andreacavalli/FileSponge
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Update dbengine

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This commit is contained in:
Andrea Cavalli 2021-10-19 00:28:30 +02:00
parent 2cfe213280
commit e181432483
3 changed files with 74 additions and 46 deletions
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64
src/main/java/org/warp/filesponge/DiskCache.java
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@ -32,7 +32,6 @@ import it.cavallium.dbengine.database.UpdateMode;
import it.cavallium.dbengine.database.UpdateReturnMode;
import it.cavallium.dbengine.client.DatabaseOptions;
import it.cavallium.dbengine.database.serialization.SerializationException;
import it.cavallium.dbengine.database.serialization.Serializer.DeserializationResult;
import it.unimi.dsi.fastutil.booleans.BooleanArrayList;
import java.util.List;
import java.util.Objects;
@ -56,7 +55,7 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
this.db = db;
this.fileContent = fileContent;
this.fileMetadata = fileMetadata;
this.diskMetadataSerializer = new DiskMetadataSerializer(db.getAllocator());
this.diskMetadataSerializer = new DiskMetadataSerializer();
}
public static Mono<DiskCache> open(LLDatabaseConnection databaseConnection,
@ -78,19 +77,54 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
@Override
public Mono<Void> writeMetadata(URL url, Metadata metadata) {
Mono<Send<Buffer>> keyMono = Mono.fromCallable(() -> url.getSerializer(db.getAllocator()).serialize(url));
Mono<Send<Buffer>> keyMono = Mono.fromCallable(() -> serializeUrl(url));
return fileMetadata
.update(keyMono, oldValue -> Objects.requireNonNullElseGet(oldValue,
() -> diskMetadataSerializer.serialize(new DiskMetadata(metadata.size(),
() -> serializeMetadata(new DiskMetadata(metadata.size(),
BooleanArrayList.wrap(new boolean[DiskMetadata.getBlocksCount(metadata.size(), BLOCK_SIZE)])
))
), UpdateReturnMode.NOTHING)
.then();
}
private Send<Buffer> serializeUrl(URL url) {
var urlSerializer = url.getSerializer();
int sizeHint = urlSerializer.getSerializedSizeHint();
if (sizeHint == -1) sizeHint = 64;
try (var buffer = db.getAllocator().allocate(sizeHint)) {
try {
urlSerializer.serialize(url, buffer);
} catch (SerializationException ex) {
throw new IllegalStateException("Failed to serialize url", ex);
}
return buffer.send();
}
}
private Send<Buffer> serializeMetadata(DiskMetadata diskMetadata) {
int sizeHint = diskMetadataSerializer.getSerializedSizeHint();
if (sizeHint == -1) sizeHint = 64;
try (var buffer = db.getAllocator().allocate(sizeHint)) {
try {
diskMetadataSerializer.serialize(diskMetadata, buffer);
} catch (SerializationException ex) {
throw new IllegalStateException("Failed to serialize metadata", ex);
}
return buffer.send();
}
}
private DiskMetadata deserializeMetadata(Send<Buffer> prevBytes) {
try (var prevBytesBuf = prevBytes.receive()) {
return diskMetadataSerializer.deserialize(prevBytesBuf);
} catch (SerializationException ex) {
throw new IllegalStateException("Failed to deserialize metadata", ex);
}
}
@Override
public Mono<Void> writeContentBlock(URL url, DataBlock dataBlock) {
Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> url.getSerializer(db.getAllocator()).serialize(url));
Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
Mono<Send<Buffer>> blockKeyMono = Mono.fromCallable(() -> getBlockKey(url, dataBlock.getId()));
return Mono
.fromCallable(dataBlock::getData)
@ -106,7 +140,7 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
.then(fileMetadata.update(urlKeyMono, prevBytes -> {
@Nullable DiskMetadata result;
if (prevBytes != null) {
DiskMetadata prevMeta = diskMetadataSerializer.deserialize(prevBytes).deserializedData();
DiskMetadata prevMeta = deserializeMetadata(prevBytes);
if (!prevMeta.isDownloadedBlock(dataBlock.getId())) {
BooleanArrayList bal = prevMeta.downloadedBlocks().clone();
if (prevMeta.size() == -1) {
@ -130,7 +164,7 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
result = null;
}
if (result != null) {
return diskMetadataSerializer.serialize(result);
return serializeMetadata(result);
} else {
return null;
}
@ -178,8 +212,8 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
);
}
private Send<Buffer> getBlockKey(URL url, int blockId) throws SerializationException {
try (var urlBytes = url.getSerializer(db.getAllocator()).serialize(url).receive()) {
private Send<Buffer> getBlockKey(URL url, int blockId) {
try (var urlBytes = serializeUrl(url).receive()) {
Buffer blockIdBytes = this.db.getAllocator().allocate(Integer.BYTES);
blockIdBytes.writeInt(blockId);
return LLUtils.compositeBuffer(db.getAllocator(), urlBytes.send(), blockIdBytes.send()).send();
@ -192,11 +226,10 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
@Override
public Mono<DiskMetadata> requestDiskMetadata(URL url) {
Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> url.getSerializer(db.getAllocator()).serialize(url));
Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
return fileMetadata
.get(null, urlKeyMono)
.map(diskMetadataSerializer::deserialize)
.map(DeserializationResult::deserializedData);
.map(this::deserializeMetadata);
}
@Override
@ -207,16 +240,15 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
@Override
public Mono<Tuple2<Metadata, Flux<DataBlock>>> request(URL url) {
Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> url.getSerializer(db.getAllocator()).serialize(url));
Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
return Mono
.using(
() -> url.getSerializer(db.getAllocator()).serialize(url),
() -> serializeUrl(url),
key -> fileMetadata.get(null, urlKeyMono),
Send::close
)
.map(serialized -> {
var diskMetadataDeserializationResult = diskMetadataSerializer.deserialize(serialized);
var diskMeta = diskMetadataDeserializationResult.deserializedData();
var diskMeta = deserializeMetadata(serialized);
var meta = diskMeta.asMetadata();
if (diskMeta.isDownloadedFully()) {
return Tuples.of(meta, this.requestContent(url));

