1 files changed, 109 insertions, 0 deletions
diff --git a/sleepingcelldetector/src/main/java/org/onap/rapp/sleepingcelldetector/service/CellPerformanceHandler.java b/sleepingcelldetector/src/main/java/org/onap/rapp/sleepingcelldetector/service/CellPerformanceHandler.java
new file mode 100644
index 0000000..72bc8d6
--- /dev/null
+++ b/sleepingcelldetector/src/main/java/org/onap/rapp/sleepingcelldetector/service/CellPerformanceHandler.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2021 Samsung Electronics
+ * 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
+ */
+
+package org.onap.rapp.sleepingcelldetector.service;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.onap.rapp.sleepingcelldetector.configuration.SleepingCellDetectorConfiguration;
+import org.onap.rapp.sleepingcelldetector.entity.RicConfiguration;
+import org.onap.rapp.sleepingcelldetector.service.scd.SleepingCellDetectorService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+@Service
+public class CellPerformanceHandler {
+
+    private static final Logger logger = LoggerFactory.getLogger(CellPerformanceHandler.class);
+
+    private final SleepingCellDetectorService sleepingCellDetectorService;
+    private final RicConfigurationHolder ricConfigHolder;
+    private final PolicyInstanceManager policyInstancesManager;
+    private final SleepingCellDetectorConfiguration config;
+    private final DataCollectorClient dataCollectorClient;
+
+    public CellPerformanceHandler(SleepingCellDetectorService sleepingCellDetectorService, RicConfigurationHolder ricConfigHolder,
+                                  PolicyInstanceManager policyInstanceManager, SleepingCellDetectorConfiguration config,
+                                  DataCollectorClient dataCollectorClient) {
+        this.sleepingCellDetectorService = sleepingCellDetectorService;
+        this.ricConfigHolder = ricConfigHolder;
+        this.policyInstancesManager = policyInstanceManager;
+        this.config = config;
+        this.dataCollectorClient = dataCollectorClient;
+    }
+
+    public void handleCellPerformance(String cell, List<Map<String, Integer>> pmData) {
+        logger.info("Handle cell: {} started", cell);
+        try {
+            if (pmData.isEmpty()) {
+                logger.warn("pm data is empty for cell: {}", cell);
+                return;
+            }
+
+            Boolean isFailing = sleepingCellDetectorService.isFailing(pmData);
+            handleCell(cell, isFailing);
+        } catch (Exception e) {
+            logger.error("Error during sleeping cell detecting: {}", e.getMessage());
+        }
+    }
+
+    private void handleCell(String cell, boolean isFailing) {
+        if (isFailing) {
+            handleFailingCell(cell);
+        } else {
+            handleActiveCell(cell);
+        }
+    }
+
+    private void handleFailingCell(String cell) {
+        logger.info("Cell {} is in failed status, policy instance will be created", cell);
+
+        Optional<RicConfiguration> ricConfig = ricConfigHolder.getRicConfig();
+        if (ricConfig.isEmpty()) {
+            logger.warn("Can't find ric configuration for cell: {}", cell);
+            return;
+        }
+
+        Set<String> userEquipmentsIds = getHighPriorityUEs();
+        if (userEquipmentsIds.isEmpty()) {
+            logger.warn("No high priority user equipment for cell: {}", cell);
+            return;
+        }
+
+        createPolicyInstance(ricConfig.get(), userEquipmentsIds, cell);
+    }
+
+    private Set<String> getHighPriorityUEs() {
+        return dataCollectorClient.getUserEquipment().getUes().stream()
+                .filter(ue -> ue.startsWith(config.getUeFilteringPrefix()))
+                .collect(Collectors.toSet());
+    }
+
+    private void createPolicyInstance(RicConfiguration ricConfig, Set<String> userEquipmentsIds, String cell) {
+        userEquipmentsIds.stream()
+                .filter(ue -> !policyInstancesManager.cellContainsPolicyForUe(cell, ue))
+                .forEach(ue -> policyInstancesManager.createPolicyInstance(cell, ue, ricConfig));
+    }
+
+    private void handleActiveCell(String cell) {
+        if (policyInstancesManager.cellContainsPolicy(cell)) {
+            policyInstancesManager.removePolicyInstancesForCell(cell);
+        }
+        logger.info("Cell {} is not in failed status", cell);
+    }
+
+}