Fix for backlog reporting when draining proxy (#2)

Author: William Dowling

.mvn/extensions.xml

@@ -0,0 +1,10 @@
+<extensions xmlns="http://maven.apache.org/EXTENSIONS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/EXTENSIONS/1.0.0 http://maven.apache.org/xsd/core-extensions-1.0.0.xsd">
+
+    <extension>
+        <groupId>me.qoomon</groupId>
+        <artifactId>maven-git-versioning-extension</artifactId>
+        <version>7.4.0</version>
+    </extension>
+
+</extensions>

.mvn/maven-git-versioning-extension.xml

@@ -0,0 +1,22 @@
+<configuration xmlns="https://github.com/qoomon/maven-git-versioning-extension"
+               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+               xsi:schemaLocation="https://github.com/qoomon/maven-git-versioning-extension https://qoomon.github.io/maven-git-versioning-extension/configuration-7.0.0.xsd">
+
+    <refs considerTagsOnBranches="true">
+        <ref type="branch">
+            <pattern>.+</pattern>
+            <version>${ref}-SNAPSHOT</version>
+        </ref>
+
+        <ref type="tag">
+            <pattern>.+</pattern>
+            <version>${ref}</version>
+        </ref>
+    </refs>
+
+    <!-- optional fallback configuration in case of no matching ref configuration-->
+    <rev>
+        <version>${version}</version>
+    </rev>
+
+</configuration>

proxy/pom.xml

@@ -80,7 +80,7 @@
       <plugin>
         <groupId>com.cosium.code</groupId>
         <artifactId>git-code-format-maven-plugin</artifactId>
-        <version>3.3</version>
+        <version>4.3</version>
         <executions>
           <execution>
             <id>format-code</id>

proxy/src/main/java/com/wavefront/agent/queueing/QueueController.java

@@ -156,12 +156,15 @@ private void printQueueStats() {
 
     // 2. grab queue sizes (points/etc count)
     long actualWeight = 0L;
-    for (QueueProcessor<T> task : processorTasks) {
-      TaskQueue<T> taskQueue = task.getTaskQueue();
-      if ((taskQueue != null) && (taskQueue.weight() != null)) {
-        actualWeight += taskQueue.weight();
+    if (backlog > 0) {
+      for (QueueProcessor<T> task : processorTasks) {
+        TaskQueue<T> taskQueue = task.getTaskQueue();
+        if ((taskQueue != null) && (taskQueue.weight() != null)) {
+          actualWeight += taskQueue.weight();
+        }
       }
     }
+
     long previousWeight = currentWeight.getAndSet(actualWeight);
 
     // 4. print stats when there's backlog