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The core of Neo4j Bolt Protocol, this contains the state machine for Bolt sessions.
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/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [https://neo4j.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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see requestMessageStructRegistry;
private final StructRegistry responseMessageStructRegistry;
protected AbstractBoltProtocol() {
this.stateMachine = this.createStateMachine().build();
this.requestMessageStructRegistry = this.createRequestMessageRegistry().build();
this.responseMessageStructRegistry =
this.createResponseMessageRegistry().build();
}
@Override
public final StructRegistry requestMessageRegistry() {
return this.requestMessageStructRegistry;
}
@Override
public final StructRegistry responseMessageRegistry() {
return this.responseMessageStructRegistry;
}
@Override
public StateMachineConfiguration stateMachine() {
return this.stateMachine;
}
protected StateMachineConfiguration.Factory createStateMachine() {
return StateMachineConfiguration.builder()
.withInitialState(States.NEGOTIATION, HelloStateTransition.getInstance())
.withState(
States.AUTHENTICATION,
AuthenticationStateTransition.getInstance()
.also(AppendAdvertisedAddressOnStateTransition.getInstance()))
.withState(
States.READY,
ResolveHomeDatabaseStateTransition.getInstanceForBegin()
.andThen(CreateTransactionStateTransition.getInstance()),
RouteStateTransition.getInstance(),
ResolveHomeDatabaseStateTransition.getInstanceForAutoCommit()
.andThen(CreateAutocommitStatementStateTransition.getInstance()),
LogoffStateTransition.getInstance(),
TelemetryStateTransition.getInstance())
.withState(
States.AUTO_COMMIT,
AutocommitDiscardStreamingStateTransition.getInstance(),
AutocommitPullStreamingStateTransition.getInstance())
.withState(
States.IN_TRANSACTION,
CreateStatementStateTransition.getInstance(),
DiscardResultsStreamingStateTransition.getInstance(),
PullResultsStreamingStateTransition.getInstance(),
CommitTransactionalStateTransition.getInstance(),
RollbackTransactionalStateTransition.getInstance());
}
protected StructRegistry.Builder createRequestMessageRegistry() {
return StructRegistry.builder()
// Authentication
.register(DefaultHelloMessageDecoder.getInstance())
.register(DefaultLogonMessageDecoder.getInstance())
.register(DefaultLogoffMessageDecoder.getInstance())
// Connection
.register(DefaultGoodbyeMessageDecoder.getInstance())
.register(DefaultResetMessageDecoder.getInstance())
.register(DefaultRouteMessageDecoder.getInstance())
// Streaming
.register(DefaultDiscardMessageDecoder.getInstance())
.register(DefaultPullMessageDecoder.getInstance())
// Transaction
.register(DefaultBeginMessageDecoder.getInstance())
.register(DefaultCommitMessageDecoder.getInstance())
.register(DefaultRollbackMessageDecoder.getInstance())
.register(DefaultRunMessageDecoder.getInstance())
// Generic
.register(TelemetryMessageDecoder.getInstance());
}
protected StructRegistry.Builder createResponseMessageRegistry() {
return StructRegistry.builder()
.register(FailureMessageEncoder.getInstance())
.register(IgnoredMessageEncoder.getInstance())
.register(SuccessMessageEncoder.getInstance());
}
@Override
public String toString() {
return this.version().toString();
}
}
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