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CavalliumDBEngine
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(unfinished) Netty 5 refactoring

This commit is contained in:
Andrea Cavalli 2021-08-31 15:50:11 +02:00
parent 0faef5316e
commit 013d26387d
9 changed files with 377 additions and 606 deletions
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26
src/main/java/it/cavallium/dbengine/database/LLUtils.java
View File

@ -82,8 +82,8 @@ public class LLUtils {
return bool ? RESPONSE_TRUE : RESPONSE_FALSE;
}
public static Buffer booleanToResponseByteBuffer(BufferAllocator alloc, boolean bool) {
return alloc.allocate(1).writeByte(bool ? (byte) 1 : 0);
public static Send<Buffer> booleanToResponseByteBuffer(BufferAllocator alloc, boolean bool) {
return alloc.allocate(1).writeByte(bool ? (byte) 1 : 0).send();
}
@Nullable
@ -349,18 +349,6 @@ public class LLUtils {
return result;
}
/*
public static Buffer toDirectCopy(Buffer buffer) {
try {
Buffer directCopyBuf = buffer.alloc().buffer(buffer.capacity(), buffer.maxCapacity());
directCopyBuf.writeBytes(buffer, 0, buffer.writerIndex());
return directCopyBuf;
} finally {
buffer.release();
}
}
*/
public static Buffer fromByteArray(BufferAllocator alloc, byte[] array) {
Buffer result = alloc.allocate(array.length);
result.writeBytes(array);
@ -378,7 +366,6 @@ public class LLUtils {
public static Send<Buffer> compositeBuffer(BufferAllocator alloc, Send<Buffer> buffer) {
try (var composite = buffer.receive().compact()) {
assert composite.countReadableComponents() == 1 || composite.countReadableComponents() == 0;
return composite.send();
}
}
@ -387,7 +374,6 @@ public class LLUtils {
try (buffer1) {
try (buffer2) {
try (var composite = CompositeBuffer.compose(alloc, buffer1, buffer2).compact()) {
assert composite.countReadableComponents() == 1 || composite.countReadableComponents() == 0;
return composite.send();
}
}
@ -399,7 +385,6 @@ public class LLUtils {
try (buffer2) {
try (buffer3) {
try (var composite = CompositeBuffer.compose(alloc, buffer1, buffer2, buffer3).compact()) {
assert composite.countReadableComponents() == 1 || composite.countReadableComponents() == 0;
return composite.send();
}
}
@ -407,6 +392,7 @@ public class LLUtils {
}
}
@SafeVarargs
public static Send<Buffer> compositeBuffer(BufferAllocator alloc, Send<Buffer>... buffers) {
try {
return switch (buffers.length) {
@ -416,7 +402,6 @@ public class LLUtils {
case 3 -> compositeBuffer(alloc, buffers[0], buffers[1], buffers[2]);
default -> {
try (var composite = CompositeBuffer.compose(alloc, buffers).compact()) {
assert composite.countReadableComponents() == 1 || composite.countReadableComponents() == 0;
yield composite.send();
}
}
@ -738,7 +723,10 @@ public class LLUtils {
}
public static boolean isDirect(Buffer key) {
if (key.countReadableComponents() == 1) {
var readableComponents = key.countReadableComponents();
if (readableComponents == 0) {
return true;
} else if (readableComponents == 1) {
return key.forEachReadable(0, (index, component) -> component.readableBuffer().isDirect()) >= 0;
} else {
return false;

70
src/main/java/it/cavallium/dbengine/database/collections/DatabaseMapDictionaryDeep.java
View File

@ -44,7 +44,9 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
private static Send<Buffer> incrementPrefix(BufferAllocator alloc, Send<Buffer> originalKeySend, int prefixLength) {
try (var originalKey = originalKeySend.receive()) {
assert originalKey.readableBytes() >= prefixLength;
try (Buffer copiedBuf = alloc.allocate(originalKey.writerOffset())) {
var originalKeyStartOffset = originalKey.readerOffset();
var originalKeyLength = originalKey.readableBytes();
try (Buffer copiedBuf = alloc.allocate(originalKey.readableBytes())) {
boolean overflowed = true;
final int ff = 0xFF;
int writtenBytes = 0;
@ -67,17 +69,19 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
originalKey.copyInto(0, copiedBuf, 0, (prefixLength - writtenBytes));
}
copiedBuf.writerOffset(copiedBuf.capacity());
copiedBuf.writerOffset(originalKeyLength);
if (originalKey.writerOffset() - prefixLength > 0) {
originalKey.copyInto(prefixLength, copiedBuf, prefixLength, originalKey.writerOffset() - prefixLength);
if (originalKeyLength - prefixLength > 0) {
originalKey.copyInto(prefixLength, copiedBuf, prefixLength, originalKeyLength - prefixLength);
}
if (overflowed) {
for (int i = 0; i < copiedBuf.writerOffset(); i++) {
copiedBuf.ensureWritable(originalKeyLength + 1);
copiedBuf.writerOffset(originalKeyLength + 1);
for (int i = 0; i < originalKeyLength; i++) {
copiedBuf.setUnsignedByte(i, 0xFF);
}
copiedBuf.writeByte((byte) 0x00);
copiedBuf.setUnsignedByte(originalKeyLength, (byte) 0x00);
}
return copiedBuf.send();
}
@ -118,8 +122,8 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
for (int i = 0; i < suffixLength + extLength; i++) {
zeroSuffixAndExt.writeByte((byte) 0x0);
}
try (Send<Buffer> result = LLUtils.compositeBuffer(alloc, prefixKey.send(), zeroSuffixAndExt.send())) {
return result;
try (Buffer result = LLUtils.compositeBuffer(alloc, prefixKey.send(), zeroSuffixAndExt.send()).receive()) {
return result.send();
}
}
}
@ -214,36 +218,38 @@ public class DatabaseMapDictionaryDeep<T, U, US extends DatabaseStage<U>> implem
}
protected DatabaseMapDictionaryDeep(LLDictionary dictionary,
Send<Buffer> prefixKey,
Send<Buffer> prefixKeyToReceive,
SerializerFixedBinaryLength<T, Send<Buffer>> keySuffixSerializer,
SubStageGetter<U, US> subStageGetter,
int keyExtLength) {
this.dictionary = dictionary;
this.alloc = dictionary.getAllocator();
this.subStageGetter = subStageGetter;
this.keySuffixSerializer = keySuffixSerializer;
this.keyPrefix = prefixKey.receive();
assert keyPrefix.isAccessible();
this.keyPrefixLength = keyPrefix.readableBytes();
this.keySuffixLength = keySuffixSerializer.getSerializedBinaryLength();
this.keyExtLength = keyExtLength;
try (Buffer firstKey = firstRangeKey(alloc,
keyPrefix.copy().send(),
keyPrefixLength,
keySuffixLength,
keyExtLength
).receive()) {
try (Buffer nextRangeKey = nextRangeKey(alloc,
keyPrefix.copy().send(),
try (var prefixKey = prefixKeyToReceive.receive()) {
this.dictionary = dictionary;
this.alloc = dictionary.getAllocator();
this.subStageGetter = subStageGetter;
this.keySuffixSerializer = keySuffixSerializer;
this.keyPrefix = prefixKey.copy();
assert keyPrefix.isAccessible();
this.keyPrefixLength = keyPrefix.readableBytes();
this.keySuffixLength = keySuffixSerializer.getSerializedBinaryLength();
this.keyExtLength = keyExtLength;
try (Buffer firstKey = firstRangeKey(alloc,
prefixKey.copy().send(),
keyPrefixLength,
keySuffixLength,
keyExtLength
).receive()) {
assert keyPrefix.isAccessible();
assert keyPrefixLength == 0 || !LLUtils.equals(firstKey, nextRangeKey);
this.range = keyPrefixLength == 0 ? LLRange.all() : LLRange.of(firstKey.send(), nextRangeKey.send());
this.rangeMono = LLUtils.lazyRetainRange(this.range);
assert subStageKeysConsistency(keyPrefixLength + keySuffixLength + keyExtLength);
).receive().compact()) {
try (Buffer nextRangeKey = nextRangeKey(alloc,
prefixKey.copy().send(),
keyPrefixLength,
keySuffixLength,
keyExtLength
).receive().compact()) {
assert keyPrefix.isAccessible();
assert keyPrefixLength == 0 || !LLUtils.equals(firstKey, nextRangeKey);
this.range = keyPrefixLength == 0 ? LLRange.all() : LLRange.of(firstKey.send(), nextRangeKey.send());
this.rangeMono = LLUtils.lazyRetainRange(this.range);
assert subStageKeysConsistency(keyPrefixLength + keySuffixLength + keyExtLength);
}
}
}
}

