TUSCANY-2968 - Renaming new binding.http module to avoid confusion with the oasis draft, as we are not really implementing the whole spec but just following the wireFormat and operationSelector options implemented in binding.jms

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@770880 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 516 insertions, 0 deletions

diff --git a/branches/sca-java-1.x/modules/binding-http-new-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPBindingListenerServlet.java b/branches/sca-java-1.x/modules/binding-http-new-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPBindingListenerServlet.java
new file mode 100644
index 0000000000..12f1143e3a
--- /dev/null
+++ b/branches/sca-java-1.x/modules/binding-http-new-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPBindingListenerServlet.java
@@ -0,0 +1,516 @@
+/*
+ * 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.provider;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URLDecoder;
+import java.text.ParseException;
+import java.util.List;
+
+import javax.servlet.ServletException;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.binding.http.HTTPCacheContext;
+import org.apache.tuscany.sca.binding.http.util.HTTPHeadersParser;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.apache.tuscany.sca.invocation.MessageFactory;
+import org.apache.tuscany.sca.policy.Intent;
+import org.apache.tuscany.sca.policy.PolicySet;
+import org.apache.tuscany.sca.policy.PolicySetAttachPoint;
+import org.apache.tuscany.sca.policy.authentication.basic.BasicAuthenticationPolicy;
+
+/**
+ * Servlet responsible for dispatching HTTP requests to the
+ * target component implementation.
+ *
+ * @version $Rev$ $Date$
+ */
+public class HTTPBindingListenerServlet extends HttpServlet {
+    private static final long serialVersionUID = 2865466417329430610L;
+    
+    private static final QName AUTEHTICATION_INTENT = new QName("http://www.osoa.org/xmlns/sca/1.0","authentication");
+    
+    transient private Binding binding;
+
+    transient private boolean requiresAuthentication = false;
+    transient private BasicAuthenticationPolicy basicAuthenticationPolicy = null;
+
+    private MessageFactory messageFactory;
+    private Invoker getInvoker;
+    private Invoker conditionalGetInvoker;
+    private Invoker putInvoker;
+    private Invoker conditionalPutInvoker;
+    private Invoker postInvoker;
+    private Invoker conditionalPostInvoker;
+    private Invoker deleteInvoker;
+    private Invoker conditionalDeleteInvoker;
+    
+    /**
+     * Constructs a new HTTPServiceListenerServlet.
+     */
+    public HTTPBindingListenerServlet(Binding binding, MessageFactory messageFactory) {
+        this.binding = binding;
+        this.messageFactory = messageFactory;
+        
+
+        // find out which policies are active
+        if (binding instanceof PolicySetAttachPoint) {
+            List<Intent> intents = ((PolicySetAttachPoint)binding).getRequiredIntents();
+            for(Intent intent : intents) {
+                if(intent.getName().equals(AUTEHTICATION_INTENT)) {
+                    requiresAuthentication = true;
+                }
+            }
+
+
+            List<PolicySet> policySets = ((PolicySetAttachPoint)binding).getApplicablePolicySets();
+            for (PolicySet ps : policySets) {
+                for (Object p : ps.getPolicies()) {
+                    if (BasicAuthenticationPolicy.class.isInstance(p)) {
+                        basicAuthenticationPolicy = (BasicAuthenticationPolicy)p;
+                    } else {
+                        // etc. check for other types of policy being present
+                    }
+                }
+            }
+        }        
+    }
+
+    
+    @Override
+    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+        if(requiresAuthentication) {
+            if(! hasAuthorization(request, response)) {
+                response.setHeader("WWW-Authenticate", "BASIC realm=\"Tuscany\"");
+                response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
+            }
+        }
+        
+        super.service(request, response);
+    }    
+    
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        // Get the request path
+        String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
+        if (path.length() ==0) {            
+            // Redirect to a URL ending with / to make relative hrefs work
+            // relative to the served resource.
