528 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			528 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
// Copyright (c) 2021 OceanBase
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// OceanBase 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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#include <gtest/gtest.h>
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#include <gmock/gmock.h>
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#define private public
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#define protected public
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#include "logservice/leader_coordinator/ob_failure_detector.h"
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#include "common/ob_role.h"
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#include "lib/list/ob_dlist.h"
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#include "logservice/leader_coordinator/failure_event.h"
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#include "logservice/palf/election/interface/election_msg_handler.h"
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#include <algorithm>
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#include <atomic>
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#include <chrono>
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#include "logservice/palf/election/interface/election.h"
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#include "logservice/palf/log_meta_info.h"
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#define UNITTEST
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#include "logservice/palf/election/utils/election_common_define.h"
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#include "logservice/palf/election/algorithm/election_impl.h"
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#include "logservice/leader_coordinator/election_priority_impl/election_priority_impl.h"
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#include "share/ob_occam_timer.h"
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#include "share/rc/ob_tenant_base.h"
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#include "mock_logservice_container/mock_election_user.h"
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#include "observer/ob_server.h"
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#include <iostream>
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#include <vector>
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using namespace oceanbase::obrpc;
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using namespace std;
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#define SUCC_(stmt) ASSERT_EQ((stmt), OB_SUCCESS)
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#define FAIL_(stmt) ASSERT_EQ((stmt), OB_FAIL)
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#define TRUE_(stmt) ASSERT_EQ((stmt), true)
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#define FALSE_(stmt) ASSERT_EQ((stmt), false)
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namespace oceanbase
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{
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namespace palf
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{
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namespace election
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{
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int EventRecorder::report_event_(ElectionEventType, const common::ObString &)
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{
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  return OB_SUCCESS;
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}
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}
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}
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namespace logservice
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{
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namespace coordinator
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{
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int PriorityV0::refresh_(const share::ObLSID &)
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{
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  return OB_SUCCESS;
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}
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int PriorityV1::refresh_(const share::ObLSID &)
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{
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  return OB_SUCCESS;
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}
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}
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}
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namespace unittest {
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using namespace common;
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using namespace palf::election;
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using namespace std;
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using namespace logservice::coordinator;
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int64_t MSG_DELAY = 1_ms;
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std::atomic_int leader_takeover_times(0);
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std::atomic_int leader_revoke_times(0);
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std::atomic_int devote_to_be_leader_count(0);
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std::atomic_int lease_expired_to_be_follower_count(0);
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std::atomic_int change_leader_to_be_leader_count(0);
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std::atomic_int change_leader_to_be_follower_count(0);
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std::atomic_int stop_to_be_follower_count(0);
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std::atomic_bool change_leader_from_prepare_change_leader_cb(false);
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MockNetService GlobalNetService;
