Enable XMPP stream resumption (#2257)

* feat: Add a metric for XMPP disconnects.

* chore: Update jicoco to 1.1-148 (enable XMPP SM)
  feat: Add an endpointId field to StartEvent.
  feat: Move jwt utils from jibri into jicoco-jwt.
  chore: Update jitsi-metaconfig.
  Add Java 21 to GitHub testing matrix
  feat: Enables stream resumption.

jvb/src/main/kotlin/org/jitsi/videobridge/metrics/VideobridgeMetrics.kt

@@ -247,6 +247,11 @@ object VideobridgeMetrics {
         "Total duration of video received, in milliseconds (each SSRC counts separately)."
     )
 
+    val xmppDisconnects = metricsContainer.registerCounter(
+        "xmpp_disconnects",
+        "The number of times one of the XMPP connections has disconnected."
+    )
+
     private val tossedPacketsEnergyBuckets =
         listOf(0, 7, 15, 23, 31, 39, 47, 55, 63, 71, 79, 87, 95, 103, 111, 119, 127).map { it.toDouble() }
             .toDoubleArray()

jvb/src/main/kotlin/org/jitsi/videobridge/xmpp/XmppConnection.kt

@@ -20,12 +20,14 @@ import org.jitsi.nlj.stats.DelayStats
 import org.jitsi.utils.OrderedJsonObject
 import org.jitsi.utils.logging2.cdebug
 import org.jitsi.utils.logging2.createLogger
+import org.jitsi.videobridge.metrics.VideobridgeMetrics
 import org.jitsi.videobridge.metrics.VideobridgeMetricsContainer
 import org.jitsi.videobridge.xmpp.config.XmppClientConnectionConfig.Companion.config
 import org.jitsi.xmpp.extensions.colibri.ForcefulShutdownIQ
 import org.jitsi.xmpp.extensions.colibri.GracefulShutdownIQ
 import org.jitsi.xmpp.extensions.colibri2.ConferenceModifyIQ
 import org.jitsi.xmpp.extensions.health.HealthCheckIQ
+import org.jitsi.xmpp.mucclient.ConnectionStateListener
 import org.jitsi.xmpp.mucclient.IQListener
 import org.jitsi.xmpp.mucclient.MucClient
 import org.jitsi.xmpp.mucclient.MucClientConfiguration
@@ -64,6 +66,14 @@ class XmppConnection : IQListener {
                 registerIQ(GracefulShutdownIQ())
                 registerIQ(ConferenceModifyIQ.ELEMENT, ConferenceModifyIQ.NAMESPACE, false)
                 setIQListener(this@XmppConnection)
+                addConnectionStateListener(object : ConnectionStateListener {
+                    override fun connected(mucClient: MucClient) {}
+                    override fun closed(mucClient: MucClient) = VideobridgeMetrics.xmppDisconnects.inc()
+                    override fun closedOnError(mucClient: MucClient) = VideobridgeMetrics.xmppDisconnects.inc()
+                    override fun reconnecting(mucClient: MucClient) {}
+                    override fun reconnectionFailed(mucClient: MucClient) {}
+                    override fun pingFailed(mucClient: MucClient) {}
+                })
             }
 
             config.clientConfigs.forEach { cfg -> mucClientManager.addMucClient(cfg) }

pom.xml

@@ -28,7 +28,7 @@
         <kotest.version>5.9.1</kotest.version>
         <junit.version>5.10.2</junit.version>
         <jitsi.utils.version>1.0-133-g6af1020</jitsi.utils.version>
-        <jicoco.version>1.1-143-g175c44b</jicoco.version>
+        <jicoco.version>1.1-148-g3afa2ac</jicoco.version>
         <mockk.version>1.13.11</mockk.version>
         <ktlint-maven-plugin.version>3.2.0</ktlint-maven-plugin.version>
         <maven-shade-plugin.version>3.6.0</maven-shade-plugin.version>