-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
CoreServerModule.java
208 lines (176 loc) · 11.1 KB
/
CoreServerModule.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.causalclustering.core.server;
import java.io.File;
import java.util.function.Supplier;
import org.neo4j.backup.OnlineBackupKernelExtension;
import org.neo4j.backup.OnlineBackupSettings;
import org.neo4j.causalclustering.ReplicationModule;
import org.neo4j.causalclustering.catchup.CatchUpClient;
import org.neo4j.causalclustering.catchup.CatchupServer;
import org.neo4j.causalclustering.catchup.CheckpointerSupplier;
import org.neo4j.causalclustering.catchup.storecopy.CopiedStoreRecovery;
import org.neo4j.causalclustering.catchup.storecopy.LocalDatabase;
import org.neo4j.causalclustering.catchup.storecopy.StoreCopyClient;
import org.neo4j.causalclustering.catchup.storecopy.StoreFetcher;
import org.neo4j.causalclustering.catchup.tx.TransactionLogCatchUpFactory;
import org.neo4j.causalclustering.catchup.tx.TxPullClient;
import org.neo4j.causalclustering.core.CausalClusteringSettings;
import org.neo4j.causalclustering.core.IdentityModule;
import org.neo4j.causalclustering.core.consensus.ConsensusModule;
import org.neo4j.causalclustering.core.consensus.ContinuousJob;
import org.neo4j.causalclustering.core.consensus.RaftMessages;
import org.neo4j.causalclustering.core.consensus.RaftServer;
import org.neo4j.causalclustering.core.consensus.log.pruning.PruningScheduler;
import org.neo4j.causalclustering.core.consensus.membership.LeaderCommitWaiter;
import org.neo4j.causalclustering.core.consensus.membership.MembershipWaiter;
import org.neo4j.causalclustering.core.consensus.membership.MembershipWaiterLifecycle;
import org.neo4j.causalclustering.core.consensus.membership.ThreadSleeper;
import org.neo4j.causalclustering.core.state.ClusteringModule;
import org.neo4j.causalclustering.core.state.CommandApplicationProcess;
import org.neo4j.causalclustering.core.state.CoreState;
import org.neo4j.causalclustering.core.state.CoreStateApplier;
import org.neo4j.causalclustering.core.state.LongIndexMarshal;
import org.neo4j.causalclustering.core.state.machines.CoreStateMachinesModule;
import org.neo4j.causalclustering.core.state.snapshot.CoreStateDownloader;
import org.neo4j.causalclustering.core.state.storage.DurableStateStorage;
import org.neo4j.causalclustering.core.state.storage.StateStorage;
import org.neo4j.causalclustering.identity.MemberId;
import org.neo4j.causalclustering.logging.MessageLogger;
import org.neo4j.causalclustering.messaging.CoreReplicatedContentMarshal;
import org.neo4j.causalclustering.messaging.LoggingInbound;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.kernel.NeoStoreDataSource;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.factory.PlatformModule;
import org.neo4j.kernel.impl.logging.LogService;
import org.neo4j.kernel.impl.transaction.log.LogicalTransactionStore;
import org.neo4j.kernel.impl.transaction.log.TransactionIdStore;
import org.neo4j.kernel.impl.transaction.state.DataSourceManager;
import org.neo4j.kernel.impl.util.Dependencies;
import org.neo4j.kernel.impl.util.JobScheduler;
import org.neo4j.kernel.internal.DatabaseHealth;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.logging.LogProvider;
import org.neo4j.time.Clocks;
import static org.neo4j.kernel.impl.util.JobScheduler.SchedulingStrategy.NEW_THREAD;
public class CoreServerModule
{
public static final String CLUSTER_ID_NAME = "cluster-id";
public static final String LAST_FLUSHED_NAME = "last-flushed";
public final MembershipWaiterLifecycle membershipWaiterLifecycle;
public CoreServerModule( IdentityModule identityModule, final PlatformModule platformModule, ConsensusModule consensusModule,
CoreStateMachinesModule coreStateMachinesModule, ReplicationModule replicationModule,
File clusterStateDirectory, ClusteringModule clusteringModule,
LocalDatabase localDatabase, MessageLogger<MemberId> messageLogger, Supplier<DatabaseHealth> dbHealthSupplier )
{
final Dependencies dependencies = platformModule.dependencies;
final Config config = platformModule.config;
final LogService logging = platformModule.logging;
final FileSystemAbstraction fileSystem = platformModule.fileSystem;
final LifeSupport life = platformModule.life;
final Monitors monitors = platformModule.monitors;
final JobScheduler jobScheduler = platformModule.jobScheduler;
LogProvider logProvider = logging.getInternalLogProvider();
LogProvider userLogProvider = logging.getUserLogProvider();
final Supplier<DatabaseHealth> databaseHealthSupplier = dependencies.provideDependency( DatabaseHealth.class );
StateStorage<Long> lastFlushedStorage;
