io.fabric8.mq.protocol.stomp.StompProtocol Maven / Gradle / Ivy

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/*
 *
 *  * Copyright 2005-2015 Red Hat, Inc.
 *  * Red Hat licenses this file to you 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 io.fabric8.mq.protocol.stomp;

import io.fabric8.mq.protocol.ProtocolDetector;
import io.fabric8.mq.util.ConnectionParameters;
import io.fabric8.mq.util.SocketWrapper;
import org.apache.activemq.transport.stomp.Stomp;
import org.apache.activemq.transport.stomp.StompFrame;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.vertx.java.core.Handler;
import org.vertx.java.core.buffer.Buffer;

import java.util.Map;

public class StompProtocol implements ProtocolDetector {
    public static final int maxCommandLength = 20;
    private static final transient Logger LOG = LoggerFactory.getLogger(StompProtocol.class);
    private static final String[] SCHEMES = new String[]{"stomp", "stomp+nio"};
    public int maxHeaderLength = 1024 * 10;
    public int maxHeaders = 1000;
    public int maxDataLength = 1024 * 1024 * 100;

    @Override
    public String getProtocolName() {
        return "stomp";
    }

    @Override
    public String[] getProtocolSchemes() {
        return SCHEMES;
    }

    public int getMaxIdentificationLength() {
        return 10;
    }

    @Override
    public boolean matches(Buffer buffer) {
        String header = buffer.toString();
        return header.startsWith(Stomp.Commands.CONNECT) ||
                   header.startsWith(Stomp.Commands.STOMP);
    }

    @Override
    public void snoopConnectionParameters(final SocketWrapper socket, Buffer received, final Handler handler) {

        StompProtocolDecoder h = new StompProtocolDecoder(this);
        h.errorHandler(new Handler() {
            @Override
            public void handle(String error) {
                LOG.info("STOMP protocol decoding error: " + error);
                socket.close();
            }
        });
        h.codecHandler(new Handler() {
            @Override
            public void handle(StompFrame event) {
                if (event.getAction().equals(Stomp.Commands.CONNECT) || event.getAction().equals(Stomp.Commands.STOMP)) {
                    Map headers = event.getHeaders();
                    ConnectionParameters parameters = new ConnectionParameters();
                    if (headers != null) {
                        parameters.protocolVirtualHost = headers.get("host");
                        parameters.protocolUser = headers.get("JMSXUserID");
                        parameters.protocolClientId = headers.get("client-id");
                    }
                    handler.handle(parameters);
                } else {
                    LOG.info("Expected a CONNECT or STOMP frame");
                    socket.close();
                }
            }
        });
        socket.readStream().dataHandler(h);
        h.handle(received);
    }

}