98
src/main/java/it/cavallium/dbengine/database/disk/LLLocalDictionary.java
View File

@ -402,7 +402,8 @@ public class LLLocalDictionary implements LLDictionary {
@Nullable WriteOptions writeOptions,
Send<Buffer> keyToReceive,
Send<Buffer> valueToReceive) throws RocksDBException {
try (WriteOptions validWriteOptions = Objects.requireNonNullElse(writeOptions, EMPTY_WRITE_OPTIONS)) {
WriteOptions validWriteOptions = Objects.requireNonNullElse(writeOptions, EMPTY_WRITE_OPTIONS);
try {
try (var key = keyToReceive.receive()) {
try (var value = valueToReceive.receive()) {
if (databaseOptions.allowNettyDirect()) {
@ -424,6 +425,10 @@ public class LLLocalDictionary implements LLDictionary {
}
}
}
} finally {
if (writeOptions != null && !(writeOptions instanceof UnreleasableWriteOptions)) {
writeOptions.close();
}
}
}
@ -523,7 +528,8 @@ public class LLLocalDictionary implements LLDictionary {
int size = RocksDB.NOT_FOUND;
byte[] keyBytes = LLUtils.toArray(key);
Holder<byte[]> data = new Holder<>();
try (var unmodifiableReadOpts = resolveSnapshot(snapshot)) {
var unmodifiableReadOpts = resolveSnapshot(snapshot);
try {
if (db.keyMayExist(cfh, unmodifiableReadOpts, keyBytes, data)) {
if (data.getValue() != null) {
size = data.getValue().length;
@ -531,6 +537,10 @@ public class LLLocalDictionary implements LLDictionary {
size = db.get(cfh, unmodifiableReadOpts, keyBytes, NO_DATA);
}
}
} finally {
if (unmodifiableReadOpts != null && !(unmodifiableReadOpts instanceof UnreleasableReadOptions)) {
unmodifiableReadOpts.close();
}
}
return size != RocksDB.NOT_FOUND;
} finally {
@ -912,55 +922,51 @@ public class LLLocalDictionary implements LLDictionary {
}
private Mono<Send<Buffer>> getPreviousData(Mono<Send<Buffer>> keyMono, LLDictionaryResultType resultType) {
return Mono
.usingWhen(keyMono,
keySend -> {
try (var key = keySend.receive()) {
return switch (resultType) {
case PREVIOUS_VALUE_EXISTENCE -> this
.containsKey(null, keyMono)
.single()
.map((Boolean bool) -> LLUtils.booleanToResponseByteBuffer(alloc, bool).send());
case PREVIOUS_VALUE -> Mono
.fromCallable(() -> {
StampedLock lock;
long stamp;
if (updateMode == UpdateMode.ALLOW) {
lock = itemsLock.getAt(getLockIndex(key));
return switch (resultType) {
case PREVIOUS_VALUE_EXISTENCE -> this
.containsKey(null, keyMono)
.single()
.map((Boolean bool) -> LLUtils.booleanToResponseByteBuffer(alloc, bool));
case PREVIOUS_VALUE -> Mono.usingWhen(
keyMono,
keySend -> this
.runOnDb(() -> {
try (var key = keySend.receive()) {
StampedLock lock;
long stamp;
if (updateMode == UpdateMode.ALLOW) {
lock = itemsLock.getAt(getLockIndex(key));
stamp = lock.readLock();
} else {
lock = null;
stamp = 0;
stamp = lock.readLock();
} else {
lock = null;
stamp = 0;
}
try {
if (logger.isTraceEnabled()) {
logger.trace("Reading {}", LLUtils.toArray(key));
}
try {
if (logger.isTraceEnabled()) {
logger.trace("Reading {}", LLUtils.toArray(key));
}
var data = new Holder<byte[]>();
if (db.keyMayExist(cfh, LLUtils.toArray(key), data)) {
if (data.getValue() != null) {
return LLUtils.fromByteArray(alloc, data.getValue()).send();
} else {
return dbGet(cfh, null, key.send(), true);
}
var data = new Holder<byte[]>();
if (db.keyMayExist(cfh, LLUtils.toArray(key), data)) {
if (data.getValue() != null) {
return LLUtils.fromByteArray(alloc, data.getValue()).send();
} else {
return null;
}
} finally {
if (updateMode == UpdateMode.ALLOW) {
lock.unlockRead(stamp);
return dbGet(cfh, null, key.send(), true);
}
} else {
return null;
}
})
.onErrorMap(cause -> new IOException("Failed to read " + LLUtils.toStringSafe(key), cause))
.subscribeOn(dbScheduler);
case VOID -> Mono.empty();
};
}
},
keySend -> Mono.fromRunnable(keySend::close)
);
} finally {
if (updateMode == UpdateMode.ALLOW) {
lock.unlockRead(stamp);
}
}
}
})
.onErrorMap(cause -> new IOException("Failed to read ", cause)),
keySend -> Mono.fromRunnable(keySend::close));
case VOID -> Mono.empty();
};
}
@Override

291
src/main/java/it/cavallium/dbengine/database/memory/LLMemoryDictionary.java
View File

