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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta4-RC1/modules/domain-hazelcast/src/main/java/org/apache/tuscany/sca/binding/hazelcast/ReferenceInvoker.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta4-RC1/modules/domain-hazelcast/src/main/java/org/apache/tuscany/sca/binding/hazelcast/ReferenceInvoker.java b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/domain-hazelcast/src/main/java/org/apache/tuscany/sca/binding/hazelcast/ReferenceInvoker.java new file mode 100644 index 0000000000..1585684691 --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta4-RC1/modules/domain-hazelcast/src/main/java/org/apache/tuscany/sca/binding/hazelcast/ReferenceInvoker.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.hazelcast; + +import java.io.IOException; +import java.util.concurrent.Callable; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.FutureTask; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.common.xml.dom.DOMHelper; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.interfacedef.util.FaultException; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.invocation.MessageFactory; +import org.apache.tuscany.sca.registry.hazelcast.HazelcastDomainRegistry; +import org.apache.tuscany.sca.runtime.DomainRegistryFactory; +import org.apache.tuscany.sca.runtime.DomainRegistry; +import org.apache.tuscany.sca.runtime.ExtensibleDomainRegistryFactory; +import org.oasisopen.sca.ServiceRuntimeException; +import org.w3c.dom.Document; +import org.w3c.dom.Node; +import org.xml.sax.SAXException; + +import com.hazelcast.core.DistributedTask; +import com.hazelcast.core.Member; + +public class ReferenceInvoker implements Invoker { + + HazelcastDomainRegistry hzRegistry; + DOMHelper domHelper; + String serviceURI; + private Operation operation; + MessageFactory messageFactory; + + public ReferenceInvoker(ExtensionPointRegistry extensionsRegistry, String serviceURI, Operation operation) { + this.serviceURI = serviceURI; + this.operation = operation; + DomainRegistryFactory domainRegistryFactory = ExtensibleDomainRegistryFactory.getInstance(extensionsRegistry); + for (DomainRegistry r : domainRegistryFactory.getEndpointRegistries()) { + if (r instanceof HazelcastDomainRegistry) { + hzRegistry = (HazelcastDomainRegistry)r; + break; + } + } + this.domHelper = DOMHelper.getInstance(extensionsRegistry); + FactoryExtensionPoint modelFactories = extensionsRegistry.getExtensionPoint(FactoryExtensionPoint.class); + this.messageFactory = modelFactories.getFactory(MessageFactory.class); + } + + public Message invoke(Message msg) { + Member owningMember = hzRegistry.getOwningMember(serviceURI); + if (owningMember == null) { + throw new ServiceRuntimeException("service not found: " + serviceURI); + } + String requestXML = getRequestXML(msg); + Callable<String> callable = new ServiceInvoker(serviceURI, operation.getName(), requestXML); + FutureTask<String> task = new DistributedTask<String>(callable, owningMember); + ExecutorService executorService = getExecutorService(); + executorService.execute(task); + try { + return getResponseNode(task.get()); + } catch (Exception e) { + throw new ServiceRuntimeException(e); + } + } + + /** + * Hazelcast ExecutorService can't nest invocations so use a separate ExecutorService + * for nested calls. See http://groups.google.com/group/hazelcast/browse_thread/thread/1cc0b943716476e9 + */ + private ExecutorService getExecutorService() { + String threadName = Thread.currentThread().getName(); + if (!threadName.startsWith("hz.executor.") || threadName.indexOf("binding.sca.") == -1) { + return hzRegistry.getHazelcastInstance().getExecutorService("binding.sca.1"); + } else { + String oldName = threadName.substring(threadName.lastIndexOf("binding.sca."), threadName.lastIndexOf(".thread-")); + int x = Integer.parseInt(oldName.substring(oldName.lastIndexOf('.') + 1)); + return hzRegistry.getHazelcastInstance().getExecutorService(oldName.substring(0, 12) + (x + 1)); + } + } + + private String getRequestXML(Message msg) { + Object[] args = msg.getBody(); + String msgXML = domHelper.saveAsString((Node)args[0]); + return msgXML; + } + + private Message getResponseNode(String responseXML) throws IOException, SAXException { + Message msg = messageFactory.createMessage(); + if (responseXML.startsWith("DECLAREDEXCEPTION:")) { + Document responseDOM = domHelper.load(responseXML.substring(18)); + FaultException e = new FaultException("remote exception", responseDOM); + Node node = ((Node)responseDOM).getFirstChild(); + e.setFaultName(new QName(node.getNamespaceURI(), node.getLocalName())); + msg.setFaultBody(e); + } else if (responseXML.startsWith("EXCEPTION:")) { + throw new ServiceRuntimeException("Remote exception:" + responseXML.substring(10)); + } else { + Document responseDOM = domHelper.load(responseXML); + msg.setBody(responseDOM); + } + return msg; + } + +} |