diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/binding-rest/src/main/java/org/apache/tuscany/sca/binding/rest/xml/RESTBindingProcessor.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/binding-rest/src/main/java/org/apache/tuscany/sca/binding/rest/xml/RESTBindingProcessor.java | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/binding-rest/src/main/java/org/apache/tuscany/sca/binding/rest/xml/RESTBindingProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-rest/src/main/java/org/apache/tuscany/sca/binding/rest/xml/RESTBindingProcessor.java new file mode 100644 index 0000000000..0e8b352a2a --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/binding-rest/src/main/java/org/apache/tuscany/sca/binding/rest/xml/RESTBindingProcessor.java @@ -0,0 +1,320 @@ +/* + * 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.rest.xml; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; +import static javax.xml.stream.XMLStreamConstants.START_ELEMENT; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.Base; +import org.apache.tuscany.sca.assembly.OperationSelector; +import org.apache.tuscany.sca.assembly.WireFormat; +import org.apache.tuscany.sca.binding.rest.RESTBinding; +import org.apache.tuscany.sca.binding.rest.RESTBindingFactory; +import org.apache.tuscany.sca.binding.rest.operationselector.jaxrs.JAXRSOperationSelector; +import org.apache.tuscany.sca.binding.rest.operationselector.jaxrs.JAXRSOperationSelectorFactory; +import org.apache.tuscany.sca.binding.rest.operationselector.rpc.RPCOperationSelector; +import org.apache.tuscany.sca.binding.rest.operationselector.rpc.RPCOperationSelectorFactory; +import org.apache.tuscany.sca.binding.rest.wireformat.json.JSONWireFormat; +import org.apache.tuscany.sca.binding.rest.wireformat.json.JSONWireFormatFactory; +import org.apache.tuscany.sca.binding.rest.wireformat.xml.XMLWireFormat; +import org.apache.tuscany.sca.binding.rest.wireformat.xml.XMLWireFormatFactory; +import org.apache.tuscany.sca.common.http.HTTPHeader; +import org.apache.tuscany.sca.common.http.cors.CORSConfiguration; +import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.ContributionReadException; +import org.apache.tuscany.sca.contribution.processor.ContributionResolveException; +import org.apache.tuscany.sca.contribution.processor.ContributionWriteException; +import org.apache.tuscany.sca.contribution.processor.ProcessorContext; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.StAXAttributeProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; + +/** + * REST Binding Artifact Processor + * + * @version $Rev$ $Date$ + */ +public class RESTBindingProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<RESTBinding> { + private static final QName HEADERS_QNAME = new QName(Base.SCA11_TUSCANY_NS, "http-headers"); + private static final QName HEADER_QNAME = new QName(Base.SCA11_TUSCANY_NS, "header"); + private static final QName RESPONSE_QNAME = new QName(Base.SCA11_TUSCANY_NS, "response"); + + private static final QName WIRE_FORMAT_JSON = new QName(Base.SCA11_TUSCANY_NS, "wireFormat.json"); + private static final QName WIRE_FORMAT_XML = new QName(Base.SCA11_TUSCANY_NS, "wireFormat.xml"); + + private static final QName OPERATION_SELCTOR_RPC = new QName(Base.SCA11_TUSCANY_NS, "operationSelector.rpc"); + private static final QName OPERATION_SELCTOR_JAXRS = new QName(Base.SCA11_TUSCANY_NS, "operationSelector.jaxrs"); + + private static final String NAME = "name"; + private static final String VALUE = "value"; + private static final String URI = "uri"; + private static final String READ_TIMEOUT = "readTimeout"; + private static final String CORS ="isCORS"; + + private RESTBindingFactory restBindingFactory; + private JSONWireFormatFactory jsonWireFormatFactory; + private XMLWireFormatFactory