@ -2,9 +2,11 @@ package it.cavallium.dbengine.database.memory;
import io.netty.buffer.api.Buffer;
import io.netty.buffer.api.BufferAllocator;
import io.netty.buffer.api.Send;
import it.cavallium.dbengine.client.BadBlock;
import it.cavallium.dbengine.database.Delta;
import it.cavallium.dbengine.database.ExtraKeyOperationResult;
import it.cavallium.dbengine.database.LLDelta;
import it.cavallium.dbengine.database.LLDictionary;
import it.cavallium.dbengine.database.LLDictionaryResultType;
import it.cavallium.dbengine.database.LLEntry;
@ -81,7 +83,7 @@ public class LLMemoryDictionary implements LLDictionary {
}
}
private Mono<Buffer> transformResult(Mono<ByteList> result, LLDictionaryResultType resultType) {
private Mono<Send<Buffer>> transformResult(Mono<ByteList> result, LLDictionaryResultType resultType) {
if (resultType == LLDictionaryResultType.PREVIOUS_VALUE) {
// Don't retain the result because it has been removed from the skip list
return result.map(this::kk);
@ -89,77 +91,80 @@ public class LLMemoryDictionary implements LLDictionary {
return result
.map(prev -> true)
.defaultIfEmpty(false)
.map(LLUtils::booleanToResponseByteBuffer);
.map((Boolean bool) -> LLUtils.booleanToResponseByteBuffer(allocator, bool));
} else {
return result.then(Mono.empty());
}
}
private ByteList k(Buffer buf) {
return new BinaryLexicographicList(LLUtils.toArray(buf));
private ByteList k(Send<Buffer> buf) {
return new BinaryLexicographicList(LLUtils.toArray(buf.receive()));
}
private Buffer kk(ByteList bytesList) {
var buffer = getAllocator().buffer(bytesList.size());
buffer.writeBytes(bytesList.toByteArray());
return buffer;
private Send<Buffer> kk(ByteList bytesList) {
try (var buffer = getAllocator().allocate(bytesList.size())) {
buffer.writeBytes(bytesList.toByteArray());
return buffer.send();
}
}
private Map<ByteList, ByteList> mapSlice(LLSnapshot snapshot, LLRange range) {
if (range.isAll()) {
return snapshots.get(resolveSnapshot(snapshot));
} else if (range.isSingle()) {
var key = k(range.getSingle());
var value = snapshots
.get(resolveSnapshot(snapshot))
.get(key);
if (value != null) {
return Map.of(key, value);
private Map<ByteList, ByteList> mapSlice(LLSnapshot snapshot, Send<LLRange> rangeToReceive) {
try (var range = rangeToReceive.receive()) {
if (range.isAll()) {
return snapshots.get(resolveSnapshot(snapshot));
} else if (range.isSingle()) {
var key = k(range.getSingle());
var value = snapshots
.get(resolveSnapshot(snapshot))
.get(key);
if (value != null) {
return Map.of(key, value);
} else {
return Map.of();
}
} else if (range.hasMin() && range.hasMax()) {
var min = k(range.getMin());
var max = k(range.getMax());
if (min.compareTo(max) > 0) {
return Map.of();
}
return snapshots
.get(resolveSnapshot(snapshot))
.subMap(min, true, max, false);
} else if (range.hasMin()) {
return snapshots
.get(resolveSnapshot(snapshot))
.tailMap(k(range.getMin()), true);
} else {
return Map.of();
return snapshots
.get(resolveSnapshot(snapshot))
.headMap(k(range.getMax()), false);
}
} else if (range.hasMin() && range.hasMax()) {
var min = k(range.getMin());
var max = k(range.getMax());
if (min.compareTo(max) > 0) {
return Map.of();
}
return snapshots
.get(resolveSnapshot(snapshot))
.subMap(min, true, max, false);
} else if (range.hasMin()) {
return snapshots
.get(resolveSnapshot(snapshot))
.tailMap(k(range.getMin()), true);
} else {
return snapshots
.get(resolveSnapshot(snapshot))
.headMap(k(range.getMax()), false);
}
}
@Override
public Mono<Buffer> get(@Nullable LLSnapshot snapshot, Mono<Buffer> keyMono, boolean existsAlmostCertainly) {
public Mono<Send<Buffer>> get(@Nullable LLSnapshot snapshot, Mono<Send<Buffer>> keyMono, boolean existsAlmostCertainly) {
return Mono.usingWhen(keyMono,
key -> Mono
.fromCallable(() -> snapshots.get(resolveSnapshot(snapshot)).get(k(key)))
.map(this::kk)
.onErrorMap(cause -> new IOException("Failed to read " + LLUtils.toStringSafe(key), cause)),
key -> Mono.fromRunnable(key::release)
.onErrorMap(cause -> new IOException("Failed to read", cause)),
key -> Mono.fromRunnable(key::close)
);
}
@Override
public Mono<Buffer> put(Mono<Buffer> keyMono, Mono<Buffer> valueMono, LLDictionaryResultType resultType) {
public Mono<Send<Buffer>> put(Mono<Send<Buffer>> keyMono, Mono<Send<Buffer>> valueMono, LLDictionaryResultType resultType) {
return Mono.usingWhen(keyMono,
key -> Mono.usingWhen(valueMono,
value -> Mono
.fromCallable(() -> mainDb.put(k(key), k(value)))
.transform(result -> this.transformResult(result, resultType))
.onErrorMap(cause -> new IOException("Failed to read " + LLUtils.toStringSafe(key), cause)),
value -> Mono.fromRunnable(value::release)
.onErrorMap(cause -> new IOException("Failed to read", cause)),
value -> Mono.fromRunnable(value::close)
),
key -> Mono.fromRunnable(key::release)
key -> Mono.fromRunnable(key::close)
);
}
@ -169,17 +174,17 @@ public class LLMemoryDictionary implements LLDictionary {
}
@Override
public Mono<Delta<Buffer>> updateAndGetDelta(Mono<Buffer> keyMono,
SerializationFunction<@Nullable Buffer, @Nullable Buffer> updater,
public Mono<LLDelta> updateAndGetDelta(Mono<Send<Buffer>> keyMono,
SerializationFunction<@Nullable Send<Buffer>, @Nullable Send<Buffer>> updater,
boolean existsAlmostCertainly) {
return Mono.usingWhen(keyMono,
key -> Mono.fromCallable(() -> {
AtomicReference<Buffer> oldRef = new AtomicReference<>(null);
AtomicReference<Send<Buffer>> oldRef = new AtomicReference<>(null);
var newValue = mainDb.compute(k(key), (_unused, old) -> {
if (old != null) {
oldRef.set(kk(old));
}
Buffer v = null;
Send<Buffer> v = null;
try {
v = updater.apply(old != null ? kk(old) : null);
} catch (SerializationException e) {
@ -189,13 +194,13 @@ public class LLMemoryDictionary implements LLDictionary {
return k(v);
} finally {
if (v != null) {
v.release();
v.close();
}
}
});
return new Delta<>(oldRef.get(), kk(newValue));
return LLDelta.of(oldRef.get(), kk(newValue));
}),
key -> Mono.fromRunnable(key::release)
key -> Mono.fromRunnable(key::close)
);
}
@ -205,183 +210,213 @@ public class LLMemoryDictionary implements LLDictionary {
}
@Override
public Mono<Buffer> remove(Mono<Buffer> keyMono, LLDictionaryResultType resultType) {
public Mono<Send<Buffer>> remove(Mono<Send<Buffer>> keyMono, LLDictionaryResultType resultType) {
return Mono.usingWhen(keyMono,
key -> Mono
.fromCallable(() -> mainDb.remove(k(key)))
// Don't retain the result because it has been removed from the skip list
.mapNotNull(bytesList -> switch (resultType) {
case VOID -> null;
case PREVIOUS_VALUE_EXISTENCE -> LLUtils.booleanToResponseByteBuffer(true);
case PREVIOUS_VALUE_EXISTENCE -> LLUtils.booleanToResponseByteBuffer(allocator, true);
case PREVIOUS_VALUE -> kk(bytesList);
})
.switchIfEmpty(Mono.defer(() -> {
if (resultType == LLDictionaryResultType.PREVIOUS_VALUE_EXISTENCE) {
return Mono.fromCallable(() -> LLUtils.booleanToResponseByteBuffer(false));
return Mono.fromCallable(() -> LLUtils.booleanToResponseByteBuffer(allocator, false));
} else {
return Mono.empty();
}
}))
.onErrorMap(cause -> new IOException("Failed to read " + LLUtils.toStringSafe(key), cause)),
key -> Mono.fromRunnable(key::release)
.onErrorMap(cause -> new IOException("Failed to read", cause)),
key -> Mono.fromRunnable(key::close)
);
}
@Override
public <K> Flux<Tuple3<K, Buffer, Optional<Buffer>>> getMulti(@Nullable LLSnapshot snapshot,
Flux<Tuple2<K, Buffer>> keys,
public <K> Flux<Tuple3<K, Send<Buffer>, Optional<Send<Buffer>>>> getMulti(@Nullable LLSnapshot snapshot,
Flux<Tuple2<K, Send<Buffer>>> keys,
boolean existsAlmostCertainly) {
return keys
.flatMapSequential(key -> {
try {
ByteList v = snapshots.get(resolveSnapshot(snapshot)).get(k(key.getT2()));
.map(key -> {
try (var t2 = key.getT2().receive()) {
ByteList v = snapshots.get(resolveSnapshot(snapshot)).get(k(t2.copy().send()));
if (v != null) {
return Flux.just(Tuples.of(key.getT1(), key.getT2().retain(), Optional.of(kk(v))));
return Tuples.of(key.getT1(), t2.send(), Optional.of(kk(v)));
} else {
return Flux.just(Tuples.of(key.getT1(), key.getT2().retain(), Optional.empty()));
