content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF 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 org.apache.activemq.transport.netty;
  
  import java.net.URI;
  import java.util.Map;
  
  import org.apache.activemq.transport.amqp.client.util.PropertyUtil;
  
  /**
   * Factory for creating the Netty based TCP Transport.
   */
  public final class NettyTransportFactory {
  
     private NettyTransportFactory() {
     }
  
     /**
      * Creates an instance of the given Transport and configures it using the properties set on the given remote broker
      * URI.
      *
      * @param remoteURI The URI used to connect to a remote Peer.
      * @return a new Transport instance
      * @throws Exception if an error occurs while creating the Transport instance.
      */
     public static NettyTransport createTransport(URI remoteURI) throws Exception {
        Map<String, String> map = PropertyUtil.parseQuery(remoteURI.getQuery());
        Map<String, String> transportURIOptions = PropertyUtil.filterProperties(map, "transport.");
        NettyTransportOptions transportOptions = null;
  
        remoteURI = PropertyUtil.replaceQuery(remoteURI, map);
  
        if (!remoteURI.getScheme().equalsIgnoreCase("ssl") && !remoteURI.getScheme().equalsIgnoreCase("wss")) {
           transportOptions = NettyTransportOptions.INSTANCE.clone();
        } else {
           transportOptions = NettyTransportSslOptions.INSTANCE.clone();
        }
  
        Map<String, String> unused = PropertyUtil.setProperties(transportOptions, transportURIOptions);
        if (!unused.isEmpty()) {
           String msg = " Not all transport options could be set on the TCP based" +
              " Transport. Check the options are spelled correctly." +
              " Unused parameters=[" + unused + "]." +
              " This provider instance cannot be started.";
           throw new IllegalArgumentException(msg);
        }
  
        NettyTransport result = null;
  
        String scheme = remoteURI.getScheme().toLowerCase();
        if (scheme.startsWith("tcp") || scheme.startsWith("ssl")) {
           result = new NettyTcpTransport(remoteURI, transportOptions);
        } else if (scheme.startsWith("ws") || scheme.startsWith("wss")) {
           // Check for ws subprotocol
           if (scheme.contains("+")) {
              transportOptions.setWsSubProtocol(scheme.substring(scheme.indexOf("+") + 1));
           }
           result = new NettyWSTransport(remoteURI, transportOptions);
        } else {
           throw new IllegalArgumentException("Invalid URI Scheme: " + remoteURI.getScheme());
        }
        return result;
     }
  }
  