| /** |
| * 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.camel.component.ahc.ws; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.ExecutionException; |
| |
| import com.ning.http.client.AsyncHttpClient; |
| import com.ning.http.client.AsyncHttpClientConfig; |
| import com.ning.http.client.AsyncHttpProvider; |
| import com.ning.http.client.providers.grizzly.GrizzlyAsyncHttpProvider; |
| import com.ning.http.client.ws.WebSocket; |
| import com.ning.http.client.ws.WebSocketByteListener; |
| import com.ning.http.client.ws.WebSocketTextListener; |
| import com.ning.http.client.ws.WebSocketUpgradeHandler; |
| import org.apache.camel.Consumer; |
| import org.apache.camel.Processor; |
| import org.apache.camel.Producer; |
| import org.apache.camel.component.ahc.AhcEndpoint; |
| import org.apache.camel.spi.UriEndpoint; |
| import org.apache.camel.spi.UriParam; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @UriEndpoint(scheme = "ahc-ws,ahc-wss", title = "AHC Websocket,AHC Secure Websocket", syntax = "ahc-ws:httpUri", consumerClass = WsConsumer.class, label = "http,websocket") |
| public class WsEndpoint extends AhcEndpoint { |
| private static final transient Logger LOG = LoggerFactory.getLogger(WsEndpoint.class); |
| |
| // for using websocket streaming/fragments |
| private static final boolean GRIZZLY_AVAILABLE = |
| probeClass("com.ning.http.client.providers.grizzly.GrizzlyAsyncHttpProvider"); |
| |
| private final Set<WsConsumer> consumers = new HashSet<WsConsumer>(); |
| |
| private WebSocket websocket; |
| @UriParam |
| private boolean useStreaming; |
| |
| public WsEndpoint(String endpointUri, WsComponent component) { |
| super(endpointUri, component, null); |
| } |
| |
| private static boolean probeClass(String name) { |
| try { |
| Class.forName(name, true, WsEndpoint.class.getClassLoader()); |
| return true; |
| } catch (Throwable t) { |
| return false; |
| } |
| } |
| |
| @Override |
| public WsComponent getComponent() { |
| return (WsComponent) super.getComponent(); |
| } |
| |
| @Override |
| public Producer createProducer() throws Exception { |
| return new WsProducer(this); |
| } |
| |
| @Override |
| public Consumer createConsumer(Processor processor) throws Exception { |
| return new WsConsumer(this, processor); |
| } |
| |
| WebSocket getWebSocket() throws Exception { |
| synchronized (this) { |
| if (websocket == null) { |
| connect(); |
| } |
| } |
| return websocket; |
| } |
| |
| void setWebSocket(WebSocket websocket) { |
| this.websocket = websocket; |
| } |
| |
| public boolean isUseStreaming() { |
| return useStreaming; |
| } |
| |
| /** |
| * To enable streaming to send data as multiple text fragments. |
| */ |
| public void setUseStreaming(boolean useStreaming) { |
| this.useStreaming = useStreaming; |
| } |
| |
| @Override |
| protected AsyncHttpClient createClient(AsyncHttpClientConfig config) { |
| AsyncHttpClient client; |
| if (config == null) { |
| config = new AsyncHttpClientConfig.Builder().build(); |
| } |
| AsyncHttpProvider ahp = getAsyncHttpProvider(config); |
| if (ahp == null) { |
| client = new AsyncHttpClient(config); |
| } else { |
| client = new AsyncHttpClient(ahp, config); |
| } |
| return client; |
| } |
| |
| public void connect() throws InterruptedException, ExecutionException, IOException { |
| websocket = getClient().prepareGet(getHttpUri().toASCIIString()).execute( |
| new WebSocketUpgradeHandler.Builder() |
| .addWebSocketListener(new WsListener()).build()).get(); |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| if (websocket != null && websocket.isOpen()) { |
| websocket.close(); |
| websocket = null; |
| } |
| super.doStop(); |
| } |
| |
| void connect(WsConsumer wsConsumer) { |
| consumers.add(wsConsumer); |
| } |
| |
| void disconnect(WsConsumer wsConsumer) { |
| consumers.remove(wsConsumer); |
| } |
| |
| class WsListener implements WebSocketTextListener, WebSocketByteListener { |
| |
| @Override |
| public void onOpen(WebSocket websocket) { |
| LOG.debug("websocket opened"); |
| } |
| |
| @Override |
| public void onClose(WebSocket websocket) { |
| LOG.debug("websocket closed"); |
| } |
| |
| @Override |
| public void onError(Throwable t) { |
| LOG.error("websocket on error", t); |
| } |
| |
| @Override |
| public void onMessage(byte[] message) { |
| LOG.debug("received message --> {}", message); |
| for (WsConsumer consumer : consumers) { |
| consumer.sendMessage(message); |
| } |
| } |
| |
| @Override |
| public void onMessage(String message) { |
| LOG.debug("received message --> {}", message); |
| for (WsConsumer consumer : consumers) { |
| consumer.sendMessage(message); |
| } |
| } |
| |
| } |
| |
| protected AsyncHttpProvider getAsyncHttpProvider(AsyncHttpClientConfig config) { |
| if (GRIZZLY_AVAILABLE) { |
| return new GrizzlyAsyncHttpProvider(config); |
| } |
| return null; |
| } |
| } |