1 files changed, 13 insertions, 10 deletions
diff --git a/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/dmaap/PnfEventReadyDmaapClient.java b/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/dmaap/PnfEventReadyDmaapClient.java
index 353b4e32c5..70323b726c 100644
--- a/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/dmaap/PnfEventReadyDmaapClient.java
+++ b/bpmn/so-bpmn-infrastructure-common/src/main/java/org/onap/so/bpmn/infrastructure/pnf/dmaap/PnfEventReadyDmaapClient.java
@@ -26,8 +26,7 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
 import javax.ws.rs.core.UriBuilder;
@@ -49,10 +48,7 @@ public class PnfEventReadyDmaapClient implements DmaapClient {
 
     private static final MsoLogger LOGGER = MsoLogger.getMsoLogger(MsoLogger.Catalog.RA, PnfEventReadyDmaapClient.class);
 
-    private static final String JSON_PATH_CORRELATION_ID = "$.pnfRegistrationFields.correlationId";
-    
-    @Autowired
-    private Environment env;
+    private final Environment env;
     private HttpClient httpClient;
     private String dmaapHost;
     private int dmaapPort;
@@ -63,10 +59,15 @@ public class PnfEventReadyDmaapClient implements DmaapClient {
     private String consumerGroup;
     private Map<String, Runnable> pnfCorrelationIdToThreadMap;
     private HttpGet getRequest;
-    private ScheduledExecutorService executor;
     private int dmaapClientDelayInSeconds;
+    private volatile ScheduledThreadPoolExecutor executor;
     private volatile boolean dmaapThreadListenerIsRunning;
 
+    @Autowired
+    public PnfEventReadyDmaapClient(Environment env) {
+        this.env = env;
+    }
+
     public void init() {
         httpClient = HttpClientBuilder.create().build();
         pnfCorrelationIdToThreadMap = new ConcurrentHashMap<>();
@@ -97,7 +98,9 @@ public class PnfEventReadyDmaapClient implements DmaapClient {
 
     private synchronized void startDmaapThreadListener() {
         if (!dmaapThreadListenerIsRunning) {
-            executor = Executors.newScheduledThreadPool(1);
+            executor = new ScheduledThreadPoolExecutor(1);
+            executor.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
+            executor.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
             executor.scheduleWithFixedDelay(new DmaapTopicListenerThread(), 0,
                     dmaapClientDelayInSeconds, TimeUnit.SECONDS);
             dmaapThreadListenerIsRunning = true;
@@ -106,7 +109,7 @@ public class PnfEventReadyDmaapClient implements DmaapClient {
 
     private synchronized void stopDmaapThreadListener() {
         if (dmaapThreadListenerIsRunning) {
-            executor.shutdownNow();
+            executor.shutdown();
             dmaapThreadListenerIsRunning = false;
             executor = null;
         }
@@ -166,7 +169,7 @@ public class PnfEventReadyDmaapClient implements DmaapClient {
             return Collections.emptyList();
         }
 
-        private synchronized void informAboutPnfReadyIfCorrelationIdFound(String correlationId) {
+        private void informAboutPnfReadyIfCorrelationIdFound(String correlationId) {
             Runnable runnable = unregister(correlationId);
             if (runnable != null) {
                 LOGGER.debug("pnf ready event got from dmaap for correlationId: " + correlationId);