diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/EndpointSerializerImpl.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/EndpointSerializerImpl.java | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/EndpointSerializerImpl.java b/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/EndpointSerializerImpl.java new file mode 100644 index 0000000000..8cdb0363e9 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/core/src/main/java/org/apache/tuscany/sca/core/assembly/impl/EndpointSerializerImpl.java @@ -0,0 +1,198 @@ +/* + * 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.core.assembly.impl; + +import java.io.StringReader; +import java.io.StringWriter; +import java.util.ArrayList; +import java.util.List; + +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLOutputFactory; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.Endpoint; +import org.apache.tuscany.sca.assembly.EndpointReference; +import org.apache.tuscany.sca.context.CompositeContext; +import org.apache.tuscany.sca.contribution.Contribution; +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.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.definitions.Definitions; +import org.apache.tuscany.sca.policy.BindingType; +import org.apache.tuscany.sca.policy.Intent; +import org.apache.tuscany.sca.policy.PolicySet; +import org.apache.tuscany.sca.policy.util.PolicyHelper; +import org.apache.tuscany.sca.runtime.EndpointSerializer; +import org.apache.tuscany.sca.runtime.RuntimeEndpoint; +import org.oasisopen.sca.ServiceRuntimeException; + +public class EndpointSerializerImpl implements EndpointSerializer { + private ExtensionPointRegistry registry; + private XMLInputFactory inputFactory; + private XMLOutputFactory outputFactory; + private StAXArtifactProcessor<Endpoint> processor; + private StAXArtifactProcessor<EndpointReference> refProcessor; + + public EndpointSerializerImpl(ExtensionPointRegistry registry) { + this.registry = registry; + FactoryExtensionPoint factories = registry.getExtensionPoint(FactoryExtensionPoint.class); + inputFactory = factories.getFactory(XMLInputFactory.class); + outputFactory = factories.getFactory(XMLOutputFactory.class); + StAXArtifactProcessorExtensionPoint processors = + registry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class); + processor = processors.getProcessor(Endpoint.class); + refProcessor = processors.getProcessor(EndpointReference.class); + } + + public Endpoint readEndpoint(String xml) { + try { + //System.out.println("Read Endpoint string >> " + xml); + XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(xml)); + Endpoint result = processor.read(reader, new ProcessorContext(registry)); + result.setRemote(true); + reader.close(); + return result; + } catch (Exception e) { + throw new ServiceRuntimeException(e); + } + } + + public void resolveEndpoint(Endpoint endpoint) { + CompositeContext compositeContext = ((RuntimeEndpoint)endpoint).getCompositeContext(); + + if (compositeContext == null){ + // will be null if this is the SCAClient + return; + } + + Definitions systemDefinitions = compositeContext.getSystemDefinitions(); + if (systemDefinitions != null){ + // Find pre-resolved intents from the system definition + List<Intent> intents = new ArrayList<Intent>(); + + for (Intent intent : endpoint.getRequiredIntents()){ + Intent resolvedIntent = PolicyHelper.getIntent(systemDefinitions, intent.getName()); + + if (resolvedIntent != null){ + intents.add(resolvedIntent); + } else { + // look to see if this intent is provided by the binding + BindingType bindingType = systemDefinitions.getBindingType(endpoint.getBinding().getType()); + + if (bindingType != null){ + for (Intent apIntent : bindingType.getAlwaysProvidedIntents()){ + if (apIntent.getName().equals(intent.getName())){ + resolvedIntent = apIntent; + break; + } + } + + if (resolvedIntent == null){ + for (Intent mpIntent : bindingType.getMayProvidedIntents()){ + if (mpIntent.getName().equals(intent.getName())){ + resolvedIntent = mpIntent; + break; + } + } + } + } + + if (resolvedIntent != null){ + intents.add(resolvedIntent); + } else { + throw new ServiceRuntimeException("Remote endpoint " + + endpoint + + " has intent " + + intent + + " that can't be found in the local system definitions in node " + + compositeContext.getNodeURI()); + } + } + } + + endpoint.getRequiredIntents().clear(); + endpoint.getRequiredIntents().addAll(intents); + + // Find pre-resolved policy sets from the system definition + List<PolicySet> policySets = new ArrayList<PolicySet>(); + + for (PolicySet policySet : endpoint.getPolicySets()){ + PolicySet resolvedPolicySet = PolicyHelper.getPolicySet(systemDefinitions, policySet.getName()); + if (resolvedPolicySet != null){ + policySets.add(resolvedPolicySet); + } else { + throw new ServiceRuntimeException("Remote endpoint " + + endpoint + + " has policy set " + + policySet + + " that can't be found in the local system definitions in node " + + compositeContext.getNodeURI()); + } + } + + endpoint.getPolicySets().clear(); + endpoint.getPolicySets().addAll(policySets); + } + } + + public String write(Endpoint endpoint) { + StringWriter sw = new StringWriter(); + try { + XMLStreamWriter writer = outputFactory.createXMLStreamWriter(sw); + processor.write(endpoint, writer, new ProcessorContext(registry)); + writer.flush(); + writer.close(); + String endpointString = sw.toString(); + //System.out.println("Write Endpoint string >> " + endpointString); + return endpointString; + } catch (Exception e) { + throw new ServiceRuntimeException(e); + } + } + + public EndpointReference readEndpointReference(String xml) { + try { + XMLStreamReader reader = inputFactory.createXMLStreamReader(new StringReader(xml)); + EndpointReference result = refProcessor.read(reader, new ProcessorContext(registry)); + reader.close(); + return result; + } catch (Exception e) { + throw new ServiceRuntimeException(e); + } + } + + public String write(EndpointReference endpointReference) { + StringWriter sw = new StringWriter(); + try { + XMLStreamWriter writer = outputFactory.createXMLStreamWriter(sw); + refProcessor.write(endpointReference, writer, new ProcessorContext(registry)); + writer.flush(); + writer.close(); + return sw.toString(); + } catch (Exception e) { + throw new ServiceRuntimeException(e); + } + } +} |