lastFlushedStorage = life.add(
new DurableStateStorage<>( fileSystem, clusterStateDirectory, LAST_FLUSHED_NAME,
new LongIndexMarshal(), config.get( CausalClusteringSettings.last_flushed_state_size ),
logProvider ) );
consensusModule.raftMembershipManager().setRecoverFromIndexSupplier( lastFlushedStorage::getInitialState );
RaftServer raftServer =
new RaftServer( new CoreReplicatedContentMarshal(), config, logProvider, userLogProvider, monitors );
LoggingInbound<RaftMessages.ClusterIdAwareMessage> loggingRaftInbound =
new LoggingInbound<>( raftServer, messageLogger, identityModule.myself() );
long inactivityTimeoutMillis = config.get( CausalClusteringSettings.catch_up_client_inactivity_timeout );
CatchUpClient catchUpClient = life.add( new CatchUpClient( clusteringModule.topologyService(), logProvider,
Clocks.systemClock(), inactivityTimeoutMillis, monitors ) );
StoreFetcher storeFetcher = new StoreFetcher( logProvider, fileSystem, platformModule.pageCache,
new StoreCopyClient( catchUpClient ), new TxPullClient( catchUpClient, platformModule.monitors ),
new TransactionLogCatchUpFactory() );
CoreStateApplier coreStateApplier = new CoreStateApplier( logProvider );
CopiedStoreRecovery copiedStoreRecovery = new CopiedStoreRecovery( config,
platformModule.kernelExtensions.listFactories(), platformModule.pageCache );
LifeSupport servicesToStopOnStoreCopy = new LifeSupport();
CoreStateDownloader downloader =
new CoreStateDownloader( platformModule.fileSystem, localDatabase, servicesToStopOnStoreCopy,
storeFetcher, catchUpClient, logProvider, copiedStoreRecovery );
if ( config.get( OnlineBackupSettings.online_backup_enabled ) )
{
platformModule.dataSourceManager.addListener( new DataSourceManager.Listener()
{
@Override
public void registered( NeoStoreDataSource dataSource )
{
servicesToStopOnStoreCopy.add( pickBackupExtension( dataSource ) );
}
@Override
public void unregistered( NeoStoreDataSource dataSource )
{
servicesToStopOnStoreCopy.remove( pickBackupExtension( dataSource ) );
}
private OnlineBackupKernelExtension pickBackupExtension( NeoStoreDataSource dataSource )
{
return dataSource.getDependencyResolver().resolveDependency( OnlineBackupKernelExtension.class );
}
} );
}
CommandApplicationProcess commandApplicationProcess =
new CommandApplicationProcess( coreStateMachinesModule.coreStateMachines, consensusModule.raftLog(),
config.get( CausalClusteringSettings.state_machine_apply_max_batch_size ),
config.get( CausalClusteringSettings.state_machine_flush_window_size ), databaseHealthSupplier,
logProvider, replicationModule.getProgressTracker(), lastFlushedStorage,
replicationModule.getSessionTracker(), coreStateApplier, consensusModule.inFlightMap(),
platformModule.monitors );
CoreState coreState =
new CoreState( consensusModule.raftMachine(), localDatabase, clusteringModule.clusterIdentity(),
logProvider, downloader, commandApplicationProcess );
dependencies.satisfyDependency( coreState );
life.add( new PruningScheduler( coreState, jobScheduler,
config.get( CausalClusteringSettings.raft_log_pruning_frequency ), logProvider ) );
int queueSize = config.get( CausalClusteringSettings.raft_in_queue_size );
int maxBatch = config.get( CausalClusteringSettings.raft_in_queue_max_batch );
BatchingMessageHandler batchingMessageHandler =
new BatchingMessageHandler( coreState, queueSize, maxBatch, logProvider );
long electionTimeout = config.get( CausalClusteringSettings.leader_election_timeout );
MembershipWaiter membershipWaiter =
new MembershipWaiter( identityModule.myself(), jobScheduler, dbHealthSupplier, electionTimeout * 4,
new LeaderCommitWaiter( new ThreadSleeper() ), logProvider );
long joinCatchupTimeout = config.get( CausalClusteringSettings.join_catch_up_timeout );
membershipWaiterLifecycle = new MembershipWaiterLifecycle( membershipWaiter,
joinCatchupTimeout, consensusModule.raftMachine(), logProvider );
loggingRaftInbound.registerHandler( batchingMessageHandler );
CatchupServer catchupServer = new CatchupServer( logProvider, userLogProvider, localDatabase::storeId,
platformModule.dependencies.provideDependency( TransactionIdStore.class ),
platformModule.dependencies.provideDependency( LogicalTransactionStore.class ),
localDatabase::dataSource, localDatabase::isAvailable, coreState, config,
platformModule.monitors, new CheckpointerSupplier( platformModule.dependencies ) );
servicesToStopOnStoreCopy.add( catchupServer );
life.add( raftServer );
life.add( catchupServer );
life.add( batchingMessageHandler );
life.add( new ContinuousJob( jobScheduler, new JobScheduler.Group( "raft-batch-handler", NEW_THREAD ),
batchingMessageHandler, logProvider ) );
life.add( coreState );
}
}