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ObOccamThreadPool thread_pool;
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ObOccamTimer timer;
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void reset_global_status()
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{
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  leader_takeover_times = 0;
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  leader_revoke_times = 0;
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  devote_to_be_leader_count = 0;
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  lease_expired_to_be_follower_count = 0;
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  change_leader_to_be_leader_count = 0;
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  change_leader_to_be_follower_count = 0;
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  stop_to_be_follower_count = 0;
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}
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class TestElectionWithPriority : public ::testing::Test {
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public:
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  TestElectionWithPriority() {}
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  ~TestElectionWithPriority() {}
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  virtual void SetUp() {
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    MAX_TST = 100_ms;
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    change_leader_from_prepare_change_leader_cb = false;
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    oceanbase::common::ObClusterVersion::get_instance().cluster_version_ = CLUSTER_VERSION_4_0_0_0;
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    share::ObTenantSwitchGuard guard;
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    guard.switch_to(OB_SYS_TENANT_ID);
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    GlobalNetService.clear();
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    reset_global_status();
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    new(&thread_pool) ObOccamThreadPool();
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    new(&timer) ObOccamTimer();
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    thread_pool.init_and_start(5);
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    timer.init_and_start(thread_pool, 1_ms, "timer");
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  }
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  virtual void TearDown() { timer.~ObOccamTimer(); thread_pool.~ObOccamThreadPool(); }
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};
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template <typename TAKEOVER_OP>
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vector<ElectionImpl *> create_election_group(vector<ElectionPriorityImpl> &v_pri, TAKEOVER_OP &&op, const vector<int> &v_port = {})
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{
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  vector<ElectionImpl *> v;
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  int election_num = v_pri.size();
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  MemberList member_list;
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  ObArray<ObAddr> addr_list;
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  static int port = 1;
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  if (v_port.empty())
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    for (int i = 0; i < election_num; ++i)
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      addr_list.push_back(ObAddr(ObAddr::VER::IPV4, "127.0.0.1", port + i));
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  else
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    for (int port : v_port)
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      addr_list.push_back(ObAddr(ObAddr::VER::IPV4, "127.0.0.1", port));
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  palf::LogConfigVersion version;
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  version.proposal_id_ = 1;
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  version.config_seq_ = 1;
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  member_list.set_new_member_list(addr_list, version, election_num);
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  int ret = OB_SUCCESS;
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  for (int i = 0; i < election_num; ++i) {
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    ElectionImpl *election = new ElectionImpl();
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    election->self_addr_ = ObAddr(ObAddr::VER::IPV4, "127.0.0.1", addr_list[i].port_);
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    v.push_back(election);
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  }
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  for (auto &election_1 : v) {
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    for (auto &election_2 : v) {
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      GlobalNetService.connect(election_1, election_2);
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    }
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  }
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  int index = 0;
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  for (auto &election : v) {
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    ret = election->init_and_start(
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      1,
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      &timer,
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      &GlobalNetService,
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      election->self_addr_,
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      true,
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      1,
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      [election](int64_t, const ObAddr &dest_addr) {
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        change_leader_from_prepare_change_leader_cb = true;