return Tuples.of(key.getT1(), t2.send(), Optional.empty());
}
} finally {
key.getT2().release();
}
});
}
@Override
public Flux<LLEntry> putMulti(Flux<LLEntry> entries, boolean getOldValues) {
return entries
.handle((entry, sink) -> {
var key = entry.getKey();
var val = entry.getValue();
try {
var v = mainDb.put(k(key), k(val));
public Flux<Send<LLEntry>> putMulti(Flux<Send<LLEntry>> entries, boolean getOldValues) {
return entries.handle((entryToReceive, sink) -> {
try (var entry = entryToReceive.receive()) {
try (var key = entry.getKey().receive()) {
try (var val = entry.getValue().receive()) {
var v = mainDb.put(k(key.copy().send()), k(val.send()));
if (v == null || !getOldValues) {
sink.complete();
} else {
sink.next(new LLEntry(key.retain(), kk(v)));
sink.next(LLEntry.of(key.send(), kk(v)).send());
}
} finally {
key.release();
val.release();
}
});
}
}
});
}
@Override
public <X> Flux<ExtraKeyOperationResult<Buffer, X>> updateMulti(Flux<Tuple2<Buffer, X>> entries,
BiSerializationFunction<Buffer, X, Buffer> updateFunction) {
public <X> Flux<ExtraKeyOperationResult<Send<Buffer>, X>> updateMulti(Flux<Tuple2<Send<Buffer>, X>> entries,
BiSerializationFunction<Send<Buffer>, X, Send<Buffer>> updateFunction) {
return Flux.error(new UnsupportedOperationException("Not implemented"));
}
@Override
public Flux<LLEntry> getRange(@Nullable LLSnapshot snapshot,
Mono<LLRange> rangeMono,
public Flux<Send<LLEntry>> getRange(@Nullable LLSnapshot snapshot,
Mono<Send<LLRange>> rangeMono,
boolean existsAlmostCertainly) {
return Flux.usingWhen(rangeMono,
range -> {
if (range.isSingle()) {
return Mono.fromCallable(() -> {
var element = snapshots.get(resolveSnapshot(snapshot))
.get(k(range.getSingle()));
return new LLEntry(range.getSingle().retain(), kk(element));
}).flux();
} else {
return Mono
.fromCallable(() -> mapSlice(snapshot, range))
.flatMapMany(map -> Flux.fromIterable(map.entrySet()))
.map(entry -> new LLEntry(kk(entry.getKey()), kk(entry.getValue())));
}
},
range -> Mono.fromRunnable(range::release)
);
return Flux.usingWhen(rangeMono, rangeToReceive -> {
try (var range = rangeToReceive.receive()) {
if (range.isSingle()) {
var singleToReceive = range.getSingle();
return Mono.fromCallable(() -> {
try (var single = singleToReceive.receive()) {
var element = snapshots.get(resolveSnapshot(snapshot)).get(k(single.copy().send()));
return LLEntry.of(single.send(), kk(element)).send();
}
}).flux();
} else {
var rangeToReceive2 = range.send();
return Mono
.fromCallable(() -> mapSlice(snapshot, rangeToReceive2))
.flatMapMany(map -> Flux.fromIterable(map.entrySet()))
.map(entry -> LLEntry.of(kk(entry.getKey()), kk(entry.getValue())).send());
}
}
}, range -> Mono.fromRunnable(range::close));
}
@Override
public Flux<List<LLEntry>> getRangeGrouped(@Nullable LLSnapshot snapshot,
Mono<LLRange> rangeMono,
public Flux<List<Send<LLEntry>>> getRangeGrouped(@Nullable LLSnapshot snapshot,
Mono<Send<LLRange>> rangeMono,
int prefixLength,
boolean existsAlmostCertainly) {
return Flux.error(new UnsupportedOperationException("Not implemented"));
}
@Override
public Flux<Buffer> getRangeKeys(@Nullable LLSnapshot snapshot, Mono<LLRange> rangeMono) {
public Flux<Send<Buffer>> getRangeKeys(@Nullable LLSnapshot snapshot, Mono<Send<LLRange>> rangeMono) {
return Flux.usingWhen(rangeMono,
range -> {
if (range.isSingle()) {
return Mono.fromCallable(() -> {
var contains = snapshots.get(resolveSnapshot(snapshot))
.containsKey(k(range.getSingle()));
return contains ? range.getSingle().retain() : null;
}).flux();
} else {
return Mono
.fromCallable(() -> mapSlice(snapshot, range))
.flatMapMany(map -> Flux.fromIterable(map.entrySet()))
.map(entry -> kk(entry.getKey()));
rangeToReceive -> {
try (var range = rangeToReceive.receive()) {
if (range.isSingle()) {
var singleToReceive = range.getSingle();
return Mono.fromCallable(() -> {
try (var single = singleToReceive.receive()) {
var contains = snapshots.get(resolveSnapshot(snapshot)).containsKey(k(single.copy().send()));
return contains ? single.send() : null;
}
}).flux();
} else {
var rangeToReceive2 = range.send();
return Mono
.fromCallable(() -> mapSlice(snapshot, rangeToReceive2))
.flatMapMany(map -> Flux.fromIterable(map.entrySet()))
.map(entry -> kk(entry.getKey()));
}
}
},
range -> Mono.fromRunnable(range::release)
range -> Mono.fromRunnable(range::close)
);
}
private static record BufferWithPrefix(Send<Buffer> buffer, Send<Buffer> prefix) {}
@Override
public Flux<List<Buffer>> getRangeKeysGrouped(@Nullable LLSnapshot snapshot,
Mono<LLRange> rangeMono,
public Flux<List<Send<Buffer>>> getRangeKeysGrouped(@Nullable LLSnapshot snapshot,
Mono<Send<LLRange>> rangeMono,
int prefixLength) {
return getRangeKeys(snapshot, rangeMono)
.bufferUntilChanged(k -> k.slice(k.readerIndex(), prefixLength), LLUtils::equals);
.map(bufferToReceive -> {
try(var buffer = bufferToReceive.receive()) {
try (var bufferPrefix = buffer.copy(buffer.readerOffset(), prefixLength)) {
return new BufferWithPrefix(buffer.send(), bufferPrefix.send());
}
}
})
.windowUntilChanged(bufferTuple -> bufferTuple.prefix().receive(), LLUtils::equals)
.flatMapSequential(window -> window.map(tuple -> {
try (var ignored = tuple.prefix()) {
return tuple.buffer();
}
}).collectList());
}
@Override
public Flux<Buffer> getRangeKeyPrefixes(@Nullable LLSnapshot snapshot, Mono<LLRange> rangeMono, int prefixLength) {
public Flux<Send<Buffer>> getRangeKeyPrefixes(@Nullable LLSnapshot snapshot,
Mono<Send<LLRange>> rangeMono,
int prefixLength) {
return getRangeKeys(snapshot, rangeMono)
.distinctUntilChanged(k -> k.slice(k.readerIndex(), prefixLength), (a, b) -> {
.map(bufferToReceive -> {
try(var buffer = bufferToReceive.receive()) {
try (var bufferPrefix = buffer.copy(buffer.readerOffset(), prefixLength)) {
return new BufferWithPrefix(buffer.send(), bufferPrefix.send());
}
}
})
.distinctUntilChanged(bufferTuple -> bufferTuple.prefix().receive(), (a, b) -> {
if (LLUtils.equals(a, b)) {
b.release();
b.close();
return true;
} else {
return false;
}
})
.map(k -> k.slice(k.readerIndex(), prefixLength))
.map(tuple -> {
try (var ignored = tuple.prefix()) {
return tuple.buffer();
}
})
.transform(LLUtils::handleDiscard);
}
@Override
public Flux<BadBlock> badBlocks(Mono<LLRange> rangeMono) {
public Flux<BadBlock> badBlocks(Mono<Send<LLRange>> rangeMono) {
return Flux.empty();
}
@Override
public Mono<Void> setRange(Mono<LLRange> rangeMono, Flux<LLEntry> entries) {
public Mono<Void> setRange(Mono<Send<LLRange>> rangeMono, Flux<Send<LLEntry>> entries) {
return Mono.error(new UnsupportedOperationException("Not implemented"));
}
@Override
public Mono<Boolean> isRangeEmpty(@Nullable LLSnapshot snapshot, Mono<LLRange> rangeMono) {
public Mono<Boolean> isRangeEmpty(@Nullable LLSnapshot snapshot, Mono<Send<LLRange>> rangeMono) {
return Mono.error(new UnsupportedOperationException("Not implemented"));
}
@Override
public Mono<Long> sizeRange(@Nullable LLSnapshot snapshot, Mono<LLRange> rangeMono, boolean fast) {
public Mono<Long> sizeRange(@Nullable LLSnapshot snapshot, Mono<Send<LLRange>> rangeMono, boolean fast) {
return Mono.usingWhen(rangeMono,
range -> Mono.fromCallable(() -> (long) mapSlice(snapshot, range).size()),
range -> Mono.fromRunnable(range::release)
range -> Mono.fromRunnable(range::close)
);
}
@Override
public Mono<LLEntry> getOne(@Nullable LLSnapshot snapshot, Mono<LLRange> rangeMono) {
public Mono<Send<LLEntry>> getOne(@Nullable LLSnapshot snapshot, Mono<Send<LLRange>> rangeMono) {
return Mono.error(new UnsupportedOperationException("Not implemented"));
}
@Override
public Mono<Buffer> getOneKey(@Nullable LLSnapshot snapshot, Mono<LLRange> rangeMono) {
public Mono<Send<Buffer>> getOneKey(@Nullable LLSnapshot snapshot, Mono<Send<LLRange>> rangeMono) {
return Mono.error(new UnsupportedOperationException("Not implemented"));
}
@Override
public Mono<LLEntry> removeOne(Mono<LLRange> rangeMono) {
public Mono<Send<LLEntry>> removeOne(Mono<Send<LLRange>> rangeMono) {
return Mono.error(new UnsupportedOperationException("Not implemented"));
}

