/** Remove all registered statistics. */
public void stop() {
// Remove Server to Server Statistic
statisticsManager.removeStatistic(SERVER_2_SERVER_SESSIONS_KEY);
// Remove Active Session Statistic
statisticsManager.removeStatistic(SESSIONS_KEY);
// Remove Packet Traffic Statistic
statisticsManager.removeStatistic(TRAFFIC_KEY);
statisticsManager = null;
// Remove the packet listener.
InterceptorManager.getInstance().removeInterceptor(packetInterceptor);
packetInterceptor = null;
packetCount = null;
}
/** Tracks the total number of packets both incoming and outgoing in the server. */
private void addPacketStatistic() {
// Register a statistic.
Statistic packetTrafficStatistic =
new i18nStatistic(TRAFFIC_KEY, "monitoring", Statistic.Type.rate) {
public double sample() {
return packetCount.getAndSet(0);
}
public boolean isPartialSample() {
return true;
}
};
statisticsManager.addStatistic(TRAFFIC_KEY, packetTrafficStatistic);
}
/**
* Tracks the number of Active Sessions with the server at any point in time. Active Sessions are
* defined as one client connection.
*/
private void addActiveSessionsStatistic() {
// Register a statistic.
Statistic activeSessionStatistic =
new i18nStatistic(SESSIONS_KEY, "monitoring", Statistic.Type.count) {
public double sample() {
return SessionManager.getInstance().getUserSessionsCount(false);
}
public boolean isPartialSample() {
return false;
}
};
statisticsManager.addStatistic(SESSIONS_KEY, activeSessionStatistic);
}
/**
* Tracks the number of Server To Server connections taking place in the server at anyone time.
* This includes both incoming and outgoing connections.
*/
private void addServerToServerStatistic() {
// Register a statistic.
Statistic serverToServerStatistic =
new i18nStatistic(SERVER_2_SERVER_SESSIONS_KEY, "monitoring", Statistic.Type.count) {
public double sample() {
return (SessionManager.getInstance().getIncomingServers().size()
+ SessionManager.getInstance().getOutgoingServers().size());
}
public boolean isPartialSample() {
return false;
}
};
// Add to StatisticsManager
statisticsManager.addStatistic(SERVER_2_SERVER_SESSIONS_KEY, serverToServerStatistic);
}
public void start() {
// Retrieve instance of StatisticsManager
statisticsManager = StatisticsManager.getInstance();
// Register a packet listener so that we can track packet traffic.
packetInterceptor =
new PacketInterceptor() {
public void interceptPacket(
Packet packet, Session session, boolean incoming, boolean processed) {
// Only track processed packets so that we don't count them twice.
if (processed) {
packetCount.incrementAndGet();
}
}
};
InterceptorManager.getInstance().addInterceptor(packetInterceptor);
// Register all statistics.
addServerToServerStatistic();
addActiveSessionsStatistic();
addPacketStatistic();
}