diff options
Diffstat (limited to 'tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca')
8 files changed, 948 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java new file mode 100644 index 0000000000..f3abf82520 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingInvoker.java @@ -0,0 +1,147 @@ +/* + * 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.jsonrpc.provider; + +import org.apache.http.HttpResponse; +import org.apache.http.HttpStatus; +import org.apache.http.client.HttpClient; +import org.apache.http.client.methods.HttpPost; +import org.apache.http.entity.StringEntity; +import org.apache.http.util.EntityUtils; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.DataExchangeSemantics; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.json.JSONArray; +import org.json.JSONObject; + +/** + * Invoker for the JSONRPC Binding + * + * @version $Rev$ $Date$ + */ +public class JSONRPCBindingInvoker implements Invoker, DataExchangeSemantics { + private EndpointReference endpointReference; + private Operation operation; + private String uri; + + private HttpClient httpClient; + + public JSONRPCBindingInvoker(EndpointReference endpointReference, Operation operation, HttpClient httpClient) { + this.endpointReference = endpointReference; + this.operation = operation; + this.uri = ((JSONRPCBinding) endpointReference.getBinding()).getURI(); + + this.httpClient = httpClient; + } + + public Message invoke(Message msg) { + HttpPost post = null; + HttpResponse response = null; + try { + + JSONObject jsonRequest = null;; + String requestId = "1"; + Object[] args = null; + try { + // Extract the method + jsonRequest = new JSONObject(); + jsonRequest.putOpt("method", "Service" + "." + msg.getOperation().getName()); + + // Extract the arguments + args = msg.getBody(); + JSONArray array = new JSONArray(); + for (int i = 0; i < args.length; i++) { + array.put(args[i]); + } + jsonRequest.putOpt("params", array); + jsonRequest.put("id", requestId); + + } catch (Exception e) { + throw new RuntimeException("Unable to parse JSON parameter", e); + } + + post = new HttpPost(uri); + String req = jsonRequest.toString(); + StringEntity entity = new StringEntity(req, "application/json; charset\"UTF-8\""); + post.setEntity(entity); + + response = httpClient.execute(post); + + if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { + //success + JSONObject jsonResponse = null; + try { + + jsonResponse = new JSONObject(EntityUtils.toString(response.getEntity())); + + //check requestId + if (! jsonResponse.getString("id").equalsIgnoreCase(requestId)) { + throw new RuntimeException("Invalid response id:" + requestId ); + } + + msg.setBody(jsonResponse.get("result")); + } catch (Exception e) { + //FIXME Exceptions are not handled correctly here + // They should be reported to the client JavaScript as proper + // JavaScript exceptions. + throw new RuntimeException("Unable to parse response", e); + } + } + } catch (Exception e) { + e.printStackTrace(); + msg.setFaultBody(e); + } + + return msg; + } + + private static JSONObject getJSONRequest(Message msg) { + + JSONObject jsonRequest = null;; + Object[] args = null; + Object id = null; + try { + // Extract the method + jsonRequest = new JSONObject(); + jsonRequest.putOpt("method", "Service" + "." + msg.getOperation().getName()); + + // Extract the arguments + args = msg.getBody(); + JSONArray array = new JSONArray(); + for (int i = 0; i < args.length; i++) { + array.put(args[i]); + } + jsonRequest.putOpt("params", array); + id = jsonRequest.put("id", "1"); + + } catch (Exception e) { + throw new RuntimeException("Unable to parse JSON parameter", e); + } + + return jsonRequest; + } + + public boolean allowsPassByReference() { + return true; + } +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingProviderFactory.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingProviderFactory.java new file mode 100644 index 0000000000..4059d5a1f0 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCBindingProviderFactory.java @@ -0,0 +1,65 @@ +/* + * 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.jsonrpc.provider; + +import org.apache.tuscany.sca.assembly.Endpoint; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.host.http.ServletHostExtensionPoint; +import org.apache.tuscany.sca.invocation.MessageFactory; +import org.apache.tuscany.sca.provider.BindingProviderFactory; +import org.apache.tuscany.sca.provider.ReferenceBindingProvider; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; + +/** + * JSON-RPC Provider Factory + * + * @version $Rev$ $Date$ + */ +public class JSONRPCBindingProviderFactory implements BindingProviderFactory<JSONRPCBinding> { + + private MessageFactory messageFactory; + private ServletHost servletHost; + + public JSONRPCBindingProviderFactory(ExtensionPointRegistry extensionPoints) { + ServletHostExtensionPoint servletHosts = extensionPoints.getExtensionPoint(ServletHostExtensionPoint.class); + this.servletHost = servletHosts.getServletHosts().get(0); + + FactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class); + messageFactory = modelFactories.getFactory(MessageFactory.class); + } + + public ReferenceBindingProvider createReferenceBindingProvider(EndpointReference endpointReference) { + + return new JSONRPCReferenceBindingProvider(endpointReference); + } + + public ServiceBindingProvider createServiceBindingProvider(Endpoint endpoint) { + return new JSONRPCServiceBindingProvider(endpoint, messageFactory, servletHost); + } + + public Class<JSONRPCBinding> getModelType() { + return JSONRPCBinding.class; + } + +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCClientInvoker.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCClientInvoker.java new file mode 100644 index 0000000000..d25861b610 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCClientInvoker.java @@ -0,0 +1,74 @@ +/* + * 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.jsonrpc.provider; + +import java.lang.reflect.Method; + +import org.apache.http.client.HttpClient; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.java.JavaOperation; +import org.apache.tuscany.sca.invocation.DataExchangeSemantics; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.jabsorb.client.Client; +import org.jabsorb.client.Session; +import org.jabsorb.client.TransportRegistry; + +/** + * Invoker for the JSONRPC Binding + * + * @version $Rev$ $Date$ + */ +public class JSONRPCClientInvoker implements Invoker, DataExchangeSemantics { + private EndpointReference endpointReference; + private Operation operation; + private Method method; + private String uri; + + public JSONRPCClientInvoker(EndpointReference endpointReference, Operation operation, HttpClient httpClient) { + this.endpointReference = endpointReference; + this.operation = operation; + this.method = ((JavaOperation)operation).getJavaMethod(); + this.uri = ((JSONRPCBinding)endpointReference.getBinding()).getURI(); + } + + public Message invoke(Message msg) { + Session session = TransportRegistry.i().createSession(uri); + Client client = new Client(session); + Object proxy = client.openProxy("", method.getDeclaringClass()); + + try { + Object result = client.invoke(proxy, method, (Object[])msg.getBody()); + msg.setBody(result); + } catch (Exception e) { + msg.setFaultBody(e); + } finally { + client.closeProxy(proxy); + session.close(); + } + return msg; + } + + public boolean allowsPassByReference() { + return true; + } +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCDatabindingHelper.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCDatabindingHelper.java new file mode 100644 index 0000000000..3cdcb32830 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCDatabindingHelper.java @@ -0,0 +1,61 @@ +/* + * 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.jsonrpc.provider; + +import java.util.List; + +import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding; +import org.apache.tuscany.sca.databinding.json.JSONDataBinding; +import org.apache.tuscany.sca.interfacedef.DataType; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.Operation; + +/** + * JSONRPC Binding helper class to handle setting the proper + * data binding in the interface contract for JSONRPC + * services and references + * + * @version $Rev$ $Date$ + */ +public class JSONRPCDatabindingHelper { + + @SuppressWarnings("unchecked") + static void setDataBinding(Interface interfaze) { + List<Operation> operations = interfaze.getOperations(); + for (Operation operation : operations) { + operation.setDataBinding(JSONDataBinding.NAME); + DataType<List<DataType>> inputType = operation.getInputType(); + if (inputType != null) { + List<DataType> logical = inputType.getLogical(); + for (DataType inArg : logical) { + if (!SimpleJavaDataBinding.NAME.equals(inArg.getDataBinding())) { + inArg.setDataBinding(JSONDataBinding.NAME); + } + } + } + DataType outputType = operation.getOutputType(); + if (outputType != null) { + if (!SimpleJavaDataBinding.NAME.equals(outputType.getDataBinding())) { + outputType.setDataBinding(JSONDataBinding.NAME); + } + } + } + } +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCReferenceBindingProvider.