Initial code check-in for A1 Policy Enforcement Simulator

Issue-ID: INT-1887
Signed-off-by: Krystian Kedron <k.kedron@partner.samsung.com>
Change-Id: I643dadac5386bf21eaa108435c83b69706b0bc1c

1 files changed, 47 insertions, 0 deletions

diff --git a/src/main/java/org/onap/a1pesimulator/service/a1/PolicyInstancesHolder.java b/src/main/java/org/onap/a1pesimulator/service/a1/PolicyInstancesHolder.java
new file mode 100644
index 0000000..a5e5a07
--- /dev/null
+++ b/src/main/java/org/onap/a1pesimulator/service/a1/PolicyInstancesHolder.java
@@ -0,0 +1,47 @@
+/*
+ * 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.a1pesimulator.service.a1;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import org.onap.a1pesimulator.util.JsonUtils;
+import org.springframework.stereotype.Service;
+
+@Service
+public class PolicyInstancesHolder {
+
+    Map<String, String> cellPolicyMap = new HashMap<>();
+
+    public void addPolicy(String policyId, String body) {
+        cellPolicyMap.put(policyId, body);
+    }
+
+    public void removePolicy(String policyId) {
+        cellPolicyMap.remove(policyId);
+    }
+
+    public boolean containsPoliciesForCell(String cell) {
+        return cellPolicyMap.values().stream().map(this::getCellListFromPolicyInstance).flatMap(List::stream)
+                       .anyMatch(c -> c.equals(cell));
+    }
+
+    private List<String> getCellListFromPolicyInstance(String policyInstance) {
+        RanUeHandoverOnPolicyAction.UeHandoverPolicy policy =
+                JsonUtils.INSTANCE.deserialize(policyInstance, RanUeHandoverOnPolicyAction.UeHandoverPolicy.class);
+        return policy.getResources().stream().flatMap(resources -> resources.getCellIdList().stream())
+                       .collect(Collectors.toList());
+    }
+}