fe/src/main/java/org/apache/doris/task/SchemaChangeTask.java

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// 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
//
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package org.apache.doris.task;

import org.apache.doris.catalog.Column;
import org.apache.doris.thrift.TAlterTabletReq;
import org.apache.doris.thrift.TColumn;
import org.apache.doris.thrift.TCreateTabletReq;
import org.apache.doris.thrift.TKeysType;
import org.apache.doris.thrift.TResourceInfo;
import org.apache.doris.thrift.TStorageType;
import org.apache.doris.thrift.TTabletSchema;
import org.apache.doris.thrift.TTaskType;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

public class SchemaChangeTask extends AgentTask {

    private long baseReplicaId;
    private int baseSchemaHash;
    private TStorageType storageType;
    private TKeysType keysType;

    private int newSchemaHash;
    private short newShortKeyColumnCount;
    private List<Column> newColumns;

    // bloom filter columns
    private Set<String> bfColumns;
    private double bfFpp;

    public SchemaChangeTask(TResourceInfo resourceInfo, long backendId, long dbId, long tableId,
                            long partitionId, long indexId, long baseTabletId, long baseReplicaId,
                            List<Column> newColumns, int newSchemaHash, int baseSchemaHash,
                            short newShortKeyColumnCount, TStorageType storageType,
                            Set<String> bfColumns, double bfFpp, TKeysType keysType) {
        super(resourceInfo, backendId, TTaskType.SCHEMA_CHANGE, dbId, tableId, partitionId, indexId, baseTabletId);

        this.baseReplicaId = baseReplicaId;
        this.baseSchemaHash = baseSchemaHash;
        this.storageType = storageType;
        this.keysType = keysType;

        this.newSchemaHash = newSchemaHash;
        this.newShortKeyColumnCount = newShortKeyColumnCount;
        this.newColumns = newColumns;

        this.bfColumns = bfColumns;
        this.bfFpp = bfFpp;
    }

    public TAlterTabletReq toThrift() {
        TAlterTabletReq tAlterTabletReq = new TAlterTabletReq();

        tAlterTabletReq.setBase_tablet_id(tabletId);
        tAlterTabletReq.setBase_schema_hash(baseSchemaHash);

        // make 1 TCreateTableReq
        TCreateTabletReq createTabletReq = new TCreateTabletReq();
        createTabletReq.setTablet_id(tabletId);

        // no need to set version
        // schema
        TTabletSchema tSchema = new TTabletSchema();
        tSchema.setShort_key_column_count(newShortKeyColumnCount);
        tSchema.setSchema_hash(newSchemaHash);
        tSchema.setStorage_type(storageType);
        tSchema.setKeys_type(keysType);

        List<TColumn> tColumns = new ArrayList<TColumn>();
        for (Column column : newColumns) {
            TColumn tColumn = column.toThrift();
            // is bloom filter column
            if (bfColumns != null && bfColumns.contains(column.getName())) {
                tColumn.setIs_bloom_filter_column(true);
            }
            tColumns.add(tColumn);
        }
        tSchema.setColumns(tColumns);

        if (bfColumns != null) {
            tSchema.setBloom_filter_fpp(bfFpp);
        }
        createTabletReq.setTablet_schema(tSchema);
        createTabletReq.setTable_id(tableId);
        createTabletReq.setPartition_id(partitionId);

        tAlterTabletReq.setNew_tablet_req(createTabletReq);

        return tAlterTabletReq;
    }

    public long getReplicaId() {
        return baseReplicaId;
    }

    public int getSchemaHash() {
        return newSchemaHash;
    }

    public int getBaseSchemaHash() {
        return baseSchemaHash;
    }

    public short getNewShortKeyColumnCount() {
        return newShortKeyColumnCount;
    }

    public TStorageType getStorageType() {
        return storageType;
    }

    public List<Column> getColumns() {
        return newColumns;
    }

}