Populate the PdpStatistics data in heartbeat

Apex to populate the PdpStatistics data in every heartbeat sent to PAP

Issue-ID: POLICY-2302
Change-Id: I2d3a6c1e8605d53bf754a135980527bd50762abd
Signed-off-by: shaoqiu <tim.huang@est.tech>

8 files changed, 297 insertions, 25 deletions

diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java
index 6c86c1eff..169f8154a 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexActivator.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ package org.onap.policy.apex.service.engine.main;
 
 import java.io.IOException;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.stream.Stream;
@@ -31,6 +32,7 @@ import lombok.Setter;
 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
 import org.onap.policy.apex.model.basicmodel.handling.ApexModelException;
 import org.onap.policy.apex.model.basicmodel.service.ModelService;
+import org.onap.policy.apex.model.enginemodel.concepts.AxEngineModel;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.model.policymodel.handling.PolicyModelMerger;
 import org.onap.policy.apex.model.utilities.TextFileUtils;
@@ -266,6 +268,17 @@ public class ApexActivator {
     }
 
     /**
+     * Get the Apex engine worker stats.
+     */
+    public List<AxEngineModel> getEngineStats() {
+        List<AxEngineModel> engineStats = null;
+        if (apexEngineService != null) {
+            engineStats = apexEngineService.getEngineStats();
+        }
+        return engineStats;
+    }
+
+    /**
      * Terminate the Apex engine.
      *
      * @throws ApexException on termination errors
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexMain.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexMain.java
index 14b57b2d1..cea70ce7a 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexMain.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexMain.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modification Copyright (C) 2019 Nordix Foundation.
+ *  Modification Copyright (C) 2019-2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ package org.onap.policy.apex.service.engine.main;
 import java.util.Arrays;
 import java.util.Base64;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.TreeMap;
@@ -34,6 +35,7 @@ import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
 import org.onap.policy.apex.model.basicmodel.service.ModelService;
 import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbum;
 import org.onap.policy.apex.model.contextmodel.concepts.AxContextAlbums;
+import org.onap.policy.apex.model.enginemodel.concepts.AxEngineModel;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.service.parameters.ApexParameterHandler;
 import org.onap.policy.apex.service.parameters.ApexParameters;
@@ -258,8 +260,19 @@ public class ApexMain {
     }
 
