package com.intrbiz.bergamot.worker.engine.agent;
import java.text.DecimalFormat;
import java.util.UUID;
import org.apache.log4j.Logger;
import com.intrbiz.bergamot.agent.server.BergamotAgentServerHandler;
import com.intrbiz.bergamot.model.message.agent.check.CheckMem;
import com.intrbiz.bergamot.model.message.agent.stat.MemStat;
import com.intrbiz.bergamot.model.message.check.ExecuteCheck;
import com.intrbiz.bergamot.model.message.result.ActiveResultMO;
import com.intrbiz.bergamot.util.UnitUtil;
import com.intrbiz.bergamot.worker.engine.AbstractExecutor;
import com.intrbiz.gerald.polyakov.gauge.DoubleGaugeReading;
/**
* Check the memory usage of a Bergamot Agent
*/
public class MemoryExecutor extends AbstractExecutor<AgentEngine>
{
public static final String NAME = "memory";
private static final DecimalFormat DFMT = new DecimalFormat("0.00");
private Logger logger = Logger.getLogger(MemoryExecutor.class);
public MemoryExecutor()
{
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 Memory Usage");
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 CPU stats
long sent = System.nanoTime();
agent.sendMessageToAgent(new CheckMem(), (response) -> {
double runtime = ((double)(System.nanoTime() - sent)) / 1000_000D;
MemStat stat = (MemStat) response;
if (logger.isTraceEnabled()) logger.trace("Got Memory usage in " + runtime + "ms: " + stat);
// check
this.publishActiveResult(executeCheck, new ActiveResultMO().fromCheck(executeCheck).applyGreaterThanThreshold(
UnitUtil.toRatio((executeCheck.getBooleanParameter("ignore_caches", true) ? stat.getActualUsedMemory() : stat.getUsedMemory()), stat.getTotalMemory()),
executeCheck.getPercentParameter("warning", 0.8F),
executeCheck.getPercentParameter("critical", 0.9F),
"Memory: " + (stat.getActualUsedMemory() / UnitUtil.Mi) + " MiB of " + (stat.getTotalMemory() / UnitUtil.Mi) + " MiB (" + DFMT.format(UnitUtil.toPercent(stat.getActualUsedMemory(), stat.getTotalMemory())) + "%) used " + ((stat.getUsedMemory() - stat.getActualUsedMemory()) / UnitUtil.Mi) + " MiB caches"
).runtime(runtime));
// readings
double warning = (executeCheck.getPercentParameter("warning", 0.8F) * stat.getTotalMemory()) / UnitUtil.Mi;
double critical = (executeCheck.getPercentParameter("critical", 0.9F) * stat.getTotalMemory()) / UnitUtil.Mi;
this.publishReading(executeCheck,
new DoubleGaugeReading("actual-used", "MiB", (double) (stat.getActualUsedMemory() / UnitUtil.Mi), warning, critical, 0D, (double) (stat.getTotalMemory() / UnitUtil.Mi)),
new DoubleGaugeReading("used", "MiB", (double) (stat.getUsedMemory() / UnitUtil.Mi), warning, critical, 0D, (double) (stat.getTotalMemory() / UnitUtil.Mi))
);
});
}
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));
}
}
}