/*
* 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;
}
}