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);
+        }
+    }
+}