diff options
Diffstat (limited to '')
-rw-r--r-- | branches/sca-java-1.x/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPBindingListenerServlet.java | 516 |
1 files changed, 516 insertions, 0 deletions
diff --git a/branches/sca-java-1.x/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPBindingListenerServlet.java b/branches/sca-java-1.x/modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPBindingListenerServlet.java new file mode 100644 index 0000000000..084f52026f --- /dev/null +++ b/branches/sca-java-1.x/modules/binding-http-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(! hasAuthenticationHeader(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 hasAuthenticationHeader(HttpServletRequest request, ServletResponse response) {
+ boolean result = false;
+ if(request.getHeader("Authorization") != null) {
+ result = true;
+ }
+
+ return result;
+ }
+
+
+}
|