minihippo commented on code in PR #5064: URL: https://github.com/apache/hudi/pull/5064#discussion_r1035455237
########## hudi-metaserver/src/main/java/org/apache/hudi/metaserver/store/RelationDBBasedStore.java: ########## @@ -0,0 +1,244 @@ +/* + * 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.hudi.metaserver.store; + +import org.apache.hudi.metaserver.store.bean.InstantBean; +import org.apache.hudi.metaserver.store.bean.TableBean; +import org.apache.hudi.metaserver.store.jdbc.WrapperDao; +import org.apache.hudi.metaserver.thrift.MetaStoreException; +import org.apache.hudi.metaserver.thrift.NoSuchObjectException; +import org.apache.hudi.metaserver.thrift.Table; +import org.apache.hudi.metaserver.thrift.THoodieInstant; +import org.apache.hudi.metaserver.thrift.TState; + +import java.io.Serializable; +import java.text.ParseException; +import java.text.SimpleDateFormat; +import java.util.Arrays; +import java.util.Date; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.stream.Collectors; + +/** + * Metadata store based on relation database. + */ +public class RelationDBBasedStore implements MetadataStore, Serializable { + + private final WrapperDao tableDao = new WrapperDao.TableDao(); + private final WrapperDao partitionDao = new WrapperDao.PartitionDao(); + private final WrapperDao timelineDao = new WrapperDao.TimelineDao(); + private final WrapperDao fileDao = new WrapperDao.FileDao(); + + @Override + public void initStore() throws MetaStoreException { + WrapperDao dao = new WrapperDao("DDLMapper"); + dao.updateBySql("createDBs", null); + dao.updateBySql("createTables", null); + dao.updateBySql("createTableParams", null); + dao.updateBySql("createPartitions", null); + dao.updateBySql("createTableTimestamp", null); + dao.updateBySql("createInstant", null); + dao.updateBySql("createInstantMeta", null); + dao.updateBySql("createFiles", null); + } + + @Override + public boolean createDatabase(String db) throws MetaStoreException { + Map<String, Object> params = new HashMap<>(); + params.put("databaseName", db); + return tableDao.insertBySql("insertDB", params) == 1; + } + + @Override + public Long getDatabaseId(String db) throws MetaStoreException { + List<Long> ids = tableDao.queryForListBySql("selectDBId", db); + assertIfNotSingle(ids, "db " + db); + return ids.isEmpty() ? null : ids.get(0); + } + + @Override + public boolean createTable(Long dbId, Table table) throws MetaStoreException { + Map<String, Object> params = new HashMap<>(); + params.put("dbId", dbId); + TableBean tableBean = new TableBean(table); + params.put("tableBean", tableBean); + return tableDao.insertBySql("insertTable", params) == 1; + } + + @Override + public Table getTable(String db, String tb) throws MetaStoreException, NoSuchObjectException { + Map<String, Object> params = new HashMap<>(); + params.put("databaseName", db); + params.put("tableName", tb); + List<TableBean> table = tableDao.queryForListBySql("selectTable", params); + assertIfNotSingle(table, "table " + db + "." + tb); + return table.isEmpty() ? null : table.get(0).toTable(); + } + + @Override + public Long getTableId(String db, String tb) throws MetaStoreException { + Map<String, Object> params = new HashMap<>(); + params.put("databaseName", db); + params.put("tableName", tb); + List<Long> ids = tableDao.queryForListBySql("selectTableId", params); + assertIfNotSingle(ids, "table " + db + "." + tb); + return ids.isEmpty() ? null : ids.get(0); + } + + @Override + public List<String> getAllPartitions(long tableId) throws MetaStoreException { + List<String> partitionNames = partitionDao.queryForListBySql("selectAllPartitions", tableId); + return partitionNames; + } + + @Override + public String createNewTimestamp(long tableId) throws MetaStoreException { + // todo: support SSS + SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss"); + String oldTimestamp; + String newTimestamp; + boolean success; + try { + do { + oldTimestamp = getLatestTimestamp(tableId); + newTimestamp = oldTimestamp == null + ? sdf.format(new Date()) + : sdf.format(Math.max(new Date().getTime(), sdf.parse(oldTimestamp).getTime() + 1000)); + Map<String, Object> params = new HashMap<>(); + params.put("tableId", tableId); + params.put("oldTimestamp", oldTimestamp); + params.put("newTimestamp", newTimestamp); + if (oldTimestamp == null) { + success = timelineDao.insertBySql("insertTimestamp", params) == 1; + } else { + success = timelineDao.updateBySql("updateTimestamp", params) == 