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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/DefaultSCABindingMapper.java | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/DefaultSCABindingMapper.java b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/DefaultSCABindingMapper.java new file mode 100644 index 0000000000..4105c74efc --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/binding-sca-runtime/src/main/java/org/apache/tuscany/sca/binding/sca/provider/DefaultSCABindingMapper.java @@ -0,0 +1,220 @@ +/* + * 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.sca.provider; + +import java.io.StringReader; +import java.util.Arrays; +import java.util.List; +import java.util.Map; +import java.util.logging.Logger; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.sca.assembly.Base; +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.assembly.builder.BindingBuilder; +import org.apache.tuscany.sca.assembly.builder.BuilderContext; +import org.apache.tuscany.sca.assembly.builder.BuilderExtensionPoint; +import org.apache.tuscany.sca.common.xml.stax.StAXHelper; +import org.apache.tuscany.sca.contribution.processor.ContributionReadException; +import org.apache.tuscany.sca.contribution.processor.ProcessorContext; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.extensibility.ServiceDeclarationParser; +import org.apache.tuscany.sca.policy.PolicySubject; +import org.apache.tuscany.sca.provider.ProviderFactory; +import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint; +import org.apache.tuscany.sca.runtime.DomainRegistryFactory; +import org.apache.tuscany.sca.runtime.DomainRegistryFactoryExtensionPoint; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; +import org.apache.tuscany.sca.runtime.RuntimeEndpointReference; +import org.oasisopen.sca.ServiceRuntimeException; + +/** + * Default implementation of SCABindingMapper + */ +public class DefaultSCABindingMapper implements SCABindingMapper { + private final static Logger logger = Logger.getLogger(DefaultSCABindingMapper.class.getName()); + protected ExtensionPointRegistry registry; + protected ProviderFactoryExtensionPoint providerFactories; + protected StAXArtifactProcessor processor; + protected BindingBuilder builder; + protected QName mappedBinding; + private Binding bindingTemplate; + private boolean remotable; + + public DefaultSCABindingMapper(ExtensionPointRegistry registry, Map<String, String> attributes) { + this.registry = registry; + if (attributes != null) { + String qname = attributes.get("mappedBinding"); + if (qname != null) { + mappedBinding = ServiceDeclarationParser.getQName(qname); + } + } + if (mappedBinding == null) { + String qname = + System.getProperty("org.apache.tuscany.sca.binding.sca.provider.SCABindingMapper.mappedBinding"); + if (qname != null) { + mappedBinding = ServiceDeclarationParser.getQName(qname); + } else { + // By default, mapping to binding.ws or if thats not available then binding.rmi + mappedBinding = new QName(Base.SCA11_TUSCANY_NS, "binding.hazelcast"); + if (registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class).getProcessor(mappedBinding) == null) { + mappedBinding = new QName(Base.SCA11_NS, "binding.ws"); + if (registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class).getProcessor(mappedBinding) == null) { + mappedBinding = new QName(Base.SCA11_TUSCANY_NS, "binding.rmi"); + } + } + } + } + + providerFactories = registry.getExtensionPoint(ProviderFactoryExtensionPoint.class); + StAXArtifactProcessorExtensionPoint processors = + registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); + processor = processors.getProcessor(mappedBinding); + if (processor == null) { + logger.warning("Mapped binding for binding.sca is not supported: " + mappedBinding); + } + + try { + if (processor != null) { + bindingTemplate = createDelegatingBinding(); + ProviderFactory providerFactory = providerFactories.getProviderFactory(bindingTemplate.getClass()); + if (providerFactory == null) { + logger.warning("Mapped binding for binding.sca is not supported: " + mappedBinding); + processor = null; + } + } + } catch (Throwable e) { + throw new ServiceRuntimeException(e); + } + BuilderExtensionPoint builders = registry.getExtensionPoint(BuilderExtensionPoint.class); + builder = builders.getBindingBuilder(mappedBinding); + remotable = isDistributed() && processor != null; + } + + // FIXME: [rfeng] This is a HACK to check if we should make binding.sca remotable + // by checking if we have distributed domain registry present + private boolean isDistributed() { + DomainRegistryFactoryExtensionPoint factories = + registry.getExtensionPoint(DomainRegistryFactoryExtensionPoint.class); + List<DomainRegistryFactory> list = factories.getDomainRegistryFactories(); + if (list.size() == 1) { + String[] schemes = list.get(0).getSupportedSchemes(); + if (Arrays.asList(schemes).contains("local")) { + return false; + } + } + return true; + } + + public RuntimeEndpoint map(RuntimeEndpoint endpoint) { + if (processor == null) { + return null; + } + // create a copy of the endpoint but with the web service binding in + RuntimeEndpoint ep = null; + try { + ep = (RuntimeEndpoint)endpoint.clone(); + } catch (Exception ex) { + // we know we can clone endpoint references + } + + Binding binding = map(endpoint.getBinding()); + ep.setBinding(binding); + if (builder != null) { + builder.build(ep.getComponent(), ep.getService(), binding, new BuilderContext(registry), false); + } + return ep; + } + + public RuntimeEndpointReference map(RuntimeEndpointReference endpointReference) { + if (processor == null) { + return null; + } + // create a copy of the endpoint but with the web service binding in + RuntimeEndpointReference epr = null; + try { + epr = (RuntimeEndpointReference)endpointReference.clone(); + } catch (Exception ex) { + // we know we can clone endpoint references + } + + Binding binding = map(endpointReference.getBinding()); + epr.setBinding(binding); + + // epr.setTargetEndpoint(map((RuntimeEndpoint)epr.getTargetEndpoint())); + + if (builder != null) { + builder.build(epr.getComponent(), epr.getReference(), binding, new BuilderContext(registry), false); + } + + return epr; + } + + protected Binding map(Binding scaBinding) { + try { + Binding binding = createDelegatingBinding(); + binding.setName(scaBinding.getName()); + binding.setURI(scaBinding.getURI()); + binding.setOperationSelector(scaBinding.getOperationSelector()); + binding.setRequestWireFormat(scaBinding.getRequestWireFormat()); + binding.setResponseWireFormat(scaBinding.getResponseWireFormat()); + if (binding instanceof PolicySubject && scaBinding instanceof PolicySubject) { + PolicySubject subject1 = (PolicySubject)binding; + PolicySubject subject2 = (PolicySubject)scaBinding; + subject1.getPolicySets().addAll(subject2.getPolicySets()); + subject1.getRequiredIntents().addAll(subject2.getRequiredIntents()); + } + return binding; + } catch (Throwable e) { + throw new ServiceRuntimeException(e); + } + + } + + private Binding createDelegatingBinding() throws XMLStreamException, ContributionReadException { + if (bindingTemplate != null) { + try { + return (Binding)bindingTemplate.clone(); + } catch (CloneNotSupportedException e) { + // Ignore + } + } + // This is a hack to create an instance of the binding using the XML QName + StringBuffer xml = new StringBuffer(); + xml.append("<").append(mappedBinding.getLocalPart()).append(" xmlns:b=\"").append(mappedBinding + .getNamespaceURI()).append("\"/>"); + + StAXHelper staxHelper = StAXHelper.getInstance(registry); + XMLStreamReader reader = staxHelper.createXMLStreamReader(new StringReader(xml.toString())); + reader.nextTag(); + Binding binding = (Binding)processor.read(reader, new ProcessorContext(registry)); + return binding; + } + + public boolean isRemotable() { + return remotable; + } + +} |