Move the metrics update logic to jicoco.

jicofo-common/src/main/kotlin/org/jitsi/jicofo/metrics/JicofoMetricsContainer.kt

@@ -21,66 +21,18 @@ import org.jitsi.config.JitsiConfig
 import org.jitsi.jicofo.TaskPools
 import org.jitsi.metaconfig.config
 import org.jitsi.metrics.MetricsContainer
-import org.jitsi.utils.logging2.createLogger
+import org.jitsi.metrics.MetricsUpdater
 import java.time.Duration
-import java.util.concurrent.CopyOnWriteArrayList
-import java.util.concurrent.ScheduledFuture
-import java.util.concurrent.TimeUnit
 
 class JicofoMetricsContainer private constructor() : MetricsContainer(namespace = "jitsi_jicofo") {
-    private val logger = createLogger()
-    private val subtasks: MutableList<() -> Unit> = CopyOnWriteArrayList()
+    val metricsUpdater = MetricsUpdater(TaskPools.scheduledPool, updateInterval)
 
-    private var updateTask: ScheduledFuture<*>? = null
-
-    // Allow updates to be disabled for tests
-    var disablePeriodicUpdates = false
-
-    fun addUpdateTask(subtask: () -> Unit) {
-        if (disablePeriodicUpdates) {
-            logger.warn("Periodic updates are disabled, will not execute update task.")
-            return
-        }
-
-        subtasks.add(subtask)
-        synchronized(this) {
-            if (updateTask == null) {
-                logger.info("Scheduling metrics update task with interval $updateInterval.")
-                updateTask = TaskPools.scheduledPool.scheduleAtFixedRate(
-                    { updateMetrics() },
-                    0,
-                    updateInterval.toMillis(),
-                    TimeUnit.MILLISECONDS
-                )
-            }
-        }
-    }
-
-    fun updateMetrics() {
-        synchronized(this) {
-            logger.debug("Running ${subtasks.size} subtasks.")
-            subtasks.forEach {
-                try {
-                    it.invoke()
-                } catch (e: Exception) {
-                    logger.warn("Exception while running subtask", e)
-                }
-            }
+    companion object {
+        private val updateInterval: Duration by config {
+            "jicofo.metrics.update-interval".from(JitsiConfig.newConfig)
         }
-    }
-
-    fun stop() = synchronized(this) {
-        updateTask?.cancel(false)
-        updateTask = null
-        subtasks.clear()
-    }
 
-    companion object {
         @JvmStatic
         val instance = JicofoMetricsContainer()
-
-        val updateInterval: Duration by config {
-            "jicofo.metrics.update-interval".from(JitsiConfig.newConfig)
-        }
     }
 }

jicofo-selector/src/main/kotlin/org/jitsi/jicofo/bridge/BridgeSelector.kt

@@ -63,7 +63,7 @@ class BridgeSelector @JvmOverloads constructor(
     private val bridges: MutableMap<Jid, Bridge> = mutableMapOf()
 
     init {
-        JicofoMetricsContainer.instance.addUpdateTask { updateMetrics() }
+        JicofoMetricsContainer.instance.metricsUpdater.addUpdateTask { updateMetrics() }
     }
 
     val operationalBridgeCount: Int

jicofo-selector/src/test/kotlin/org/jitsi/jicofo/JicofoSelectorKotestProjectConfig.kt

@@ -28,6 +28,6 @@ class JicofoSelectorKotestProjectConfig : AbstractProjectConfig() {
         MetaconfigSettings.cacheEnabled = false
 
         JicofoMetricsContainer.instance.checkForNameConflicts = false
-        JicofoMetricsContainer.instance.disablePeriodicUpdates = true
+        JicofoMetricsContainer.instance.metricsUpdater.disablePeriodicUpdates = true
     }
 }

jicofo/src/main/java/org/jitsi/jicofo/rest/Statistics.java

@@ -41,7 +41,7 @@ public String getStats()
         JicofoServices jicofoServices
                 = Objects.requireNonNull(JicofoServices.getJicofoServicesSingleton(), "jicofoServices");
         // Update the metrics that are usually updated periodically so we read the current values.
-        JicofoMetricsContainer.getInstance().updateMetrics();
+        JicofoMetricsContainer.getInstance().getMetricsUpdater().updateMetrics();
         return jicofoServices.getStats().toJSONString();
     }
 }

jicofo/src/main/kotlin/org/jitsi/jicofo/FocusManager.kt

@@ -74,7 +74,7 @@ class FocusManager(
     private val pinnedConferences: MutableMap<EntityBareJid, PinnedConference> = HashMap()
 
     fun start() {
-        metricsContainer.addUpdateTask { updateMetrics() }
+        metricsContainer.metricsUpdater.addUpdateTask { updateMetrics() }
     }
 
     /**

jicofo/src/main/kotlin/org/jitsi/jicofo/JicofoServices.kt

@@ -120,7 +120,7 @@ class JicofoServices {
 
     init {
         if (jibriDetector != null || sipJibriDetector != null) {
-            JicofoMetricsContainer.instance.addUpdateTask {
+            JicofoMetricsContainer.instance.metricsUpdater.addUpdateTask {
                 JibriDetectorMetrics.updateMetrics(jibriDetector = jibriDetector, sipJibriDetector = sipJibriDetector)
             }
         }
@@ -167,7 +167,7 @@ class JicofoServices {
 
     init {
         logger.info("Registering GlobalMetrics periodic updates.")
-        JicofoMetricsContainer.instance.addUpdateTask { GlobalMetrics.update() }
+        JicofoMetricsContainer.instance.metricsUpdater.addUpdateTask { GlobalMetrics.update() }
     }
 
     fun shutdown() {
@@ -176,7 +176,7 @@ class JicofoServices {
             it.shutdown()
         }
         healthChecker?.shutdown()
-        JicofoMetricsContainer.instance.stop()
+        JicofoMetricsContainer.instance.metricsUpdater.stop()
         jettyServer?.stop()
         jvbDoctor?.let {
             bridgeSelector.removeHandler(it)

jicofo/src/main/kotlin/org/jitsi/jicofo/xmpp/XmppServices.kt

@@ -69,7 +69,7 @@ class XmppServices(
             breweryJid
         ).apply {
             init()
-            JicofoMetricsContainer.instance.addUpdateTask { updateMetrics() }
+            JicofoMetricsContainer.instance.metricsUpdater.addUpdateTask { updateMetrics() }
         }
     } ?: run {
         logger.info("No Jigasi detector configured.")

pom.xml

@@ -44,7 +44,7 @@
     <slf4j.version>1.7.32</slf4j.version>
     <jersey.version>3.0.10</jersey.version>
     <jitsi.utils.version>1.0-127-g6c65524</jitsi.utils.version>
-    <jicoco.version>1.1-127-gf49982f</jicoco.version>
+    <jicoco.version>1.1-132-g906f995</jicoco.version>
     <ktlint-maven-plugin.version>3.0.0</ktlint-maven-plugin.version>
     <spotbugs.version>4.6.0</spotbugs.version>
     <junit.version>5.10.0</junit.version>