plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtGetHostStatsCommandWrapper.java

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// to you under the Apache License, Version 2.0 (the
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package com.cloud.hypervisor.kvm.resource.wrapper;

import com.cloud.agent.api.Answer;
import com.cloud.agent.api.GetHostStatsAnswer;
import com.cloud.agent.api.GetHostStatsCommand;
import com.cloud.agent.api.HostStatsEntry;
import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
import com.cloud.resource.CommandWrapper;
import com.cloud.resource.ResourceWrapper;
import com.cloud.utils.Pair;
import org.apache.cloudstack.utils.linux.CPUStat;
import org.apache.cloudstack.utils.linux.MemStat;

@ResourceWrapper(handles =  GetHostStatsCommand.class)
public final class LibvirtGetHostStatsCommandWrapper extends CommandWrapper<GetHostStatsCommand, Answer, LibvirtComputingResource> {


    @Override
    public Answer execute(final GetHostStatsCommand command, final LibvirtComputingResource libvirtComputingResource) {
        CPUStat cpuStat = libvirtComputingResource.getCPUStat();
        MemStat memStat = libvirtComputingResource.getMemStat();

        final double cpuUtil = cpuStat.getCpuUsedPercent();
        final double loadAvg = cpuStat.getCpuLoadAverage();

        final Pair<Double, Double> nicStats = libvirtComputingResource.getNicStats(libvirtComputingResource.getPublicBridgeName());

        final HostStatsEntry hostStats = new HostStatsEntry(command.getHostId(), cpuUtil, nicStats.first() / 1024, nicStats.second() / 1024, "host", memStat.getTotal() / 1024, memStat.getAvailable() / 1024, 0, loadAvg);
        return new GetHostStatsAnswer(command, hostStats);
    }
}