833 lines
28 KiB
Java
833 lines
28 KiB
Java
package it.cavallium.dbengine.database.disk;
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import static io.netty5.buffer.api.StandardAllocationTypes.OFF_HEAP;
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import static it.cavallium.dbengine.database.LLUtils.MARKER_ROCKSDB;
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import io.micrometer.core.instrument.MeterRegistry;
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import io.micrometer.core.instrument.Tag;
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import io.micrometer.core.instrument.Timer;
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import io.netty5.buffer.api.BufferAllocator;
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import io.netty5.util.internal.PlatformDependent;
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import it.cavallium.dbengine.client.MemoryStats;
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import it.cavallium.dbengine.database.ColumnUtils;
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import it.cavallium.dbengine.database.LLKeyValueDatabase;
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import it.cavallium.dbengine.database.LLSnapshot;
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import it.cavallium.dbengine.database.LLUtils;
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import it.cavallium.dbengine.database.UpdateMode;
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import it.cavallium.dbengine.rpc.current.data.Column;
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import it.cavallium.dbengine.rpc.current.data.DatabaseLevel;
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import it.cavallium.dbengine.rpc.current.data.DatabaseOptions;
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import it.cavallium.dbengine.rpc.current.data.DatabaseVolume;
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import java.io.File;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.file.attribute.BasicFileAttributes;
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import java.time.Duration;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ThreadLocalRandom;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicLong;
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import org.apache.commons.lang3.time.StopWatch;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.jetbrains.annotations.Nullable;
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import org.rocksdb.BlockBasedTableConfig;
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import org.rocksdb.BloomFilter;
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import org.rocksdb.Cache;
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import org.rocksdb.ChecksumType;
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import org.rocksdb.ClockCache;
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import org.rocksdb.ColumnFamilyDescriptor;
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import org.rocksdb.ColumnFamilyHandle;
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import org.rocksdb.ColumnFamilyOptions;
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import org.rocksdb.CompactRangeOptions;
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import org.rocksdb.CompactionPriority;
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import org.rocksdb.CompressionOptions;
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import org.rocksdb.CompressionType;
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import org.rocksdb.DBOptions;
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import org.rocksdb.DbPath;
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import org.rocksdb.FlushOptions;
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import org.rocksdb.IndexType;
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import org.rocksdb.InfoLogLevel;
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import org.rocksdb.OptimisticTransactionDB;
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import org.rocksdb.RocksDB;
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import org.rocksdb.RocksDBException;
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import org.rocksdb.Snapshot;
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import org.rocksdb.TransactionDB;
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import org.rocksdb.TransactionDBOptions;
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import org.rocksdb.TxnDBWritePolicy;
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import org.rocksdb.WALRecoveryMode;
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import org.rocksdb.WriteBufferManager;
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import org.rocksdb.util.SizeUnit;
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import reactor.core.publisher.Mono;
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import reactor.core.scheduler.Scheduler;
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import reactor.core.scheduler.Schedulers;
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public class LLLocalKeyValueDatabase implements LLKeyValueDatabase {
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private static final boolean DELETE_LOG_FILES = false;
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static {
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RocksDB.loadLibrary();
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LLUtils.initHooks();
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}
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protected static final Logger logger = LogManager.getLogger(LLLocalKeyValueDatabase.class);
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private static final ColumnFamilyDescriptor DEFAULT_COLUMN_FAMILY
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= new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY);
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private final BufferAllocator allocator;
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private final MeterRegistry meterRegistry;
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private final Scheduler dbScheduler;
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private final Timer snapshotTime;
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// Configurations
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private final Path dbPath;
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private final String name;
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private final DatabaseOptions databaseOptions;
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private final boolean nettyDirect;
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private final boolean enableColumnsBug;
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private RocksDB db;
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private final Map<Column, ColumnFamilyHandle> handles;
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private final ConcurrentHashMap<Long, Snapshot> snapshotsHandles = new ConcurrentHashMap<>();
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private final AtomicLong nextSnapshotNumbers = new AtomicLong(1);
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private volatile boolean closed = false;
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@SuppressWarnings("SwitchStatementWithTooFewBranches")
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public LLLocalKeyValueDatabase(BufferAllocator allocator,
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MeterRegistry meterRegistry,
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String name,
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boolean inMemory,
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@Nullable Path path,
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List<Column> columns,
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List<ColumnFamilyHandle> handles,
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DatabaseOptions databaseOptions) throws IOException {
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this.name = name;
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this.allocator = allocator;
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this.nettyDirect = databaseOptions.allowNettyDirect() && allocator.getAllocationType() == OFF_HEAP;
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this.meterRegistry = meterRegistry;
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this.snapshotTime = Timer
