ClusterLoadStatisticProcDir.java

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// to you under the Apache License, Version 2.0 (the
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//
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package org.apache.doris.common.proc;

import org.apache.doris.catalog.Env;
import org.apache.doris.clone.LoadStatisticForTag;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.resource.Tag;
import org.apache.doris.system.Backend;
import org.apache.doris.thrift.TStorageMedium;

import com.google.common.collect.ImmutableList;

// show proc "/cluster_balance/cluster_load_stat/location_default/HDD";
public class ClusterLoadStatisticProcDir implements ProcDirInterface {
    public static final ImmutableList<String> TITLE_NAMES = new ImmutableList.Builder<String>()
            .add("BeId").add("Available").add("UsedCapacity").add("Capacity").add("MaxDisk")
            .add("UsedPercent").add("ReplicaNum").add("CapCoeff").add("ReplCoeff").add("Score")
            .add("Class")
            .build();

    private Tag tag;
    private TStorageMedium medium;

    public ClusterLoadStatisticProcDir(Tag tag, TStorageMedium medium) {
        this.tag = tag;
        this.medium = medium;
    }

    @Override
    public ProcResult fetchResult() throws AnalysisException {
        BaseProcResult result = new BaseProcResult();
        result.setNames(TITLE_NAMES);

        LoadStatisticForTag loadStatisticForTag = Env.getCurrentEnv()
                .getTabletScheduler().getStatisticMap().get(tag);
        if (loadStatisticForTag != null) {
            loadStatisticForTag.getStatistic(medium).forEach(result::addRow);
        }
        return result;
    }

    @Override
    public boolean register(String name, ProcNodeInterface node) {
        return false;
    }

    @Override
    public ProcNodeInterface lookup(String beIdStr) throws AnalysisException {
        long beId = -1L;
        try {
            beId = Long.valueOf(beIdStr);
        } catch (NumberFormatException e) {
            throw new AnalysisException("Invalid be id format: " + beIdStr);
        }

        Backend be = Env.getCurrentSystemInfo().getBackend(beId);
        if (be == null) {
            throw new AnalysisException("backend " + beId + " does not exist");
        }
        LoadStatisticForTag loadStatisticForTag = Env.getCurrentEnv()
                .getTabletScheduler().getStatisticMap().get(tag);
        return new BackendLoadStatisticProcNode(loadStatisticForTag, beId);
    }

}