330 lines
12 KiB
C++
330 lines
12 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 "common/ob_role.h"
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#include "lib/list/ob_dlist.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 <chrono>
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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/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 <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 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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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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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)
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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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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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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", port + i);
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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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ObAddr(ObAddr::VER::IPV4, "127.0.0.1", port + index),
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1,
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[election](int64_t, const ObAddr &dest_addr) {
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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](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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}
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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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}
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}
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}
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int main(int argc, char **argv)
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{
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system("rm -rf test_ob_election_with_priority.log");
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oceanbase::palf::election::GLOBAL_INIT_ELECTION_MODULE();
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oceanbase::unittest::MockNetService::init();
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oceanbase::palf::election::INIT_TS = 0;
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oceanbase::common::ObClockGenerator::init();
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oceanbase::common::ObLogger &logger = oceanbase::common::ObLogger::get_logger();
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oceanbase::share::ObTenantBase tenant_base(OB_SYS_TENANT_ID);
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tenant_base.init();
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oceanbase::share::ObTenantEnv::set_tenant(&tenant_base);
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logger.set_file_name("test_ob_election_with_priority.log", false);
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logger.set_log_level(OB_LOG_LEVEL_INFO);
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testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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