PauseRoutineLoadCommand.java

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

import org.apache.doris.analysis.StmtType;
import org.apache.doris.common.AnalysisException;
import org.apache.doris.common.ErrorCode;
import org.apache.doris.common.ErrorReport;
import org.apache.doris.nereids.trees.plans.PlanType;
import org.apache.doris.nereids.trees.plans.commands.Command;
import org.apache.doris.nereids.trees.plans.commands.ForwardWithSync;
import org.apache.doris.nereids.trees.plans.commands.info.LabelNameInfo;
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;

/**
  Pause routine load by name

  syntax:
      PAUSE ROUTINE LOAD [database.]name
 */
public class PauseRoutineLoadCommand extends Command implements ForwardWithSync {
    private final LabelNameInfo labelNameInfo;
    private final boolean isAll;
    private String db;

    public PauseRoutineLoadCommand(LabelNameInfo labelNameInfo) {
        super(PlanType.PAUSE_ROUTINE_LOAD_COMMAND);
        this.labelNameInfo = labelNameInfo;
        this.isAll = false;
    }

    public PauseRoutineLoadCommand() {
        super(PlanType.PAUSE_ALL_ROUTINE_COMMAND);
        this.labelNameInfo = null;
        this.isAll = true;
    }

    public String getLabel() {
        return labelNameInfo.getLabel();
    }

    public boolean isAll() {
        return isAll;
    }

    public String getDbFullName() {
        return db;
    }

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

    /**
     * validate
     */
    public void validate(ConnectContext ctx) throws AnalysisException {
        if (labelNameInfo != null) {
            labelNameInfo.validate(ctx);
            db = labelNameInfo.getDb();
        } else {
            if (Strings.isNullOrEmpty(ctx.getDatabase())) {
                ErrorReport.reportAnalysisException(ErrorCode.ERR_NO_DB_ERROR);
            }
            db = ctx.getDatabase();
        }
    }

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

    @Override
    public StmtType stmtType() {
        return StmtType.PAUSE;
    }
}