diff options
Diffstat (limited to '')
5 files changed, 496 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPBindingProviderFactory.java b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPBindingProviderFactory.java new file mode 100644 index 0000000000..1f2ed09c07 --- /dev/null +++ b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPBindingProviderFactory.java @@ -0,0 +1,52 @@ +/* + * 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 org.apache.tuscany.sca.binding.jsonp.JSONPBinding; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.host.http.ServletHostHelper; +import org.apache.tuscany.sca.provider.BindingProviderFactory; +import org.apache.tuscany.sca.provider.ReferenceBindingProvider; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; +import org.apache.tuscany.sca.runtime.RuntimeEndpointReference; + +public class JSONPBindingProviderFactory implements BindingProviderFactory<JSONPBinding> { + + private ServletHost servletHost; + + public JSONPBindingProviderFactory(ExtensionPointRegistry extensionPoints) { + this.servletHost = ServletHostHelper.getServletHost(extensionPoints); + } + + public Class<JSONPBinding> getModelType() { + return JSONPBinding.class; + } + + public ReferenceBindingProvider createReferenceBindingProvider(RuntimeEndpointReference endpoint) { + return new JSONPReferenceBindingProvider(endpoint); + } + + public ServiceBindingProvider createServiceBindingProvider(RuntimeEndpoint endpoint) { + return new JSONPServiceBindingProvider(endpoint, servletHost); + } + +} diff --git a/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java new file mode 100644 index 0000000000..a5d0c3a8da --- /dev/null +++ b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPInvoker.java @@ -0,0 +1,161 @@ +/*
+ * 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.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import org.apache.commons.codec.EncoderException;
+import org.apache.commons.codec.net.URLCodec;
+import org.apache.http.HttpEntity;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.invocation.Message;
+import org.codehaus.jackson.JsonGenerationException;
+import org.codehaus.jackson.JsonParseException;
+import org.codehaus.jackson.map.JsonMappingException;
+import org.codehaus.jackson.map.ObjectMapper;
+
+public class JSONPInvoker implements Invoker {
+
+ protected Operation operation;
+ protected EndpointReference endpoint;
+
+ protected ObjectMapper mapper; // TODO: share mapper btw invoker and servlet or move to databinding
+
+ public JSONPInvoker(Operation operation, EndpointReference endpoint) {
+ this.operation = operation;
+ this.endpoint = endpoint;
+ this.mapper = new ObjectMapper();
+ }
+
+ public Message invoke(Message msg) {
+ try {
+
+ return doInvoke(msg);
+
+ } catch (Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+
+ public Message doInvoke(Message msg) throws JsonGenerationException, JsonMappingException, IOException, EncoderException {
+ String uri = endpoint.getBinding().getURI() + "/" + operation.getName();
+ String[] jsonArgs = objectsToJSON((Object[])msg.getBody());
+
+ String responseJSON = invokeHTTPRequest(uri, jsonArgs);
+
+ Object response = jsonToObjects(responseJSON)[0];
+ msg.setBody(response);
+
+ return msg;
+ }
+
+ protected String invokeHTTPRequest(String url, String[] jsonArgs) throws IOException, EncoderException {
+
+ HttpClient httpclient = new DefaultHttpClient();
+
+
+ URLCodec uc = new URLCodec();
+ for (int i=0 ; i<jsonArgs.length; i++) {
+ if (i == 0) {
+ url += '?';
+ } else {
+ url += '&';
+ }
+ url += "arg" + i + "=";
+ url += uc.encode(jsonArgs[i]);
+ }
+
+ HttpGet httpget = new HttpGet(url);
+
+ HttpResponse response = httpclient.execute(httpget);
+
+ StringBuffer responseJSON = new StringBuffer();
+
+ HttpEntity entity = response.getEntity();
+
+ // If the response does not enclose an entity, there is no need
+ // to worry about connection release
+ if (entity != null) {
+ InputStream instream = entity.getContent();
+ try {
+
+ BufferedReader reader = new BufferedReader(new InputStreamReader(instream));
+ String s = null;
+ while ((s = reader.readLine()) != null) {
+ responseJSON.append(s);
+ }
+
+ } catch (IOException ex) {
+
+ // In case of an IOException the connection will be released
+ // back to the connection manager automatically
+ throw ex;
+
+ } catch (RuntimeException ex) {
+
+ // In case of an unexpected exception you may want to abort
+ // the HTTP request in order to shut down the underlying
+ // connection and release it back to the connection manager.