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.builder("db.snapshot.timer")
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.publishPercentiles(0.2, 0.5, 0.95)
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.publishPercentileHistogram()
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.tags("db.name", name)
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.register(meterRegistry);
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if (nettyDirect) {
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if (!PlatformDependent.hasUnsafe()) {
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throw new UnsupportedOperationException("Please enable unsafe support or disable netty direct buffers",
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PlatformDependent.getUnsafeUnavailabilityCause()
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);
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}
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}
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OptionsWithCache optionsWithCache = openRocksDb(path, databaseOptions);
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var rocksdbOptions = optionsWithCache.options();
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try {
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List<ColumnFamilyDescriptor> descriptors = new ArrayList<>();
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descriptors.add(new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY));
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for (Column column : columns) {
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var columnOptions = new ColumnFamilyOptions();
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columnOptions.setMaxBytesForLevelBase(256 * SizeUnit.MB);
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columnOptions.setMaxBytesForLevelMultiplier(10);
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columnOptions.setLevelCompactionDynamicLevelBytes(true);
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columnOptions.setLevel0FileNumCompactionTrigger(2);
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columnOptions.setLevel0SlowdownWritesTrigger(20);
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columnOptions.setLevel0StopWritesTrigger(36);
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//noinspection ConstantConditions
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if (databaseOptions.memtableMemoryBudgetBytes() != null) {
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// 16MiB/256MiB of ram will be used for level style compaction
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columnOptions.optimizeLevelStyleCompaction(databaseOptions
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.memtableMemoryBudgetBytes()
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.orElse(databaseOptions.lowMemory() ? 16L * SizeUnit.MB : 128L * SizeUnit.MB));
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}
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if (!databaseOptions.levels().isEmpty()) {
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var firstLevelOptions = getRocksLevelOptions(databaseOptions.levels().get(0));
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columnOptions.setCompressionType(firstLevelOptions.compressionType);
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columnOptions.setCompressionOptions(firstLevelOptions.compressionOptions);
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var lastLevelOptions = getRocksLevelOptions(databaseOptions
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.levels()
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.get(databaseOptions.levels().size() - 1));
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columnOptions.setBottommostCompressionType(lastLevelOptions.compressionType);
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columnOptions.setBottommostCompressionOptions(lastLevelOptions.compressionOptions);
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columnOptions.setCompressionPerLevel(databaseOptions
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.levels()
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.stream()
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.map(v -> v.compression().getType())
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.toList());
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} else {
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columnOptions.setNumLevels(7);
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List<CompressionType> compressionTypes = new ArrayList<>(7);
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for (int i = 0; i < 7; i++) {
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if (i < 2) {
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compressionTypes.add(CompressionType.NO_COMPRESSION);
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} else {
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compressionTypes.add(CompressionType.LZ4_COMPRESSION);
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}
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}
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columnOptions.setBottommostCompressionType(CompressionType.LZ4_COMPRESSION);
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columnOptions.setBottommostCompressionOptions(new CompressionOptions()
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.setEnabled(true)
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.setMaxDictBytes(32768));
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columnOptions.setCompressionPerLevel(compressionTypes);
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}
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final BlockBasedTableConfig tableOptions = new BlockBasedTableConfig();
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if (!databaseOptions.lowMemory()) {
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final BloomFilter bloomFilter = new BloomFilter(3, false);
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tableOptions.setFilterPolicy(bloomFilter);
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tableOptions.setOptimizeFiltersForMemory(true);
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}
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tableOptions
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.setPinTopLevelIndexAndFilter(true)
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.setPinL0FilterAndIndexBlocksInCache(true)
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.setCacheIndexAndFilterBlocksWithHighPriority(true)
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.setCacheIndexAndFilterBlocks(databaseOptions.setCacheIndexAndFilterBlocks().orElse(true))
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.setPartitionFilters(true)
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.setIndexType(IndexType.kTwoLevelIndexSearch)
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.setFormatVersion(5)
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.setChecksumType(ChecksumType.kxxHash)
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.setBlockCacheCompressed(optionsWithCache.compressedCache())
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.setBlockCache(optionsWithCache.standardCache())
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.setBlockSize(512 * 1024); // 512KiB
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//columnOptions.setLevelCompactionDynamicLevelBytes(true);
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columnOptions.setTableFormatConfig(tableOptions);
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columnOptions.setCompactionPriority(CompactionPriority.OldestSmallestSeqFirst);
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descriptors.add(new ColumnFamilyDescriptor(column.name().getBytes(StandardCharsets.US_ASCII), columnOptions));
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}
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// Get databases directory path
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Objects.requireNonNull(path);
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Path databasesDirPath = path.toAbsolutePath().getParent();
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String dbPathString = databasesDirPath.toString() + File.separatorChar + path.getFileName();
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Path dbPath = Paths.get(dbPathString);
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this.dbPath = dbPath;
