ER_SP_CURSOR_AFTER_HANDLER:
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case OB_ER_SP_BAD_SQLSTATE:
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case OB_ERR_UNKNOWN_TABLE:
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case OB_ER_SP_CANT_SET_AUTOCOMMIT:
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case OB_ERR_GOTO_BRANCH_ILLEGAL:
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case OB_ERR_UNEXPECTED:
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case OB_ERR_RETURN_VALUE_REQUIRED:
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case OB_ERR_END_LABEL_NOT_MATCH:
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case OB_ERR_TOO_LONG_IDENT: {
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ret = code;
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}
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break;
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case OB_ERR_SP_UNDECLARED_VAR: {
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//某些错误码oracle模式需要覆盖，mysql模式不能覆盖
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if (lib::is_oracle_mode()) {
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LOG_WARN("resolver error", K(ret), K(code));
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ObPL::insert_error_msg(code);
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} else {
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ret = code;
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}
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}
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break;
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case OB_ERR_NO_RETURN_IN_FUNCTION:
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case OB_ERR_STMT_NOT_ALLOW_IN_MYSQL_FUNC_TRIGGER:
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case OB_ERR_TOO_LONG_STRING_TYPE:
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case OB_ERR_WIDTH_OUT_OF_RANGE:
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case OB_ERR_REDEFINE_LABEL:
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case OB_ERR_STMT_NOT_ALLOW_IN_MYSQL_PROCEDRUE:
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case OB_ERR_TOO_BIG_PRECISION:
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case OB_ERR_TOO_BIG_SCALE:
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case OB_ERR_TOO_BIG_DISPLAYWIDTH:
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case OB_ERR_TOO_LONG_COLUMN_LENGTH:
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case OB_ERR_TRIGGER_CANT_CHANGE_ROW:
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case OB_ERR_SET_USAGE:
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case OB_ERR_COLUMN_SPEC:
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case OB_ERR_TRIGGER_NO_SUCH_ROW:
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case OB_ERR_SP_BAD_CONDITION_TYPE:
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case OB_ERR_DUP_SIGNAL_SET:
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case OB_ERR_CANNOT_UPDATE_VIRTUAL_COL_IN_TRG: {
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if (lib::is_mysql_mode()) {
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ret = code;
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break;
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}
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// oracle mode go to default
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}
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default: {
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LOG_WARN("resolver error", K(ret), K(code));
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// do not recover the ret intentionaly.
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ObPL::insert_error_msg(code);
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}
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break;
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}
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return ret;
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}
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int ObPLRouter::analyze(ObString &route_sql, ObIArray<ObDependencyInfo> &dep_info)
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{
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int ret = OB_SUCCESS;
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HEAP_VAR(ObPLFunctionAST, func_ast, inner_allocator_) {
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if (routine_info_.is_pipelined()) {
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func_ast.set_pipelined();
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}
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if (OB_FAIL(simple_resolve(func_ast))) {
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// 兼容mysql，部分resolve阶段错误需要在创建时抛出
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if (OB_FAIL(check_error_in_resolve(ret))) {
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LOG_WARN("resolve error with error code", K(ret));
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} else {
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LOG_USER_WARN(OB_ERR_RESOLVE_SQL);
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}
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} else if (OB_FAIL(analyze_stmt(func_ast.get_body(), route_sql))) {
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LOG_WARN("failed to analyze stmt", K(ret));
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} else {
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ObString dep_attr;
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OZ (ObDependencyInfo::collect_dep_infos(func_ast.get_dependency_table(),
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dep_info,
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routine_info_.get_object_type(),
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0, dep_attr, dep_attr));
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}
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}
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return ret;
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}
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int ObPLRouter::simple_resolve(ObPLFunctionAST &func_ast)
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{
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int ret = OB_SUCCESS;
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func_ast.set_name(routine_info_.get_routine_name());
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if (ROUTINE_PROCEDURE_TYPE == routine_info_.get_routine_type()) {
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func_ast.set_proc_type(STANDALONE_PROCEDURE);
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} else if (ROUTINE_FUNCTION_TYPE == routine_info_.get_routine_type()) {
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func_ast.set_proc_type(STANDALONE_FUNCTION);
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}
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if (routine_info_.is_udt_routine()) {
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func_ast.set_is_udt_routine();
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}
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//添加参数列表
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for (int64_t i = 0; OB_SUCC(ret) && i < routine_info_.get_routine_params().count(); ++i) {
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ObRoutineParam *param = routine_info_.get_routine_params().at(i);
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ObPLDataType param_type;
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CK (OB_NOT_NULL(param));
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OZ (pl::ObPLDataType::transform_from_iparam(param,
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schema_guard_,
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session_info_,
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inner_allocator_,
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sql_proxy_,
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param_type));
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if (OB_SUCC(ret)) {
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if (param->is_ret_param()) {
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func_ast.set_ret_type(param_type);
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if (OB_FAIL(func_ast.set_ret_type_info(param->get_extended_type_info()))) {
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LOG_WARN("fail to set type info", K(ret));
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}
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} else if (OB_FAIL(func_ast.add_argument(param->get_param_name(),
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param_type,
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NULL,
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¶m->get_extended_type_info(),
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param->is_in_sp_param(),
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param->is_self_param()))) { //输入参数的default值在编译时候没用