xmlWireFormatFactory; + private JAXRSOperationSelectorFactory jaxrsOperationSelectorFactory; + private RPCOperationSelectorFactory rpcOperationSelectorFactory; + + private StAXArtifactProcessor<Object> extensionProcessor; + + public RESTBindingProcessor(ExtensionPointRegistry extensionPoints, + StAXArtifactProcessor<Object> extensionProcessor, + StAXAttributeProcessor<Object> extensionAttributeProcessor) { + FactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class); + this.restBindingFactory = modelFactories.getFactory(RESTBindingFactory.class); + this.jsonWireFormatFactory = modelFactories.getFactory(JSONWireFormatFactory.class); + this.xmlWireFormatFactory = modelFactories.getFactory(XMLWireFormatFactory.class); + this.jaxrsOperationSelectorFactory = modelFactories.getFactory(JAXRSOperationSelectorFactory.class); + this.rpcOperationSelectorFactory = modelFactories.getFactory(RPCOperationSelectorFactory.class); + + this.extensionProcessor = (StAXArtifactProcessor<Object>)extensionProcessor; + } + + public QName getArtifactType() { + return RESTBinding.TYPE; + } + + public Class<RESTBinding> getModelType() { + return RESTBinding.class; + } + + public RESTBinding read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException, XMLStreamException { + RESTBinding restBinding = restBindingFactory.createRESTBinding(); + + /** + * <tuscany:binding.rest uri="http://localhost:8085/Customer" readTimeout="60000"> + * <tuscany:wireFormat.xml /> + * <tuscany:operationSelector.jaxrs /> + * <tuscany:http-headers> + * <tuscany:header name="Cache-Control" value="no-cache"/> + * <tuscany:header name="Expires" value="-1"/> + * </tuscany:http-headers> + * <tuscany:response> + * <tuscany:wireFormat.json /> + * </tuscany:response> + * </tuscany:binding.rest> + * + */ + while(reader.hasNext()) { + QName elementName = null; + int event = reader.getEventType(); + switch (event) { + case START_ELEMENT: + elementName = reader.getName(); + + if(RESTBinding.TYPE.equals(elementName)) { + + // binding attributes + String name = getString(reader, NAME); + if(name != null) { + restBinding.setName(name); + } + + String uri = getURIString(reader, URI); + if (uri != null) { + restBinding.setURI(uri); + } + + String readTimeout = getString(reader, READ_TIMEOUT); + if (readTimeout != null) { + restBinding.setReadTimeout(Integer.valueOf(readTimeout)); + } + + Boolean isCORS = getBoolean(reader, CORS); + if(isCORS != null) { + restBinding.setCORS(isCORS); + } + + break; + + } else if (HEADERS_QNAME.equals(elementName)) { + + // ignore wrapper element + break; + + } else if (HEADER_QNAME.equals(elementName)) { + + // header name/value pair + String name = getString(reader, NAME); + String value = getURIString(reader, VALUE); + + if(name != null) { + restBinding.getHttpHeaders().add(new HTTPHeader(name, value)); + } + break; + + } else if (RESPONSE_QNAME.equals(elementName)) { + + // skip response + reader.next(); + // and position to the next start_element event + while (reader.hasNext()) { + int sub_event = reader.getEventType(); + switch (sub_event) { + case START_ELEMENT: + elementName = reader.getName(); + break; + default: reader.next(); + } + break; + } + + // dispatch to read wire format for the response + //Object extension = extensionProcessor.read(reader, context); + Object extension = readWireFormatAndOperationSelectorExtensions(reader); + if (extension != null) { + if (extension instanceof WireFormat) { + restBinding.setResponseWireFormat((WireFormat)extension); + } + } + break; + } else if(WIRE_FORMAT_JSON.equals(elementName) || WIRE_FORMAT_XML.equals(elementName) || + OPERATION_SELCTOR_JAXRS.equals(elementName) || OPERATION_SELCTOR_RPC.equals(elementName)) { + + // Read wireFormat and/or operationSelector extension elements + Object extension = readWireFormatAndOperationSelectorExtensions(reader); + if (extension != null) { + if (extension instanceof WireFormat) { + restBinding.setRequestWireFormat((WireFormat)extension); + restBinding.setResponseWireFormat((WireFormat)extension); + } else if(extension instanceof OperationSelector) { + restBinding.setOperationSelector((OperationSelector)extension); + restBinding.setCORS(true); + } + } + break; + + + } else { + // Read an extension element + Object extension = extensionProcessor.read(reader, context); + if (extension != null) { + if (extension instanceof CORSConfiguration) { + restBinding.setCORSConfiguration((CORSConfiguration)extension); + } + } + break; + } + + case END_ELEMENT: + elementName = reader.getName(); + + if(RESTBinding.TYPE.equals(elementName)) { + return restBinding; + } + break; + } + + + + // Read the next element + if (reader.hasNext()) { + reader.next(); + } + } + + return restBinding; + } + + + public void write(RESTBinding restBinding, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException, XMLStreamException { + + writeStart(writer, RESTBinding.TYPE.getNamespaceURI(), RESTBinding.TYPE.getLocalPart()); + + // Write binding name + if (restBinding.getName() != null) { + writer.writeAttribute(NAME, restBinding.getName()); + } + + // Write binding URI + if (restBinding.getURI() != null) { + writer.writeAttribute(URI, restBinding.getURI()); + } + + // Write operation selectors + if ( restBinding.getOperationSelector() != null ) { + writeWireFormatAndOperationSelectorExtensions(writer, restBinding.getOperationSelector()); + } + + // Write wire formats + if ( restBinding.getRequestWireFormat() != null ) { + writeWireFormatAndOperationSelectorExtensions(writer, restBinding.getRequestWireFormat()); + } + + if ( restBinding.getResponseWireFormat() != null && restBinding.getRequestWireFormat() != restBinding.getResponseWireFormat()) { + writeStart(writer, RESPONSE_QNAME.getNamespaceURI(), RESPONSE_QNAME.getLocalPart()); + if(restBinding.getResponseWireFormat() != null) { + writeWireFormatAndOperationSelectorExtensions(writer, restBinding.getResponseWireFormat()); + } + writeEnd(writer); + } + + + writeEnd(writer); + } + + + public void resolve(RESTBinding model, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { + // Should not need to do anything here for now... + + } + + private Object readWireFormatAndOperationSelectorExtensions(XMLStreamReader reader) throws XMLStreamException { + QName elementName = reader.getName(); + + if(WIRE_FORMAT_JSON.equals(elementName)) { + return this.jsonWireFormatFactory.createRESTWireFormatJSON(); + } else if(WIRE_FORMAT_XML.equals(elementName)) { + return this.xmlWireFormatFactory.createRESTWireFormatXML(); + } else if(OPERATION_SELCTOR_JAXRS.equals(elementName)) { + return this.jaxrsOperationSelectorFactory.createJAXRSOperationSelector(); + } else if(OPERATION_SELCTOR_RPC.equals(elementName)) { + return this.rpcOperationSelectorFactory.createRPCOperationSelector(); + } + + return null; + } + + private void writeWireFormatAndOperationSelectorExtensions(XMLStreamWriter writer, Object object) throws XMLStreamException { + + if(object instanceof JSONWireFormat) { + writeStart(writer, WIRE_FORMAT_JSON.getNamespaceURI(), WIRE_FORMAT_JSON.getLocalPart()); + writeEnd(writer); + } else if (object instanceof XMLWireFormat) { + writeStart(writer, WIRE_FORMAT_XML.getNamespaceURI(), WIRE_FORMAT_XML.getLocalPart()); + writeEnd(writer); + } else if (object instanceof JAXRSOperationSelector) { + writeStart(writer, OPERATION_SELCTOR_JAXRS.getNamespaceURI(), OPERATION_SELCTOR_JAXRS.getLocalPart()); + writeEnd(writer); + } else if (object instanceof RPCOperationSelector) { + writeStart(writer, OPERATION_SELCTOR_RPC.getNamespaceURI(), OPERATION_SELCTOR_RPC.getLocalPart()); + writeEnd(writer); + } + } +} |