2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.service.engine.event.impl.enevent;
23 import java.util.ArrayList;
24 import java.util.List;
25 import org.onap.policy.apex.core.engine.engine.ApexEngine;
26 import org.onap.policy.apex.core.engine.event.EnEvent;
27 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
28 import org.onap.policy.apex.model.basicmodel.service.ModelService;
29 import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
30 import org.onap.policy.apex.model.eventmodel.concepts.AxEvents;
31 import org.onap.policy.apex.service.engine.event.ApexEvent;
32 import org.onap.policy.apex.service.engine.event.ApexEventConverter;
33 import org.onap.policy.apex.service.engine.event.ApexEventException;
34 import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
35 import org.slf4j.ext.XLogger;
36 import org.slf4j.ext.XLoggerFactory;
39 * The Class ApexEvent2EnEventConverter converts externally facing {@link ApexEvent} instances to
40 * and from instances of {@link EnEvent} that are used internally in the Apex engine core.
42 * @author Liam Fallon (liam.fallon@ericsson.com)
44 public final class ApexEvent2EnEventConverter implements ApexEventConverter {
45 private static final XLogger LOGGER = XLoggerFactory.getXLogger(ApexEvent2EnEventConverter.class);
47 // The Apex engine with its event definitions
48 private final ApexEngine apexEngine;
51 * Set up the event converter.
53 * @param apexEngine The engine to use to create events to be converted
55 public ApexEvent2EnEventConverter(final ApexEngine apexEngine) {
56 this.apexEngine = apexEngine;
63 public List<ApexEvent> toApexEvent(final String eventName, final Object event) throws ApexException {
64 // Check the Engine event
66 LOGGER.warn("event processing failed, engine event is null");
67 throw new ApexEventException("event processing failed, engine event is null");
70 // Cast the event to an Engine event event, if our conversion is correctly configured, this
71 // cast should always work
72 EnEvent enEvent = null;
74 enEvent = (EnEvent) event;
75 } catch (final Exception e) {
76 final String errorMessage = "error transferring event \"" + event + "\" to the Apex engine";
77 LOGGER.debug(errorMessage, e);
78 throw new ApexEventRuntimeException(errorMessage, e);
81 // Create the Apex event
82 final AxEvent axEvent = enEvent.getAxEvent();
83 final ApexEvent apexEvent = new ApexEvent(axEvent.getKey().getName(), axEvent.getKey().getVersion(),
84 axEvent.getNameSpace(), axEvent.getSource(), axEvent.getTarget());
86 apexEvent.setExecutionId(enEvent.getExecutionId());
87 apexEvent.setExecutionProperties(enEvent.getExecutionProperties());
89 // Copy he exception message to the Apex event if it is set
90 if (enEvent.getExceptionMessage() != null) {
91 apexEvent.setExceptionMessage(enEvent.getExceptionMessage());
94 // Set the data on the apex event
95 apexEvent.putAll(enEvent);
97 // Return the event in a single element
98 final ArrayList<ApexEvent> eventList = new ArrayList<>();
99 eventList.add(apexEvent);
107 public EnEvent fromApexEvent(final ApexEvent apexEvent) throws ApexException {
108 // Check the Apex model
109 if (apexEngine == null) {
110 LOGGER.warn("event processing failed, apex engine is null");
111 throw new ApexEventException("event processing failed, apex engine is null");
114 // Get the event definition
115 final AxEvent eventDefinition = ModelService.getModel(AxEvents.class).get(apexEvent.getName());
116 if (eventDefinition == null) {
117 LOGGER.warn("event processing failed, event \"" + apexEvent.getName() + "\" not found in apex model");
118 throw new ApexEventException(
119 "event processing failed, event \"" + apexEvent.getName() + "\" not found in apex model");
122 // Create the internal engine event
123 final EnEvent enEvent = apexEngine.createEvent(eventDefinition.getKey());
125 // Set the data on the engine event
126 enEvent.putAll(apexEvent);
128 enEvent.setExecutionId(apexEvent.getExecutionId());
129 enEvent.setExecutionProperties(apexEvent.getExecutionProperties());