+            response.sendRedirect(request.getRequestURL().append('/').toString());
+            return;
+        }
+
+        // Invoke the get operation on the service implementation
+        Message requestMessage = messageFactory.createMessage();
+
+        //store http headers to message
+        requestMessage.getHeaders().addAll(HTTPHeadersParser.getHeaders(request));
+        
+        String id = path.substring(1);
+        
+        Message responseMessage = null;
+        HTTPCacheContext cacheContext = null;
+        try { 
+           cacheContext = HTTPCacheContext.getCacheContextFromRequest(request);
+        } catch (ParseException e) {        	
+        }
+
+        // Route message based on availability of cache info and cache methods
+        if (( cacheContext != null ) && (cacheContext.isEnabled()) && (conditionalGetInvoker != null )) {        
+        	requestMessage.setBody(new Object[] {id, cacheContext});
+        	responseMessage = conditionalGetInvoker.invoke(requestMessage);
+        } else {
+        	requestMessage.setBody(new Object[] {id});
+        	responseMessage = getInvoker.invoke(requestMessage);
+        }
+        if (responseMessage.isFault()) {
+        	Object body = responseMessage.getBody();
+        	
+        	int index = -1;
+        	if ( -1 < (index = body.getClass().getName().indexOf( "NotModifiedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED );
+        		return;
+        	} else if ( -1 < (index = body.getClass().getName().indexOf( "PreconditionFailedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED );
+        		return;            		
+            }
+        		        	
+            throw new ServletException((Throwable)responseMessage.getBody());
+        }
+        
+        // Write the response from the service implementation to the response
+        // output stream
+        InputStream is = (InputStream)responseMessage.getBody();
+        OutputStream os = response.getOutputStream(); 
+        byte[] buffer = new byte[2048];
+        for (;;) {
+            int n = is.read(buffer);
+            if (n <= 0)
+                break;
+            os.write(buffer, 0, n);
+        }
+        os.flush();
+        os.close();        
+    }
+
+    @Override
+    protected void doDelete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        // Get the request path
+        String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
+        if (path.length() ==0) {            
+            // Redirect to a URL ending with / to make relative hrefs work
+            // relative to the served resource.
+            response.sendRedirect(request.getRequestURL().append('/').toString());
+            return;
+        }
+
+        // Invoke the get operation on the service implementation
+        Message requestMessage = messageFactory.createMessage();
+        String id = path.substring(1);
+        
+        Message responseMessage = null;
+        HTTPCacheContext cacheContext = null;
+        try { 
+           cacheContext = HTTPCacheContext.getCacheContextFromRequest(request);
+        } catch (ParseException e) {        	
+        }
+        
+        // Route message based on availability of cache info and cache methods
+        if (( cacheContext != null ) && (cacheContext.isEnabled()) && (conditionalDeleteInvoker != null )) {        
+        	requestMessage.setBody(new Object[] {id, cacheContext});
+        	responseMessage = conditionalDeleteInvoker.invoke(requestMessage);
+        } else {
+        	requestMessage.setBody(new Object[] {id});
+        	responseMessage = deleteInvoker.invoke(requestMessage);
+        }
+        if (responseMessage.isFault()) {
+        	Object body = responseMessage.getBody();
+        	
+        	int index = -1;
+        	if ( -1 < (index = body.getClass().getName().indexOf( "NotModifiedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED );
+        		return;
+        	} else if ( -1 < (index = body.getClass().getName().indexOf( "PreconditionFailedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED );
+        		return;            		
+            }        		
+        	
+            throw new ServletException((Throwable)responseMessage.getBody());
+        }
+        
+        // Write the response from the service implementation to the response
+        // output stream
+        InputStream is = (InputStream)responseMessage.getBody();
+        OutputStream os = response.getOutputStream(); 
+        byte[] buffer = new byte[2048];
+        for (;;) {
+            int n = is.read(buffer);
+            if (n <= 0)
+                break;
+            os.write(buffer, 0, n);
+        }
+        os.flush();
+        os.close();        
+    }
+
+    @Override
+    protected void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        // Get the request path
+        String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
+        if (path.length() ==0) {            
+            // Redirect to a URL ending with / to make relative hrefs work
+            // relative to the served resource.
