SchedulerWorkingSlotsProcDir.java

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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
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package org.apache.doris.common.proc;

import org.apache.doris.catalog.Env;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.system.Backend;

import com.google.common.base.Strings;
import com.google.common.collect.ImmutableList;

import java.util.List;

public class SchedulerWorkingSlotsProcDir implements ProcDirInterface {
    public static final ImmutableList<String> TITLE_NAMES = new ImmutableList.Builder<String>()
            .add("BeId").add("PathHash").add("AvailSlots").add("TotalSlots")
            .add("BalanceSlot").add("AvgRate").build();

    @Override
    public ProcResult fetchResult() throws AnalysisException {
        BaseProcResult result = new BaseProcResult();
        result.setNames(TITLE_NAMES);
        List<List<String>> infos = Env.getCurrentEnv().getTabletScheduler().getSlotsInfo();
        result.setRows(infos);
        return result;
    }

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

    @Override
    public ProcNodeInterface lookup(String beIdStr) throws AnalysisException {
        if (Strings.isNullOrEmpty(beIdStr)) {
            throw new AnalysisException("Backend id is null");
        }

        long backendId = -1L;
        try {
            backendId = Long.valueOf(beIdStr);
        } catch (NumberFormatException e) {
            throw new AnalysisException("Invalid backend id format: " + beIdStr);
        }

        Backend backend = Env.getCurrentSystemInfo().getBackend(backendId);
        if (backend == null) {
            throw new AnalysisException("Backend[" + backendId + "] does not exist.");
        }

        return new BackendProcNode(backend);
    }

}