BatchAlterJobPersistInfo.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
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.alter;

import org.apache.doris.catalog.Env;
import org.apache.doris.common.FeMetaVersion;
import org.apache.doris.common.io.Text;
import org.apache.doris.common.io.Writable;
import org.apache.doris.persist.gson.GsonUtils;

import com.google.gson.annotations.SerializedName;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 *
 * used for batch log AlterJob to editLog in one atomic operation
 *
 */
public class BatchAlterJobPersistInfo implements Writable {

    @SerializedName("l")
    private List<AlterJobV2> alterJobV2List;

    public BatchAlterJobPersistInfo(List<AlterJobV2> alterJobV2List) {
        this.alterJobV2List = alterJobV2List;
    }

    @Override
    public void write(DataOutput out) throws IOException {
        Text.writeString(out, GsonUtils.GSON.toJson(this));
    }

    public static BatchAlterJobPersistInfo read(DataInput in) throws IOException {
        if (Env.getCurrentEnvJournalVersion() < FeMetaVersion.VERSION_135) {
            int size = in.readInt();
            List<AlterJobV2> alterJobV2List = new ArrayList<>();
            for (int i = 0; i < size; i++) {
                alterJobV2List.add(AlterJobV2.read(in));
            }
            return new BatchAlterJobPersistInfo(alterJobV2List);
        } else {
            return GsonUtils.GSON.fromJson(Text.readString(in), BatchAlterJobPersistInfo.class);
        }
    }

    public List<AlterJobV2> getAlterJobV2List() {
        return alterJobV2List;
    }
}