+            response.sendRedirect(request.getRequestURL().append('/').toString());
+            return;
+        }
+
+        // Invoke the get operation on the service implementation
+        Message requestMessage = messageFactory.createMessage();
+        String id = path.substring(1);
+        
+        Message responseMessage = null;
+        HTTPCacheContext cacheContext = null;
+        try { 
+           cacheContext = HTTPCacheContext.getCacheContextFromRequest(request);
+        } catch (ParseException e) {        	
+        }
+        
+        // Route message based on availability of cache info and cache methods
+        if (( cacheContext != null ) && (cacheContext.isEnabled()) && (conditionalPutInvoker != null )) {        
+        	requestMessage.setBody(new Object[] {id, cacheContext});
+        	responseMessage = conditionalPutInvoker.invoke(requestMessage);
+        } else {
+        	requestMessage.setBody(new Object[] {id});
+        	responseMessage = putInvoker.invoke(requestMessage);
+        }
+        if (responseMessage.isFault()) {
+        	Object body = responseMessage.getBody();
+        	
+        	int index = -1;
+        	if ( -1 < (index = body.getClass().getName().indexOf( "NotModifiedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED );
+        		return;
+        	} else if ( -1 < (index = body.getClass().getName().indexOf( "PreconditionFailedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED );
+        		return;            		
+            }        		
+        	
+            throw new ServletException((Throwable)responseMessage.getBody());
+        }
+        
+        // Write the response from the service implementation to the response
+        // output stream
+        InputStream is = (InputStream)responseMessage.getBody();
+        OutputStream os = response.getOutputStream(); 
+        byte[] buffer = new byte[2048];
+        for (;;) {
+            int n = is.read(buffer);
+            if (n <= 0)
+                break;
+            os.write(buffer, 0, n);
+        }
+        os.flush();
+        os.close();        
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        // Get the request path
+        String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8");
+        if (path.length() ==0) {            
+            // Redirect to a URL ending with / to make relative hrefs work
+            // relative to the served resource.
+            response.sendRedirect(request.getRequestURL().append('/').toString());
+            return;
+        }
+
+        // Invoke the get operation on the service implementation
+        Message requestMessage = messageFactory.createMessage();
+        // String id = path.substring(1);
+        
+        Message responseMessage = null;
+        HTTPCacheContext cacheContext = null;
+        try { 
+           cacheContext = HTTPCacheContext.getCacheContextFromRequest(request);
+        } catch (ParseException e) {        	
+        }
+        
+        // Route message based on availability of cache info and cache methods
+        if (( cacheContext != null ) && (cacheContext.isEnabled()) && (conditionalPostInvoker != null )) {        
+        	requestMessage.setBody(new Object[] {cacheContext});
+        	responseMessage = conditionalPostInvoker.invoke(requestMessage);
+        } else {
+        	requestMessage.setBody(new Object[] {});
+        	responseMessage = postInvoker.invoke(requestMessage);
+        }
+        if (responseMessage.isFault()) {
+        	Object body = responseMessage.getBody();
+        	
+        	int index = -1;
+        	if ( -1 < (index = body.getClass().getName().indexOf( "NotModifiedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_NOT_MODIFIED );
+        		return;
+        	} else if ( -1 < (index = body.getClass().getName().indexOf( "PreconditionFailedException")) ) {
+        		if ( index > -1 ) 
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED, body.toString().substring( index ));
+        		else
+            		response.sendError( HttpServletResponse.SC_PRECONDITION_FAILED );
+        		return;            		
+            }        		
+        	
+            throw new ServletException((Throwable)responseMessage.getBody());
+        }
+
+
+        // Test if the ETag and LastModified are returned as a cache context.
+    	Object body = responseMessage.getBody();
+    	if ( body.getClass() == HTTPCacheContext.class ) {
+    		// Transfer to header if so.