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LOG_WARN("failed to add argument", K(param->get_param_name()), K(param->get_param_type()), K(ret));
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} else {
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// do nothing
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}
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}
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}
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//Parser
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ObStmtNodeTree *parse_tree = NULL;
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if (OB_SUCC(ret)) {
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ObString body = routine_info_.get_routine_body(); //获取body字符串
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ObPLParser parser(inner_allocator_, session_info_.get_local_collation_connection());
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CHECK_COMPATIBILITY_MODE(&session_info_);
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if (OB_FAIL(ObSQLUtils::convert_sql_text_from_schema_for_resolve(
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inner_allocator_, session_info_.get_dtc_params(), body))) {
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LOG_WARN("fail to get routine body", K(ret));
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} else if (OB_FAIL(parser.parse_routine_body(body, parse_tree))) {
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LOG_WARN("parse routine body failed", K(ret), K(body));
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}
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}
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//Resolver
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if (OB_SUCC(ret)) {
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const bool is_prepare_protocol = false;
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ObPLPackageGuard package_guard(sql::PACKAGE_RESV_HANDLE);
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ObPLResolver resolver(inner_allocator_,
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session_info_,
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schema_guard_,
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package_guard,
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sql_proxy_,
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expr_factory_,
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NULL,
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is_prepare_protocol,
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false,
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false,
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NULL,
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NULL,
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routine_info_.get_tg_timing_event());
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if (OB_ISNULL(parse_tree)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("pl body is NULL", K(parse_tree), K(ret));
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} else if (OB_FAIL(resolver.init(func_ast))) {
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LOG_WARN("failed to init resolver", K(routine_info_), K(ret));
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} else if (OB_FAIL(resolver.resolve(parse_tree, func_ast))) {
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LOG_WARN("failed to analyze pl body", K(routine_info_), K(ret));
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} else if (lib::is_mysql_mode() && func_ast.is_function() && !func_ast.has_return()) {
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ret = OB_ERR_NO_RETURN_IN_FUNCTION;
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LOG_WARN("mysql func need return. ", K(ret));
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LOG_USER_ERROR(OB_ERR_NO_RETURN_IN_FUNCTION, func_ast.get_name().length(),
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func_ast.get_name().ptr());
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} else { /*do nothing*/ }
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}
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return ret;
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}
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int ObPLRouter::analyze_stmt(const ObPLStmt *stmt, ObString &route_sql)
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{
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int ret = OB_SUCCESS;
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if (NULL != stmt && route_sql.empty()) {
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switch (stmt->get_type()) {
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case PL_SQL: {
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const ObPLSqlStmt *sql_stmt = static_cast<const ObPLSqlStmt*>(stmt);
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if (OB_FAIL(check_route_sql(sql_stmt, route_sql))) {
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LOG_WARN("failed to check route sql", K(ret));
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}
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}
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break;
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case PL_OPEN:
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case PL_OPEN_FOR: {
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const ObPLOpenStmt *open_stmt = static_cast<const ObPLOpenStmt*>(stmt);
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const ObPLCursor *cursor = open_stmt->get_cursor();
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if (OB_ISNULL(cursor)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("cursor is NULL", K(cursor), K(ret));
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} else {
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if (OB_FAIL(check_route_sql(&cursor->get_value(), route_sql))) {
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LOG_WARN("failed to check route sql", K(ret));
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}
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}
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}
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break;
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case PL_HANDLER: {
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// skip
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}
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break;
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case PL_CALL: {
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const ObPLCallStmt *inner_call_stmt = static_cast<const ObPLCallStmt*>(stmt);
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route_sql = inner_call_stmt->get_route_sql();
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}
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break;
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default: {
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for (int64_t i = 0; OB_SUCC(ret) && route_sql.empty() && i < stmt->get_child_size(); ++i) {
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if (OB_FAIL(analyze_stmt(stmt->get_child_stmt(i), route_sql))) {
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LOG_WARN("failed to analyze stmt", K(i), K(ret));
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}
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}
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}
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break;
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}
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}
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return ret;
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}
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int ObPLRouter::check_route_sql(const ObPLSql *pl_sql, ObString &route_sql)
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{
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int ret = OB_SUCCESS;
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bool has_table = false;
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for (int64_t i = 0; OB_SUCC(ret) && !has_table && i < pl_sql->get_ref_objects().count(); ++i) {
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if (pl_sql->get_ref_objects().at(i).is_base_table()) {
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has_table = true;
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}
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}
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if (OB_SUCC(ret) && has_table) {
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route_sql = pl_sql->get_sql();
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}
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return ret;
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}
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}
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}
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