ShowClusterStmt.java

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.analysis;

import org.apache.doris.analysis.CompoundPredicate.Operator;
import org.apache.doris.catalog.Column;
import org.apache.doris.catalog.Env;
import org.apache.doris.catalog.ScalarType;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.Config;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.mysql.privilege.PrivBitSet;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.mysql.privilege.Privilege;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.ShowResultSetMetaData;

import com.google.common.collect.ImmutableList;

public class ShowClusterStmt extends ShowStmt implements NotFallbackInParser {
    public static final ImmutableList<String> CLUSTER_TITLE_NAMES = new ImmutableList.Builder<String>()
            .add("cluster").add("is_current").add("users").add("backend_num").build();

    public static final ImmutableList<String> COMPUTE_GROUP_TITLE_NAMES = new ImmutableList.Builder<String>()
            .add("Name").add("IsCurrent").add("Users").add("BackendNum").build();

    boolean isComputeGroup = true;

    public ShowClusterStmt(boolean isComputeGroup) {
        this.isComputeGroup = isComputeGroup;
    }

    @Override
    public ShowResultSetMetaData getMetaData() {
        ShowResultSetMetaData.Builder builder = ShowResultSetMetaData.builder();

        ImmutableList<String> titleNames = null;
        if (isComputeGroup) {
            titleNames = COMPUTE_GROUP_TITLE_NAMES;
        } else {
            titleNames = CLUSTER_TITLE_NAMES;
        }

        for (String title : titleNames) {
            builder.addColumn(new Column(title, ScalarType.createVarchar(128)));
        }
        return builder.build();
    }

    @Override
    public SelectStmt toSelectStmt(Analyzer analyzer) throws AnalysisException {
        return null;
    }

    @Override
    public void analyze(Analyzer analyzer) throws AnalysisException {
        if (Config.isNotCloudMode()) {
            // just user admin
            if (!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get().getCurrentUserIdentity(),
                        PrivPredicate.of(PrivBitSet.of(Privilege.ADMIN_PRIV, Privilege.NODE_PRIV), Operator.OR))) {
                ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "ADMIN");
            }
        }
    }

    @Override
    public String toSql() {
        return super.toSql();
    }

}