diff options
Diffstat (limited to 'sca-java-1.x/tags/0.91-incubating/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/FeedBindingListener.java')
-rw-r--r-- | sca-java-1.x/tags/0.91-incubating/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/FeedBindingListener.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/0.91-incubating/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/FeedBindingListener.java b/sca-java-1.x/tags/0.91-incubating/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/FeedBindingListener.java new file mode 100644 index 0000000000..0ceb1f9064 --- /dev/null +++ b/sca-java-1.x/tags/0.91-incubating/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/FeedBindingListener.java @@ -0,0 +1,89 @@ +/* + * 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.tuscany.sca.binding.feed.provider; + +import java.io.IOException; +import java.io.OutputStream; +import java.io.PrintWriter; + +import javax.servlet.ServletConfig; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +import org.apache.tuscany.sca.binding.feed.Feed; + +import com.sun.syndication.feed.synd.SyndFeed; +import com.sun.syndication.io.FeedException; +import com.sun.syndication.io.SyndFeedOutput; + +/** + * A Feed binding listener, implemented as a servlet and register in a + * servlet host provided by the SCA hosting runtime. + */ +public class FeedBindingListener extends HttpServlet { + private static final long serialVersionUID = 1L; + + String serviceName; + Class<?> serviceInterface; + Object serviceInstance; + String feedType; + + public FeedBindingListener(String serviceName, Class<?> serviceInterface, Object serviceInstance, String feedType) { + this.serviceName = serviceName; + this.serviceInterface = serviceInterface; + this.serviceInstance = serviceInstance; + this.feedType = feedType; + } + + @Override + public void init(ServletConfig config) { + } + + @Override + public void service(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { + + // The feedType parameter is used to override what type of feed is going to + // be produced + String requestFeedType = request.getParameter("feedType"); + if (requestFeedType == null) + requestFeedType = feedType; + + System.out.println(">>> FeedEndPointServlet (" + requestFeedType + ") " + request.getRequestURI()); + + // Assuming that the service provided by this binding implements the Feed + // service interface, get the Feed from the service + String uri = request.getRequestURL().toString(); + SyndFeed syndFeed = ((Feed)serviceInstance).get(uri); + syndFeed.setFeedType(requestFeedType); + + // Write the Feed to the servlet output + OutputStream output = response.getOutputStream(); + SyndFeedOutput syndOutput = new SyndFeedOutput(); + try { + syndOutput.output(syndFeed, new PrintWriter(output)); + } catch (FeedException e) { + throw new ServletException(e); + } + + output.flush(); + output.close(); + } +} |