diff options
Diffstat (limited to 'plugins/plugins-event/plugins-event-protocol/plugins-event-protocol-xml/src/main/java/org/onap/policy/apex/plugins/event/protocol/xml/Apex2XmlEventConverter.java')
| -rw-r--r-- | plugins/plugins-event/plugins-event-protocol/plugins-event-protocol-xml/src/main/java/org/onap/policy/apex/plugins/event/protocol/xml/Apex2XmlEventConverter.java | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/plugins/plugins-event/plugins-event-protocol/plugins-event-protocol-xml/src/main/java/org/onap/policy/apex/plugins/event/protocol/xml/Apex2XmlEventConverter.java b/plugins/plugins-event/plugins-event-protocol/plugins-event-protocol-xml/src/main/java/org/onap/policy/apex/plugins/event/protocol/xml/Apex2XmlEventConverter.java deleted file mode 100644 index 907d426e7..000000000 --- a/plugins/plugins-event/plugins-event-protocol/plugins-event-protocol-xml/src/main/java/org/onap/policy/apex/plugins/event/protocol/xml/Apex2XmlEventConverter.java +++ /dev/null @@ -1,188 +0,0 @@ -/*- - * ============LICENSE_START======================================================= - * Copyright (C) 2016-2018 Ericsson. All rights reserved. - * Modifications Copyright (C) 2021-2022 Bell Canada. All rights reserved. - * Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved. - * ================================================================================ - * Licensed 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. - * - * SPDX-License-Identifier: Apache-2.0 - * ============LICENSE_END========================================================= - */ - -package org.onap.policy.apex.plugins.event.protocol.xml; - -import java.io.ByteArrayInputStream; -import java.io.StringWriter; -import java.util.ArrayList; -import java.util.List; -import java.util.Map.Entry; -import javax.xml.XMLConstants; -import javax.xml.bind.JAXBContext; -import javax.xml.bind.JAXBElement; -import javax.xml.bind.JAXBException; -import javax.xml.bind.Marshaller; -import javax.xml.bind.Unmarshaller; -import javax.xml.transform.stream.StreamSource; -import javax.xml.validation.SchemaFactory; -import org.onap.policy.apex.plugins.event.protocol.xml.jaxb.ObjectFactory; -import org.onap.policy.apex.plugins.event.protocol.xml.jaxb.XMLApexEvent; -import org.onap.policy.apex.plugins.event.protocol.xml.jaxb.XMLApexEventData; -import org.onap.policy.apex.service.engine.event.ApexEvent; -import org.onap.policy.apex.service.engine.event.ApexEventException; -import org.onap.policy.apex.service.engine.event.ApexEventProtocolConverter; -import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException; -import org.onap.policy.apex.service.parameters.eventprotocol.EventProtocolParameters; -import org.onap.policy.common.utils.resources.ResourceUtils; -import org.xml.sax.SAXException; - -/** - * The Class Apex2XMLEventConverter converts {@link ApexEvent} instances into string instances of {@link XMLApexEvent} - * that are XML representations of Apex events defined in JAXB. - * - * @author Liam Fallon (liam.fallon@ericsson.com) - */ -public final class Apex2XmlEventConverter implements ApexEventProtocolConverter { - - private static final String MODEL_SCHEMA_NAME = "xml/apex-event.xsd"; - - // XML Unmarshaller and marshaller and object factory for events - private Unmarshaller unmarshaller; - private Marshaller marshaller; - private ObjectFactory objectFactory = new ObjectFactory(); - - /** - * Constructor to create the Apex to XML converter. - * - * @throws ApexEventException the apex event exception - */ - public Apex2XmlEventConverter() throws ApexEventException { - try { - final var schemaUrl = ResourceUtils.getUrlResource(MODEL_SCHEMA_NAME); - final var apexEventSchema = - SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI).newSchema(schemaUrl); - - final var jaxbContext = JAXBContext.newInstance(XMLApexEvent.class); - - // Set up the unmarshaller to carry out validation - unmarshaller = jaxbContext.createUnmarshaller(); - unmarshaller.setEventHandler(new javax.xml.bind.helpers.DefaultValidationEventHandler()); - unmarshaller.setSchema(apexEventSchema); - - // Set up the marshaller - marshaller = jaxbContext.createMarshaller(); - marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); - marshaller.setSchema(apexEventSchema); - } catch (JAXBException | SAXException e) { - throw new ApexEventException("Unable to set up marshalling and unmarshalling for XML events", e); - } - } - - /** - * {@inheritDoc}. - */ - @Override - public void init(final EventProtocolParameters parameters) { - // No initialization necessary on this class - } - - /** - * {@inheritDoc}. - */ - @Override - public List<ApexEvent> toApexEvent(final String eventName, final Object eventObject) throws ApexEventException { - // Check the XML event - if (eventObject == null) { - throw new ApexEventException("event processing failed, XML event is null"); - } - - // Cast the event to a string, if our conversion is correctly configured, this cast should always work - String xmlEventString = null; - try { - xmlEventString = (String) eventObject; - } catch (final Exception e) { - final String errorMessage = "error converting event \"" + eventObject + "\" to a string"; - throw new ApexEventRuntimeException(errorMessage, e); - } - - // The XML event - XMLApexEvent xmlApexEvent = null; - - // Use JAXB to read and verify the event from the XML string - try { - final var source = new StreamSource(new ByteArrayInputStream(xmlEventString.getBytes())); - final JAXBElement<XMLApexEvent> rootElement = unmarshaller.unmarshal(source, XMLApexEvent.class); - xmlApexEvent = rootElement.getValue(); - } catch (final JAXBException e) { - throw new ApexEventException("Unable to unmarshal Apex XML event\n" + xmlEventString, e); - } - - // Create the Apex event - // FIXME: Introduce new AxEvent field for APEX to Xml conversion - final var apexEvent = new ApexEvent(xmlApexEvent.getName(), xmlApexEvent.getVersion(), - xmlApexEvent.getNameSpace(), xmlApexEvent.getSource(), xmlApexEvent.getTarget(), ""); - - // Set the data on the apex event - for (final XMLApexEventData xmlData : xmlApexEvent.getData()) { - apexEvent.put(xmlData.getKey(), xmlData.getValue()); - } - - // Return the event in a single element - final ArrayList<ApexEvent> eventList = new ArrayList<>(); - eventList.add(apexEvent); - return eventList; - } - - /** - * {@inheritDoc}. - */ - @Override - public String fromApexEvent(final ApexEvent apexEvent) throws ApexEventException { - // Check the Apex event - if (apexEvent == null) { - throw new ApexEventException("event processing failed, Apex event is null"); - } - - // Get the Apex event data - final List<XMLApexEventData> xmlDataList = new ArrayList<>(); - - try { - for (final Entry<String, Object> apexDataEntry : apexEvent.entrySet()) { - // Add an XML event data item - if (apexDataEntry.getValue() != null) { - xmlDataList.add(new XMLApexEventData(apexDataEntry.getKey(), apexDataEntry.getValue().toString())); - } else { - xmlDataList.add(new XMLApexEventData(apexDataEntry.getKey(), "")); - } - } - } catch (final Exception e) { - throw new ApexEventException("Unable to transfer Apex event data to XML\n" + apexEvent, e); - } - - // Create the XML event - final var xmlApexEvent = new XMLApexEvent(apexEvent.getName(), apexEvent.getVersion(), - apexEvent.getNameSpace(), apexEvent.getSource(), apexEvent.getTarget(), xmlDataList); - - // Write the event into a DOM document - try { - // Marshal the event into XML - final var writer = new StringWriter(); - marshaller.marshal(objectFactory.createXmlApexEvent(xmlApexEvent), writer); - - // Return the event as XML in a string - return writer.toString(); - } catch (final JAXBException e) { - throw new ApexEventException("Unable to unmarshal Apex event to XML\n" + apexEvent, e); - } - } -}
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