diff options
Diffstat (limited to 'sca-java-1.x/tags/1.5.1-RC2/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java')
-rw-r--r-- | sca-java-1.x/tags/1.5.1-RC2/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.5.1-RC2/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java b/sca-java-1.x/tags/1.5.1-RC2/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java new file mode 100644 index 0000000000..909bd7bc19 --- /dev/null +++ b/sca-java-1.x/tags/1.5.1-RC2/modules/binding-jsonrpc-runtime/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/provider/JSONRPCServiceBindingProvider.java @@ -0,0 +1,189 @@ +/* + * 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.net.URI; +import java.util.ArrayList; +import java.util.List; + +import org.apache.tuscany.sca.binding.jsonrpc.JSONRPCBinding; +import org.apache.tuscany.sca.databinding.javabeans.SimpleJavaDataBinding; +import org.apache.tuscany.sca.databinding.json.JSONDataBinding; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.DataType; +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.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 { + + // Path to the scaDomain.js script + // Note: this is the same as the Ajax binding to keep the client code + // the same for clients using either the ajax or jsonrpc binding + private static final String SCA_DOMAIN_SCRIPT = "/SCADomain/scaDomain.js"; + + private MessageFactory messageFactory; + + private RuntimeComponent component; + private RuntimeComponentService service; + private InterfaceContract serviceContract; + private JSONRPCBinding binding; + private ServletHost servletHost; + private List<String> servletMappings = new ArrayList<String>(); + private String domainScriptMapping; + + public JSONRPCServiceBindingProvider(RuntimeComponent component, + RuntimeComponentService service, + JSONRPCBinding binding, + MessageFactory messageFactory, + ServletHost servletHost) { + this.component = component; + this.service = service; + this.binding = binding; + 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(); + } + + 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()); + + // Register service to scaDomain.js + int port; + URI uri = URI.create(servletHost.getURLMapping(binding.getURI()).toString()); + port = uri.getPort(); + if (port == -1) { + port = servletHost.getDefaultPort(); + } + + // get the ScaDomainScriptServlet, if it doesn't yet exist create one + // this uses removeServletMapping / addServletMapping as there is no getServletMapping facility + domainScriptMapping = URI.create("http://localhost:" + port + SCA_DOMAIN_SCRIPT).toString(); + ScaDomainScriptServlet scaDomainServlet = + (ScaDomainScriptServlet)servletHost.getServletMapping(domainScriptMapping); + if (scaDomainServlet == null) { + scaDomainServlet = new ScaDomainScriptServlet(); + servletHost.addServletMapping(domainScriptMapping, scaDomainServlet); + } + + // Add this service to the SCA Domain Script Servlet + scaDomainServlet.addService(binding.getName()); + } + + public void stop() { + + // Remove the Servlet mappings we've added + for (String mapping: servletMappings) { + servletHost.removeServletMapping(mapping); + } + + // Unregister the service from the SCA Domain Script Servlet + ScaDomainScriptServlet scaDomainServlet = (ScaDomainScriptServlet) servletHost.getServletMapping(domainScriptMapping); + if (scaDomainServlet != null) { + scaDomainServlet.removeService(binding.getName()); + + // Remove the Servlet if there's no more registered services + if (scaDomainServlet.getServiceNames().isEmpty()) { + servletHost.removeServletMapping(domainScriptMapping); + } + } + + } + + 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(); + } + + private 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); + } + } + } + } + + +} |