dutyu commented on code in PR #27666: URL: https://github.com/apache/doris/pull/27666#discussion_r1446012476
########## fe/fe-core/src/main/java/org/apache/doris/datasource/MetaIdMappingsLog.java: ########## @@ -0,0 +1,239 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// 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 +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +package org.apache.doris.datasource; + +import org.apache.doris.common.io.Text; +import org.apache.doris.common.io.Writable; +import org.apache.doris.persist.gson.GsonUtils; + +import com.google.common.collect.Lists; +import com.google.gson.annotations.SerializedName; +import lombok.Data; +import lombok.Getter; + +import java.io.DataInput; +import java.io.DataOutput; +import java.io.IOException; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; + +@Data +public class MetaIdMappingsLog implements Writable { + + @SerializedName(value = "catalogId") + private long catalogId = -1L; + + @SerializedName(value = "fromHmsEvent") + private boolean fromHmsEvent = false; + + // The synced event id of master + @SerializedName(value = "lastSyncedEventId") + private long lastSyncedEventId = -1L; + + @SerializedName(value = "metaIdMappings") + private List<MetaIdMapping> metaIdMappings = Lists.newLinkedList(); + + public MetaIdMappingsLog() { + } + + @Override + public int hashCode() { + return Objects.hash(catalogId, lastSyncedEventId, + metaIdMappings == null ? 0 : Arrays.hashCode(metaIdMappings.toArray())); + } + + @Override + public boolean equals(Object obj) { + if (!(obj instanceof MetaIdMappingsLog)) { + return false; + } + return Objects.equals(this.catalogId, ((MetaIdMappingsLog) obj).catalogId) + && Objects.equals(this.fromHmsEvent, ((MetaIdMappingsLog) obj).fromHmsEvent) + && Objects.equals(this.lastSyncedEventId, ((MetaIdMappingsLog) obj).lastSyncedEventId) + && Objects.equals(this.metaIdMappings, ((MetaIdMappingsLog) obj).metaIdMappings); + } + + @Override + public void write(DataOutput out) throws IOException { + Text.writeString(out, GsonUtils.GSON.toJson(this)); + } + + public static MetaIdMappingsLog read(DataInput in) throws IOException { + String json = Text.readString(in); + return GsonUtils.GSON.fromJson(json, MetaIdMappingsLog.class); + } + + public void addFromCreateDatabaseEvent(String databaseName) { + MetaIdMapping mapping = new MetaIdMapping((short) 1, (short) 1, databaseName, null, null, + ExternalMetaIdMgr.nextMetaId()); + this.metaIdMappings.add(mapping); + } + + public void addFromCreateTableEvent(String dbName, String tableName) { + MetaIdMapping mapping = new MetaIdMapping((short) 1, (short) 2, dbName, tableName, null, + ExternalMetaIdMgr.nextMetaId()); + this.metaIdMappings.add(mapping); + } + + public void addFromAddPartitionEvent(String dbName, String tblName, String partitionName) { + MetaIdMapping mapping = new MetaIdMapping((short) 1, (short) 3, dbName, tblName, partitionName, + ExternalMetaIdMgr.nextMetaId()); + this.metaIdMappings.add(mapping); + } + + public void addFromDropDatabaseEvent(String dbName) { + MetaIdMapping mapping = new MetaIdMapping((short) 2, (short) 1, dbName, null, null, -1L); + this.metaIdMappings.add(mapping); + } + + public void addFromDropTableEvent(String dbName, String tblName) { + MetaIdMapping mapping = new MetaIdMapping((short) 2, (short) 2, dbName, tblName, null, -1L); + this.metaIdMappings.add(mapping); + } + + public void addFromDropPartitionEvent(String dbName, String tblName, String partitionName) { + MetaIdMapping mapping = new MetaIdMapping((short) 2, (short) 3, dbName, tblName, partitionName, -1L); + this.metaIdMappings.add(mapping); + } + + public static OperationType getOperationType(short opType) { + switch (opType) { + case 1: + return OperationType.ADD; + case 2: + return OperationType.DELETE; + default: + return OperationType.IGNORE; + } + } + + public static MetaObjectType getMetaObjectType(short metaObjType) { + switch (metaObjType) { + case 1: + return MetaObjectType.DATABASE; + case 2: + return MetaObjectType.TABLE; + case 3: + return MetaObjectType.PARTITION; + default: + return MetaObjectType.IGNORE; + } + } + + @Getter + public static class MetaIdMapping implements Writable { + + @SerializedName(value = "opType") + private short opType; + @SerializedName(value = "metaObjType") + private short metaObjType; + // name of Database + @SerializedName(value = "dbName") + private String dbName; + // name of Table + @SerializedName(value = "tblName") + private String tblName; + // name of Partition + @SerializedName(value = "partitionName") + private String partitionName; + // id of Database/Table/Partition + @SerializedName(value = "id") + private long id; + + public MetaIdMapping() {} + + private MetaIdMapping(short opType, + short metaObjType, + String dbName, + String tblName, + String partitionName, + long id) { + this.opType = opType; + this.metaObjType = metaObjType; + this.dbName = dbName; + this.tblName = tblName; + this.partitionName = partitionName; + this.id = id; + } + + @Override + public void write(DataOutput out) throws IOException { Review Comment: write / read not need means? -- This is an automated message from the Apache Git Service. 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