diff options
Diffstat (limited to 'java/sca/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java')
| -rw-r--r-- | java/sca/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/java/sca/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java b/java/sca/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java deleted file mode 100644 index b782875948..0000000000 --- a/java/sca/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java +++ /dev/null @@ -1,162 +0,0 @@ -/* - * 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.jsonp.runtime; - -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.lang.reflect.InvocationTargetException; -import java.util.Comparator; -import java.util.List; -import java.util.Set; -import java.util.SortedSet; -import java.util.TreeSet; - -import javax.servlet.GenericServlet; -import javax.servlet.ServletException; -import javax.servlet.ServletRequest; -import javax.servlet.ServletResponse; -import javax.servlet.http.HttpServletRequest; - -import org.apache.tuscany.sca.interfacedef.DataType; -import org.apache.tuscany.sca.interfacedef.Operation; -import org.apache.tuscany.sca.runtime.RuntimeEndpoint; -import org.codehaus.jackson.JsonParseException; -import org.codehaus.jackson.map.JsonMappingException; -import org.codehaus.jackson.map.ObjectMapper; - -public class JSONPServlet extends GenericServlet { - private static final long serialVersionUID = 1L; - - protected transient RuntimeEndpoint wire; - protected transient Operation operation; - protected transient ObjectMapper mapper; - - public JSONPServlet(RuntimeEndpoint wire, Operation operation) { - this.wire = wire; - this.operation = operation; - this.mapper = new ObjectMapper(); - } - - @Override - public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException { - String jsonRequest = getJSONRequest(servletRequest); - Object[] args = jsonToObjects(jsonRequest); - Object response = invokeService(args); - String jsonResponse = getJSONResponse(servletRequest, response); - servletResponse.getOutputStream().println(jsonResponse); - } - - /** - * Turn the request into JSON - */ - protected String getJSONRequest(ServletRequest servletRequest) throws IOException, JsonParseException, JsonMappingException { - - List<DataType> types = operation.getInputType().getLogical(); - int typesIndex = 0; - - String jsonRequest = ""; - for (String name : getOrderedParameterNames(servletRequest)) { - if (!name.startsWith("_") && !"callback".equals(name)) { - if (jsonRequest.length() > 1) { - jsonRequest += ", "; - } - - // automatically quote string parammeters so clients work in the usual javascript way - if (typesIndex < types.size() && String.class.equals(types.get(typesIndex).getGenericType())) { - String x = servletRequest.getParameter(name); - // TODO: do this more properly - if (!x.startsWith("\"")) { - jsonRequest += "\"" + x + "\""; - } else { - jsonRequest += x; - } - } else { - jsonRequest += servletRequest.getParameter(name); - } - - } - } - - return "[" + jsonRequest + "]"; - } - - /** - * Get the request parameter names in the correct order. - * The request args need to be in the correct order to invoke the service so work out 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 SortedSet<String> getOrderedParameterNames(ServletRequest servletRequest) { - 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; - }}); - - Set<String> parameterNames = servletRequest.getParameterMap().keySet(); - for (String name : parameterNames) { - sortedNames.add(name); - } - - return sortedNames; - } - - /** - * Turn the response object into JSON - */ - protected String getJSONResponse(ServletRequest servletRequest, Object response) throws IOException, JsonParseException { - ByteArrayOutputStream os = new ByteArrayOutputStream(); - mapper.writeValue(os , response); - String jsonResponse = os.toString(); - - String callback = servletRequest.getParameter("callback"); - if (callback != null && callback.length() > 1) { - jsonResponse = callback + "(" + jsonResponse + ");"; - } - - return jsonResponse; - } - - /** - * Turn the request JSON into objects - */ - protected Object[] jsonToObjects(String jsonRequest) throws IOException, JsonParseException, JsonMappingException { - Class<?> c = new Object[0].getClass(); - Object[] args = (Object[])mapper.readValue(jsonRequest, c); - return args; - } - - /** - * Send the request down the wire to invoke the service - */ - protected Object invokeService(Object[] args) { - try { - return wire.invoke(operation, args); - } catch (InvocationTargetException e) { - throw new RuntimeException(e); - } - } -}
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