Port totalConferencesCompleted stat to Metric. (#1931)

* ref: Port totalConferencesCompleted stat to Metric.
* ref: Rename totalConferencesCreated variable and metric.

Author: alexcsf

jvb/src/main/java/org/jitsi/videobridge/Conference.java

@@ -294,7 +294,7 @@ else if (requestIQ instanceof ConferenceModifyIQ)
         }, 3, 3, TimeUnit.SECONDS);
 
         Videobridge.Statistics videobridgeStatistics = videobridge.getStatistics();
-        videobridgeStatistics.totalConferencesCreated.inc();
+        videobridgeStatistics.conferencesCreated.inc();
         epConnectionStatusMonitor = new EndpointConnectionStatusMonitor(this, TaskPools.SCHEDULED_POOL, logger);
         epConnectionStatusMonitor.start();
     }
@@ -640,7 +640,7 @@ private void updateStatisticsOnExpire()
 
         Videobridge.Statistics videobridgeStatistics = getVideobridge().getStatistics();
 
-        videobridgeStatistics.totalConferencesCompleted.incrementAndGet();
+        videobridgeStatistics.conferencesCompleted.incAndGet();
         videobridgeStatistics.totalConferenceSeconds.addAndGet(durationSeconds);
 
         videobridgeStatistics.totalBytesReceived.addAndGet(statistics.totalBytesReceived.get());

jvb/src/main/java/org/jitsi/videobridge/Videobridge.java

@@ -962,14 +962,16 @@ public static class Statistics
          * The cumulative/total number of conferences completed/expired on this
          * {@link Videobridge}.
          */
-        public AtomicInteger totalConferencesCompleted = new AtomicInteger(0);
+        public CounterMetric conferencesCompleted = VideobridgeMetricsContainer.getInstance().registerCounter(
+                "conferences_completed",
+                "The total number of conferences completed/expired on the Videobridge.");
 
         /**
          * The cumulative/total number of conferences created on this
          * {@link Videobridge}.
          */
-        public CounterMetric totalConferencesCreated = VideobridgeMetricsContainer.getInstance().registerCounter(
-                "created_conferences",
+        public CounterMetric conferencesCreated = VideobridgeMetricsContainer.getInstance().registerCounter(
+                "conferences_created",
                 "The total number of conferences created on the Videobridge.");
 
         /**

jvb/src/main/java/org/jitsi/videobridge/stats/VideobridgeStatistics.java

@@ -495,10 +495,10 @@ private void generate0()
                     jvbStats.partiallyFailedConferences.get());
             unlockedSetStat(
                     TOTAL_CONFERENCES_CREATED,
-                    jvbStats.totalConferencesCreated.get());
+                    jvbStats.conferencesCreated.get());
             unlockedSetStat(
                     TOTAL_CONFERENCES_COMPLETED,
-                    jvbStats.totalConferencesCompleted.get());
+                    jvbStats.conferencesCompleted.get());
             unlockedSetStat(
                     TOTAL_ICE_FAILED,
                     jvbStats.totalIceFailed.get());