Merge pull request #3381 from YevhenBondarenko/queue/improvements

added logs for in memory queue

common/queue/src/main/java/org/thingsboard/server/queue/memory/InMemoryStorage.java

@@ -23,16 +23,29 @@ import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.Executors;
 import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 
 @Slf4j
 public final class InMemoryStorage {
     private static InMemoryStorage instance;
     private final ConcurrentHashMap<String, BlockingQueue<TbQueueMsg>> storage;
+    private static ScheduledExecutorService statExecutor;
 
     private InMemoryStorage() {
         storage = new ConcurrentHashMap<>();
+        statExecutor = Executors.newSingleThreadScheduledExecutor();
+        statExecutor.scheduleAtFixedRate(this::printStats, 60, 60, TimeUnit.SECONDS);
+    }
+
+    private void printStats() {
+        storage.forEach((topic, queue) -> {
+            if (queue.size() > 0) {
+                log.debug("Topic: [{}], Queue size: [{}]", topic, queue.size());
+            }
+        });
     }
 
     public static InMemoryStorage getInstance() {
@@ -77,4 +90,9 @@ public final class InMemoryStorage {
         storage.clear();
     }
 
+    public void destroy() {
+        if (statExecutor != null) {
+            statExecutor.shutdownNow();
+        }
+    }
 }

common/queue/src/main/java/org/thingsboard/server/queue/memory/InMemoryTbQueueProducer.java

@@ -53,6 +53,6 @@ public class InMemoryTbQueueProducer<T extends TbQueueMsg> implements TbQueuePro
 
     @Override
     public void stop() {
-
+        storage.destroy();
     }
 }