54
src/main/java/org/warp/filesponge/DiskMetadata.java
View File

@ -21,8 +21,10 @@ package org.warp.filesponge;
import io.net5.buffer.api.Buffer;
import io.net5.buffer.api.BufferAllocator;
import io.net5.buffer.api.Send;
import it.cavallium.dbengine.database.serialization.BufferDataInput;
import it.cavallium.dbengine.database.serialization.BufferDataInputOwned;
import it.cavallium.dbengine.database.serialization.BufferDataInputShared;
import it.cavallium.dbengine.database.serialization.BufferDataOutput;
import it.cavallium.dbengine.database.serialization.SerializationException;
import it.cavallium.dbengine.database.serialization.Serializer;
import it.unimi.dsi.fastutil.booleans.BooleanArrayList;
import org.jetbrains.annotations.NotNull;
@ -37,19 +39,19 @@ public record DiskMetadata(int size, BooleanArrayList downloadedBlocks) {
// Ensure blocks count is valid by calling getBlocksCount()
getBlocksCount();
// It's fully downloaded if every block is true
downloadedFullyVal = !this.downloadedBlocks().contains(false);
downloadedFullyVal = !this.downloadedBlocks.contains(false);
return downloadedFullyVal;
}
@SuppressWarnings("UnusedReturnValue")
private int getBlocksCount() {
if (size == -1) {
return downloadedBlocks().size();
return downloadedBlocks.size();
}
var expectedBlocksCount = getBlocksCount(size, FileSponge.BLOCK_SIZE);
if (this.downloadedBlocks().size() != expectedBlocksCount) {
if (this.downloadedBlocks.size() != expectedBlocksCount) {
throw new IllegalStateException(
"Blocks array length (" + this.downloadedBlocks().size() + ") != expected blocks count ("
"Blocks array length (" + this.downloadedBlocks.size() + ") != expected blocks count ("
+ expectedBlocksCount + ")");
}
return expectedBlocksCount;
@ -67,24 +69,18 @@ public record DiskMetadata(int size, BooleanArrayList downloadedBlocks) {
}
public boolean isDownloadedBlock(int id) {
if (size == -1 && downloadedBlocks().size() <= id) {
if (size == -1 && downloadedBlocks.size() <= id) {
return false;
} else {
return downloadedBlocks().getBoolean(id);
return downloadedBlocks.getBoolean(id);
}
}
public static class DiskMetadataSerializer implements Serializer<DiskMetadata> {
private final BufferAllocator allocator;
public DiskMetadataSerializer(BufferAllocator allocator) {
this.allocator = allocator;
}
@Override
public @NotNull DeserializationResult<DiskMetadata> deserialize(@NotNull Send<Buffer> serialized) {
var dis = new BufferDataInput(serialized);
public @NotNull DiskMetadata deserialize(@NotNull Buffer serialized) throws SerializationException {
var dis = new BufferDataInputShared(serialized);
int size = dis.readInt();
int blocksCount;
if (size == -1) {
@ -96,25 +92,25 @@ public record DiskMetadata(int size, BooleanArrayList downloadedBlocks) {
for (int i = 0; i < blocksCount; i++) {
downloadedBlocks.add(dis.readBoolean());
}
return new DeserializationResult<>(new DiskMetadata(size, downloadedBlocks), dis.getReadBytesCount());
return new DiskMetadata(size, downloadedBlocks);
}
@Override
public @NotNull Send<Buffer> serialize(@NotNull DiskMetadata deserialized) {
try (var buffer = allocator.allocate(64)) {
var dos = new BufferDataOutput(buffer);
dos.writeInt(deserialized.size());
if (deserialized.size == -1) {
dos.writeShort(deserialized.getBlocksCount());
} else {
deserialized.getBlocksCount();
}
for (boolean downloadedBlock : deserialized.downloadedBlocks()) {
dos.writeBoolean(downloadedBlock);
}
return buffer.send();
public void serialize(@NotNull DiskMetadata deserialized, Buffer output) throws SerializationException {
var dos = new BufferDataOutput(output);
dos.writeInt(deserialized.size);
var blocksCount = deserialized.getBlocksCount();
if (deserialized.size == -1) {
dos.writeShort(blocksCount);
}
for (boolean downloadedBlock : deserialized.downloadedBlocks) {
dos.writeBoolean(downloadedBlock);
}
}
@Override
public int getSerializedSizeHint() {
return Integer.BYTES;
}
}
}

2
src/main/java/org/warp/filesponge/URL.java
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@ -23,6 +23,6 @@ import it.cavallium.dbengine.database.serialization.Serializer;
public interface URL {
Serializer<URL> getSerializer(BufferAllocator allocator);
Serializer<URL> getSerializer();
}