1 files changed, 220 insertions, 0 deletions
diff --git a/sandbox/sebastien/java/vhost/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/TuscanyRESTServlet.java b/sandbox/sebastien/java/vhost/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/TuscanyRESTServlet.java
new file mode 100644
index 0000000000..061d615d3e
--- /dev/null
+++ b/sandbox/sebastien/java/vhost/modules/binding-rest-runtime/src/main/java/org/apache/tuscany/sca/binding/rest/provider/TuscanyRESTServlet.java
@@ -0,0 +1,220 @@
+/*
+ * 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.rest.provider;
+
+import java.io.IOException;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Enumeration;
+import java.util.GregorianCalendar;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.binding.rest.RESTBinding;
+import org.apache.tuscany.sca.common.http.HTTPCacheContext;
+import org.apache.tuscany.sca.common.http.HTTPHeader;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.extensibility.ClassLoaderContext;
+import org.apache.wink.common.internal.registry.ProvidersRegistry;
+import org.apache.wink.server.handlers.HandlersChain;
+import org.apache.wink.server.handlers.MessageContext;
+import org.apache.wink.server.handlers.ResponseHandler;
+import org.apache.wink.server.internal.DeploymentConfiguration;
+import org.apache.wink.server.internal.servlet.RestServlet;
+
+/**
+ *
+ */
+public class TuscanyRESTServlet extends RestServlet {
+    private static final Logger logger = Logger.getLogger(TuscanyRESTServlet.class.getName());
+
+    private static final long serialVersionUID = 89997233133964915L;
+    private ExtensionPointRegistry registry;
+    private RESTBinding binding;
+    private Class<?> resourceClass;
+    private boolean fixed;
+
+    public TuscanyRESTServlet(ExtensionPointRegistry registry, Binding binding, Class<?> resourceClass) {
+        super();
+        this.registry = registry;
+        this.binding = (RESTBinding) binding;
+        this.resourceClass = resourceClass;
+    }
+
+    public void init() throws ServletException {
+        ClassLoader cl =
+            ClassLoaderContext.setContextClassLoader(Thread.currentThread().getContextClassLoader(),
+                                                     registry.getServiceDiscovery(),
+                                                     "/META-INF/server/wink-providers",
+                                                     "javax.ws.rs.ext.RuntimeDelegate");
+        try {
+            super.init();
+        } finally {
+            if (cl != null) {
+                // return previous classLoader
+                Thread.currentThread().setContextClassLoader(cl);
+            }
+        }
+    }
+
+    @SuppressWarnings({"unchecked", "rawtypes"})
+    @Override
+    public DeploymentConfiguration getDeploymentConfiguration() throws ClassNotFoundException, InstantiationException,
+        IllegalAccessException, IOException {
+
+
+        // setup proper classLoader to work on OSGi environment
+        ClassLoader cl =
+            ClassLoaderContext.setContextClassLoader(Thread.currentThread().getContextClassLoader(),
+                                                     registry.getServiceDiscovery(),
+                                                     "javax.ws.rs.ext.RuntimeDelegate",
+                                                     "/META-INF/wink-alternate-shortcuts.properties",
+                                                     "/META-INF/server/wink-providers");
+
+        DeploymentConfiguration config = null;
+        try {
+            config = super.getDeploymentConfiguration();
+        } finally {
+            if (cl != null) {
+                // return previous classLoader
+                Thread.currentThread().setContextClassLoader(cl);
+            }
+        }
+
+        // [rfeng] FIXME: This is a hack to fool Apache wink to not remove the servlet path
+        config.setFilterConfig(new FilterConfig() {
+
+            public ServletContext getServletContext() {
+                return getServletContext();
+            }
+
+            public Enumeration getInitParameterNames() {
+                return getInitParameterNames();
+            }
+