+    		HTTPCacheContext cc = (HTTPCacheContext)responseMessage.getBody();
+    		if (( cc != null ) && ( cc.isEnabled() )) {
+    			String eTag = cc.getETag();
+            	if ( eTag != null )
+            		response.setHeader( "ETag", cc.getETag() );
+            	String lastModified = cc.getLastModified();
+            	if ( lastModified != null)
+            		response.setHeader( "LastModified", cc.getLastModified() );
+    		}
+    	}
+    }
+
+    /**
+     * @return the getInvoker
+     */
+    public Invoker getGetInvoker() {
+        return getInvoker;
+    }
+
+    /**
+     * @param getInvoker the getInvoker to set
+     */
+    public void setGetInvoker(Invoker getInvoker) {
+        this.getInvoker = getInvoker;
+    }
+
+    /**
+     * @return the conditionalGetInvoker
+     */
+    public Invoker getConditionalGetInvoker() {
+        return conditionalGetInvoker;
+    }
+
+    /**
+     * @param conditionalGetInvoker the conditionalGetInvoker to set
+     */
+    public void setConditionalGetInvoker(Invoker conditionalGetInvoker) {
+        this.conditionalGetInvoker = conditionalGetInvoker;
+    }
+
+    /**
+     * @return the putInvoker
+     */
+    public Invoker getPutInvoker() {
+        return putInvoker;
+    }
+
+    /**
+     * @param putInvoker the putInvoker to set
+     */
+    public void setPutInvoker(Invoker putInvoker) {
+        this.putInvoker = putInvoker;
+    }
+
+    /**
+     * @return the conditionalPutInvoker
+     */
+    public Invoker getConditionalPutInvoker() {
+        return conditionalPutInvoker;
+    }
+
+    /**
+     * @param conditionalPutInvoker the conditionalPutInvoker to set
+     */
+    public void setConditionalPutInvoker(Invoker conditionalPutInvoker) {
+        this.conditionalPutInvoker = conditionalPutInvoker;
+    }
+
+    /**
+     * @return the postInvoker
+     */
+    public Invoker getPostInvoker() {
+        return postInvoker;
+    }
+
+    /**
+     * @param postInvoker the postInvoker to set
+     */
+    public void setPostInvoker(Invoker postInvoker) {
+        this.postInvoker = postInvoker;
+    }
+
+    /**
+     * @return the conditionalPostInvoker
+     */
+    public Invoker getConditionalPostInvoker() {
+        return conditionalPostInvoker;
+    }
+
+    /**
+     * @param conditionalPostInvoker the conditionalPostInvoker to set
+     */
+    public void setConditionalPostInvoker(Invoker conditionalPostInvoker) {
+        this.conditionalPostInvoker = conditionalPostInvoker;
+    }
+
+    /**
+     * @return the deleteInvoker
+     */
+    public Invoker getDeleteInvoker() {
+        return deleteInvoker;
+    }
+
+    /**
+     * @param deleteInvoker the deleteInvoker to set
+     */
+    public void setDeleteInvoker(Invoker deleteInvoker) {
+        this.deleteInvoker = deleteInvoker;
+    }
+
+    /**
+     * @return the conditionalDeleteInvoker
+     */
+    public Invoker getConditionalDeleteInvoker() {
+        return conditionalDeleteInvoker;
+    }
+
+    /**
+     * @param conditionalDeleteInvoker the conditionalDeleteInvoker to set
+     */
+    public void setConditionalDeleteInvoker(Invoker conditionalDeleteInvoker) {
+        this.conditionalDeleteInvoker = conditionalDeleteInvoker;
+    }
+
+    
+    /** 
+     * Utility Methods related to Policy
+     */
+    
+
+    private boolean hasAuthorization(HttpServletRequest request, ServletResponse response) {
+        boolean result = false;
+        if(request.getHeader("Authorization") != null) {
+            result = true;
+        }
+        
+        return result;
+    }
+
+
+}