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        THREAD_POOL.commit_task_ignore_ret([election, dest_addr]() { election->change_leader_to(dest_addr); });
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        return OB_SUCCESS;
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      },
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      [op, ret](Election *election, ObRole before, ObRole after, RoleChangeReason reason) {
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        if (before == ObRole::FOLLOWER && after == ObRole::LEADER) {
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          ELECT_LOG(INFO, "i become LEADER", K(obj_to_string(reason)), KPC(election));
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          op();
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        } else if (before == ObRole::LEADER && after == ObRole::FOLLOWER) {
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          ELECT_LOG(INFO, "i become FOLLOWER", K(obj_to_string(reason)), KPC(election));
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        } else {
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          ELECT_LOG(ERROR, "i don't know why call me");
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        }
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        switch (reason) {
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          case RoleChangeReason::DevoteToBeLeader:
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            devote_to_be_leader_count++;
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            leader_takeover_times++;
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            break;
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          case RoleChangeReason::LeaseExpiredToRevoke:
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            lease_expired_to_be_follower_count++;
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            leader_revoke_times++;
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            break;
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          case RoleChangeReason::ChangeLeaderToBeLeader:
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            change_leader_to_be_leader_count++;
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            leader_takeover_times++;
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            break;
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          case RoleChangeReason::ChangeLeaderToRevoke:
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            change_leader_to_be_follower_count++;
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            leader_revoke_times++;
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            break;
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          case RoleChangeReason::StopToRevoke:
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            stop_to_be_follower_count++;
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            leader_revoke_times++;
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            break;
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          default:
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            ELECT_LOG(ERROR, "should not go here");
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        }
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      }
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    );
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    assert(ret == OB_SUCCESS);
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    election->set_priority(&v_pri[index]);
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    ret = election->set_memberlist(member_list);
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    assert(ret == OB_SUCCESS);
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    index++;
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  }
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  port += election_num;
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  return v;
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}
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void init_pri(ElectionPriorityImpl &pri)
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{
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  pri.priority_tuple_.element<1>().is_valid_ = true;
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  pri.priority_tuple_.element<1>().is_primary_region_ = true;
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  pri.priority_tuple_.element<1>().scn_.set_base();
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  pri.priority_tuple_.element<1>().zone_priority_ = 0;
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}
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TEST_F(TestElectionWithPriority, elect_leader_because_primary_region_and_change_leader_bacause_zone_priority) {
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  vector<ElectionPriorityImpl> v_pri(3);
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  for (auto &pri : v_pri)
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    init_pri(pri);
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  v_pri[0].priority_tuple_.element<1>().is_primary_region_ = false;
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  auto election_group = create_election_group(v_pri, [](){});
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  this_thread::sleep_for(chrono::seconds(5));// 等待选出第一任Leader
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  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 1);
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  ASSERT_EQ(leader_revoke_times, 0);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 0);
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  ASSERT_EQ(change_leader_to_be_follower_count, 0);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  v_pri[1].priority_tuple_.element<1>().zone_priority_ = 1;// 1的zone priority会降低,Leader自动切换至2