+            public String getInitParameter(String arg0) {
+                return getInitParameter(arg0);
+            }
+
+            public String getFilterName() {
+                return getServletName();
+            }
+        });
+
+        ProvidersRegistry providers = config.getProvidersRegistry();
+        providers.addProvider(new DataBindingJAXRSReader(registry), 0.001, true);
+        providers.addProvider(new DataBindingJAXRSWriter(registry), 0.001, true);
+
+        config.getResponseUserHandlers().add(new TuscanyResponseHandler());
+
+        return config;
+    }
+
+    /*
+    private synchronized void fixMediaTypes(DeploymentConfiguration config) {
+        if (fixed) {
+            return;
+        }
+        // FIXME: A hacky workaround for https://issues.apache.org/jira/browse/TUSCANY-3572
+        ResourceRecord record = config.getResourceRegistry().getRecord(resourceClass);
+
+        for (MethodMetadata methodMetadata : record.getMetadata().getResourceMethods()) {
+            String method = methodMetadata.getHttpMethod();
+            if (HttpMethod.GET.equals(method) || HttpMethod.HEAD.equals(method) || HttpMethod.DELETE.equals(method)) {
+                methodMetadata.addConsumes(MediaType.APPLICATION_OCTET_STREAM_TYPE);
+                methodMetadata.addConsumes(MediaType.WILDCARD_TYPE);
+            }
+            if (HttpMethod.HEAD.equals(method) || HttpMethod.DELETE.equals(method)) {
+                methodMetadata.addProduces(MediaType.APPLICATION_OCTET_STREAM_TYPE);
+                methodMetadata.addConsumes(MediaType.WILDCARD_TYPE);
+            }
+        }
+        for (MethodMetadata methodMetadata : record.getMetadata().getSubResourceMethods()) {
+            String method = methodMetadata.getHttpMethod();
+            if (HttpMethod.GET.equals(method) || HttpMethod.HEAD.equals(method) || HttpMethod.DELETE.equals(method)) {
+                methodMetadata.addConsumes(MediaType.APPLICATION_OCTET_STREAM_TYPE);
+                methodMetadata.addConsumes(MediaType.WILDCARD_TYPE);
+            }
+            if (HttpMethod.HEAD.equals(method) || HttpMethod.DELETE.equals(method)) {
+                methodMetadata.addProduces(MediaType.APPLICATION_OCTET_STREAM_TYPE);
+                methodMetadata.addConsumes(MediaType.WILDCARD_TYPE);
+            }
+        }
+        fixed = true;
+    }
+
+    @Override
+    public RequestProcessor getRequestProcessor() {
+        RequestProcessor processor = super.getRequestProcessor();
+        // The 1st call returns null
+        if (processor != null) {
+            fixMediaTypes(processor.getConfiguration());
+        }
+        return processor;
+    }
+    */
+
+    /**
+     * TuscanyResponseHandler
+     *
+     * Required to support declartive HTTP Headers
+     */
+    class TuscanyResponseHandler implements ResponseHandler {
+        public void handleResponse(MessageContext context, HandlersChain chain) throws Throwable {
+
+            // assert response is not committed
+            final HttpServletResponse httpResponse = context.getAttribute(HttpServletResponse.class);
+            if (httpResponse.isCommitted()) {
+                logger.log(Level.FINE, "The response is already committed. Nothing to do.");
+                return;
+            }
+
+            //process declarative headers
+            for(HTTPHeader header : binding.getHttpHeaders()) {
+                //treat special headers that need to be calculated
+                if(header.getName().equalsIgnoreCase("Expires")) {
+                    GregorianCalendar calendar = new GregorianCalendar();
+                    calendar.setTime(new Date());
+
+                    calendar.add(Calendar.HOUR, Integer.parseInt(header.getValue()));
+
+                    httpResponse.setHeader("Expires", HTTPCacheContext.RFC822DateFormat.format( calendar.getTime() ));
+                } else {
+                    //default behaviour to pass the header value to HTTP response
+                    httpResponse.setHeader(header.getName(), header.getValue());
+                }
+            }
+
+            chain.doChain(context);
+        }
+
+        public void init(Properties props) {
+
+        }
+    }
+
+}