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// Set options
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this.databaseOptions = databaseOptions;
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int threadCap;
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if (databaseOptions.lowMemory()) {
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threadCap = Math.max(1, Runtime.getRuntime().availableProcessors());
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this.dbScheduler = Schedulers.boundedElastic();
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} else {
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// 8 or more
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threadCap = Math.max(8, Math.max(Runtime.getRuntime().availableProcessors(),
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Integer.parseInt(System.getProperty("it.cavallium.dbengine.scheduler.threads", "0"))));
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if (Boolean.parseBoolean(System.getProperty("it.cavallium.dbengine.scheduler.shared", "true"))) {
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this.dbScheduler = Schedulers.boundedElastic();
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} else {
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this.dbScheduler = Schedulers.newBoundedElastic(threadCap,
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Schedulers.DEFAULT_BOUNDED_ELASTIC_QUEUESIZE,
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"db-" + name,
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60,
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true
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);
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}
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}
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this.enableColumnsBug = "true".equals(databaseOptions.extraFlags().getOrDefault("enableColumnBug", "false"));
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createIfNotExists(descriptors, rocksdbOptions, inMemory, dbPath, dbPathString);
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while (true) {
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try {
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// a factory method that returns a RocksDB instance
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if (databaseOptions.optimistic()) {
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this.db = OptimisticTransactionDB.open(rocksdbOptions, dbPathString, descriptors, handles);
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} else {
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this.db = TransactionDB.open(rocksdbOptions,
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new TransactionDBOptions()
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.setWritePolicy(TxnDBWritePolicy.WRITE_COMMITTED)
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.setTransactionLockTimeout(5000)
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.setDefaultLockTimeout(5000),
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dbPathString,
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descriptors,
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handles
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);
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}
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break;
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} catch (RocksDBException ex) {
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switch (ex.getMessage()) {
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case "Direct I/O is not supported by the specified DB." -> {
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logger.warn(ex.getLocalizedMessage());
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rocksdbOptions
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.setUseDirectReads(false)
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.setUseDirectIoForFlushAndCompaction(false)
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.setAllowMmapReads(databaseOptions.allowMemoryMapping())
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.setAllowMmapWrites(databaseOptions.allowMemoryMapping());
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}
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default -> throw ex;
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}
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}
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}
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this.handles = new HashMap<>();
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if (enableColumnsBug && !inMemory) {
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for (int i = 0; i < columns.size(); i++) {
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this.handles.put(columns.get(i), handles.get(i));
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}
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} else {
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handles: for (ColumnFamilyHandle handle : handles) {
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for (Column column : columns) {
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if (Arrays.equals(column.name().getBytes(StandardCharsets.US_ASCII), handle.getName())) {
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this.handles.put(column, handle);
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continue handles;
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}
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}
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}
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}
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// compactDb(db, handles);
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flushDb(db, handles);
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} catch (RocksDBException ex) {
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throw new IOException(ex);
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}
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registerGauge(meterRegistry, name, "rocksdb.estimate-table-readers-mem");
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registerGauge(meterRegistry, name, "rocksdb.size-all-mem-tables");
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registerGauge(meterRegistry, name, "rocksdb.cur-size-all-mem-tables");
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registerGauge(meterRegistry, name, "rocksdb.estimate-num-keys");
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registerGauge(meterRegistry, name, "rocksdb.block-cache-usage");
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registerGauge(meterRegistry, name, "rocksdb.block-cache-pinned-usage");
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}
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public Map<Column, ColumnFamilyHandle> getAllColumnFamilyHandles() {
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return this.handles;
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}
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private record RocksLevelOptions(CompressionType compressionType, CompressionOptions compressionOptions) {}
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private RocksLevelOptions getRocksLevelOptions(DatabaseLevel levelOptions) {
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var compressionType = levelOptions.compression().getType();
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var compressionOptions = new CompressionOptions();
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if (compressionType != CompressionType.NO_COMPRESSION) {
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compressionOptions.setEnabled(true);
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compressionOptions.setMaxDictBytes(levelOptions.maxDictBytes());
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} else {
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compressionOptions.setEnabled(false);
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}
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return new RocksLevelOptions(compressionType, compressionOptions);
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}
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private void registerGauge(MeterRegistry meterRegistry, String name, String propertyName) {
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meterRegistry.gauge("rocksdb.property.value",
