diff options
Diffstat (limited to 'sca-java-1.x/branches/sca-java-0.99/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/JSONRPCService.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-0.99/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/JSONRPCService.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.99/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/JSONRPCService.java b/sca-java-1.x/branches/sca-java-0.99/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/JSONRPCService.java new file mode 100644 index 0000000000..94bc6a5d6b --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.99/modules/binding-jsonrpc/src/main/java/org/apache/tuscany/sca/binding/jsonrpc/JSONRPCService.java @@ -0,0 +1,127 @@ +/* + * 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; + +import java.net.URI; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.core.invocation.JDKProxyFactory; +import org.apache.tuscany.sca.core.invocation.ProxyFactory; +import org.apache.tuscany.sca.extension.helper.ComponentLifecycle; +import org.apache.tuscany.sca.host.http.ServletHost; +import org.apache.tuscany.sca.interfacedef.Interface; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; + +/** + * Implementation of the JSONRPC binding provider. + * + * There are multiple servlets used to support the JSON-RPC binidng. + * One servlet to handle requests for the scaDomain script and seperate + * servlets for each SCA <service> which uses <binding.jsonrpc>. + */ +public class JSONRPCService implements ComponentLifecycle { + + private RuntimeComponentService service; + private ServletHost servletHost; + private Binding binding; + + public static final String SERVICE_PREFIX = "/SCADomain/"; + + // 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 + public static final String SCA_DOMAIN_SCRIPT = SERVICE_PREFIX + "scaDomain.js"; + + + public JSONRPCService(RuntimeComponent component, + RuntimeComponentService service, + Binding b, + JSONRPCBinding binding, + ServletHost servletHost) { + this.service = service; + this.binding = b; + this.servletHost = servletHost; + } + + public void start() { + + // Determine the service business interface + Class<?> serviceInterface = getTargetJavaClass(service.getInterfaceContract().getInterface()); + + // Create a Java proxy to the target service + ProxyFactory proxyFactory = new JDKProxyFactory(); + Object proxy = proxyFactory.createProxy(serviceInterface, service.getRuntimeWire(binding)); + + // Create and register a servlet for this service + JSONRPCServiceServlet serviceServlet = new JSONRPCServiceServlet(binding.getName(), serviceInterface, proxy); + int port; + servletHost.addServletMapping(binding.getURI(), serviceServlet); + URI uri = URI.create(binding.getURI()); + port = uri.getPort(); + if (port == -1) + port = 8080; + + // get the ScaDomainScriptServlet, if it doesn't yet exist create one + // this uses removeServletMapping / addServletMapping as theres no getServletMapping facility + URI domainURI = URI.create("http://localhost:" + port + SCA_DOMAIN_SCRIPT); + ScaDomainScriptServlet scaDomainServlet = (ScaDomainScriptServlet) servletHost.removeServletMapping(domainURI.toString()); + if (scaDomainServlet == null) { + scaDomainServlet = new ScaDomainScriptServlet(); + } + servletHost.addServletMapping(domainURI.toString(), scaDomainServlet); + + // Add this service to the scadomain script servlet + scaDomainServlet.addService(binding.getName()); + + } + + public void stop() { + + // Unregister from the service servlet mapping + int port; + servletHost.removeServletMapping(binding.getURI()); + URI uri = URI.create(binding.getURI()); + port = uri.getPort(); + if (port == -1) + port = 8080; + + // Unregister the service from the scaDomain script servlet + // don't unregister the scaDomain script servlet if it still has other service names + URI domainURI = URI.create("http://localhost:" + port + SCA_DOMAIN_SCRIPT); + ScaDomainScriptServlet scaDomainServlet = (ScaDomainScriptServlet) servletHost.removeServletMapping(domainURI.toString()); + if (scaDomainServlet != null) { + scaDomainServlet.removeService(binding.getName()); + // put it back if there are still other services registered with the servlet + if (scaDomainServlet.getServiceNames().size() > 0) { + servletHost.addServletMapping(domainURI.toString(), scaDomainServlet); + } + } + } + + protected 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(); + } + +} |