Jason918 commented on a change in pull request #12776: URL: https://github.com/apache/pulsar/pull/12776#discussion_r748815823
########## File path: pulsar-metadata/src/main/java/org/apache/pulsar/metadata/impl/RocksdbMetadataStore.java ########## @@ -0,0 +1,428 @@ +/** + * 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.pulsar.metadata.impl; + +import com.google.common.annotations.VisibleForTesting; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.charset.StandardCharsets; +import java.nio.file.FileSystems; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.ArrayList; +import java.util.Comparator; +import java.util.EnumSet; +import java.util.HashSet; +import java.util.List; +import java.util.Optional; +import java.util.Set; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicLong; +import lombok.AllArgsConstructor; +import lombok.Data; +import lombok.NoArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.apache.pulsar.common.util.FutureUtil; +import org.apache.pulsar.metadata.api.GetResult; +import org.apache.pulsar.metadata.api.MetadataStoreConfig; +import org.apache.pulsar.metadata.api.MetadataStoreException; +import org.apache.pulsar.metadata.api.Notification; +import org.apache.pulsar.metadata.api.NotificationType; +import org.apache.pulsar.metadata.api.Stat; +import org.apache.pulsar.metadata.api.extended.CreateOption; +import org.rocksdb.InfoLogLevel; +import org.rocksdb.Options; +import org.rocksdb.ReadOptions; +import org.rocksdb.RocksDB; +import org.rocksdb.RocksDBException; +import org.rocksdb.RocksIterator; +import org.rocksdb.Transaction; +import org.rocksdb.TransactionDB; +import org.rocksdb.TransactionDBOptions; +import org.rocksdb.WriteBatch; +import org.rocksdb.WriteOptions; + +/** + * + */ +@Slf4j +public class RocksdbMetadataStore extends AbstractMetadataStore { + private static final byte[] SEQUENTIAL_ID_KEY = toBytes("__metadata_sequentialId_key"); + private static final byte[] INSTANCE_ID_KEY = toBytes("__metadata_instanceId_key"); + + private final long instanceId; + private final AtomicLong sequentialIdGenerator; + + private final TransactionDB db; + + private final WriteOptions optionSync; + private final WriteOptions optionDontSync; + + private final ReadOptions optionCache; + private final ReadOptions optionDontCache; + + private final WriteBatch emptyBatch; + + @Data + @AllArgsConstructor + @NoArgsConstructor + private static class MetaValue { + private static final int HEADER_SIZE = 8 + 8 + 8 + 8 + 1; + + long version; + long owner; + long createdTimestamp; + long modifiedTimestamp; + boolean ephemeral; + byte[] data; + + public byte[] serialize() { + byte[] result = new byte[HEADER_SIZE + data.length]; + ByteBuffer buffer = ByteBuffer.wrap(result); + buffer.putLong(version); + buffer.putLong(owner); + buffer.putLong(createdTimestamp); + buffer.putLong(modifiedTimestamp); + buffer.put((byte) (ephemeral ? 1 : 0)); + buffer.put(data); + return result; + } + + public static MetaValue parse(byte[] dataBytes) throws MetadataStoreException { + if (dataBytes == null) { + return null; + } + if (dataBytes.length < HEADER_SIZE) { + throw new MetadataStoreException("Invalid MetaValue data"); + } + ByteBuffer buffer = ByteBuffer.wrap(dataBytes); + MetaValue metaValue = new MetaValue(); + metaValue.version = buffer.getLong(); + metaValue.owner = buffer.getLong(); + metaValue.createdTimestamp = buffer.getLong(); + metaValue.modifiedTimestamp = buffer.getLong(); + metaValue.ephemeral = buffer.get() > 0; + metaValue.data = new byte[buffer.remaining()]; + buffer.get(metaValue.data); + return metaValue; + } + } + + @VisibleForTesting + static byte[] toBytes(String s) { + return s.getBytes(StandardCharsets.UTF_8); + } + + @VisibleForTesting + static