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List.of(Tag.of("db.name", name), Tag.of("db.property.name", propertyName)),
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db,
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database -> {
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if (closed) {
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return 0d;
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}
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try {
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return database.getAggregatedLongProperty(propertyName);
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} catch (RocksDBException e) {
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throw new RuntimeException(e);
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}
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}
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);
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}
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@Override
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public String getDatabaseName() {
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return name;
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}
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private void flushAndCloseDb(RocksDB db, List<ColumnFamilyHandle> handles)
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throws RocksDBException {
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flushDb(db, handles);
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for (ColumnFamilyHandle handle : handles) {
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try {
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handle.close();
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} catch (Exception ex) {
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logger.error("Can't close column family", ex);
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}
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}
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try {
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db.closeE();
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} catch (RocksDBException ex) {
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if ("Cannot close DB with unreleased snapshot.".equals(ex.getMessage())) {
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snapshotsHandles.forEach((id, snapshot) -> {
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try {
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db.releaseSnapshot(snapshot);
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} catch (Exception ex2) {
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// ignore exception
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logger.debug("Failed to release snapshot " + id, ex2);
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}
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});
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db.closeE();
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}
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throw ex;
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}
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}
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private void flushDb(RocksDB db, List<ColumnFamilyHandle> handles) throws RocksDBException {
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if (Schedulers.isInNonBlockingThread()) {
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logger.error("Called flushDb in a nonblocking thread");
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}
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// force flush the database
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try (var flushOptions = new FlushOptions().setWaitForFlush(true).setAllowWriteStall(true)) {
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db.flush(flushOptions);
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}
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try (var flushOptions = new FlushOptions().setWaitForFlush(true).setAllowWriteStall(true)) {
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db.flush(flushOptions, handles);
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}
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db.flushWal(true);
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db.syncWal();
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// end force flush
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}
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@SuppressWarnings("unused")
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private void compactDb(TransactionDB db, List<ColumnFamilyHandle> handles) {
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if (Schedulers.isInNonBlockingThread()) {
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logger.error("Called compactDb in a nonblocking thread");
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}
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// force compact the database
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for (ColumnFamilyHandle cfh : handles) {
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var t = new Thread(() -> {
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int r = ThreadLocalRandom.current().nextInt();
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var s = StopWatch.createStarted();
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try {
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// Range rangeToCompact = db.suggestCompactRange(cfh);
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logger.info("Compacting range {}", r);
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db.compactRange(cfh, null, null, new CompactRangeOptions()
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.setAllowWriteStall(true)
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.setExclusiveManualCompaction(true)
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.setChangeLevel(false));
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} catch (RocksDBException e) {
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if ("Database shutdown".equalsIgnoreCase(e.getMessage())) {
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logger.warn("Compaction cancelled: database shutdown");
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} else {
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logger.warn("Failed to compact range", e);
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}
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}
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logger.info("Compacted range {} in {} milliseconds", r, s.getTime(TimeUnit.MILLISECONDS));
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}, "Compaction");
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t.setDaemon(true);
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t.start();
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}
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// end force compact
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}
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record OptionsWithCache(DBOptions options, @Nullable Cache standardCache, @Nullable Cache compressedCache) {}
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private static OptionsWithCache openRocksDb(@Nullable Path path, DatabaseOptions databaseOptions) throws IOException {
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// Get databases directory path
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Path databasesDirPath;
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if (path != null) {
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databasesDirPath = path.toAbsolutePath().getParent();
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// Create base directories
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if (Files.notExists(databasesDirPath)) {
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Files.createDirectories(databasesDirPath);
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}
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} else {
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databasesDirPath = null;
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}
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// the Options class contains a set of configurable DB options
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// that determines the behaviour of the database.
