diff options
Diffstat (limited to 'services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EnEventListenerImpl.java')
-rw-r--r-- | services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EnEventListenerImpl.java | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EnEventListenerImpl.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EnEventListenerImpl.java new file mode 100644 index 000000000..abd6db2d9 --- /dev/null +++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EnEventListenerImpl.java @@ -0,0 +1,71 @@ +/*- + * ============LICENSE_START======================================================= + * Copyright (C) 2016-2018 Ericsson. 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.service.engine.runtime.impl; + +import org.onap.policy.apex.core.engine.engine.EnEventListener; +import org.onap.policy.apex.core.engine.event.EnEvent; +import org.onap.policy.apex.model.basicmodel.concepts.ApexException; +import org.onap.policy.apex.service.engine.event.ApexEvent; +import org.onap.policy.apex.service.engine.event.impl.enevent.ApexEvent2EnEventConverter; +import org.onap.policy.apex.service.engine.runtime.ApexEventListener; + +/** + * The Class EnEventListenerImpl is used by the Apex engine implementation to listen for events + * coming from the core APEX engine. This listener converts the {@link EnEvent} instances into + * {@link ApexEvent} instances using an {@link ApexEvent2EnEventConverter} instance and forwards the + * events to an {@link ApexEventListener} instance for outputting to listening applications. The + * {@link ApexEventListener} is implemented in the external application communicating with Apex. + * + * @author Liam Fallon (liam.fallon@ericsson.com) + */ +public final class EnEventListenerImpl implements EnEventListener { + // Listener for ApexEvents + private ApexEventListener apexEventListener = null; + + // Converter for Engine events to Apex Events + private ApexEvent2EnEventConverter apexEnEventConverter = null; + + /** + * Instantiates a new listener implementation. + * + * @param apexEventListener the apex event listener + * @param apexEnEventConverter the ApexEvent to enEvent converter + */ + public EnEventListenerImpl(final ApexEventListener apexEventListener, + final ApexEvent2EnEventConverter apexEnEventConverter) { + this.apexEventListener = apexEventListener; + this.apexEnEventConverter = apexEnEventConverter; + } + + /* + * (non-Javadoc) + * + * @see + * org.onap.policy.apex.core.engine.engine.EnEventListener#onEnEvent(org.onap.policy.apex.core. + * engine.event.EnEvent) + */ + @Override + public void onEnEvent(final EnEvent enEvent) throws ApexException { + for (final ApexEvent apexEvent : apexEnEventConverter.toApexEvent(enEvent.getName(), enEvent)) { + apexEventListener.onApexEvent(apexEvent); + } + } +} |