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  this_thread::sleep_for(chrono::seconds(1));// 等待选出第二任Leader
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  ASSERT_EQ(election_group[2]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 2);
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  ASSERT_EQ(leader_revoke_times, 1);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 1);
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  ASSERT_EQ(change_leader_to_be_follower_count, 1);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  for (auto &election : election_group)
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    election->stop();
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  this_thread::sleep_for(chrono::seconds(1));
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  for (auto &election : election_group)
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    delete election;
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  ASSERT_EQ(leader_takeover_times, 2);
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  ASSERT_EQ(leader_revoke_times, 2);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 1);
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  ASSERT_EQ(change_leader_to_be_follower_count, 1);
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  ASSERT_EQ(stop_to_be_follower_count, 1);
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  ASSERT_EQ(change_leader_from_prepare_change_leader_cb, true);
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}
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TEST_F(TestElectionWithPriority, not_change_leader_because_follower_memership_version_not_update_enough_and_change_leader_later_when_follwer_membership_version_update_endough) {
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  vector<ElectionPriorityImpl> v_pri(3);
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  for (auto &pri : v_pri)
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    init_pri(pri);
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  auto election_group = create_election_group(v_pri, [](){});
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  // 0的IP-PORT最小,但因为membership version的原因,1会当选Leader
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  election_group[1]->proposer_.memberlist_with_states_.p_impl_->member_list_.membership_version_.config_seq_ += 1;
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  this_thread::sleep_for(chrono::seconds(5));// 等待选出第一任Leader
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  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 1);
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  ASSERT_EQ(leader_revoke_times, 0);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 0);
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  ASSERT_EQ(change_leader_to_be_follower_count, 0);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  // 0的membership version追上来了,但是并不会触发切主,尽管它的IP-PORT更小,但是优先级字段同Leader相同
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  election_group[0]->proposer_.memberlist_with_states_.p_impl_->member_list_.membership_version_.config_seq_ += 1;
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  this_thread::sleep_for(chrono::seconds(1));// 等待切主
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  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 1);
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  ASSERT_EQ(leader_revoke_times, 0);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 0);
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  ASSERT_EQ(change_leader_to_be_follower_count, 0);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  // 1的membership version再加1,同时让2的log_ts超过比较阈值
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  election_group[1]->proposer_.memberlist_with_states_.p_impl_->member_list_.membership_version_.config_seq_ += 1;
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  v_pri[2].priority_tuple_.element<1>().scn_.convert_for_logservice(100 * 1000 * 1000 * 1000L);// 此时并不会触发切主
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  this_thread::sleep_for(chrono::seconds(1));// 等待切主
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  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 1);
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  ASSERT_EQ(leader_revoke_times, 0);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 0);
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  ASSERT_EQ(change_leader_to_be_follower_count, 0);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  // 2的membership version追上Leader后触发切主
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  election_group[2]->proposer_.memberlist_with_states_.p_impl_->member_list_.membership_version_.config_seq_ += 2;
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  this_thread::sleep_for(chrono::seconds(1));// 等待切主
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  ASSERT_EQ(election_group[2]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 2);
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  ASSERT_EQ(leader_revoke_times, 1);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 1);
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  ASSERT_EQ(change_leader_to_be_follower_count, 1);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  for (auto &election : election_group)
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    election->stop();
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  this_thread::sleep_for(chrono::seconds(1));
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  for (auto &election : election_group)
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    delete election;
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  ASSERT_EQ(leader_takeover_times, 2);
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  ASSERT_EQ(leader_revoke_times, 2);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 1);
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  ASSERT_EQ(change_leader_to_be_follower_count, 1);
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  ASSERT_EQ(stop_to_be_follower_count, 1);
