| // 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.backup; |
| |
| import org.apache.doris.catalog.Table; |
| import org.apache.doris.common.io.Writable; |
| import org.apache.doris.meta.MetaContext; |
| |
| import com.google.common.collect.Maps; |
| |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.DataOutput; |
| import java.io.DataOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class BackupMeta implements Writable { |
| private static final Logger LOG = LogManager.getLogger(BackupMeta.class); |
| |
| // tbl name -> tbl |
| private Map<String, Table> tblNameMap = Maps.newHashMap(); |
| // tbl id -> tbl |
| private Map<Long, Table> tblIdMap = Maps.newHashMap(); |
| |
| private BackupMeta() { |
| |
| } |
| |
| public BackupMeta(List<Table> tables) { |
| for (Table table : tables) { |
| tblNameMap.put(table.getName(), table); |
| tblIdMap.put(table.getId(), table); |
| } |
| } |
| |
| public Map<String, Table> getTables() { |
| return tblNameMap; |
| } |
| |
| public Table getTable(String tblName) { |
| return tblNameMap.get(tblName); |
| } |
| |
| public Table getTable(Long tblId) { |
| return tblIdMap.get(tblId); |
| } |
| |
| public static BackupMeta fromFile(String filePath, int metaVersion) throws IOException { |
| File file = new File(filePath); |
| MetaContext metaContext = new MetaContext(); |
| metaContext.setMetaVersion(metaVersion); |
| metaContext.setThreadLocalInfo(); |
| try (DataInputStream dis = new DataInputStream(new FileInputStream(file))) { |
| BackupMeta backupMeta = BackupMeta.read(dis); |
| return backupMeta; |
| } finally { |
| MetaContext.remove(); |
| } |
| } |
| |
| public void writeToFile(File metaInfoFile) throws IOException { |
| DataOutputStream dos = new DataOutputStream(new FileOutputStream(metaInfoFile)); |
| try { |
| write(dos); |
| dos.flush(); |
| } finally { |
| dos.close(); |
| } |
| } |
| |
| public boolean compatibleWith(BackupMeta other) { |
| // TODO |
| return false; |
| } |
| |
| public static BackupMeta read(DataInput in) throws IOException { |
| BackupMeta backupMeta = new BackupMeta(); |
| backupMeta.readFields(in); |
| return backupMeta; |
| } |
| |
| @Override |
| public void write(DataOutput out) throws IOException { |
| out.writeInt(tblNameMap.size()); |
| for (Table table : tblNameMap.values()) { |
| table.write(out); |
| } |
| } |
| |
| public void readFields(DataInput in) throws IOException { |
| int size = in.readInt(); |
| for (int i = 0; i < size; i++) { |
| Table tbl = Table.read(in); |
| tblNameMap.put(tbl.getName(), tbl); |
| tblIdMap.put(tbl.getId(), tbl); |
| } |
| } |
| } |