98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
/**
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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 SQL_ENG
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#include "sql/engine/expr/ob_expr_host_ip.h"
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#include "observer/ob_server_utils.h"
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#include "sql/session/ob_sql_session_info.h"
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#include "observer/ob_server_struct.h"
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using namespace oceanbase::common;
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using namespace oceanbase::observer;
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using namespace oceanbase::sql;
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namespace oceanbase
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{
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namespace sql
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{
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ObExprHostIP::ObExprHostIP(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_HOST_IP, N_HOST_IP, 0, NOT_VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprHostIP::~ObExprHostIP()
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{
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}
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int ObExprHostIP::calc_result_type0(ObExprResType &type, ObExprTypeCtx &type_ctx) const
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{
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int ret = OB_SUCCESS;
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type.set_varchar();
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type.set_length(MAX_IP_ADDR_LENGTH);
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if (is_oracle_mode()) {
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const ObSQLSessionInfo *session = type_ctx.get_session();
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if (OB_ISNULL(session)) {
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ret = OB_ERR_UNEXPECTED;
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SERVER_LOG(WARN, "session is null", K(ret));
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} else {
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type.set_collation_type(session->get_nls_collation());
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type.set_length_semantics(session->get_actual_nls_length_semantics());
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type.set_collation_level(CS_LEVEL_SYSCONST);
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}
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} else {
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const ObLengthSemantics default_length_semantics =
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(OB_NOT_NULL(type_ctx.get_session()) ?
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type_ctx.get_session()->get_actual_nls_length_semantics() : LS_BYTE);
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type.set_length_semantics(default_length_semantics);
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type.set_default_collation_type();
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type.set_collation_level(CS_LEVEL_SYSCONST);
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}
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return ret;
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}
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int ObExprHostIP::eval_host_ip(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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UNUSED(expr);
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char *buf = expr.get_str_res_mem(ctx, OB_IP_STR_BUFF);
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if (OB_ISNULL(buf)) {
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ret = OB_ERR_UNEXPECTED;
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SERVER_LOG(WARN, "buff is null", K(ret));
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} else {
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//see
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ObAddr addr = ObCurTraceId::get_addr();
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MEMSET(buf, 0, OB_IP_STR_BUFF);
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if (!addr.ip_to_string(buf, OB_IP_STR_BUFF)) {
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ret = OB_ERR_UNEXPECTED;
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SERVER_LOG(WARN, "ip to string failed", K(ret));
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} else {
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expr_datum.set_string(buf, strlen(buf));
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}
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}
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return ret;
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}
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int ObExprHostIP::cg_expr(ObExprCGCtx &op_cg_ctx, const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(raw_expr);
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UNUSED(op_cg_ctx);
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rt_expr.eval_func_ = ObExprHostIP::eval_host_ip;
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return OB_SUCCESS;
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}
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} // namespace sql
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} // namespace oceanbase
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