use of org.neo4j.cluster.ProtocolServer in project neo4j by neo4j.
the class ClusterInstance method newCopy.
public ClusterInstance newCopy() {
// A very invasive method of cloning a protocol server. Nonetheless, since this is mostly an experiment at this
// point, it seems we can refactor later on to have a cleaner clone mechanism.
// Because state machines share state, and are simultaneously conceptually unaware of each other, implementing
// a clean snapshot mechanism is very hard. I've opted for having a dirty one here in the test code rather
// than introducing a hack into the runtime code.
ProverTimeouts timeoutsSnapshot = timeouts.snapshot();
InMemoryAcceptorInstanceStore snapshotAcceptorInstances = acceptorInstanceStore.snapshot();
ClusterInstanceOutput output = new ClusterInstanceOutput(uri);
ClusterInstanceInput input = new ClusterInstanceInput();
DelayedDirectExecutor executor = new DelayedDirectExecutor(logging);
ObjectStreamFactory objectStreamFactory = new ObjectStreamFactory();
MultiPaxosContext snapshotCtx = ctx.snapshot(logging, timeoutsSnapshot, executor, snapshotAcceptorInstances, objectStreamFactory, objectStreamFactory, new DefaultElectionCredentialsProvider(server.getServerId(), new StateVerifierLastTxIdGetter(), new MemberInfoProvider()));
List<StateMachine> snapshotMachines = new ArrayList<>();
for (StateMachine stateMachine : server.getStateMachines().getStateMachines()) {
snapshotMachines.add(snapshotStateMachine(logging, snapshotCtx, stateMachine));
}
ProtocolServer snapshotProtocolServer = factory.constructSupportingInfrastructureFor(server.getServerId(), input, output, executor, timeoutsSnapshot, stateMachineExecutor, snapshotCtx, snapshotMachines.toArray(new StateMachine[snapshotMachines.size()]));
return new ClusterInstance(stateMachineExecutor, logging, factory, snapshotProtocolServer, snapshotCtx, snapshotAcceptorInstances, timeoutsSnapshot, input, output, uri);
}
use of org.neo4j.cluster.ProtocolServer in project neo4j by neo4j.
the class ClusterInstance method newClusterInstance.
public static ClusterInstance newClusterInstance(InstanceId id, URI uri, Monitors monitors, ClusterConfiguration configuration, int maxSurvivableFailedMembers, LogProvider logging) {
MultiPaxosServerFactory factory = new MultiPaxosServerFactory(configuration, logging, monitors.newMonitor(StateMachines.Monitor.class));
ClusterInstanceInput input = new ClusterInstanceInput();
ClusterInstanceOutput output = new ClusterInstanceOutput(uri);
ObjectStreamFactory objStreamFactory = new ObjectStreamFactory();
ProverTimeouts timeouts = new ProverTimeouts(uri);
InMemoryAcceptorInstanceStore acceptorInstances = new InMemoryAcceptorInstanceStore();
Config config = mock(Config.class);
when(config.get(ClusterSettings.max_acceptors)).thenReturn(maxSurvivableFailedMembers);
DelayedDirectExecutor executor = new DelayedDirectExecutor(logging);
final MultiPaxosContext context = new MultiPaxosContext(id, Iterables.<ElectionRole, ElectionRole>iterable(new ElectionRole(ClusterConfiguration.COORDINATOR)), new ClusterConfiguration(configuration.getName(), logging, configuration.getMemberURIs()), executor, logging, objStreamFactory, objStreamFactory, acceptorInstances, timeouts, new DefaultElectionCredentialsProvider(id, new StateVerifierLastTxIdGetter(), new MemberInfoProvider()), config);
context.getClusterContext().setBoundAt(uri);
SnapshotContext snapshotContext = new SnapshotContext(context.getClusterContext(), context.getLearnerContext());
DelayedDirectExecutor taskExecutor = new DelayedDirectExecutor(logging);
ProtocolServer ps = factory.newProtocolServer(id, input, output, DIRECT_EXECUTOR, taskExecutor, timeouts, context, snapshotContext);
return new ClusterInstance(DIRECT_EXECUTOR, logging, factory, ps, context, acceptorInstances, timeouts, input, output, uri);
}
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