     /**
-     * The Class ApexMainShutdownHookClass terminates the Apex engine for the Apex service when its run method is
-     * called.
+     * Get the Engine Stats.
+     */
+    public List<AxEngineModel> getEngineStats() {
+        List<AxEngineModel> engineStats = null;
+        if (activator != null) {
+            engineStats = activator.getEngineStats();
+        }
+        return engineStats;
+    }
+
+    /**
+     * The Class ApexMainShutdownHookClass terminates the Apex engine for the Apex service when its run
+     * method is called.
      */
     private class ApexMainShutdownHookClass extends Thread {
         /**
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexPolicyStatisticsManager.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexPolicyStatisticsManager.java
new file mode 100644
index 000000000..0200af37d
--- /dev/null
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/main/ApexPolicyStatisticsManager.java
@@ -0,0 +1,175 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.policy.apex.service.engine.main;
+
+import java.util.concurrent.atomic.AtomicLong;
+import org.onap.policy.common.utils.services.Registry;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ApexPolicyStatisticsManager {
+    private static final Logger LOGGER = LoggerFactory.getLogger(ApexPolicyStatisticsManager.class);
+    public static final String REG_APEX_PDP_POLICY_COUNTER = "object:pdp/statistics/policy/counter";
+    private final AtomicLong policyDeployCount = new AtomicLong(0);
+    private final AtomicLong policyDeploySuccessCount = new AtomicLong(0);
+    private final AtomicLong policyDeployFailCount = new AtomicLong(0);
+    private final AtomicLong policyExecutedCount = new AtomicLong(0);
+    private final AtomicLong policyExecutedSuccessCount = new AtomicLong(0);
+    private final AtomicLong policyExecutedFailCount = new AtomicLong(0);
+
+    /**
+     * Constructs the object.
+     */
+    public ApexPolicyStatisticsManager() {
+        super();
+    }
+
+    /**
+     * To get the ApexPolicyStatisticsManager in Registry.
+     *
+     * @return ApexPolicyStatisticsManager The obj in Registry.
+     */
+    public static ApexPolicyStatisticsManager getInstanceFromRegistry() {
+        ApexPolicyStatisticsManager instance = null;
+        try {
+            instance = Registry.get(ApexPolicyStatisticsManager.REG_APEX_PDP_POLICY_COUNTER);
+        } catch (IllegalArgumentException e) {
+            LOGGER.debug("ApexPolicyStatisticsManager is not registered yet");
+        }
+        return instance;
+    }
+
+
+    /**
+     * Update the policy deploy count.
+     */
+    public void updatePolicyDeployCounter(final boolean isSuccessful) {
+        this.updatepPolicyDeployCount();
+        if (!isSuccessful) {
+            this.updatePolicyDeployFailCount();
+        } else {
+            this.updatePolicyDeploySuccessCount();
+        }
+    }
+
+    /**
+     * Update the policy executed count.
+     */
+    public void updatePolicyExecutedCounter(final boolean isSuccessful) {
+        this.updatePolicyExecutedCount();
+        if (isSuccessful) {
+            this.updatePolicyExecutedSuccessCount();
+        } else {
+            this.updatePolicyExecutedFailCount();
+        }
+    }
+
+    /**
+     * Method to update the total policy deploy count.
+     *
+     * @return the updated value of policyDeployCount
+     */
+    private long updatepPolicyDeployCount() {
+        return policyDeployCount.incrementAndGet();
+    }
+
+    /**
+     * Method to update the total policy deploy failed count.
+     *
+     * @return the updated value of totalPolicyDeployCount
+     */
+    private long updatePolicyDeployFailCount() {
+        return policyDeployFailCount.incrementAndGet();
+    }
+
+    /**
+     * Method to update the policy deploy success count.
+     *
+     * @return the updated value of policyDeploySuccessCount
+     */
+    private long updatePolicyDeploySuccessCount() {
+        return policyDeploySuccessCount.incrementAndGet();
+    }
+
+
+    /**
+     * Method to update the total policy executed count.
+     *
+     * @return the updated value of policyExecutedCount
+     */
+    private long updatePolicyExecutedCount() {
+        return policyExecutedCount.incrementAndGet();
+    }
+
+    /**
+     * Method to update the policy executed success count.
+     *
+     * @return the updated value of policyExecutedSuccessCount
+     */
+    private long updatePolicyExecutedSuccessCount() {
+        return policyExecutedSuccessCount.incrementAndGet();
+    }
+
+    /**
+     * Method to update the policy executed failure count.
+     *
+     * @return the updated value of policyExecutedFailCount
+     */
+    private long updatePolicyExecutedFailCount() {
+        return policyExecutedFailCount.incrementAndGet();
+    }
+
+    /**
+     * Reset all the statistics counts to 0.
+     */
+    public void resetAllStatistics() {
+        policyDeployCount.set(0L);
+        policyDeployFailCount.set(0L);
+        policyDeploySuccessCount.set(0L);
+        policyExecutedCount.set(0L);
+        policyExecutedSuccessCount.set(0L);
+        policyExecutedFailCount.set(0L);
+    }
+
+    public long getPolicyDeployCount() {
+        return policyDeployCount.get();
+    }
+
+    public long getPolicyDeployFailCount() {
+        return policyDeployFailCount.get();
+    }
+
+    public long getPolicyDeploySuccessCount() {
+        return policyDeploySuccessCount.get();
+    }
+
+    public long getPolicyExecutedCount() {
+        return policyExecutedCount.get();
+    }
+
+    public long getPolicyExecutedSuccessCount() {
+        return policyExecutedSuccessCount.get();
+    }
+
+    public long getPolicyExecutedFailCount() {
+        return policyExecutedFailCount.get();
+    }
+}
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/EngineService.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/EngineService.java
index ef17a8eab..48595c5b0 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/EngineService.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/EngineService.java
@@ -1,19 +1,20 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 Nordix Foundation.
  * ================================================================================
  * 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=========================================================
  */
@@ -21,9 +22,10 @@
 package org.onap.policy.apex.service.engine.runtime;
 