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCReferenceBindingProvider.java new file mode 100644 index 0000000000..e5d24f1e1c --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCReferenceBindingProvider.java @@ -0,0 +1,107 @@ +/* + * 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.jsonrpc.provider; + +import org.apache.http.HttpHost; +import org.apache.http.client.HttpClient; +import org.apache.http.conn.ClientConnectionManager; +import org.apache.http.conn.scheme.PlainSocketFactory; +import org.apache.http.conn.scheme.Scheme; +import org.apache.http.conn.scheme.SchemeRegistry; +import org.apache.http.impl.client.DefaultHttpClient; +import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager; +import org.apache.http.params.BasicHttpParams; +import org.apache.http.params.HttpConnectionParams; +import org.apache.http.params.HttpParams; +import org.apache.http.params.HttpProtocolParams; +import org.apache.http.protocol.HTTP; +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; +import org.apache.tuscany.sca.runtime.RuntimeComponentReference; + +/** + * Implementation of the JSONRPC Binding Provider for References + * + * @version $Rev$ $Date$ + */ +public class JSONRPCReferenceBindingProvider implements ReferenceBindingProvider { + + private EndpointReference endpointReference; + private RuntimeComponentReference reference; + private InterfaceContract referenceContract; + + private HttpClient httpClient; + + public JSONRPCReferenceBindingProvider(EndpointReference endpointReference) { + + this.endpointReference = endpointReference; + this.reference = (RuntimeComponentReference) endpointReference.getReference(); + + //clone the service contract to avoid databinding issues + /* + try { + this.referenceContract = (InterfaceContract)reference.getInterfaceContract().clone(); + } catch(CloneNotSupportedException e) { + this.referenceContract = reference.getInterfaceContract(); + } + + JSONRPCDatabindingHelper.setDataBinding(referenceContract.getInterface()); + */ + + // Create an HTTP client + HttpParams defaultParameters = new BasicHttpParams(); + //defaultParameters.setIntParameter(HttpConnectionManagerParams.MAX_TOTAL_CONNECTIONS, 10); + HttpProtocolParams.setContentCharset(defaultParameters, HTTP.UTF_8); + HttpConnectionParams.setConnectionTimeout(defaultParameters, 60000); + HttpConnectionParams.setSoTimeout(defaultParameters, 60000); + + SchemeRegistry supportedSchemes = new SchemeRegistry(); + supportedSchemes.register(new Scheme(HttpHost.DEFAULT_SCHEME_NAME, PlainSocketFactory.getSocketFactory(), 80)); + + ClientConnectionManager connectionManager = new ThreadSafeClientConnManager(defaultParameters, supportedSchemes); + + httpClient = new DefaultHttpClient(connectionManager, defaultParameters); + } + + public InterfaceContract getBindingInterfaceContract() { + //return referenceContract; + return reference.getInterfaceContract(); + } + + public Invoker createInvoker(Operation operation) { + return new JSONRPCClientInvoker(endpointReference, operation, httpClient); + } + + public void start() { + // TODO Provide support for JSONRPC References + } + + public void stop() { + // TODO Provide support for JSONRPC References + } + + public boolean supportsOneWayInvocation() { + return false; + } + +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java new file mode 100644 index 0000000000..dca4965378 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java @@ -0,0 +1,124 @@ +/* + * 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.jsonrpc.provider; + +import java.util.ArrayList; +import java.util.List; + +import org.apache.tuscany.sca.assembly.Endpoint; +import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; +import org.apache.tuscany.sca.databinding.json.JSONDataBinding; +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.java.JavaInterface; +import org.apache.tuscany.sca.invocation.MessageFactory; +import org.apache.tuscany.sca.provider.ServiceBindingProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; + + +/** + * Implementation of the JSONRPC Binding Provider for Services + * + * @version $Rev$ $Date$ + */ +public class JSONRPCServiceBindingProvider implements ServiceBindingProvider { + private MessageFactory messageFactory; + + private Endpoint endpoint; + private RuntimeComponent component; + private RuntimeComponentService service; + private InterfaceContract serviceContract; + private JSONRPCBinding binding; + private ServletHost servletHost; + private List<String> servletMappings = new