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  ASSERT_EQ(change_leader_from_prepare_change_leader_cb, true);
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}
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TEST_F(TestElectionWithPriority, meet_fatal_failure)
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{
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  vector<ElectionPriorityImpl> v_pri(3);
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  for (auto &pri : v_pri)
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    init_pri(pri);
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  v_pri[0].priority_tuple_.element<1>().zone_priority_ = 0;
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  v_pri[1].priority_tuple_.element<1>().zone_priority_ = 1;
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  v_pri[2].priority_tuple_.element<1>().zone_priority_ = 2;
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  auto election_group = create_election_group(v_pri, [](){});
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  this_thread::sleep_for(chrono::seconds(5));// 等待选出第一任Leader
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  ASSERT_EQ(election_group[0]->proposer_.role_, ObRole::LEADER);
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  ASSERT_EQ(leader_takeover_times, 1);
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  ASSERT_EQ(leader_revoke_times, 0);
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  ASSERT_EQ(devote_to_be_leader_count, 1);
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  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
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  ASSERT_EQ(change_leader_to_be_leader_count, 0);
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  ASSERT_EQ(change_leader_to_be_follower_count, 0);
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  ASSERT_EQ(stop_to_be_follower_count, 0);
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  FailureEvent event(FailureType::PROCESS_HANG, FailureModule::LOG, FailureLevel::FATAL);
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  event.set_info("test");
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  ASSERT_EQ(OB_SUCCESS, v_pri[0].priority_tuple_.element<1>().fatal_failures_.push_back(event));
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  ELECT_LOG(INFO, "add fatal failure");
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  this_thread::sleep_for(chrono::seconds(5));// 等待切主
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  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::LEADER);
 | 
						|
  ASSERT_EQ(leader_takeover_times, 2);
 | 
						|
  ASSERT_EQ(leader_revoke_times, 1);
 | 
						|
  ASSERT_EQ(devote_to_be_leader_count, 1);
 | 
						|
  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
 | 
						|
  ASSERT_EQ(change_leader_to_be_leader_count, 1);
 | 
						|
  ASSERT_EQ(change_leader_to_be_follower_count, 1);
 | 
						|
  ASSERT_EQ(stop_to_be_follower_count, 0);
 | 
						|
 | 
						|
  for (auto &election : election_group)
 | 
						|
    election->stop();
 | 
						|
  this_thread::sleep_for(chrono::seconds(1));
 | 
						|
  for (auto &election : election_group)
 | 
						|
    delete election;
 | 
						|
  ASSERT_EQ(change_leader_from_prepare_change_leader_cb, false);
 | 
						|
}
 | 
						|
}
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
namespace oceanbase
 | 
						|
{
 | 
						|
namespace palf
 | 
						|
{
 | 
						|
namespace election
 | 
						|
{
 | 
						|
uint64_t ElectionImpl::get_ls_biggest_min_cluster_version_ever_seen_() const// 让port=5555的副本认为自己是A副本
 | 
						|
{
 | 
						|
  #define PRINT_WRAPPER K(*this)
 | 
						|
  int ret = OB_SUCCESS;
 | 
						|
  uint64_t ls_biggest_min_cluster_version_ever_seen = 0;
 | 
						|
  //if (observer::ObServer::get_instance().is_arbitration_mode()) {
 | 
						|
  if (observer::ObServer::get_instance().is_arbitration_mode() || self_addr_.port_ == 5555) {
 | 
						|
    if (CLUSTER_CURRENT_VERSION < ls_biggest_min_cluster_version_ever_seen_.version_) {
 | 
						|
      ret = OB_ERR_UNEXPECTED;
 | 
						|
      LOG_NONE(ERROR, "ls_biggest_min_cluster_version_ever_seen_ less than arb binary version");
 | 
						|
    } else if (ls_biggest_min_cluster_version_ever_seen_.version_ == 0) {
 | 
						|
      LOG_NONE(WARN, "ls_biggest_min_cluster_version_ever_seen_ not setted yet");
 | 
						|
    }
 | 
						|
    ls_biggest_min_cluster_version_ever_seen = ls_biggest_min_cluster_version_ever_seen_.version_;
 | 
						|
  } else {
 | 
						|
    ls_biggest_min_cluster_version_ever_seen = std::max(GET_MIN_CLUSTER_VERSION(),
 | 
						|
                                                        ls_biggest_min_cluster_version_ever_seen_.version_);
 | 
						|
  }
 | 
						|
  return ls_biggest_min_cluster_version_ever_seen;
 | 
						|
  #undef PRINT_WRAPPER
 | 
						|
}
 | 
						|
}
 | 
						|
}
 | 
						|
namespace unittest
 | 
						|
{
 | 
						|
TEST_F(TestElectionWithPriority, arb_server_split_vote_cause_not_set_priority)// 复现仲裁bug场景
 | 
						|
{
 | 
						|
  // oceanbase::common::ObClusterVersion::get_instance().cluster_version_ = CLUSTER_VERSION_3_2_3_0;// 此时采用V0版本的优先级逻辑比较,投给IP
 | 
						|
  vector<ElectionPriorityImpl> v_pri(4);
 | 
						|
  for (auto &pri : v_pri)
 | 
						|
    init_pri(pri);
 | 
						|
  v_pri[0].priority_tuple_.element<1>().zone_priority_ = 3;//F
 | 
						|
  v_pri[1].priority_tuple_.element<1>().zone_priority_ = 2;//F
 | 
						|
  v_pri[2].priority_tuple_.element<1>().zone_priority_ = 1;//F
 | 
						|
  v_pri[3].priority_tuple_.element<1>().zone_priority_ = 0;//A
 | 
						|
  auto election_group = create_election_group(v_pri, [](){}, {1,2,3,5555/*仲裁*/});
 | 
						|
  election_group[0]->stop();// kill掉一个,还有2F1A
 | 
						|
  election_group[3]->set_inner_priority_seed(0ULL |  static_cast<uint64_t>(palf::election::PRIORITY_SEED_BIT::SEED_NOT_NORMOL_REPLICA_BIT));
 | 
						|
  election_group[3]->reset_priority();// 移除优先级,模拟A副本,会投票给IP最小的副本
 | 
						|
  this_thread::sleep_for(chrono::seconds(5));// 等待选出第一任Leader