+ httpget.abort();
+ throw ex;
+
+ } finally {
+
+ // Closing the input stream will trigger connection release
+ instream.close();
+
+ }
+
+ // When HttpClient instance is no longer needed,
+ // shut down the connection manager to ensure
+ // immediate deallocation of all system resources
+ httpclient.getConnectionManager().shutdown();
+ }
+
+ return responseJSON.toString();
+ }
+
+ protected String[] objectsToJSON(Object[] msgArgs) throws JsonGenerationException, JsonMappingException, IOException {
+ String[] jsonArgs = new String[msgArgs.length];
+ for (int i=0; i<msgArgs.length; i++) {
+ ByteArrayOutputStream os = new ByteArrayOutputStream();
+ mapper.writeValue(os , msgArgs[i]);
+ jsonArgs[i] = os.toString();
+ }
+ return jsonArgs;
+ }
+
+ protected Object[] jsonToObjects(String jsonRequest) throws JsonParseException, JsonMappingException, IOException {
+ Class<?> c = new Object[0].getClass();
+ Object[] args = (Object[])mapper.readValue("[" + jsonRequest +"]", c);
+ return args;
+ }
+
+}
diff --git a/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPReferenceBindingProvider.java b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPReferenceBindingProvider.java new file mode 100644 index 0000000000..0af9582e97 --- /dev/null +++ b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPReferenceBindingProvider.java @@ -0,0 +1,53 @@ +/*
+ * 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 org.apache.tuscany.sca.assembly.EndpointReference;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.invocation.Invoker;
+import org.apache.tuscany.sca.provider.ReferenceBindingProvider;
+
+public class JSONPReferenceBindingProvider implements ReferenceBindingProvider {
+
+ private EndpointReference endpoint;
+
+ public JSONPReferenceBindingProvider(EndpointReference endpoint) {
+ this.endpoint = endpoint;
+ }
+ public Invoker createInvoker(Operation operation) {
+ return new JSONPInvoker(operation, endpoint);
+ }
+
+ public void start() {
+ }
+
+ public void stop() {
+ }
+
+ public InterfaceContract getBindingInterfaceContract() {
+ return null;
+ }
+
+ public boolean supportsOneWayInvocation() {
+ return false;
+ }
+
+}
diff --git a/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServiceBindingProvider.java b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServiceBindingProvider.java new file mode 100644 index 0000000000..4e3f7321af --- /dev/null +++ b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServiceBindingProvider.java @@ -0,0 +1,68 @@ +/* + * 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 org.apache.tuscany.sca.assembly.ComponentService; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; + +public class JSONPServiceBindingProvider implements ServiceBindingProvider { + + private RuntimeEndpoint endpoint; + private ServletHost servletHost; + + public JSONPServiceBindingProvider(RuntimeEndpoint endpoint, ServletHost servletHost) { + this.endpoint = endpoint; + this.servletHost = servletHost; + } + + public void start() { + ComponentService service = endpoint.getService(); + Interface serviceInterface = service.getInterfaceContract().getInterface(); + for (Operation op : serviceInterface.getOperations()) { + JSONPServlet servlet = new JSONPServlet(endpoint, op); + String path = endpoint.getBinding().getURI() + "/" + op.getName(); + servletHost.addServletMapping(path, servlet); + } + } + + public void stop() { + ComponentService service = endpoint.getService(); + Interface serviceInterface = service.getInterfaceContract().getInterface(); + for (Operation op : serviceInterface.getOperations()) { + String path = endpoint.getBinding().getURI() + "/" + op.getName(); + servletHost.removeServletMapping(path); + } + } + + // TODO: Why are these two still on the ServiceBindingProvider interface? + public InterfaceContract getBindingInterfaceContract() { + return null; + } + + public boolean supportsOneWayInvocation() { + return false; + } + +} diff --git a/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java new file mode 100644 index 0000000000..b782875948 --- /dev/null +++ b/sca-java-2.x/branches/sca-java-2.0-M5/modules/binding-jsonp-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonp/runtime/JSONPServlet.java @@ -0,0 +1,162 @@ +/* + * 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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