ArrayList<String>(); + + public JSONRPCServiceBindingProvider(Endpoint endpoint, + MessageFactory messageFactory, + ServletHost servletHost) { + this.endpoint = endpoint; + this.component = (RuntimeComponent)endpoint.getComponent(); + this.service = (RuntimeComponentService)endpoint.getService(); + this.binding = (JSONRPCBinding) endpoint.getBinding(); + this.messageFactory = messageFactory; + this.servletHost = servletHost; + + //clone the service contract to avoid databinding issues + try { + this.serviceContract = (InterfaceContract)service.getInterfaceContract().clone(); + } catch(CloneNotSupportedException e) { + this.serviceContract = service.getInterfaceContract(); + } + + JSONRPCDatabindingHelper.setDataBinding(serviceContract.getInterface()); + } + + public InterfaceContract getBindingInterfaceContract() { + return service.getInterfaceContract(); + } + + public boolean supportsOneWayInvocation() { + return false; + } + + public void start() { + // Set default databinding to json + serviceContract.getInterface().resetDataBinding(JSONDataBinding.NAME); + + // Determine the service business interface + Class<?> serviceInterface = getTargetJavaClass(serviceContract.getInterface()); + + // Create a Java proxy to the target service + Object proxy = component.getComponentContext().createSelfReference(serviceInterface, service).getService(); + + // Create and register a Servlet for this service + JSONRPCServiceServlet serviceServlet = + new JSONRPCServiceServlet(messageFactory, binding, service, serviceContract, serviceInterface, proxy); + String mapping = binding.getURI(); + if (!mapping.endsWith("/")) { + mapping += "/"; + } + if (!mapping.endsWith("*")) { + mapping += "*"; + } + + servletHost.addServletMapping(mapping, serviceServlet); + servletMappings.add(mapping); + servletHost.addServletMapping(binding.getURI(), serviceServlet); + servletMappings.add(binding.getURI()); + } + + public void stop() { + + // Remove the Servlet mappings we've added + for (String mapping: servletMappings) { + servletHost.removeServletMapping(mapping); + } + + } + + private Class<?> getTargetJavaClass(Interface targetInterface) { + // TODO: right now assume that the target is always a Java + // Implementation. Need to figure out how to generate Java + // Interface in cases where the target is not a Java Implementation + return ((JavaInterface)targetInterface).getJavaClass(); + } +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceServlet.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceServlet.java new file mode 100644 index 0000000000..71d335acc8 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceServlet.java @@ -0,0 +1,314 @@ +/* + * 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.jsonrpc.provider; + +import java.io.BufferedReader; +import java.io.CharArrayWriter; +import java.io.IOException; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.io.UnsupportedEncodingException; +import java.util.List; + +import javax.servlet.ServletConfig; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.invocation.MessageFactory; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; +import org.apache.tuscany.sca.runtime.RuntimeWire; +import org.jabsorb.JSONRPCBridge; +import org.jabsorb.JSONRPCResult; +import org.jabsorb.JSONRPCServlet; +import org.json.JSONArray; +import org.json.JSONException; +import org.json.JSONObject; +import org.oasisopen.sca.ServiceRuntimeException; + +/** + * Servlet that handles JSON-RPC requests invoking SCA services. + * + * There is an instance of this Servlet for each <binding.jsonrpc> + * + * @version $Rev$ $Date$ + */ +public class JSONRPCServiceServlet extends JSONRPCServlet { + private static final long serialVersionUID = 1L; + + transient MessageFactory messageFactory; + + transient Binding binding; + transient String serviceName; + transient Object serviceInstance; + transient RuntimeComponentService componentService; + transient InterfaceContract serviceContract; + transient Class<?> serviceInterface; + + public JSONRPCServiceServlet(MessageFactory messageFactory, + Binding binding, + RuntimeComponentService componentService, + InterfaceContract serviceContract, + Class<?