 | 
						|
  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(election_group[2]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(election_group[3]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(leader_takeover_times, 0);
 | 
						|
  ASSERT_EQ(leader_revoke_times, 0);
 | 
						|
  ASSERT_EQ(devote_to_be_leader_count, 0);
 | 
						|
  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
 | 
						|
  ASSERT_EQ(change_leader_to_be_leader_count, 0);
 | 
						|
  ASSERT_EQ(change_leader_to_be_follower_count, 0);
 | 
						|
  ASSERT_EQ(stop_to_be_follower_count, 0);
 | 
						|
  for (auto &election : election_group)
 | 
						|
    election->stop();
 | 
						|
    this_thread::sleep_for(chrono::seconds(1));
 | 
						|
  for (auto &election : election_group)
 | 
						|
    delete election;
 | 
						|
}
 | 
						|
TEST_F(TestElectionWithPriority, arb_server_won_t_split_vote_cause_set_priority)// 测试修复后的行为
 | 
						|
{
 | 
						|
  oceanbase::common::ObClusterVersion::get_instance().cluster_version_ = CLUSTER_VERSION_3_2_3_0;// 此时采用V0版本的优先级逻辑比较,投给port_number_较大的副本
 | 
						|
  vector<ElectionPriorityImpl> v_pri(4);
 | 
						|
  for (auto &pri : v_pri)
 | 
						|
    init_pri(pri);
 | 
						|
  // 优先级V0
 | 
						|
  v_pri[0].priority_tuple_.element<0>().port_number_ = 3;//F
 | 
						|
  v_pri[1].priority_tuple_.element<0>().port_number_ = 2;//F
 | 
						|
  v_pri[2].priority_tuple_.element<0>().port_number_ = 1;//F
 | 
						|
  v_pri[3].priority_tuple_.element<0>().port_number_ = 0;//A
 | 
						|
  // 优先级V1
 | 
						|
  v_pri[0].priority_tuple_.element<1>().zone_priority_ = 3;//F
 | 
						|
  v_pri[1].priority_tuple_.element<1>().zone_priority_ = 2;//F
 | 
						|
  v_pri[2].priority_tuple_.element<1>().zone_priority_ = 1;//F
 | 
						|
  v_pri[3].priority_tuple_.element<1>().zone_priority_ = 0;//A
 | 
						|
  auto election_group = create_election_group(v_pri, [](){}, {1,2,3,5555/*仲裁*/});
 | 
						|
  election_group[0]->stop();// kill掉一个,还有2F1A
 | 
						|
  election_group[3]->set_inner_priority_seed(0ULL |  static_cast<uint64_t>(palf::election::PRIORITY_SEED_BIT::SEED_NOT_NORMOL_REPLICA_BIT));
 | 
						|
  this_thread::sleep_for(chrono::seconds(5));// 等待选出第一任Leader
 | 
						|
  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::LEADER);
 | 
						|
  ASSERT_EQ(election_group[2]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(election_group[3]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(leader_takeover_times, 1);
 | 
						|
  ASSERT_EQ(leader_revoke_times, 0);
 | 
						|
  ASSERT_EQ(devote_to_be_leader_count, 1);
 | 
						|
  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
 | 
						|
  ASSERT_EQ(change_leader_to_be_leader_count, 0);
 | 
						|
  ASSERT_EQ(change_leader_to_be_follower_count, 0);
 | 
						|
  ASSERT_EQ(stop_to_be_follower_count, 0);
 | 
						|
 | 
						|
  // 升级版本号
 | 
						|
  oceanbase::common::ObClusterVersion::get_instance().cluster_version_ = CLUSTER_VERSION_4_2_0_0;// 此时将根据V1版本的优先级,将leader切换至election 2
 | 
						|
  this_thread::sleep_for(chrono::seconds(2));// 等待执行切主
 | 
						|
  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(election_group[2]->proposer_.role_, ObRole::LEADER);
 | 
						|
  ASSERT_EQ(election_group[3]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(leader_takeover_times, 2);
 | 
						|
  ASSERT_EQ(leader_revoke_times, 1);
 | 
						|
  ASSERT_EQ(devote_to_be_leader_count, 1);
 | 
						|
  ASSERT_EQ(lease_expired_to_be_follower_count, 0);
 | 
						|
  ASSERT_EQ(change_leader_to_be_leader_count, 1);
 | 
						|
  ASSERT_EQ(change_leader_to_be_follower_count, 1);
 | 
						|
  ASSERT_EQ(stop_to_be_follower_count, 0);
 | 
						|
 | 
						|
  // 给leader断网,触发无主选举
 | 
						|
  GlobalNetService.disconnect_two_side(election_group[2], election_group[1]);
 | 
						|
  GlobalNetService.disconnect_two_side(election_group[2], election_group[3]);
 | 
						|
  this_thread::sleep_for(chrono::seconds(5));// 等待leader卸任
 | 
						|
 | 
						|
  // 恢复leader的网络,预期无主时,就算是仲裁副本也正确采用了V1版本的优先级
 | 
						|
  GlobalNetService.connect_two_side(election_group[2], election_group[1]);
 | 
						|
  GlobalNetService.connect_two_side(election_group[2], election_group[3]);
 | 
						|
  this_thread::sleep_for(chrono::seconds(5));// 等待无主选举
 | 
						|
 | 
						|
  ASSERT_EQ(election_group[1]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(election_group[2]->proposer_.role_, ObRole::LEADER);
 | 
						|
  ASSERT_EQ(election_group[3]->proposer_.role_, ObRole::FOLLOWER);
 | 
						|
  ASSERT_EQ(leader_takeover_times, 3);
 | 
						|
  ASSERT_EQ(leader_revoke_times, 2);
 | 
						|
  ASSERT_EQ(devote_to_be_leader_count, 2);
 | 
						|
  ASSERT_EQ(lease_expired_to_be_follower_count, 1);
 | 
						|
  ASSERT_EQ(change_leader_to_be_leader_count, 1);
 | 
						|
  ASSERT_EQ(change_leader_to_be_follower_count, 1);
 | 
						|
  ASSERT_EQ(stop_to_be_follower_count, 0);
 | 
						|
 | 
						|
  for (auto &election : election_group)
 | 
						|
    election->stop();
 | 
						|
    this_thread::sleep_for(chrono::seconds(1));
 | 
						|
  for (auto &election : election_group)
 | 
						|
    delete election;
 | 
						|
}
 | 
						|
}
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
 | 
						|
int main(int argc, char **argv)
 | 
						|
{
 | 
						|
  system("rm -rf test_ob_election_with_priority.log");
 | 
						|
  oceanbase::palf::election::GLOBAL_INIT_ELECTION_MODULE();
 | 
						|
  oceanbase::unittest::MockNetService::init();
 | 
						|
  oceanbase::palf::election::INIT_TS = 0;
 | 
						|
  oceanbase::common::ObClockGenerator::init();
 | 
						|
  oceanbase::common::ObLogger &logger = oceanbase::common::ObLogger::get_logger();
 | 
						|
  oceanbase::share::ObTenantBase tenant_base(OB_SYS_TENANT_ID);
 | 
						|
  tenant_base.init();
 | 
						|
  oceanbase::share::ObTenantEnv::set_tenant(&tenant_base);
 | 
						|
  logger.set_file_name("test_ob_election_with_priority.log", false);
 | 
						|
  logger.set_log_level(OB_LOG_LEVEL_INFO);
 | 
						|
  testing::InitGoogleTest(&argc, argv);
 | 
						|
  return RUN_ALL_TESTS();
 | 
						|
}
 |