1; + } + } while (!success); + } catch (ParseException e) { + throw new MetaStoreException("Fail to parse the timestamp, " + e.getMessage()); + } + return newTimestamp; + } + + private String getLatestTimestamp(long tableId) throws MetaStoreException { + List<String> timestamps = timelineDao.queryForListBySql("selectTimestampByTableId", tableId); + assertIfNotSingle(timestamps, "timestamp"); + return timestamps.isEmpty() ? null : timestamps.get(0); + } + + @Override + public boolean createInstant(long tableId, THoodieInstant instant) throws MetaStoreException { + InstantBean instantBean = new InstantBean(tableId, instant); + Map<String, Object> params = new HashMap<>(); + params.put("instant", instantBean); + // todo: support heartbeat + params.put("duration", 120); + params.put("startTs", (int) (System.currentTimeMillis() / 1000L)); + return timelineDao.insertBySql("insertInstant", params) == 1; + } + + @Override + public boolean updateInstant(long tableId, THoodieInstant fromInstant, THoodieInstant toInstant) throws MetaStoreException { + InstantBean oldInstant = new InstantBean(tableId, fromInstant); + InstantBean newInstant = new InstantBean(tableId, toInstant); + Map<String, Object> params = new HashMap<>(); + params.put("oldInstant", oldInstant); + params.put("newInstant", newInstant); + return timelineDao.updateBySql("updateInstant", params) == 1; + } + + @Override + public boolean deleteInstant(long tableId, THoodieInstant instant) throws MetaStoreException { + Map<String, Object> params = new HashMap<>(); + params.put("tableId", tableId); + params.put("ts", instant.getTimestamp()); + return timelineDao.deleteBySql("deleteInstant", params) == 1; + } + + @Override + public List<THoodieInstant> scanInstants(long tableId, List<TState> states, int limit) throws MetaStoreException { + if (states == null || states.isEmpty()) { + throw new MetaStoreException("State has to be specified when scan instants"); + } + Map<String, Object> params = new HashMap<>(); + params.put("tableId", tableId); + params.put("states", states.stream().mapToInt(TState::getValue).boxed().collect(Collectors.toList())); + params.put("limit", limit); + List<InstantBean> instantBeans = timelineDao.queryForListBySql("selectInstantsByStates", params); + return instantBeans.stream().map(InstantBean::toTHoodieInstant).collect(Collectors.toList()); + } + + @Override + public List<THoodieInstant> scanInstants(long tableId, TState state, int limit) throws MetaStoreException { + return scanInstants(tableId, Arrays.asList(state), limit); + } + + @Override + public boolean instantExists(long tableId, THoodieInstant instant) throws MetaStoreException { + InstantBean instantBean = new InstantBean(tableId, instant); + List<Long> ids = timelineDao.queryForListBySql("selectInstantId", instantBean); + assertIfNotSingle(ids, instantBean.toString()); + return !ids.isEmpty(); + } + + // todo: check correctness + @Override + public void saveInstantMeta(long tableId, THoodieInstant instant, byte[] metadata) throws MetaStoreException { + InstantBean instantBean = new InstantBean(tableId, instant); + Map<String, Object> params = new HashMap<>(); + params.put("instant", instantBean); + params.put("metadata", metadata); + // todo: array bytes to longblob + timelineDao.insertBySql("insertInstantMeta", params); + } + + @Override + public boolean deleteInstantMeta(long tableId, THoodieInstant instant) throws MetaStoreException { + InstantBean instantBean = new InstantBean(tableId, instant); + return timelineDao.deleteBySql("deleteInstantMeta", instantBean) == 1; + } + + @Override + public boolean deleteInstantAllMeta(long tableId, String timestamp) throws MetaStoreException { + Map<String, Object> params = new HashMap<>(); + params.put("tableId", tableId); + params.put("ts", timestamp); + return timelineDao.deleteBySql("deleteInstantAllMeta", params) >= 1; + } + + @Override + public byte[] getInstantMeta(long tableId, THoodieInstant instant) throws MetaStoreException { + InstantBean instantBean = new InstantBean(tableId, instant); + Map<String, Object> result = timelineDao.queryForObjectBySql("selectInstantMeta", instantBean); + return result == null ? null : (byte[]) result.get("data"); + } + + @Override + public void close() { + + } + + public static void assertIfNotSingle(List<?> list, String errMsg) throws MetaStoreException { Review Comment: fix -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