11
src/main/java/it/cavallium/dbengine/database/memory/LLMemorySingleton.java
View File

@ -14,7 +14,7 @@ public class LLMemorySingleton implements LLSingleton {
private final LLMemoryDictionary dict;
private final byte[] singletonName;
private final Mono<Buffer> singletonNameBufMono;
private final Mono<Send<Buffer>> singletonNameBufMono;
public LLMemorySingleton(LLMemoryDictionary dict, byte[] singletonName) {
this.dict = dict;
@ -22,7 +22,8 @@ public class LLMemorySingleton implements LLSingleton {
this.singletonNameBufMono = Mono.fromCallable(() -> dict
.getAllocator()
.allocate(singletonName.length)
.writeBytes(singletonName));
.writeBytes(singletonName)
.send());
}
@Override
@ -35,8 +36,8 @@ public class LLMemorySingleton implements LLSingleton {
return dict
.get(snapshot, singletonNameBufMono, false)
.map(b -> {
try (b) {
return LLUtils.toArray(b);
try (var buf = b.receive()) {
return LLUtils.toArray(buf);
}
});
}
@ -44,7 +45,7 @@ public class LLMemorySingleton implements LLSingleton {
@Override
public Mono<Void> set(byte[] value) {
var bbKey = singletonNameBufMono;
var bbVal = Mono.fromCallable(() -> dict.getAllocator().allocate(value.length).writeBytes(value));
var bbVal = Mono.fromCallable(() -> dict.getAllocator().allocate(value.length).writeBytes(value).send());
return dict
.put(bbKey, bbVal, LLDictionaryResultType.VOID)
.then();

