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Access to the Neo4j graph database through Java
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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.neo4j.driver.internal.async.connection;

import java.util.concurrent.CompletionStage;

import org.neo4j.driver.AccessMode;
import org.neo4j.driver.internal.BoltServerAddress;
import org.neo4j.driver.internal.DatabaseName;
import org.neo4j.driver.internal.RoutingErrorHandler;
import org.neo4j.driver.internal.handlers.RoutingResponseHandler;
import org.neo4j.driver.internal.messaging.BoltProtocol;
import org.neo4j.driver.internal.messaging.Message;
import org.neo4j.driver.internal.spi.Connection;
import org.neo4j.driver.internal.spi.ResponseHandler;
import org.neo4j.driver.internal.util.ServerVersion;

/**
 * A connection used by the routing driver.
 */
public class RoutingConnection implements Connection
{
    private final Connection delegate;
    private final AccessMode accessMode;
    private final RoutingErrorHandler errorHandler;
    private final DatabaseName databaseName;
    private final String impersonatedUser;

    public RoutingConnection( Connection delegate, DatabaseName databaseName, AccessMode accessMode, String impersonatedUser, RoutingErrorHandler errorHandler )
    {
        this.delegate = delegate;
        this.databaseName = databaseName;
        this.accessMode = accessMode;
        this.impersonatedUser = impersonatedUser;
        this.errorHandler = errorHandler;
    }

    @Override
    public void enableAutoRead()
    {
        delegate.enableAutoRead();
    }

    @Override
    public void disableAutoRead()
    {
        delegate.disableAutoRead();
    }

    @Override
    public void write( Message message, ResponseHandler handler )
    {
        delegate.write( message, newRoutingResponseHandler( handler ) );
    }

    @Override
    public void write( Message message1, ResponseHandler handler1, Message message2, ResponseHandler handler2 )
    {
        delegate.write( message1, newRoutingResponseHandler( handler1 ), message2, newRoutingResponseHandler( handler2 ) );
    }

    @Override
    public void writeAndFlush( Message message, ResponseHandler handler )
    {
        delegate.writeAndFlush( message, newRoutingResponseHandler( handler ) );
    }

    @Override
    public void writeAndFlush( Message message1, ResponseHandler handler1, Message message2, ResponseHandler handler2 )
    {
        delegate.writeAndFlush( message1, newRoutingResponseHandler( handler1 ), message2, newRoutingResponseHandler( handler2 ) );
    }

    @Override
    public CompletionStage reset()
    {
        return delegate.reset();
    }

    @Override
    public boolean isOpen()
    {
        return delegate.isOpen();
    }

    @Override
    public CompletionStage release()
    {
        return delegate.release();
    }

    @Override
    public void terminateAndRelease( String reason )
    {
        delegate.terminateAndRelease( reason );
    }

    @Override
    public String serverAgent()
    {
        return delegate.serverAgent();
    }

    @Override
    public BoltServerAddress serverAddress()
    {
        return delegate.serverAddress();
    }

    @Override
    public ServerVersion serverVersion()
    {
        return delegate.serverVersion();
    }

    @Override
    public BoltProtocol protocol()
    {
        return delegate.protocol();
    }

    @Override
    public void flush()
    {
        delegate.flush();
    }

    @Override
    public AccessMode mode()
    {
        return this.accessMode;
    }

    @Override
    public DatabaseName databaseName()
    {
        return this.databaseName;
    }

    @Override
    public String impersonatedUser()
    {
        return impersonatedUser;
    }

    private RoutingResponseHandler newRoutingResponseHandler( ResponseHandler handler )
    {
        return new RoutingResponseHandler( handler, serverAddress(), accessMode, errorHandler );
    }
}