queue request template: sleep on exception shortened according to the stopwatch. test adjusted

common/queue/src/main/java/org/thingsboard/server/queue/common/DefaultTbQueueRequestTemplate.java

@@ -21,6 +21,7 @@ import com.google.common.util.concurrent.SettableFuture;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
+import org.thingsboard.common.util.TbStopWatch;
 import org.thingsboard.common.util.ThingsBoardThreadFactory;
 import org.thingsboard.server.common.msg.queue.TopicPartitionInfo;
 import org.thingsboard.server.queue.TbQueueAdmin;
@@ -95,11 +96,13 @@ public class DefaultTbQueueRequestTemplate<Request extends TbQueueMsg, Response
 
     void mainLoop() {
         while (!stopped) {
+            TbStopWatch sw = TbStopWatch.startNew();
             try {
                 fetchAndProcessResponses();
             } catch (Throwable e) {
-                log.warn("Failed to obtain and process responses from queue. Going to sleep " + pollInterval + "ms", e);
-                sleep();
+                long sleepNanos = TimeUnit.MILLISECONDS.toNanos(this.pollInterval) - sw.stopAndGetTotalTimeNanos();
+                log.warn("Failed to obtain and process responses from queue. Going to sleep " + sleepNanos + "ns", e);
+                sleep(sleepNanos);
             }
         }
     }
@@ -149,9 +152,8 @@ public class DefaultTbQueueRequestTemplate<Request extends TbQueueMsg, Response
         return responseTemplate.poll(pollInterval);
     }
 
-    void sleep() {
-        Thread.yield();
-        LockSupport.parkNanos(1);
+    void sleep(long nanos) {
+        LockSupport.parkNanos(nanos);
     }
 
     void setTimeoutException(UUID key, ResponseMetaData<Response> staleRequest, long currentNs) {

common/queue/src/test/java/org/thingsboard/server/queue/common/DefaultTbQueueRequestTemplateTest.java

@@ -54,13 +54,13 @@ import java.util.concurrent.atomic.AtomicLong;
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.greaterThanOrEqualTo;
 import static org.hamcrest.Matchers.is;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.hamcrest.Matchers.lessThan;
 import static org.mockito.BDDMockito.willAnswer;
 import static org.mockito.BDDMockito.willDoNothing;
 import static org.mockito.BDDMockito.willReturn;
 import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyLong;
+import static org.mockito.Matchers.longThat;
 import static org.mockito.Mockito.RETURNS_DEEP_STUBS;
 import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.mock;
@@ -141,7 +141,7 @@ public class DefaultTbQueueRequestTemplateTest {
     public void givenMainLoop_whenLoopFewTimes_thenVerifyInvocationCount() throws InterruptedException {
         executor = inst.createExecutor();
         CountDownLatch latch = new CountDownLatch(5);
-        willDoNothing().given(inst).sleep();
+        willDoNothing().given(inst).sleep(anyLong());
         willAnswer(invocation -> {
             if (latch.getCount() == 1) {
                 inst.stop(); //stop the loop in natural way
@@ -158,7 +158,7 @@ public class DefaultTbQueueRequestTemplateTest {
         latch.await(10, TimeUnit.SECONDS);
 
         verify(inst, times(5)).fetchAndProcessResponses();
-        verify(inst, times(2)).sleep();
+        verify(inst, times(2)).sleep(longThat(lessThan(TimeUnit.MILLISECONDS.toNanos(inst.pollInterval))));
     }
 
     @Test