org.springframework.integration.ip.tcp.connection.TcpConnectionInterceptorSupport.java Source code

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Here is the source code for org.springframework.integration.ip.tcp.connection.TcpConnectionInterceptorSupport.java

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/*
 * Copyright 2002-2019 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.integration.ip.tcp.connection;

import javax.net.ssl.SSLSession;

import org.springframework.context.ApplicationEventPublisher;
import org.springframework.core.serializer.Deserializer;
import org.springframework.core.serializer.Serializer;
import org.springframework.messaging.Message;
import org.springframework.messaging.support.ErrorMessage;

/**
 * Base class for TcpConnectionIntercepters; passes all method calls through
 * to the underlying {@link TcpConnection}.
 *
 * @author Gary Russell
 * @since 2.0
 */
public abstract class TcpConnectionInterceptorSupport extends TcpConnectionSupport
        implements TcpConnectionInterceptor {

    private TcpConnectionSupport theConnection;

    private TcpListener tcpListener;

    private TcpSender tcpSender;

    private Boolean realSender;

    public TcpConnectionInterceptorSupport() {
        super();
    }

    public TcpConnectionInterceptorSupport(ApplicationEventPublisher applicationEventPublisher) {
        super(applicationEventPublisher);
    }

    @Override
    public void close() {
        this.theConnection.close();
    }

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

    @Override
    public Object getPayload() {
        return this.theConnection.getPayload();
    }

    @Override
    public String getHostName() {
        return this.theConnection.getHostName();
    }

    @Override
    public String getHostAddress() {
        return this.theConnection.getHostAddress();
    }

    @Override
    public int getPort() {
        return this.theConnection.getPort();
    }

    @Override
    public Object getDeserializerStateKey() {
        return this.theConnection.getDeserializerStateKey();
    }

    @Override
    public void registerListener(TcpListener listener) {
        this.tcpListener = listener;
        this.theConnection.registerListener(this);
    }

    @Override
    public void registerSender(TcpSender sender) {
        this.tcpSender = sender;
        this.theConnection.registerSender(this);
    }

    @Override
    public String getConnectionId() {
        return this.theConnection.getConnectionId();
    }

    @Override
    public SocketInfo getSocketInfo() {
        return this.theConnection.getSocketInfo();
    }

    @Override
    public String getConnectionFactoryName() {
        return this.theConnection.getConnectionFactoryName();
    }

    @Override
    public void run() {
        this.theConnection.run();
    }

    @Override
    public void setMapper(TcpMessageMapper mapper) {
        this.theConnection.setMapper(mapper);
    }

    @Override
    public Deserializer<?> getDeserializer() {
        return this.theConnection.getDeserializer();
    }

    @Override
    public void setDeserializer(Deserializer<?> deserializer) {
        this.theConnection.setDeserializer(deserializer);
    }

    @Override
    public Serializer<?> getSerializer() {
        return this.theConnection.getSerializer();
    }

    @Override
    public void setSerializer(Serializer<?> serializer) {
        this.theConnection.setSerializer(serializer);
    }

    @Override
    public boolean isServer() {
        return this.theConnection.isServer();
    }

    @Override
    public SSLSession getSslSession() {
        return this.theConnection.getSslSession();
    }

    @Override
    public boolean onMessage(Message<?> message) {
        if (this.tcpListener == null) {
            if (message instanceof ErrorMessage) {
                return false;
            } else {
                throw new NoListenerException("No listener registered for message reception");
            }
        }
        return this.tcpListener.onMessage(message);
    }

    @Override
    public void send(Message<?> message) {
        this.theConnection.send(message);
    }

    /**
     * Returns the underlying connection (or next interceptor)
     * @return the connection
     */
    public TcpConnectionSupport getTheConnection() {
        return this.theConnection;
    }

    /**
     * Sets the underlying connection (or next interceptor)
     * @param theConnection the connection
     */
    public void setTheConnection(TcpConnectionSupport theConnection) {
        this.theConnection = theConnection;
    }

    /**
     * @return the listener
     */
    @Override
    public TcpListener getListener() {
        return this.tcpListener;
    }

    @Override
    public void addNewConnection(TcpConnection connection) {
        if (this.tcpSender != null) {
            this.tcpSender.addNewConnection(this);
        }
    }

    @Override
    public void removeDeadConnection(TcpConnection connection) {
        if (this.tcpSender != null) {
            this.tcpSender.removeDeadConnection(this);
        }
    }

    @Override
    public long incrementAndGetConnectionSequence() {
        return this.theConnection.incrementAndGetConnectionSequence();
    }

    @Override
    public TcpSender getSender() {
        return this.tcpSender;
    }

    protected boolean hasRealSender() {
        if (this.realSender != null) {
            return this.realSender;
        }
        TcpSender sender = this.getSender();
        while (sender instanceof TcpConnectionInterceptorSupport) {
            sender = ((TcpConnectionInterceptorSupport) sender).getSender();
        }
        this.realSender = sender != null;
        return this.realSender;
    }

}