81
src/test/java/it/cavallium/dbengine/DbTestUtils.java
View File

@ -4,10 +4,14 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.PoolArenaMetric;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.buffer.UnpooledByteBufAllocator;
import io.netty.buffer.api.Buffer;
import io.netty.buffer.api.MemoryManager;
import io.netty.buffer.api.Send;
import io.netty.buffer.api.pool.BufferAllocatorMetric;
import io.netty.buffer.api.pool.PooledBufferAllocator;
import it.cavallium.dbengine.database.Column;
import it.cavallium.dbengine.database.LLDatabaseConnection;
import it.cavallium.dbengine.database.LLDictionary;
@ -41,55 +45,26 @@ import reactor.core.scheduler.Schedulers;
public class DbTestUtils {
public static record TestAllocator(ByteBufAllocator allocator) {}
public static record TestAllocator(PooledBufferAllocator allocator) {}
public static TestAllocator newAllocator() {
return new TestAllocator(new PooledByteBufAllocator(false, 1, 0, 4096, 11, 0, 0, true));
return new TestAllocator(new PooledBufferAllocator(MemoryManager.instance(), true, 1, 8192, 9, 0, 0, false));
}
public static void destroyAllocator(TestAllocator testAllocator) {
testAllocator.allocator().close();
}
public static final AtomicInteger dbId = new AtomicInteger(0);
@SuppressWarnings("SameParameterValue")
private static int getActiveBuffers(ByteBufAllocator allocator, boolean printStats) {
int directActive = 0, directAlloc = 0, directDealloc = 0;
if (allocator instanceof PooledByteBufAllocator alloc) {
for (PoolArenaMetric arena : alloc.directArenas()) {
directActive += arena.numActiveAllocations();
directAlloc += arena.numAllocations();
directDealloc += arena.numDeallocations();
}
} else if (allocator instanceof UnpooledByteBufAllocator alloc) {
directActive += alloc.metric().usedDirectMemory();
} else {
throw new UnsupportedOperationException();
}
private static long getUsedMemory(PooledBufferAllocator allocator, boolean printStats) {
allocator.trimCurrentThreadCache();
var usedMemory = ((BufferAllocatorMetric) allocator.metric()).usedMemory();
if (printStats) {
System.out.println("directActive " + directActive + " directAlloc " + directAlloc + " directDealloc " + directDealloc);
System.out.println("usedMemory=" + usedMemory);
}
return directActive;
}
@SuppressWarnings("SameParameterValue")
private static int getActiveHeapBuffers(ByteBufAllocator allocator, boolean printStats) {
int heapActive = 0, heapAlloc = 0, heapDealloc = 0;
if (allocator instanceof PooledByteBufAllocator alloc) {
for (PoolArenaMetric arena : alloc.heapArenas()) {
heapActive += arena.numActiveAllocations();
heapAlloc += arena.numAllocations();
heapDealloc += arena.numDeallocations();
}
} else if (allocator instanceof UnpooledByteBufAllocator alloc) {
heapActive += alloc.metric().usedHeapMemory();
} else {
throw new UnsupportedOperationException();
}
if (printStats) {
System.out.println("heapActive " + heapActive + " heapAlloc " + heapAlloc + " heapDealloc " + heapDealloc);
}
return heapActive;
return usedMemory;
}
public static <U> Flux<U> tempDb(TestAllocator alloc, Function<LLKeyValueDatabase, Publisher<U>> action) {
@ -134,10 +109,6 @@ public class DbTestUtils {
public static Mono<Void> closeTempDb(TempDb tempDb) {
return tempDb.db().close().then(tempDb.connection().disconnect()).then(Mono.fromCallable(() -> {
ensureNoLeaks(tempDb.allocator().allocator(), false);
if (tempDb.allocator().allocator() instanceof PooledByteBufAllocator pooledByteBufAllocator) {
pooledByteBufAllocator.trimCurrentThreadCache();
pooledByteBufAllocator.freeThreadLocalCache();
}
if (Files.exists(tempDb.path())) {
Files.walk(tempDb.path()).sorted(Comparator.reverseOrder()).forEach(file -> {
try {
@ -151,10 +122,9 @@ public class DbTestUtils {
}).subscribeOn(Schedulers.boundedElastic())).then();
}
public static void ensureNoLeaks(ByteBufAllocator allocator, boolean printStats) {
public static void ensureNoLeaks(PooledBufferAllocator allocator, boolean printStats) {
if (allocator != null) {
assertEquals(0, getActiveBuffers(allocator, printStats));
assertEquals(0, getActiveHeapBuffers(allocator, printStats));
assertEquals(0L, getUsedMemory(allocator, printStats));
}
}
@ -195,26 +165,21 @@ public class DbTestUtils {
}
@Override
public @NotNull Short deserialize(@NotNull ByteBuf serialized) {
try {
var prevReaderIdx = serialized.readerIndex();
public @NotNull Short deserialize(@NotNull Send<Buffer> serializedToReceive) {
try (var serialized = serializedToReceive.receive()) {
var prevReaderIdx = serialized.readerOffset();
var val = serialized.readShort();
serialized.readerIndex(prevReaderIdx + Short.BYTES);
serialized.readerOffset(prevReaderIdx + Short.BYTES);
return val;
} finally {
serialized.release();
}
}
@Override
public @NotNull ByteBuf serialize(@NotNull Short deserialized) {
var out = dictionary.getAllocator().directBuffer(Short.BYTES);
try {
public @NotNull Send<Buffer> serialize(@NotNull Short deserialized) {
try (var out = dictionary.getAllocator().allocate(Short.BYTES)) {
out.writeShort(deserialized);
out.writerIndex(Short.BYTES);
return out.retain();
} finally {
out.release();
out.writerOffset(Short.BYTES);
return out.send();
}
}
}

