package com.intrbiz.bergamot.worker.engine.agent;
import java.util.UUID;
import org.apache.log4j.Logger;
import com.intrbiz.bergamot.agent.server.BergamotAgentServerHandler;
import com.intrbiz.bergamot.model.message.agent.check.CheckWho;
import com.intrbiz.bergamot.model.message.agent.stat.WhoStat;
import com.intrbiz.bergamot.model.message.check.ExecuteCheck;
import com.intrbiz.bergamot.model.message.result.ActiveResultMO;
import com.intrbiz.bergamot.worker.engine.AbstractExecutor;
import com.intrbiz.gerald.polyakov.gauge.IntegerGaugeReading;
/**
* Check active users of a Bergamot Agent
*/
public class UsersExecutor extends AbstractExecutor<AgentEngine>
{
public static final String NAME = "users";
private Logger logger = Logger.getLogger(UsersExecutor.class);
public UsersExecutor()
{
super();
}
/**
* Only execute Checks where the engine == "agent"
*/
@Override
public boolean accept(ExecuteCheck task)
{
return AgentEngine.NAME.equals(task.getEngine()) && NAME.equals(task.getExecutor());
}
@Override
public void execute(ExecuteCheck executeCheck)
{
if (logger.isTraceEnabled()) logger.trace("Checking Bergamot Agent active users");
try
{
// check the host presence
UUID agentId = executeCheck.getAgentId();
if (agentId == null) throw new RuntimeException("No agent id was given");
// lookup the agent
BergamotAgentServerHandler agent = this.getEngine().getAgentServer().getRegisteredAgent(agentId);
if (agent != null)
{
// get the user stats
long sent = System.nanoTime();
agent.sendMessageToAgent(new CheckWho(), (response) -> {
double runtime = ((double)(System.nanoTime() - sent)) / 1000_000D;
WhoStat stat = (WhoStat) response;
if (logger.isTraceEnabled()) logger.trace("Got who in " + runtime + "ms: " + stat);
// apply the check
this.publishActiveResult(executeCheck, new ActiveResultMO().fromCheck(executeCheck).applyGreaterThanThreshold(
stat.getUsers().size(),
executeCheck.getIntParameter("warning", 2),
executeCheck.getIntParameter("critical", 5),
stat.getUsers().size() + " active users"
).runtime(runtime));
// readings
this.publishReading(executeCheck, new IntegerGaugeReading("active-users", null, stat.getUsers().size(), executeCheck.getIntParameter("warning", 2), executeCheck.getIntParameter("critical", 5), 0, Integer.MAX_VALUE));
});
}
else
{
// raise an error
this.publishActiveResult(executeCheck, new ActiveResultMO().fromCheck(executeCheck).disconnected("Bergamot Agent disconnected"));
}
}
catch (Exception e)
{
this.publishActiveResult(executeCheck, new ActiveResultMO().fromCheck(executeCheck).error(e));
}
}
}