 import java.util.Collection;
-
+import java.util.List;
 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.onap.policy.apex.model.enginemodel.concepts.AxEngineModel;
 import org.onap.policy.apex.model.enginemodel.concepts.AxEngineState;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 
@@ -154,7 +156,7 @@ public interface EngineService {
 
     /**
      * This method checks if all Apex engines in the engine service are started.
-     * 
+     *
      * <p>Note: an engine can be both not stopped and not started, for example, when it is starting or
      * stopping
      *
@@ -164,7 +166,7 @@ public interface EngineService {
 
     /**
      * This method checks if an Apex engine in the engine service is started.
-     * 
+     *
      * <p>Note: an engine can be both not stopped and not started, for example, when it is starting or
      * stopping
      *
@@ -175,7 +177,7 @@ public interface EngineService {
 
     /**
      * This method checks if all Apex engines in the engine service are stopped.
-     * 
+     *
      * <p>Note: an engine can be both not stopped and not started, for example, when it is starting or
      * stopping
      *
@@ -185,7 +187,7 @@ public interface EngineService {
 
     /**
      * This method checks if an Apex engine in the engine service is stopped.
-     * 
+     *
      * <p>Note: an engine can be both not stopped and not started, for example, when it is starting or
      * stopping
      *
@@ -219,6 +221,13 @@ public interface EngineService {
     String getStatus(AxArtifactKey engineKey) throws ApexException;
 
     /**
+     * Get the engine status information.
+     *
+     * @return the Apex status information
+     */
+    List<AxEngineModel> getEngineStats();
+
+    /**
      * This method gets the runtime information of all Apex engines in the engine service.
      *
      * @param engineKey the engine key
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineServiceImpl.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineServiceImpl.java
index f5e36e864..a558b9946 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineServiceImpl.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineServiceImpl.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,9 +22,11 @@
 package org.onap.policy.apex.service.engine.runtime.impl;
 
 import java.io.ByteArrayInputStream;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.BlockingQueue;
@@ -37,6 +39,7 @@ import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
 import org.onap.policy.apex.model.basicmodel.handling.ApexModelException;
 import org.onap.policy.apex.model.basicmodel.handling.ApexModelReader;
 import org.onap.policy.apex.model.basicmodel.service.ModelService;
+import org.onap.policy.apex.model.enginemodel.concepts.AxEngineModel;
 import org.onap.policy.apex.model.enginemodel.concepts.AxEngineState;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.service.engine.event.ApexEvent;
@@ -704,13 +707,25 @@ public final class EngineServiceImpl implements EngineService, EngineServiceEven
             LOGGER.warn(ENGINE_KEY_PREAMBLE + engineKey.getId() + NOT_FOUND_SUFFIX);
             throw new ApexException(ENGINE_KEY_PREAMBLE + engineKey.getId() + NOT_FOUND_SUFFIX);
         }
-
         // Return the information for this worker
         return engineWorkerMap.get(engineKey).getStatus(engineKey);
     }
 
