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2021-05-31 22:56:52 +08:00
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src/sql/optimizer/ob_intersect_route_policy.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_OPT
#include "sql/optimizer/ob_intersect_route_policy.h"
#include "sql/optimizer/ob_replica_compare.h"
#include "sql/optimizer/ob_phy_table_location_info.h"
#include "sql/optimizer/ob_log_plan.h"
#include "storage/ob_partition_service.h"
using namespace oceanbase::common;
using namespace oceanbase::share;
using namespace oceanbase::storage;
namespace oceanbase {
namespace sql {
int ObIntersectRoutePolicy::init_candidate_replicas(
const ObList<common::ObAddr, ObArenaAllocator>& candidate_server_list,
common::ObIArray<CandidateReplica>& candi_replicas)
{
int ret = OB_SUCCESS;
if (OB_UNLIKELY(!is_inited_)) {
ret = OB_NOT_INIT;
LOG_WARN("not init", K(ret));
}
auto server_iter = candidate_server_list.begin();
CandidateReplica candi_replica;
for (; OB_SUCC(ret) && server_iter != candidate_server_list.end(); ++server_iter) {
candi_replica.replica_type_ = REPLICA_TYPE_MAX; // fixme: ignore replica type for mv
candi_replica.server_ = *server_iter;
if (OB_FAIL(init_candidate_replica(server_locality_array_, candi_replica))) {
LOG_WARN("fail to init candidate replica", K(server_locality_array_), K(candi_replica), K(ret));
} else if (OB_FAIL(candi_replicas.push_back(candi_replica))) {
LOG_WARN("fail to push back candi_replica", K(candi_replica), K(candi_replicas), K(ret));
}
}
return ret;
}
int ObIntersectRoutePolicy::select_replica_with_priority(const ObRoutePolicyCtx& route_policy_ctx,
const common::ObIArray<CandidateReplica>& replica_array,
common::ObIArray<ObPhyTableLocationInfo*>& phy_tbl_loc_info_list)
{
int ret = OB_SUCCESS;
bool has_found = false;
ObAddr selected_addr;
for (int64_t i = 0; OB_SUCC(ret) && !has_found && i < replica_array.count(); ++i) {
if (replica_array.at(i).is_usable()) {
selected_addr = replica_array.at(i).server_;
has_found = true;
}
}
if (OB_UNLIKELY(false == has_found)) {
int64_t select_idx = rand() % replica_array.count();
selected_addr = replica_array.at(select_idx).server_;
LOG_WARN("all replica is not usable currently", K(replica_array), K(route_policy_ctx), K(select_idx));
}
if (OB_FAIL(ret)) {
} else if (OB_FAIL(ObLogPlan::select_one_server(selected_addr, phy_tbl_loc_info_list))) {
LOG_WARN("fail to select one server", K(ret));
}
return ret;
}
} // namespace sql
} // namespace oceanbase