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var options = new DBOptions();
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options.setEnablePipelinedWrite(true);
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options.setMaxSubcompactions(2);
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var customWriteRate = Long.parseLong(System.getProperty("it.cavallium.dbengine.write.delayedrate", "-1"));
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if (customWriteRate >= 0) {
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options.setDelayedWriteRate(customWriteRate);
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} else {
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options.setDelayedWriteRate(64 * SizeUnit.MB);
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}
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options.setNewTableReaderForCompactionInputs(true);
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options.setCreateIfMissing(true);
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options.setSkipStatsUpdateOnDbOpen(true);
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options.setCreateMissingColumnFamilies(true);
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options.setInfoLogLevel(InfoLogLevel.WARN_LEVEL);
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options.setAvoidFlushDuringShutdown(false); // Flush all WALs during shutdown
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options.setAvoidFlushDuringRecovery(true); // Flush all WALs during startup
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options.setWalRecoveryMode(databaseOptions.absoluteConsistency()
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? WALRecoveryMode.AbsoluteConsistency
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: WALRecoveryMode.PointInTimeRecovery); // Crash if the WALs are corrupted.Default: TolerateCorruptedTailRecords
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options.setDeleteObsoleteFilesPeriodMicros(20 * 1000000); // 20 seconds
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options.setKeepLogFileNum(10);
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Objects.requireNonNull(databasesDirPath);
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Objects.requireNonNull(path.getFileName());
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List<DbPath> paths = convertPaths(databasesDirPath, path.getFileName(), databaseOptions.volumes());
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options.setDbPaths(paths);
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options.setMaxOpenFiles(databaseOptions.maxOpenFiles().orElse(-1));
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Cache blockCache;
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Cache compressedCache;
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if (databaseOptions.lowMemory()) {
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// LOW MEMORY
|
|
options
|
|
.setBytesPerSync(0) // default
|
|
.setWalBytesPerSync(0) // default
|
|
.setIncreaseParallelism(1)
|
|
.setDbWriteBufferSize(8 * SizeUnit.MB)
|
|
.setWalTtlSeconds(0)
|
|
.setWalSizeLimitMB(0) // 16MB
|
|
.setMaxTotalWalSize(0) // automatic
|
|
;
|
|
blockCache = new ClockCache(databaseOptions.blockCache().orElse( 8L * SizeUnit.MB) / 2, -1, true);
|
|
compressedCache = null;
|
|
|
|
if (databaseOptions.useDirectIO()) {
|
|
options
|
|
// Option to enable readahead in compaction
|
|
// If not set, it will be set to 2MB internally
|
|
.setCompactionReadaheadSize(2 * 1024 * 1024) // recommend at least 2MB
|
|