     /**
      * {@inheritDoc}.
+     *
+     */
+    @Override
+    public List<AxEngineModel> getEngineStats() {
+        List<AxEngineModel> engineStats = new ArrayList<>();
+        for (final EngineService engine : engineWorkerMap.values()) {
+            engineStats.addAll(engine.getEngineStats());
+        }
+        return engineStats;
+    }
+
+    /**
+     * {@inheritDoc}.
      */
     @Override
     public String getRuntimeInfo(final AxArtifactKey engineKey) throws ApexException {
diff --git a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorker.java b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorker.java
index e00515bd0..5b5c7f49b 100644
--- a/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorker.java
+++ b/services/services-engine/src/main/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorker.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,8 +27,10 @@ import com.google.gson.JsonElement;
 import com.google.gson.JsonParser;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.BlockingQueue;
@@ -54,6 +56,7 @@ import org.onap.policy.apex.model.enginemodel.concepts.AxEngineState;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.service.engine.event.ApexEvent;
 import org.onap.policy.apex.service.engine.event.impl.enevent.ApexEvent2EnEventConverter;
+import org.onap.policy.apex.service.engine.main.ApexPolicyStatisticsManager;
 import org.onap.policy.apex.service.engine.runtime.ApexEventListener;
 import org.onap.policy.apex.service.engine.runtime.EngineService;
 import org.onap.policy.apex.service.engine.runtime.EngineServiceEventInterface;
@@ -465,6 +468,16 @@ final class EngineWorker implements EngineService {
      * {@inheritDoc}.
      */
     @Override
+    public List<AxEngineModel> getEngineStats() {
+        List<AxEngineModel> engineStats = new ArrayList<>();
+        engineStats.add(engine.getEngineStatus());
+        return engineStats;
+    }
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
     public String getRuntimeInfo(final AxArtifactKey engineKey) {
         // We'll build up the JSON string for runtime information bit by bit
         final StringBuilder runtimeJsonStringBuilder = new StringBuilder();
@@ -594,13 +607,13 @@ final class EngineWorker implements EngineService {
                     LOGGER.debug("Engine {} processing interrupted ", engineWorkerKey);
                     break;
                 }
-
+                boolean executedResult = false;
                 try {
                     if (event != null) {
                         debugEventIfDebugEnabled(event);
 
                         final EnEvent enevent = apexEnEventConverter.fromApexEvent(event);
-                        engine.handleEvent(enevent);
+                        executedResult = engine.handleEvent(enevent);
                     }
                 } catch (final ApexException e) {
                     LOGGER.warn("Engine {} failed to process event {}", engineWorkerKey, event.toString(), e);
@@ -608,6 +621,10 @@ final class EngineWorker implements EngineService {
                     LOGGER.warn("Engine {} terminated processing event {}", engineWorkerKey, event.toString(), e);
                     stopFlag = true;
                 }
+                ApexPolicyStatisticsManager apexPolicyCounter = ApexPolicyStatisticsManager.getInstanceFromRegistry();
+                if (!stopFlag && apexPolicyCounter != null) {
+                    apexPolicyCounter.updatePolicyExecutedCounter(executedResult);
+                }
             }
             LOGGER.debug("Engine {} completed processing", engineWorkerKey);
         }
diff --git a/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/engdep/DummyEngineService.java b/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/engdep/DummyEngineService.java
index ef54e8e0e..f917fcf48 100644
--- a/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/engdep/DummyEngineService.java
+++ b/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/engdep/DummyEngineService.java
@@ -1,19 +1,20 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 Nordix Foundation.
  * ================================================================================
  * 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=========================================================
  */
@@ -27,6 +28,7 @@ import java.util.List;
 import org.apache.commons.lang3.NotImplementedException;
 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.onap.policy.apex.model.enginemodel.concepts.AxEngineModel;
 import org.onap.policy.apex.model.enginemodel.concepts.AxEngineState;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.service.engine.runtime.ApexEventListener;
@@ -94,7 +96,7 @@ public class DummyEngineService implements EngineService {
     @Override
     public AxArtifactKey getApexModelKey() {
         modelKeyGetCalled++;
-        
+
         return new AxArtifactKey("DummyApexModelKey:0.0.1");
     }
 