271
src/test/java/it/cavallium/dbengine/OldDatabaseTests.java
View File

@ -1,271 +0,0 @@
package it.cavallium.dbengine;
import static it.cavallium.dbengine.client.CompositeDatabasePartLocation.CompositeDatabasePartType.KV_DATABASE;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.buffer.Unpooled;
import it.cavallium.dbengine.client.CompositeDatabasePartLocation;
import it.cavallium.dbengine.client.CompositeSnapshot;
import it.cavallium.dbengine.database.Column;
import it.cavallium.dbengine.database.LLKeyValueDatabase;
import it.cavallium.dbengine.database.UpdateMode;
import it.cavallium.dbengine.database.collections.DatabaseMapDictionary;
import it.cavallium.dbengine.database.collections.DatabaseMapDictionaryDeep;
import it.cavallium.dbengine.database.collections.SubStageGetterMap;
import it.cavallium.dbengine.client.DatabaseOptions;
import it.cavallium.dbengine.database.disk.LLLocalDatabaseConnection;
import it.cavallium.dbengine.database.serialization.Serializer;
import it.cavallium.dbengine.database.serialization.SerializerFixedBinaryLength;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Comparator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.CompletionException;
import java.util.stream.Collectors;
import org.jetbrains.annotations.NotNull;
import org.junit.jupiter.api.Test;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.core.scheduler.Schedulers;
import reactor.test.StepVerifier;
import reactor.util.function.Tuples;
public class OldDatabaseTests {
@Test
public void testDatabaseAddKeysAndCheckSize() {
LinkedHashSet<String> originalKeys = new LinkedHashSet<>(List.of("K1a", "K1b", "K1c"));
StepVerifier
.create(
tempDb()
.flatMap(db -> db
.getDictionary("testmap", UpdateMode.DISALLOW)
.map(dictionary -> DatabaseMapDictionary.simple(dictionary,
new FixedStringSerializer(3),
Serializer.noop()
))
.flatMap(collection -> Flux
.fromIterable(originalKeys)
.flatMap(k1 -> collection.putValue(k1, DUMMY_VALUE.retain()))
.then(collection.leavesCount(null, false))
)
)
)
.expectNext((long) originalKeys.size())
.verifyComplete();
}
@Test
public void testDeepDatabaseAddKeysAndCheckSize() {
LinkedHashSet<String> originalSuperKeys = new LinkedHashSet<>(List.of("K1a", "K1b", "K1c"));
LinkedHashSet<String> originalSubKeys = new LinkedHashSet<>(List.of("K2aa", "K2bb", "K2cc"));
StepVerifier
.create(
tempDb()
.flatMap(db -> db
.getDictionary("testmap", UpdateMode.DISALLOW)
.map(dictionary -> DatabaseMapDictionaryDeep.deepTail(dictionary,
new FixedStringSerializer(3),
4,
new SubStageGetterMap<>(new FixedStringSerializer(4), Serializer.noop())
))
.flatMap(collection -> Flux
.fromIterable(originalSuperKeys)
.flatMap(k1 -> collection.at(null, k1))
.flatMap(k1at -> Flux
.fromIterable(originalSubKeys)
.flatMap(k2 -> k1at.putValue(k2, DUMMY_VALUE.retain()))
)
.then(collection.leavesCount(null, false))
)
)
)
.expectNext((long) originalSuperKeys.size() * originalSubKeys.size())
.verifyComplete();
}
@Test
public void testDeepDatabaseAddKeysAndConvertToLongerOnes() {
LinkedHashSet<String> originalSuperKeys = new LinkedHashSet<>(List.of("K1a", "K1b", "K1c"));
LinkedHashSet<String> originalSubKeys = new LinkedHashSet<>(List.of("K2aa", "K2bb", "K2cc"));
String newPrefix = "xxx";
StepVerifier
.create(tempDb()
.flatMapMany(db -> addKeysAndConvertToLongerOnes(db, originalSuperKeys, originalSubKeys, newPrefix))
)
.expectNextSequence(originalSuperKeys
.stream()
.flatMap(superKey -> originalSubKeys
.stream()
.map(subKey -> Map.entry(newPrefix + superKey, newPrefix + subKey))
)
.collect(Collectors.toList())
)
.verifyComplete();
}
public static <U> Mono<? extends LLKeyValueDatabase> tempDb() {
var wrkspcPath = Path.of("/tmp/.cache/tempdb-" + DbTestUtils.dbId.incrementAndGet() + "/");
return Mono
.fromCallable(() -> {
if (Files.exists(wrkspcPath)) {
Files.walk(wrkspcPath)
.sorted(Comparator.reverseOrder())
.forEach(file -> {
try {
Files.delete(file);
} catch (IOException ex) {
throw new CompletionException(ex);
}
});
}
Files.createDirectories(wrkspcPath);
return null;
})
.subscribeOn(Schedulers.boundedElastic())
.then(new LLLocalDatabaseConnection(PooledByteBufAllocator.DEFAULT, wrkspcPath).connect())
.flatMap(conn -> conn.getDatabase("testdb",
List.of(Column.dictionary("testmap")),
new DatabaseOptions(Map.of(), true, false, true, false, true, true, true, -1)
));
}
private static final ByteBuf DUMMY_VALUE;
static {
ByteBuf buf = Unpooled.directBuffer(2, 2);
buf.writeByte(0x01);
buf.writeByte(0x03);
DUMMY_VALUE = buf;
}
private Flux<Entry<String, String>> addKeysAndConvertToLongerOnes(LLKeyValueDatabase db,
LinkedHashSet<String> originalSuperKeys,
LinkedHashSet<String> originalSubKeys,
String newPrefix) {
return Flux
.defer(() -> Mono
.zip(
db
.getDictionary("testmap", UpdateMode.DISALLOW)
.map(dictionary -> DatabaseMapDictionaryDeep.deepTail(dictionary,
new FixedStringSerializer(3),
4,
new SubStageGetterMap<>(new FixedStringSerializer(4), Serializer.noop())
)),
db
.getDictionary("testmap", UpdateMode.DISALLOW)
.map(dictionary -> DatabaseMapDictionaryDeep.deepTail(dictionary,
new FixedStringSerializer(6),
7,
new SubStageGetterMap<>(new FixedStringSerializer(7), Serializer.noop())
))
)
.single()
.flatMap(tuple -> {
var db1 = tuple.getT1();
return Flux
.fromIterable(originalSuperKeys)
.concatMap(superKey -> db1.at(null, superKey))
.concatMap(at -> Flux
.fromIterable(originalSubKeys)
.concatMap(subKey -> at
.at(null, subKey)
.flatMap(at2 -> at2
.set(DUMMY_VALUE.retainedSlice())
.doAfterTerminate(at2::release)
)
)
.doAfterTerminate(at::release)
)
.then(db
.takeSnapshot()
.map(snapshot -> new CompositeSnapshot(Map.of(CompositeDatabasePartLocation.of(KV_DATABASE,
db.getDatabaseName()), snapshot)))
)
.map(snapshot -> Tuples.of(tuple.getT1(), tuple.getT2(), snapshot))
.single();
})
.single()
.flatMap(tuple -> tuple.getT1().clear().thenReturn(tuple))
.flatMap(tuple -> tuple
.getT1()
.leavesCount(null, false)
.flatMap(count -> count == 0 ? Mono.just(tuple) : Mono.error(new IllegalStateException(
"Failed to clear map. Remaining elements after clear: " + count)))
)
.flatMapMany(tuple -> {
var oldDb = tuple.getT1();
var newDb = tuple.getT2();
var snapshot = tuple.getT3();
return oldDb
.getAllStages(snapshot)
.concatMap(parentEntry -> Mono
.fromCallable(() -> newPrefix + parentEntry.getKey())
.flatMapMany(newId1 -> parentEntry.getValue()
.getAllValues(snapshot)
.concatMap(entry -> Mono
.fromCallable(() -> newPrefix + entry.getKey())
.flatMap(newId2 -> newDb
.at(null, newId1)
.flatMap(newStage -> newStage
.putValue(newId2, entry.getValue())
.doAfterTerminate(newStage::release)
)
.thenReturn(Map.entry(newId1, newId2))
)
)
)
.doAfterTerminate(() -> parentEntry.getValue().release())
)
.concatWith(db
.releaseSnapshot(snapshot.getSnapshot(db))
.then(oldDb.close())
.then(newDb.close())
.then(Mono.empty())
);
})
);
}
private static class FixedStringSerializer implements SerializerFixedBinaryLength<String, ByteBuf> {
private final int size;
public FixedStringSerializer(int i) {
this.size = i;
}
@Override
public int getSerializedBinaryLength() {
return size;
}
@Override
public @NotNull String deserialize(ByteBuf serialized) {
try {
return serialized.toString(StandardCharsets.US_ASCII);
} finally {
serialized.release();
}
}
@Override
public ByteBuf serialize(@NotNull String deserialized) {
var serialized = deserialized.getBytes(StandardCharsets.US_ASCII);
var serializedBuf = Unpooled.directBuffer(serialized.length, serialized.length);
serializedBuf.writeBytes(serialized);
assert serializedBuf.isDirect();
return serializedBuf;
}
}
}

21
src/test/java/it/cavallium/dbengine/TestLLDictionaryLeaks.java
View File

@ -7,6 +7,8 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.api.Buffer;
import io.netty.buffer.api.Send;
import it.cavallium.dbengine.DbTestUtils.TempDb;
import it.cavallium.dbengine.DbTestUtils.TestAllocator;
import it.cavallium.dbengine.database.LLDictionary;
@ -75,7 +77,7 @@ public class TestLLDictionaryLeaks {
}
private LLDictionary getDict(UpdateMode updateMode) {
var dict = DbTestUtils.tempDictionary(db, updateMode).block();
var dict = DbTestUtils.tempDictionary(db, updateMode).blockOptional().orElseThrow();
var key1 = Mono.fromCallable(() -> fromString("test-key-1"));
var key2 = Mono.fromCallable(() -> fromString("test-key-2"));
var key3 = Mono.fromCallable(() -> fromString("test-key-3"));
@ -88,11 +90,12 @@ public class TestLLDictionaryLeaks {
return dict;
}
private ByteBuf fromString(String s) {
private Send<Buffer> fromString(String s) {
var sb = s.getBytes(StandardCharsets.UTF_8);
var b = db.getAllocator().buffer(sb.length);
b.writeBytes(b);
return b;
try (var b = db.getAllocator().allocate(sb.length)) {
b.writeBytes(b);
return b.send();
}
}
private void run(Flux<?> publisher) {
@ -131,6 +134,14 @@ public class TestLLDictionaryLeaks {
public void testNoOp() {
}
@Test
public void testNoOpAllocation() {
for (int i = 0; i < 10; i++) {
var a = allocator.allocator().allocate(i * 512);
a.send().receive().close();
}
}
@ParameterizedTest
@MethodSource("provideArguments")
public void testGetDict(UpdateMode updateMode) {

114
src/test/java/it/cavallium/dbengine/database/collections/TestRanges.java
View File

