1 files changed, 182 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/provider/HTTPXMLWireFormatServiceInterceptor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/provider/HTTPXMLWireFormatServiceInterceptor.java
new file mode 100644
index 0000000000..93935a9f41
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/wireformat/provider/HTTPXMLWireFormatServiceInterceptor.java
@@ -0,0 +1,182 @@
+/*
+ * 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.http.wireformat.provider;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Set;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+import javax.servlet.ServletRequest;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.tuscany.sca.common.http.HTTPContext;
+import org.apache.tuscany.sca.common.xml.dom.DOMHelper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.interfacedef.util.FaultException;
+import org.apache.tuscany.sca.invocation.Interceptor;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
+import org.oasisopen.sca.ServiceRuntimeException;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.xml.sax.SAXException;
+
+/**
+ * Handles the xml wire format for the http binding
+ */
+public class HTTPXMLWireFormatServiceInterceptor implements Interceptor {
+
+    private Invoker next;
+    private DOMHelper domHelper;
+
+    public HTTPXMLWireFormatServiceInterceptor(RuntimeEndpoint endpoint, DOMHelper domHelper) {
+        this.domHelper = domHelper;
+    }
+
+    @Override
+    public void setNext(Invoker next) {
+        this.next = next;
+    }
+
+    @Override
+    public Invoker getNext() {
+        return next;
+    }
+
+    @Override
+    public Message invoke(Message msg) {
+        try {
+            return invokeResponse(getNext().invoke(invokeRequest(msg)));
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    private Message invokeRequest(Message msg) throws IOException, SAXException {
+        HTTPContext context = msg.getBindingContext();
+        HttpServletRequest servletRequest = context.getHttpRequest();
+        if ("GET".equals(servletRequest.getMethod())) {
+            msg.setBody(getRequestFromQueryString(msg.getOperation(), servletRequest));
+        } else {
+            msg.setBody(new Object[]{domHelper.load(read(servletRequest))});
+        }
+        return msg;
+    }
+
+    private Message invokeResponse(Message msg) throws IOException {
+        HTTPContext context = msg.getBindingContext();
+        HttpServletResponse servletResponse = context.getHttpResponse();
+
+        servletResponse.setContentType("text/xml");
+        
+        Object o = msg.getBody();
+        if (msg.isFault()) {
+            String xml = domHelper.saveAsString((Node)((FaultException)o).getFaultInfo());
+            servletResponse.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, xml);
+        } else {
+            String xml = "";
+            if (o instanceof Element) {
+               xml = domHelper.saveAsString((Node)o);
+            } else if ((o instanceof Object[]) && ((Object[])o)[0] instanceof Node) {
+                xml = domHelper.saveAsString((Node)((Object[])o)[0]);
+            } else if (o != null) {
+                throw new IllegalStateException("expecting Node payload: " + o);
+            }
+            servletResponse.getOutputStream().println(xml);
+        }
+
+        return msg;
+    }
+
+    /**
+     * Turn the query request into XML.
+     */
+    protected Object[] getRequestFromQueryString(Operation operation, ServletRequest servletRequest) throws IOException, SAXException {
+        List<Object> xmlRequestArray = new ArrayList<Object>();
+        for (String name : getOrderedParameterNames(servletRequest)) {
+            xmlRequestArray.add(domHelper.load("<" + name + ">" + servletRequest.getParameter(name) + "</" + name + ">"));
+        }
+        return xmlRequestArray.toArray();
+    }
+
+    /**
+     * Get the request parameter names in the correct order.
+     * Either the query parameters are named arg0, arg1, arg2 etc or else use the order
+     * from the order in the query string. Eg, the url:
+     *   http://localhost:8085/HelloWorldService/sayHello2?first=petra&last=arnold&callback=foo"
+     * should invoke:
+     *   sayHello2("petra", "arnold")
+     * so the parameter names should be ordered: "first", "last"
+     */
+    protected List<String> getOrderedParameterNames(ServletRequest servletRequest) {
+        List<String> orderedNames = new ArrayList<String>();
+        Set<String> parameterNames = servletRequest.getParameterMap().keySet();
+        if (parameterNames.contains("arg0")) {
+            for (int i=0; i<parameterNames.size(); i++) {
+                String name = "arg" + i;
+                if (parameterNames.contains(name)) {
+                    orderedNames.add(name);
+                } else {
+                    break;
+                }
+            }
+        } else {
+            final String queryString = ((HttpServletRequest)servletRequest).getQueryString();
+            SortedSet<String> sortedNames = new TreeSet<String>(new Comparator<String>(){
+                public int compare(String o1, String o2) {
+                    int i = queryString.indexOf(o1);
+                    int j = queryString.indexOf(o2);
+                    return i - j;
+                }});
+            for (String name : parameterNames) {
+                sortedNames.add(name);    
+            }
+            orderedNames.addAll(sortedNames);
+        }
+        return orderedNames;
+    }
+
+    protected static String read(HttpServletRequest servletRequest) throws IOException {
+        InputStream is = servletRequest.getInputStream();
+        BufferedReader reader = null;
+        try {
+            reader = new BufferedReader(new InputStreamReader(is));
+            StringBuffer sb = new StringBuffer();
+            String str;
+            while ((str = reader.readLine()) != null) {
+                sb.append(str);
+            }
+            return sb.toString();
+        } finally {
+            if (reader != null) {
+                reader.close();
+            }
+        }
+    }
+}