String toString(byte[] bytes) { + return new String(bytes, StandardCharsets.UTF_8); + } + + @VisibleForTesting + static byte[] toBytes(long value) { + return ByteBuffer.wrap(new byte[8]).putLong(value).array(); + } + + @VisibleForTesting + static long toLong(byte[] bytes) { + return ByteBuffer.wrap(bytes).getLong(); + } + + /** + * @param metadataURL format "rocksdb://{storePath}" + * @param metadataStoreConfig + * @throws MetadataStoreException + */ + public RocksdbMetadataStore(String metadataURL, MetadataStoreConfig metadataStoreConfig) + throws MetadataStoreException { + try { + RocksDB.loadLibrary(); + } catch (Throwable t) { + throw new MetadataStoreException("Failed to load RocksDB JNI library", t); + } + + this.optionSync = new WriteOptions(); + this.optionDontSync = new WriteOptions(); + this.optionCache = new ReadOptions(); + this.optionDontCache = new ReadOptions(); + this.emptyBatch = new WriteBatch(); + + try (Options options = new Options()) { + options.setCreateIfMissing(true); + + String dataDir = metadataURL.substring("rocksdb://".length()); + Path dataPath = FileSystems.getDefault().getPath(dataDir); + Files.createDirectories(dataPath); + configLog(options); + TransactionDBOptions transactionDBOptions = new TransactionDBOptions(); + db = TransactionDB.open(options, transactionDBOptions, dataPath.toString()); + + sequentialIdGenerator = new AtomicLong(0); + byte[] value = db.get(SEQUENTIAL_ID_KEY); + if (value != null) { + sequentialIdGenerator.set(toLong(value)); + } else { + db.put(INSTANCE_ID_KEY, toBytes(sequentialIdGenerator.get())); + } + + value = db.get(INSTANCE_ID_KEY); + if (value != null) { + instanceId = toLong(value) + 1; + } else { + instanceId = 0; + } + db.put(INSTANCE_ID_KEY, toBytes(instanceId)); + + + } catch (RocksDBException e) { + throw new MetadataStoreException("Error open RocksDB database", e); + } catch (MetadataStoreException e) { + throw e; + } catch (Throwable t) { + throw new MetadataStoreException(t); + } + + optionSync.setSync(true); + optionDontSync.setSync(false); + + optionCache.setFillCache(true); + optionDontCache.setFillCache(false); + } + + private void configLog(Options options) throws IOException { + // Configure file path + String logPath = System.getProperty("pulsar.log.dir", ""); + Path logPathSetting; + if (!logPath.isEmpty()) { + logPathSetting = FileSystems.getDefault().getPath(logPath + "/rocksdb-log"); + Files.createDirectories(logPathSetting); + options.setDbLogDir(logPathSetting.toString()); + } + + // Configure log level + String logLevel = System.getProperty("pulsar.log.level", "info"); + switch (logLevel) { + case "debug": + options.setInfoLogLevel(InfoLogLevel.DEBUG_LEVEL); + break; + case "info": + options.setInfoLogLevel(InfoLogLevel.INFO_LEVEL); + break; + case "warn": + options.setInfoLogLevel(InfoLogLevel.WARN_LEVEL); + break; + case "error": + options.setInfoLogLevel(InfoLogLevel.ERROR_LEVEL); + break; + default: + log.warn("Unrecognized RockDB log level: {}", logLevel); + } + + // Keep log files for 1month + options.setKeepLogFileNum(30); + options.setLogFileTimeToRoll(TimeUnit.DAYS.toSeconds(1)); + } + + @Override + public void close() throws Exception { + db.close(); + optionSync.close(); + optionDontSync.close(); + optionCache.close(); + optionDontCache.close(); + emptyBatch.close(); + super.close(); + } + + @Override + public CompletableFuture<Optional<GetResult>> get(String path) { + if (path.isEmpty()) { Review comment: 1. Added 'storeGet' in AbstractMetadataStore. 2. Moved 'put' to AbstractMetadataStore, as it's the same in all implementations. 3. Now, each metadata store implements just implement the 'storeXXX' version methods. -- 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]