@ -3,14 +3,30 @@ package it.cavallium.dbengine.database.collections;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.buffer.Unpooled;
import io.netty.buffer.api.BufferAllocator;
import io.netty.buffer.api.pool.PooledBufferAllocator;
import it.cavallium.dbengine.database.LLUtils;
import java.util.Arrays;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import static io.netty.buffer.Unpooled.*;
public class TestRanges {
private static BufferAllocator alloc;
@BeforeAll
public static void beforeAll() {
alloc = BufferAllocator.offHeapPooled();
}
@AfterAll
public static void afterAll() {
alloc = BufferAllocator.offHeapPooled();
}
@Test
public void testDirectBuffer() {
Assertions.assertTrue(wrappedBuffer(Unpooled.directBuffer(10, 10), Unpooled.buffer(10, 10)).isDirect());
@ -25,25 +41,31 @@ public class TestRanges {
testNextRangeKey(new byte[] {0x00, 0x00, (byte) 0xFF});
testNextRangeKey(new byte[] {0x00, 0x01, (byte) 0xFF});
testNextRangeKey(new byte[] {0x00, (byte) 0xFF, (byte) 0xFF});
}
@Test
public void testNextRangeKey2() {
testNextRangeKey(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF});
testNextRangeKey(new byte[] {(byte) 0xFF, (byte) 0, (byte) 0xFF});
testNextRangeKey(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0});
}
public void testNextRangeKey(byte[] prefixKey) {
byte[] firstRangeKey = LLUtils.toArray(DatabaseMapDictionaryDeep.firstRangeKey(PooledByteBufAllocator.DEFAULT,
LLUtils.convertToDirectByteBuf(PooledByteBufAllocator.DEFAULT, wrappedBuffer(prefixKey)),
byte[] firstRangeKey;
try (var firstRangeKeyBuf = DatabaseMapDictionaryDeep.firstRangeKey(alloc,
alloc.allocate(prefixKey.length).writeBytes(prefixKey).send(),
prefixKey.length, 7, 3).receive()) {
firstRangeKey = LLUtils.toArray(firstRangeKeyBuf);
}
byte[] nextRangeKey;
try (var nextRangeKeyBuf = DatabaseMapDictionaryDeep.nextRangeKey(alloc,
alloc.allocate(prefixKey.length).writeBytes(prefixKey).send(),
prefixKey.length,
7,
3
));
byte[] nextRangeKey = LLUtils.toArray(DatabaseMapDictionaryDeep.nextRangeKey(PooledByteBufAllocator.DEFAULT,
LLUtils.convertToDirectByteBuf(PooledByteBufAllocator.DEFAULT, wrappedBuffer(prefixKey)),
prefixKey.length,
7,
3
));
).receive()) {
nextRangeKey = LLUtils.toArray(nextRangeKeyBuf);
}
if (Arrays.equals(prefixKey, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF})) {
Assertions.assertArrayEquals(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, 0}, nextRangeKey);
@ -78,6 +100,9 @@ public class TestRanges {
testNextRangeKeyWithSuffix(new byte[] {0x00, 0x00, (byte) 0xFF}, new byte[] {0x00, 0x00, (byte) 0xFF});
testNextRangeKeyWithSuffix(new byte[] {0x00, 0x01, (byte) 0xFF}, new byte[] {0x00, 0x01, (byte) 0xFF});
testNextRangeKeyWithSuffix(new byte[] {0x00, (byte) 0xFF, (byte) 0xFF}, new byte[] {0x00, (byte) 0xFF, (byte) 0xFF});
}
@Test
public void testNextRangeKeyWithSuffix2() {
testNextRangeKeyWithSuffix(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF}, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF});
testNextRangeKeyWithSuffix(new byte[] {(byte) 0xFF, (byte) 0, (byte) 0xFF}, new byte[] {(byte) 0xFF, (byte) 0, (byte) 0xFF});
testNextRangeKeyWithSuffix(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0}, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0});
@ -85,47 +110,52 @@ public class TestRanges {
public void testNextRangeKeyWithSuffix(byte[] prefixKey, byte[] suffixKey) {
byte[] firstRangeKey = LLUtils.toArray(DatabaseMapDictionaryDeep.firstRangeKey(ByteBufAllocator.DEFAULT,
LLUtils.convertToDirectByteBuf(PooledByteBufAllocator.DEFAULT, wrappedBuffer(prefixKey)),
LLUtils.convertToDirectByteBuf(PooledByteBufAllocator.DEFAULT, wrappedBuffer(suffixKey)),
byte[] firstRangeKey;
try (var firstRangeKeyBuf = DatabaseMapDictionaryDeep.firstRangeKey(alloc,
alloc.allocate(prefixKey.length).writeBytes(prefixKey).send(),
alloc.allocate(suffixKey.length).writeBytes(suffixKey).send(),
prefixKey.length,
3,
7
));
byte[] nextRangeKey = LLUtils.toArray(DatabaseMapDictionaryDeep.nextRangeKey(ByteBufAllocator.DEFAULT,
LLUtils.convertToDirectByteBuf(PooledByteBufAllocator.DEFAULT, wrappedBuffer(prefixKey)),
LLUtils.convertToDirectByteBuf(PooledByteBufAllocator.DEFAULT, wrappedBuffer(suffixKey)),
).receive()) {
firstRangeKey = LLUtils.toArray(firstRangeKeyBuf);
}
try (var nextRangeKeyBuf = DatabaseMapDictionaryDeep.nextRangeKey(alloc,
alloc.allocate(prefixKey.length).writeBytes(prefixKey).send(),
alloc.allocate(suffixKey.length).writeBytes(suffixKey).send(),
prefixKey.length,
3,
7
));
).receive()) {
byte[] nextRangeKey = LLUtils.toArray(nextRangeKeyBuf);
if (Arrays.equals(prefixKey, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF}) && Arrays.equals(suffixKey, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF})) {
Assertions.assertArrayEquals(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, 0}, nextRangeKey);
} else {
long biPrefix = 0;
var s = 0;
for (int i = (suffixKey.length) - 1; i >= 0; i--) {
biPrefix += ((long) (suffixKey[i] & 0xFF)) << s;
s += Byte.SIZE;
}
for (int i = (prefixKey.length) - 1; i >= 0; i--) {
biPrefix += ((long) (prefixKey[i] & 0xFF)) << s;
s += Byte.SIZE;
}
var nrPrefix = Arrays.copyOf(nextRangeKey, prefixKey.length + suffixKey.length);
if (Arrays.equals(prefixKey, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF}) && Arrays.equals(suffixKey, new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF})) {
Assertions.assertArrayEquals(new byte[] {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, 0}, nextRangeKey);
} else {
long biPrefix = 0;
var s = 0;
for (int i = (suffixKey.length) - 1; i >= 0; i--) {
biPrefix += ((long) (suffixKey[i] & 0xFF)) << s;
s += Byte.SIZE;
}
for (int i = (prefixKey.length) - 1; i >= 0; i--) {
biPrefix += ((long) (prefixKey[i] & 0xFF)) << s;
s += Byte.SIZE;
}
var nrPrefix = Arrays.copyOf(nextRangeKey, prefixKey.length + suffixKey.length);
long biNextPrefix = 0;
s = 0;
for (int i = (prefixKey.length + suffixKey.length) - 1; i >= 0; i--) {
biNextPrefix += ((long) (nrPrefix[i] & 0xFF)) << s;
s += Byte.SIZE;
long biNextPrefix = 0;
s = 0;
for (int i = (prefixKey.length + suffixKey.length) - 1; i >= 0; i--) {
biNextPrefix += ((long) (nrPrefix[i] & 0xFF)) << s;
s += Byte.SIZE;
}
Assertions.assertEquals(biPrefix + 1, biNextPrefix);
Assertions.assertArrayEquals(
new byte[7],
Arrays.copyOfRange(nextRangeKey, prefixKey.length + suffixKey.length, prefixKey.length + suffixKey.length + 7)
);
}
Assertions.assertEquals(biPrefix + 1, biNextPrefix);
Assertions.assertArrayEquals(
new byte[7],
Arrays.copyOfRange(nextRangeKey, prefixKey.length + suffixKey.length, prefixKey.length + suffixKey.length + 7)
);
}
}
}