@@ -128,6 +130,14 @@ public class DummyEngineService implements EngineService {
      * {@inheritDoc}.
      */
     @Override
+    public List<AxEngineModel> getEngineStats() {
+        throw new NotImplementedException("Not implemented on dummy class");
+    }
+
+    /**
+     * {@inheritDoc}.
+     */
+    @Override
     public void startAll() throws ApexException {
         throw new NotImplementedException("Not implemented on dummy class");
     }
diff --git a/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorkerTest.java b/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorkerTest.java
index a6040d969..dee58b8e9 100644
--- a/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorkerTest.java
+++ b/services/services-engine/src/test/java/org/onap/policy/apex/service/engine/runtime/impl/EngineWorkerTest.java
@@ -1,19 +1,20 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 Nordix Foundation.
  * ================================================================================
  * 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=========================================================
  */
@@ -55,7 +56,9 @@ import org.onap.policy.apex.model.enginemodel.concepts.AxEngineState;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
 import org.onap.policy.apex.model.utilities.TextFileUtils;
 import org.onap.policy.apex.service.engine.event.ApexEvent;
+import org.onap.policy.apex.service.engine.main.ApexPolicyStatisticsManager;
 import org.onap.policy.common.parameters.ParameterService;
+import org.onap.policy.common.utils.services.Registry;
 
 /**
  * Test the engine worker class.
@@ -69,7 +72,7 @@ public class EngineWorkerTest {
 
     /**
      * Read the models into strings.
-     * 
+     *
      * @throws IOException on model reading errors
      * @throws ApexModelException on model reading exceptions
      */
@@ -129,6 +132,7 @@ public class EngineWorkerTest {
                         "org.onap.policy.apex.service.engine.runtime.impl.DummySfe");
         engineParameters.getExecutorParameterMap().put("MVEL", jsExecutorParameters);
         ParameterService.register(engineParameters);
+
     }
 
     /**
@@ -151,6 +155,7 @@ public class EngineWorkerTest {
 
     @Test
     public void testEngineWorker() {
+
         BlockingQueue<ApexEvent> eventQueue = new LinkedBlockingQueue<>();
 
         EngineWorker worker = new EngineWorker(new AxArtifactKey("Worker", "0.0.1"), eventQueue, atFactory);
@@ -330,6 +335,8 @@ public class EngineWorkerTest {
 
     @Test
     public void testApexImplModelWIthModel() throws ApexException {
+        Registry.newRegistry();
+        Registry.register(ApexPolicyStatisticsManager.REG_APEX_PDP_POLICY_COUNTER, new ApexPolicyStatisticsManager());
         BlockingQueue<ApexEvent> eventQueue = new LinkedBlockingQueue<>();
 
         EngineWorker worker = new EngineWorker(new AxArtifactKey("Worker", "0.0.1"), eventQueue, atFactory);
@@ -444,5 +451,18 @@ public class EngineWorkerTest {
         }
 
         assertNotNull(worker.getApexModelKey());
+
+        final ApexPolicyStatisticsManager policyCounter = ApexPolicyStatisticsManager.getInstanceFromRegistry();
+        assertNotNull(policyCounter);
+        assertEquals(policyCounter.getPolicyExecutedCount(),
+                policyCounter.getPolicyExecutedFailCount() + policyCounter.getPolicyExecutedSuccessCount());
+        policyCounter.resetAllStatistics();
+        assertEquals(0, policyCounter.getPolicyExecutedCount());
+        assertEquals(0, policyCounter.getPolicyExecutedFailCount());
+        assertEquals(0, policyCounter.getPolicyExecutedSuccessCount());
+        assertEquals(0, policyCounter.getPolicyDeployCount());
+        assertEquals(0, policyCounter.getPolicyDeployFailCount());
+        assertEquals(0, policyCounter.getPolicyDeploySuccessCount());
+
     }
 }