// Option to tune write buffer for direct writes
|
|
.setWritableFileMaxBufferSize(1024 * 1024)
|
|
;
|
|
}
|
|
} else {
|
|
// HIGH MEMORY
|
|
options
|
|
.setIncreaseParallelism(Runtime.getRuntime().availableProcessors())
|
|
.setDbWriteBufferSize(64 * SizeUnit.MB)
|
|
.setBytesPerSync(64 * SizeUnit.KB)
|
|
.setWalBytesPerSync(64 * SizeUnit.KB)
|
|
|
|
.setWalTtlSeconds(30) // flush wal after 30 seconds
|
|
.setWalSizeLimitMB(1024) // 1024MB
|
|
.setMaxTotalWalSize(2L * SizeUnit.GB) // 2GiB max wal directory size
|
|
;
|
|
blockCache = new ClockCache(databaseOptions.blockCache().orElse( 512 * SizeUnit.MB) / 2);
|
|
compressedCache = null;
|
|
|
|
if (databaseOptions.useDirectIO()) {
|
|
options
|
|
// Option to enable readahead in compaction
|
|
// If not set, it will be set to 2MB internally
|
|
.setCompactionReadaheadSize(4 * 1024 * 1024) // recommend at least 2MB
|
|
// Option to tune write buffer for direct writes
|
|
.setWritableFileMaxBufferSize(4 * 1024 * 1024)
|
|
;
|
|
}
|
|
}
|
|
|
|
options.setWriteBufferManager(new WriteBufferManager(256L * 1024L * 1024L, blockCache));
|
|
|
|
if (databaseOptions.useDirectIO()) {
|
|
options
|
|
.setAllowMmapReads(false)
|
|
.setAllowMmapWrites(false)
|
|
.setUseDirectReads(true)
|
|
;
|
|
} else {
|
|
options
|
|
.setAllowMmapReads(databaseOptions.allowMemoryMapping())
|
|
.setAllowMmapWrites(databaseOptions.allowMemoryMapping());
|
|
}
|
|
|
|
if (!databaseOptions.allowMemoryMapping()) {
|
|
options.setUseDirectIoForFlushAndCompaction(true);
|
|
}
|
|
|
|
return new OptionsWithCache(options, blockCache, compressedCache);
|
|
}
|
|
|
|
private static List<DbPath> convertPaths(Path databasesDirPath, Path path, List<DatabaseVolume> volumes) {
|
|
var paths = new ArrayList<DbPath>(volumes.size());
|
|
if (volumes.isEmpty()) {
|
|
return List.of(new DbPath(databasesDirPath.resolve(path.getFileName() + "_hot"),
|
|
100L * 1024L * 1024L * 1024L), // 100GiB
|
|
new DbPath(databasesDirPath.resolve(path.getFileName() + "_cold"),
|
|
500L * 1024L * 1024L * 1024L), // 500GiB
|
|
new DbPath(databasesDirPath.resolve(path.getFileName() + "_colder"),
|
|
500L * 1024L * 1024L * 1024L)); // 500GiB
|
|
}
|
|
for (DatabaseVolume volume : volumes) {
|
|
Path volumePath;
|
|
if (volume.volumePath().isAbsolute()) {
|
|
volumePath = volume.volumePath();
|
|
} else {
|
|
volumePath = databasesDirPath.resolve(volume.volumePath());
|
|
}
|
|
paths.add(new DbPath(volumePath, volume.targetSizeBytes()));
|
|
}
|
|
return paths;
|
|
}
|
|
|
|
private void createIfNotExists(List<ColumnFamilyDescriptor> descriptors,
|
|
DBOptions options,
|
|
boolean inMemory,
|
|
Path dbPath,
|
|
String dbPathString) throws RocksDBException {
|
|
if (inMemory) {
|
|
return;
|
|
}
|
|
if (Files.notExists(dbPath)) {
|
|
// Check if handles are all different
|
|
var descriptorsSet = new HashSet<>(descriptors);
|
|
if (descriptorsSet.size() != descriptors.size()) {
|
|
throw new IllegalArgumentException("Descriptors must be unique!");
|
|
}
|
|
|
|
List<ColumnFamilyDescriptor> descriptorsToCreate = new LinkedList<>(descriptors);
|
|
descriptorsToCreate
|
|
.removeIf((cf) -> Arrays.equals(cf.getName(), DEFAULT_COLUMN_FAMILY.getName()));
|
|
|
|
/*
|
|
SkipStatsUpdateOnDbOpen = true because this RocksDB.open session is used only to add just some columns
|
|
*/
|
|
//var dbOptionsFastLoadSlowEdit = options.setSkipStatsUpdateOnDbOpen(true);
|
|
|
|
LinkedList<ColumnFamilyHandle> handles = new LinkedList<>();
|
|
|
|
this.db = RocksDB.open(new DBOptions(options).setCreateMissingColumnFamilies(true),
|
|
dbPathString,
|
|
descriptors,
|
|
handles
|
|
);
|
|
|
|
flushAndCloseDb(db, handles);
|
|
