ShowPolicyStmt.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.catalog.Env;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.common.UserException;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.policy.PolicyTypeEnum;
import org.apache.doris.policy.RowPolicy;
import org.apache.doris.policy.StoragePolicy;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.ShowResultSetMetaData;

import lombok.Getter;
import org.apache.commons.lang3.StringUtils;

/**
 * Show policy statement
 * syntax:
 * SHOW ROW POLICY [FOR user｜ROLE role]
 **/
public class ShowPolicyStmt extends ShowStmt implements NotFallbackInParser {

    @Getter
    private final PolicyTypeEnum type;

    @Getter
    private final UserIdentity user;

    @Getter
    private final String roleName;

    public ShowPolicyStmt(PolicyTypeEnum type, UserIdentity user, String roleName) {
        this.type = type;
        this.user = user;
        this.roleName = roleName;
    }

    @Override
    public void analyze(Analyzer analyzer) throws UserException {
        super.analyze(analyzer);
        if (user != null) {
            user.analyze();
        }
        // check auth
        if (!Env.getCurrentEnv().getAccessManager().checkGlobalPriv(ConnectContext.get(), PrivPredicate.ADMIN)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "ADMIN");
        }
    }

    @Override
    public String toSql() {
        StringBuilder sb = new StringBuilder();
        sb.append("SHOW ").append(type).append(" POLICY");
        switch (type) {
            case STORAGE:
                break;
            case ROW:
            default:
                if (user != null) {
                    sb.append(" FOR ").append(user);
                }
                if (!StringUtils.isEmpty(roleName)) {
                    sb.append(" FOR ROLE ").append(roleName);
                }
        }
        return sb.toString();
    }

    @Override
    public ShowResultSetMetaData getMetaData() {
        switch (type) {
            case STORAGE:
                return StoragePolicy.STORAGE_META_DATA;
            case ROW:
            default:
                return RowPolicy.ROW_META_DATA;
        }
    }
}