> serviceInterface, + Object serviceInstance) { + this.messageFactory = messageFactory; + this.binding = binding; + this.serviceName = binding.getName(); + this.componentService = componentService; + this.serviceContract = serviceContract; + this.serviceInterface = serviceInterface; + this.serviceInstance = serviceInstance; + } + + /** + * Override to do nothing as the JSONRPCServlet is setup by the + * service method in this class. + */ + @Override + public void init(ServletConfig config) { + } + + @Override + public void service(HttpServletRequest request, HttpServletResponse response) throws IOException { + if ("smd".equals(request.getQueryString())) { + handleSMDRequest(request, response); + } else { + try { + handleServiceRequest(request, response); + + } catch(RuntimeException re) { + if (re.getCause() instanceof javax.security.auth.login.LoginException) { + response.setHeader("WWW-Authenticate", "BASIC realm=\"" + "ldap-realm" + "\""); + response.sendError(HttpServletResponse.SC_UNAUTHORIZED); + } + } finally { + HttpSession session = request.getSession(false); + if (session != null) { + session.removeAttribute("JSONRPCBridge"); + } + } + } + } + + private void handleServiceRequest(HttpServletRequest request, HttpServletResponse response) throws IOException { + // Encode using UTF-8, although We are actually ASCII clean as + // all unicode data is JSON escaped using backslash u. This is + // less data efficient for foreign character sets but it is + // needed to support naughty browsers such as Konqueror and Safari + // which do not honour the charset set in the response + response.setContentType("text/plain;charset=utf-8"); + OutputStream out = response.getOutputStream(); + + // Decode using the charset in the request if it exists otherwise + // use UTF-8 as this is what all browser implementations use. + // The JSON-RPC-Java JavaScript client is ASCII clean so it + // although here we can correctly handle data from other clients + // that do not escape non ASCII data + String charset = request.getCharacterEncoding(); + if (charset == null) { + charset = "UTF-8"; + } + BufferedReader in = new BufferedReader(new InputStreamReader(request.getInputStream(), charset)); + + // Read the request + CharArrayWriter data = new CharArrayWriter(); + char[] buf = new char[4096]; + int ret; + while ((ret = in.read(buf, 0, 4096)) != -1) { + data.write(buf, 0, ret); + } + + JSONObject jsonReq = null; + String method = null; + try { + jsonReq = new JSONObject(data.toString()); + method = jsonReq.getString("method"); + } catch (Exception e) { + //FIXME Exceptions are not handled correctly here + // They should be reported to the client JavaScript as proper + // JavaScript exceptions. + throw new RuntimeException("Unable to parse request", e); + } + + + // check if it's a system request + // or a method invocation + byte[] bout; + try { + if (method.startsWith("system.")) { + bout = handleJSONRPCSystemInvocation(request, response, data.toString()); + } else { + bout = handleJSONRPCMethodInvocation(request, response, jsonReq); + } + } catch (JSONException e) { + throw new RuntimeException(e); + } + + // Send response to client + out.write(bout); + out.flush(); + out.close(); + } + + /** + * handles requests for the SMD descriptor for a service + */ + protected void handleSMDRequest(HttpServletRequest request, HttpServletResponse response) throws IOException, UnsupportedEncodingException { + String serviceUrl = request.getRequestURL().toString(); + String smd = JavaToSmd.interfaceToSmd(serviceInterface, serviceUrl); + + response.setContentType("text/plain;charset=utf-8"); + OutputStream out = response.getOutputStream(); + byte[] bout = smd.getBytes("UTF-8"); + out.write(bout); + out.flush(); + out.close(); + } + + protected byte[] handleJSONRPCSystemInvocation(HttpServletRequest request, HttpServletResponse response, String requestData) throws IOException, + UnsupportedEncodingException, JSONException { + /* + * Create a new bridge for every request to avoid all the problems with + * JSON-RPC-Java storing the bridge in the session + */ + HttpSession session = request.getSession(); + + JSONRPCBridge jsonrpcBridge = new JSONRPCBridge(); + jsonrpcBridge.registerObject("Service", serviceInstance, serviceInterface); + session.setAttribute("JSONRPCBridge", jsonrpcBridge); + + org.json.JSONObject jsonReq = null; + JSONRPCResult jsonResp = null; + jsonReq = new org.json.JSONObject(requestData); + + String method = jsonReq.getString("method"); + if ((method != null) && (method.indexOf('.') < 0)) { + jsonReq.putOpt("method", "Service" + "." + method); + } + + // invoke the request + jsonResp = jsonrpcBridge.call(new Object[] {request}, jsonReq); + + return jsonResp.toString().getBytes("UTF-8"); + } + + protected byte[] handleJSONRPCMethodInvocation(HttpServletRequest request, HttpServletResponse response, JSONObject jsonReq) throws IOException, + UnsupportedEncodingException { + + String method = null; + Object[] args = null; + Object id = null; + try { + // Extract the method + method = jsonReq.getString("method"); + if ((method != null) && (method.indexOf('.') < 0)) { + jsonReq.putOpt("method", "Service" + "." + method); + } + + // Extract the arguments + JSONArray array = jsonReq.getJSONArray("params"); + args = new Object[array.length()]; + for (int i = 0; i < args.length; i++) { + args[i] = array.get(i); + } + id = jsonReq.get("id"); + + } catch (Exception e) { + throw new RuntimeException("Unable to find json method name", e); + } + + // invoke the request + RuntimeWire wire = componentService.getRuntimeWire(binding, serviceContract); + Operation jsonOperation = findOperation(method); + Object result = null; + + + // Invoke the get operation on the service implementation + Message requestMessage = messageFactory.createMessage(); + requestMessage.setOperation(jsonOperation); + + requestMessage.getHeaders().add(request); + + requestMessage.setBody(args); + + //result = wire.invoke(jsonOperation, args); + Message responseMessage = null; + try { + responseMessage = wire.getInvocationChain(jsonOperation).getHeadInvoker().invoke(requestMessage); + } catch (RuntimeException re) { + if (re.getCause() instanceof javax.security.auth.login.LoginException) { + throw re; + } else { + //some other exception + JSONRPCResult errorResult = new JSONRPCResult(JSONRPCResult.CODE_REMOTE_EXCEPTION, id, re); + return errorResult.toString().getBytes("UTF-8"); + } + } + + if (!responseMessage.isFault()) { + //successful execution of the invocation + try { + result = responseMessage.getBody(); + JSONObject jsonResponse = new JSONObject(); + jsonResponse.put("result", result); + jsonResponse.putOpt("id", id); + //get response to send to client + return jsonResponse.toString().getBytes("UTF-8"); + } catch (Exception e) { + throw new ServiceRuntimeException("Unable to create JSON response", e); + } + } else { + //exception thrown while executing the invocation + Throwable exception = (Throwable)responseMessage.getBody(); + JSONRPCResult errorResult = new JSONRPCResult(JSONRPCResult.CODE_REMOTE_EXCEPTION, id, exception ); + return errorResult.toString().getBytes("UTF-8"); + } + + } + + /** + * Find the operation from the component service contract + * @param componentService + * @param method + * @return + */ + private Operation findOperation(String method) { + if (method.contains(".")) { + method = method.substring(method.lastIndexOf(".") + 1); + } + + List<Operation> operations = serviceContract.getInterface().getOperations(); + //componentService.getBindingProvider(binding).getBindingInterfaceContract().getInterface().getOperations(); + + + Operation result = null; + for (Operation o : operations) { + if (o.getName().equalsIgnoreCase(method)) { + result = o; + break; + } + } + + return result; + } +} diff --git a/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JavaToSmd.java b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JavaToSmd.java new file mode 100644 index 0000000000..64339fda7b --- /dev/null +++ b/tags/java/sca/2.0-M4-RC3/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JavaToSmd.java @@ -0,0 +1,56 @@ +/* + * 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.jsonrpc.provider; + +import java.lang.reflect.Method; + +/** + * Utility class to create a Simple Method Description (SMD) descriptor + * from a Java class. See http://dojo.jot.com/SMD. + * + * TODO: Change to work from the Tuscany Interface instead of a Java class + * + * @version $Rev$ $Date$ + */ +class JavaToSmd { + + static String interfaceToSmd(Class<?> klazz, String serviceUrl) { + String name = klazz.getSimpleName(); + Method[] methods = klazz.getMethods(); + + StringBuffer smdSb = new StringBuffer(); + smdSb.append("{\"SMDVersion\":\".1\",\"objectName\":\"" + name + "\",\"serviceType\":\"JSON-RPC\",\"serviceURL\":\""+ serviceUrl + "\",\"methods\":["); + for (int i = 0; i < methods.length; i++) { + if (i != 0) smdSb.append(","); + Class<?>[] params = methods[i].getParameterTypes(); + smdSb.append("{\"name\":\""+methods[i].getName() + "\",\"parameters\":["); + for (int j = 0; j < params.length; j++) { + if (j != 0) smdSb.append(","); + // right now Dojo doesn't look at the type value, so we'll default it to STRING + // also, since we can't introspect the method parameter names we'll just create an incrementing parameter name + smdSb.append("{\"name\":\"param" + j + "\",\"type\":\"STRING\"}"); + } + smdSb.append("]}"); + } + smdSb.append("]}"); + + return smdSb.toString(); + } + +} |