this.db = null;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public Mono<LLLocalSingleton> getSingleton(byte[] singletonListColumnName,
|
|
byte[] name,
|
|
byte @Nullable[] defaultValue) {
|
|
return Mono
|
|
.fromCallable(() -> new LLLocalSingleton(
|
|
getRocksDBColumn(db, getCfh(singletonListColumnName)),
|
|
(snapshot) -> snapshotsHandles.get(snapshot.getSequenceNumber()),
|
|
LLLocalKeyValueDatabase.this.name,
|
|
name,
|
|
ColumnUtils.toString(singletonListColumnName),
|
|
dbScheduler,
|
|
defaultValue
|
|
))
|
|
.onErrorMap(cause -> new IOException("Failed to read " + Arrays.toString(name), cause))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
@Override
|
|
public Mono<LLLocalDictionary> getDictionary(byte[] columnName, UpdateMode updateMode) {
|
|
return Mono
|
|
.fromCallable(() -> new LLLocalDictionary(
|
|
allocator,
|
|
getRocksDBColumn(db, getCfh(columnName)),
|
|
name,
|
|
ColumnUtils.toString(columnName),
|
|
dbScheduler,
|
|
(snapshot) -> snapshotsHandles.get(snapshot.getSequenceNumber()),
|
|
updateMode,
|
|
databaseOptions
|
|
))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
public RocksDBColumn getRocksDBColumn(byte[] columnName) {
|
|
ColumnFamilyHandle cfh;
|
|
try {
|
|
cfh = getCfh(columnName);
|
|
} catch (RocksDBException e) {
|
|
throw new UnsupportedOperationException("Column family doesn't exist: " + Arrays.toString(columnName), e);
|
|
}
|
|
return getRocksDBColumn(db, cfh);
|
|
}
|
|
|
|
private RocksDBColumn getRocksDBColumn(RocksDB db, ColumnFamilyHandle cfh) {
|
|
if (db instanceof OptimisticTransactionDB optimisticTransactionDB) {
|
|
return new OptimisticRocksDBColumn(optimisticTransactionDB, databaseOptions, allocator, cfh, meterRegistry);
|
|
} else if (db instanceof TransactionDB transactionDB) {
|
|
return new PessimisticRocksDBColumn(transactionDB, databaseOptions, allocator, cfh, meterRegistry);
|
|
} else {
|
|
return new StandardRocksDBColumn(db, databaseOptions, allocator, cfh, meterRegistry);
|
|
}
|
|
}
|
|
|
|
private ColumnFamilyHandle getCfh(byte[] columnName) throws RocksDBException {
|
|
ColumnFamilyHandle cfh = handles.get(ColumnUtils.special(ColumnUtils.toString(columnName)));
|
|
assert enableColumnsBug || Arrays.equals(cfh.getName(), columnName);
|
|
return cfh;
|
|
}
|
|
|
|
public DatabaseOptions getDatabaseOptions() {
|
|
return databaseOptions;
|
|
}
|
|
|
|
@Override
|
|
public Mono<Long> getProperty(String propertyName) {
|
|
return Mono.fromCallable(() -> db.getAggregatedLongProperty(propertyName))
|
|
.onErrorMap(cause -> new IOException("Failed to read " + propertyName, cause))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
@Override
|
|
public Mono<MemoryStats> getMemoryStats() {
|
|
return Mono
|
|
.fromCallable(() -> new MemoryStats(db.getAggregatedLongProperty("rocksdb.estimate-table-readers-mem"),
|
|
db.getAggregatedLongProperty("rocksdb.size-all-mem-tables"),
|
|
db.getAggregatedLongProperty("rocksdb.cur-size-all-mem-tables"),
|
|
db.getAggregatedLongProperty("rocksdb.estimate-num-keys"),
|
|
db.getAggregatedLongProperty("rocksdb.block-cache-usage"),
|
|
db.getAggregatedLongProperty("rocksdb.block-cache-pinned-usage")
|
|
))
|
|
.onErrorMap(cause -> new IOException("Failed to read memory stats", cause))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
@Override
|
|
public Mono<Void> verifyChecksum() {
|
|
return Mono
|
|
.<Void>fromCallable(() -> {
|
|
db.verifyChecksum();
|
|
return null;
|
|
})
|
|
.onErrorMap(cause -> new IOException("Failed to verify checksum of database \""
|
|
+ getDatabaseName() + "\"", cause))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
@Override
|
|
