1 files changed, 79 insertions, 0 deletions
diff --git a/sleepingcelldetector/src/main/java/org/onap/rapp/sleepingcelldetector/service/PolicyInstanceManager.java b/sleepingcelldetector/src/main/java/org/onap/rapp/sleepingcelldetector/service/PolicyInstanceManager.java
new file mode 100644
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--- /dev/null
+++ b/sleepingcelldetector/src/main/java/org/onap/rapp/sleepingcelldetector/service/PolicyInstanceManager.java
@@ -0,0 +1,79 @@
+/*
+ * 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 com.google.common.collect.ArrayListMultimap;
+import com.google.common.collect.Multimap;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
+import org.onap.rapp.sleepingcelldetector.entity.RicConfiguration;
+import org.onap.rapp.sleepingcelldetector.entity.policy.PolicyInstance;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PolicyInstanceManager {
+
+    private static final Logger logger = LoggerFactory.getLogger(PolicyInstanceManager.class);
+    private Multimap<String, PolicyInstance> cellPolicyInstancesMap = ArrayListMultimap.create();
+
+    private final PolicyAgentClient policyAgentClient;
+    private final PolicyInstanceBuilder payloadBuilder;
+
+    public PolicyInstanceManager(PolicyAgentClient policyAgentClient, PolicyInstanceBuilder payloadBuilder) {
+        this.policyAgentClient = policyAgentClient;
+        this.payloadBuilder = payloadBuilder;
+    }
+
+    public boolean cellContainsPolicy(String cell) {
+        return cellPolicyInstancesMap.containsKey(cell);
+    }
+
+    public boolean cellContainsPolicyForUe(String cell, String ue) {
+        if (cellContainsPolicy(cell)) {
+            List<PolicyInstance> policyInstances = new ArrayList<>(cellPolicyInstancesMap.get(cell));
+            return policyInstances.stream().anyMatch(pi -> pi.getJson().getScope().getUeId().equals(ue));
+        }
+        return false;
+    }
+
+    public void createPolicyInstance(String cell, String ue, RicConfiguration ric) {
+        try {
+            PolicyInstance policy = payloadBuilder.buildPolicyInstance(cell, ue, ric);
+            cellPolicyInstancesMap.put(cell, policy);
+            policyAgentClient.sendPolicyEvent(policy, ric);
+            logger.info("Policy Instance for ue {}, cell {} created with id {}", ue, cell, policy.getId());
+        } catch (Exception e) {
+            logger.error("Error during request to Policy Management Service: {}", e.getMessage());
+            removePolicyInstancesForCell(cell);
+        }
+    }
+
+    public void addPolicyInstance(PolicyInstance policyInstance) {
+        List<String> cells = policyInstance.getJson().getResources()
+                .stream().flatMap(resources -> resources.getCellIdList().stream()).collect(Collectors.toList());
+        cells.forEach(cell -> cellPolicyInstancesMap.put(cell, policyInstance));
+    }
+
+    public void removePolicyInstancesForCell(String cell) {
+        Collection<PolicyInstance> policyInstancesByCell = cellPolicyInstancesMap.get(cell);
+        policyInstancesByCell.forEach(pi -> policyAgentClient.deletePolicyInstance(pi.getId()));
+        cellPolicyInstancesMap.removeAll(cell);
+        logger.info("Policy Instances for cell {} removed", cell);
+    }
+
+}