CancelBackupCommand.java

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// or more contributor license agreements.  See the NOTICE file
// 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,
// software distributed under the License is distributed on an
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.nereids.trees.plans.commands;

import org.apache.doris.analysis.StmtType;
import org.apache.doris.catalog.Env;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.datasource.InternalCatalog;
import org.apache.doris.mysql.privilege.PrivPredicate;
import org.apache.doris.nereids.trees.plans.PlanType;
import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor;
import org.apache.doris.qe.ConnectContext;
import org.apache.doris.qe.StmtExecutor;

import com.google.common.base.Strings;

/**
 * CancelBackupCommand
 */
public class CancelBackupCommand extends CancelCommand {
    private String dbName;
    private boolean isRestore;
    private String label;      // Label filter (null means cancel all)
    private boolean isLike;    // Whether to use LIKE pattern matching

    // Old constructor for backward compatibility
    public CancelBackupCommand(String dbName, boolean isRestore) {
        this(dbName, isRestore, null, false);
    }

    // New constructor with label filter support
    public CancelBackupCommand(String dbName, boolean isRestore, String label, boolean isLike) {
        super(PlanType.CANCEL_BACKUP_AND_RESTORE_COMMAND);
        this.dbName = dbName;
        this.isRestore = isRestore;
        this.label = label;
        this.isLike = isLike;
    }

    public String getDbName() {
        return dbName;
    }

    public boolean isRestore() {
        return isRestore;
    }

    public String getLabel() {
        return label;
    }

    public boolean isLike() {
        return isLike;
    }

    /**
     * Check if a job label matches the filter
     * @param jobLabel The label of the job to check
     * @return true if the job label matches the filter, false otherwise
     */
    public boolean matchesLabel(String jobLabel) {
        if (label == null) {
            return true;
        }

        if (isLike) {
            StringBuilder regex = new StringBuilder();
            for (int i = 0; i < label.length(); i++) {
                char c = label.charAt(i);
                if (c == '%') {
                    regex.append(".*");
                } else if (c == '_') {
                    regex.append(".");
                } else if ("\\[]{}()*+?.^$|".indexOf(c) >= 0) {
                    regex.append('\\');
                    regex.append(c);
                } else {
                    regex.append(c);
                }
            }
            return jobLabel.matches(regex.toString());
        } else {
            return jobLabel.equals(label);
        }
    }

    @Override
    public void run(ConnectContext ctx, StmtExecutor executor) throws Exception {
        validate(ctx);
        ctx.getEnv().cancelBackup(this);
    }

    /**
     * validate
     */
    public void validate(ConnectContext ctx) throws AnalysisException {
        if (Strings.isNullOrEmpty(dbName)) {
            dbName = ctx.getDatabase();
            if (Strings.isNullOrEmpty(dbName)) {
                throw new AnalysisException("No database selected");
            }
        }

        // check auth
        if (!Env.getCurrentEnv().getAccessManager()
                .checkDbPriv(ConnectContext.get(), InternalCatalog.INTERNAL_CATALOG_NAME, dbName, PrivPredicate.LOAD)) {
            ErrorReport.reportAnalysisException(ErrorCode.ERR_SPECIFIC_ACCESS_DENIED_ERROR, "LOAD");
        }
    }

    @Override
    public <R, C> R accept(PlanVisitor<R, C> visitor, C context) {
        return visitor.visitCancelBackupCommand(this, context);
    }

    public StmtType stmtType() {
        return StmtType.CANCEL;
    }
}