public BufferAllocator getAllocator() {
|
|
return allocator;
|
|
}
|
|
|
|
@Override
|
|
public MeterRegistry getMeterRegistry() {
|
|
return meterRegistry;
|
|
}
|
|
|
|
@Override
|
|
public Mono<LLSnapshot> takeSnapshot() {
|
|
return Mono
|
|
.fromCallable(() -> snapshotTime.recordCallable(() -> {
|
|
var snapshot = db.getSnapshot();
|
|
long currentSnapshotSequenceNumber = nextSnapshotNumbers.getAndIncrement();
|
|
this.snapshotsHandles.put(currentSnapshotSequenceNumber, snapshot);
|
|
return new LLSnapshot(currentSnapshotSequenceNumber);
|
|
}))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
@Override
|
|
public Mono<Void> releaseSnapshot(LLSnapshot snapshot) {
|
|
return Mono
|
|
.<Void>fromCallable(() -> {
|
|
Snapshot dbSnapshot = this.snapshotsHandles.remove(snapshot.getSequenceNumber());
|
|
if (dbSnapshot == null) {
|
|
throw new IOException("Snapshot " + snapshot.getSequenceNumber() + " not found!");
|
|
}
|
|
db.releaseSnapshot(dbSnapshot);
|
|
return null;
|
|
})
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
@Override
|
|
public Mono<Void> close() {
|
|
return Mono
|
|
.<Void>fromCallable(() -> {
|
|
try {
|
|
closed = true;
|
|
flushAndCloseDb(db, new ArrayList<>(handles.values()));
|
|
deleteUnusedOldLogFiles();
|
|
} catch (RocksDBException e) {
|
|
throw new IOException(e);
|
|
}
|
|
return null;
|
|
})
|
|
.onErrorMap(cause -> new IOException("Failed to close", cause))
|
|
.subscribeOn(dbScheduler);
|
|
}
|
|
|
|
/**
|
|
* Call this method ONLY AFTER flushing completely a db and closing it!
|
|
*/
|
|
@SuppressWarnings("unused")
|
|
private void deleteUnusedOldLogFiles() {
|
|
if (!DELETE_LOG_FILES) {
|
|
return;
|
|
}
|
|
Path basePath = dbPath;
|
|
try {
|
|
Files
|
|
.walk(basePath, 1)
|
|
.filter(p -> !p.equals(basePath))
|
|
.filter(p -> {
|
|
var fileName = p.getFileName().toString();
|
|
if (fileName.startsWith("LOG.old.")) {
|
|
var parts = fileName.split("\\.");
|
|
if (parts.length == 3) {
|
|
try {
|
|
long nameSuffix = Long.parseUnsignedLong(parts[2]);
|
|
return true;
|
|
} catch (NumberFormatException ex) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
if (fileName.endsWith(".log")) {
|
|
var parts = fileName.split("\\.");
|
|
if (parts.length == 2) {
|
|
try {
|
|
int name = Integer.parseUnsignedInt(parts[0]);
|
|
return true;
|
|
} catch (NumberFormatException ex) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
})
|
|
.filter(p -> {
|
|
try {
|
|
BasicFileAttributes attrs = Files.readAttributes(p, BasicFileAttributes.class);
|
|
if (attrs.isRegularFile() && !attrs.isSymbolicLink() && !attrs.isDirectory()) {
|
|
long ctime = attrs.creationTime().toMillis();
|
|
long atime = attrs.lastAccessTime().toMillis();
|
|
long mtime = attrs.lastModifiedTime().toMillis();
|
|
long lastTime = Math.max(Math.max(ctime, atime), mtime);
|
|
long safeTime;
|
|
if (p.getFileName().toString().startsWith("LOG.old.")) {
|
|
safeTime = System.currentTimeMillis() - Duration.ofHours(24).toMillis();
|
|
} else {
|
|
safeTime = System.currentTimeMillis() - Duration.ofHours(12).toMillis();
|
|
}
|
|
if (lastTime < safeTime) {
|
|
return true;
|
|
}
|
|
}
|
|
} catch (IOException ex) {
|
|
logger.error("Error when deleting unused log files", ex);
|
|
return false;
|
|
}
|
|
return false;
|
|
})
|
|
.forEach(path -> {
|
|
try {
|
|
Files.deleteIfExists(path);
|
|
System.out.println("Deleted log file \"" + path + "\"");
|
|
} catch (IOException e) {
|
|
logger.error(MARKER_ROCKSDB, "Failed to delete log file \"" + path + "\"", e);
|
|
}
|
|
});
|
|
} catch (IOException ex) {
|
|
logger.error(MARKER_ROCKSDB, "Failed to delete unused log files", ex);
|
|
}
|
|
}
|
|
}
|