1 files changed, 110 insertions, 0 deletions
diff --git a/components/kpi-computation-ms/src/main/java/org/onap/dcaegen2/kpi/dmaap/KpiComputationCallBack.java b/components/kpi-computation-ms/src/main/java/org/onap/dcaegen2/kpi/dmaap/KpiComputationCallBack.java
new file mode 100644
index 00000000..8ab625c7
--- /dev/null
+++ b/components/kpi-computation-ms/src/main/java/org/onap/dcaegen2/kpi/dmaap/KpiComputationCallBack.java
@@ -0,0 +1,110 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020-2021 China Mobile.
+ * ================================================================================
+ * 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.dcaegen2.kpi.dmaap;
+
+import java.util.List;
+
+import org.onap.dcaegen2.kpi.computation.KpiComputation;
+import org.onap.dcaegen2.kpi.models.Configuration;
+import org.onap.dcaegen2.kpi.models.VesEvent;
+import org.onap.dcaegen2.kpi.utils.DmaapUtils;
+import org.onap.dcaegen2.kpi.utils.VesJsonConversion;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * SumKpiComputation.
+ *
+ * @author Kai Lu
+ */
+public class KpiComputationCallBack implements NotificationCallback {
+
+    private static Logger logger = LoggerFactory.getLogger(KpiComputationCallBack.class);
+
+    @Override
+    public void activateCallBack(String msg) {
+        Configuration config = Configuration.getInstance();
+        if (config == null) {
+            logger.info("Config is not exist");
+            return;
+        }
+
+        kpiComputation(msg, config);
+    }
+
+    /**
+     * do KPI computation and publish result to dmaap.
+     *
+     * @param msg    msg
+     * @param config config
+     *
+     */
+    public void kpiComputation(String msg, Configuration config) {
+        logger.info("Original PM data: {}", msg);
+
+        logger.info("Kpi Config: {}", config.getKpiConfig());
+
+        // do computation
+        KpiComputation kpiComputation = new KpiComputation();
+        List<VesEvent> vesEvents = kpiComputation.checkAndDoComputation(msg, config);
+
+        if (vesEvents == null || vesEvents.isEmpty()) {
+            logger.info("No Kpi Event exist");
+            return;
+        }
+        logger.info("KPI results: {}", vesEvents);
+
+        // publish kpi computation result
+        if (publish(vesEvents, config)) {
+            logger.info("publish success");
+            return;
+        }
+
+        logger.error("publish events failed: {}", vesEvents);
+
+    }
+
+    /**
+     * ves publish.
+     *
+     * @param vesEvents vesEvents
+     *
+     */
+    private boolean publish(List<VesEvent> vesEvents, Configuration configuration) {
+        logger.info("Publishing KPI VES events to messagerouter.");
+        KpiDmaapClient kpiDmaapClient = new KpiDmaapClient(new DmaapUtils(), configuration);
+        try {
+            vesEvents.forEach(e -> {
+                // publish kpi computation result
+                String event = VesJsonConversion.convertVesEventToString(e);
+
+                logger.info("Publishing event: {}.", event);
+
+                kpiDmaapClient.sendNotificationToDmaap(event);
+            });
+            logger.info("KPI computation done successfully");
+            return true;
+        } catch (Exception e) {
+            logger.error("KPI computation done failed.", e);
+        }
+        return false;
+    }
+}