fe/src/main/java/org/apache/doris/system/HeartbeatFlags.java

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.system;

import org.apache.doris.analysis.SetType;
import org.apache.doris.analysis.SysVariableDesc;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.qe.SessionVariable;
import org.apache.doris.qe.VariableMgr;
import org.apache.doris.thrift.HeartbeatServiceConstants;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

// This class is to manage the control flag in heartbeat message between FE and BE.
// The control flag is for FE to control some behaviors of BE.
// Now the flag is represented by 64-bit long type, each bit can be used to control
// one behavior. The first bit is used for set default rowset type to beta flag.
public class HeartbeatFlags {
    private static final Logger LOG = LogManager.getLogger(HeartbeatFlags.class);

    public static boolean isValidRowsetType(String rowsetType) {
        return rowsetType.equalsIgnoreCase("alpha") || rowsetType.equalsIgnoreCase("beta");
    }

    public long getHeartbeatFlags () {
        long heartbeatFlags = 0;
        try {
            String defaultRowsetType = VariableMgr.getValue(null, new SysVariableDesc(SessionVariable.DEFAULT_ROWSET_TYPE, SetType.GLOBAL));
            if (defaultRowsetType.equalsIgnoreCase("beta")) {
                heartbeatFlags |= HeartbeatServiceConstants.IS_SET_DEFAULT_ROWSET_TO_BETA_BIT;
            }
        } catch (AnalysisException e) {
            LOG.warn("parse default rowset type failed.error:{}", e);
        }

        return heartbeatFlags;
    }
}