remove code duplication in plugins

Remove consumer code duplication in plugins-event-carrier

Issue-ID: POLICY-1884
Signed-off-by: shaoqiu <tim.huang@est.tech>
Change-Id: I2d222436a97224e54a03c2501f4dc14d3f5f6ac0

1 files changed, 76 insertions, 0 deletions

diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/event/ApexPluginsEventConsumer.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/event/ApexPluginsEventConsumer.java
new file mode 100644
index 000000000..95a263e10
--- /dev/null
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/event/ApexPluginsEventConsumer.java
@@ -0,0 +1,76 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.event;
+
+import java.util.EnumMap;
+import java.util.Map;
+import org.onap.policy.apex.core.infrastructure.threading.ApplicationThreadFactory;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
+
+public abstract class ApexPluginsEventConsumer implements ApexEventConsumer, Runnable {
+    // The name for this consumer
+    protected String name = null;
+
+    // The peer references for this event handler
+    protected Map<EventHandlerPeeredMode, PeeredReference> peerReferenceMap =
+            new EnumMap<>(EventHandlerPeeredMode.class);
+
+    // The consumer thread and stopping flag
+    protected Thread consumerThread;
+    protected boolean stopOrderedFlag = false;
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
+    public void start() {
+        // Configure and start the event reception thread
+        final String threadName = this.getClass().getName() + ":" + this.name;
+        consumerThread = new ApplicationThreadFactory(threadName).newThread(this);
+        consumerThread.setDaemon(true);
+        consumerThread.start();
+    }
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
+    public PeeredReference getPeeredReference(final EventHandlerPeeredMode peeredMode) {
+        return peerReferenceMap.get(peeredMode);
+    }
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
+    public void setPeeredReference(final EventHandlerPeeredMode peeredMode, final PeeredReference peeredReference) {
+        peerReferenceMap.put(peeredMode, peeredReference);
+    }
+
+}