Fixed concurrency problems

[nonrtric.git] / policy-agent / src / main / java / org / oransc / policyagent / repository / Policies.java

diff --git a/policy-agent/src/main/java/org/oransc/policyagent/repository/Policies.java b/policy-agent/src/main/java/org/oransc/policyagent/repository/Policies.java
index a5519ca..54f876a 100644 (file)
--- a/policy-agent/src/main/java/org/oransc/policyagent/repository/Policies.java
+++ b/policy-agent/src/main/java/org/oransc/policyagent/repository/Policies.java
@@ -20,28 +20,104 @@
 
 package org.oransc.policyagent.repository;
 
+import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Set;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
+import org.oransc.policyagent.exceptions.ServiceException;
 
 public class Policies {
-    private static final Logger logger = LoggerFactory.getLogger(Policies.class);
+    private Map<String, Policy> policiesId = new HashMap<>();
+    private Map<String, Map<String, Policy>> policiesRic = new HashMap<>();
+    private Map<String, Map<String, Policy>> policiesService = new HashMap<>();
+    private Map<String, Map<String, Policy>> policiesType = new HashMap<>();
 
-    private Map<String, Policy> policies = new HashMap<String, Policy>();
+    public synchronized void put(Policy policy) {
+        policiesId.put(policy.id(), policy);
+        multiMapPut(policiesRic, policy.ric().name(), policy);
+        multiMapPut(policiesService, policy.ownerServiceName(), policy);
+        multiMapPut(policiesType, policy.type().name(), policy);
+    }
+
+    private void multiMapPut(Map<String, Map<String, Policy>> multiMap, String key, Policy value) {
+        multiMap.computeIfAbsent(key, k -> new HashMap<>()).put(value.id(), value);
+    }
 
-    @Autowired
-    public Policies() {
+    private void multiMapRemove(Map<String, Map<String, Policy>> multiMap, String key, Policy value) {
+        Map<String, Policy> map = multiMap.get(key);
+        if (map != null) {
+            map.remove(value.id());
+            if (map.isEmpty()) {
+                multiMap.remove(key);
+            }
+        }
     }
 
-    public synchronized void put(String id, Policy policy) {
-        policies.put(id, policy);
+    private Collection<Policy> multiMapGet(Map<String, Map<String, Policy>> multiMap, String key) {
+        Map<String, Policy> map = multiMap.get(key);
+        if (map == null) {
+            return Collections.emptyList();
+        }
+        return Collections.unmodifiableCollection(map.values());
+    }
+
+    public synchronized boolean containsPolicy(String id) {
+        return policiesId.containsKey(id);
     }
 
     public synchronized Policy get(String id) {
-        return policies.get(id);
+        return policiesId.get(id);
+    }
+
+    public synchronized Policy getPolicy(String id) throws ServiceException {
+        Policy p = policiesId.get(id);
+        if (p == null) {
+            throw new ServiceException("Could not find policy: " + id);
+        }
+        return p;
+    }
+
+    public synchronized Collection<Policy> getAll() {
+        return Collections.unmodifiableCollection(policiesId.values());
+    }
+
+    public synchronized Collection<Policy> getForService(String service) {
+        return multiMapGet(policiesService, service);
     }
 
+    public synchronized Collection<Policy> getForRic(String ric) {
+        return multiMapGet(policiesRic, ric);
+    }
+
+    public synchronized Collection<Policy> getForType(String type) {
+        return multiMapGet(policiesType, type);
+    }
+
+    public synchronized Policy removeId(String id) {
+        Policy p = policiesId.get(id);
+        if (p != null) {
+            remove(p);
+        }
+        return p;
+    }
+
+    public synchronized void remove(Policy policy) {
+        policiesId.remove(policy.id());
+        multiMapRemove(policiesRic, policy.ric().name(), policy);
+        multiMapRemove(policiesService, policy.ownerServiceName(), policy);
+        multiMapRemove(policiesType, policy.type().name(), policy);
+    }
+
+    public synchronized int size() {
+        return policiesId.size();
+    }
+
+    public synchronized void clear() {
+        while (policiesId.size() > 0) {
+            Set<String> keys = policiesId.keySet();
+            removeId(keys.iterator().next());
+        }
+    }
 }