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CavalliumDBEngine
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Async LLInt and LLLong

This commit is contained in:
Andrea Cavalli 2021-01-30 10:52:14 +01:00
parent b1612cb20f
commit 3ad9efe71f
4 changed files with 34 additions and 30 deletions
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6
src/main/java/it/cavallium/dbengine/database/LLSingleton.java
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@ -1,11 +1,11 @@
package it.cavallium.dbengine.database;
import java.io.IOException;
import org.jetbrains.annotations.Nullable;
import reactor.core.publisher.Mono;
public interface LLSingleton extends LLKeyValueDatabaseStructure {
byte[] get(@Nullable LLSnapshot snapshot) throws IOException;
Mono<byte[]> get(@Nullable LLSnapshot snapshot);
void set(byte[] value) throws IOException;
Mono<Void> set(byte[] value);
}

27
src/main/java/it/cavallium/dbengine/database/disk/LLLocalSingleton.java
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@ -10,6 +10,8 @@ import org.rocksdb.RocksDBException;
import org.rocksdb.Snapshot;
import it.cavallium.dbengine.database.LLSingleton;
import it.cavallium.dbengine.database.LLSnapshot;
import reactor.core.publisher.Mono;
import reactor.core.scheduler.Schedulers;
public class LLLocalSingleton implements LLSingleton {
@ -44,21 +46,22 @@ public class LLLocalSingleton implements LLSingleton {
}
@Override
public byte[] get(@Nullable LLSnapshot snapshot) throws IOException {
try {
return db.get(cfh, resolveSnapshot(snapshot), name);
} catch (RocksDBException e) {
throw new IOException(e);
}
public Mono<byte[]> get(@Nullable LLSnapshot snapshot) {
return Mono
.fromCallable(() -> db.get(cfh, resolveSnapshot(snapshot), name))
.onErrorMap(IOException::new)
.subscribeOn(Schedulers.boundedElastic());
}
@Override
public void set(byte[] value) throws IOException {
try {
db.put(cfh, name, value);
} catch (RocksDBException e) {
throw new IOException(e);
}
public Mono<Void> set(byte[] value) {
return Mono
.<Void>fromCallable(() -> {
db.put(cfh, name, value);
return null;
})
.onErrorMap(IOException::new)
.subscribeOn(Schedulers.boundedElastic());
}
@Override

10
src/main/java/it/cavallium/dbengine/database/structures/LLInt.java
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@ -4,8 +4,8 @@ import com.google.common.primitives.Ints;
import it.cavallium.dbengine.database.LLKeyValueDatabaseStructure;
import it.cavallium.dbengine.database.LLSingleton;
import it.cavallium.dbengine.database.LLSnapshot;
import java.io.IOException;
import org.jetbrains.annotations.Nullable;
import reactor.core.publisher.Mono;
public class LLInt implements LLKeyValueDatabaseStructure {
@ -15,12 +15,12 @@ public class LLInt implements LLKeyValueDatabaseStructure {
this.singleton = singleton;
}
public int get(@Nullable LLSnapshot snapshot) throws IOException {
return Ints.fromByteArray(singleton.get(snapshot));
public Mono<Integer> get(@Nullable LLSnapshot snapshot) {
return singleton.get(snapshot).map(Ints::fromByteArray);
}
public void set(int value) throws IOException {
singleton.set(Ints.toByteArray(value));
public Mono<Void> set(int value) {
return singleton.set(Ints.toByteArray(value));
}
@Override

21
src/main/java/it/cavallium/dbengine/database/structures/LLLong.java
View File

@ -5,8 +5,8 @@ import com.google.common.primitives.Longs;
import it.cavallium.dbengine.database.LLKeyValueDatabaseStructure;
import it.cavallium.dbengine.database.LLSingleton;
import it.cavallium.dbengine.database.LLSnapshot;
import java.io.IOException;
import org.jetbrains.annotations.Nullable;
import reactor.core.publisher.Mono;
public class LLLong implements LLKeyValueDatabaseStructure {
@ -16,17 +16,18 @@ public class LLLong implements LLKeyValueDatabaseStructure {
this.singleton = singleton;
}
public long get(@Nullable LLSnapshot snapshot) throws IOException {
var array = singleton.get(snapshot);
if (array.length == 4) {
return Ints.fromByteArray(array);
} else {
return Longs.fromByteArray(array);
}
public Mono<Long> get(@Nullable LLSnapshot snapshot) {
return singleton.get(snapshot).map(array -> {
if (array.length == 4) {
return (long) Ints.fromByteArray(array);
} else {
return Longs.fromByteArray(array);
}
});
}
public void set(long value) throws IOException {
singleton.set(Longs.toByteArray(value));
public Mono<Void> set(long value) {
return singleton.set(Longs.toByteArray(value));
}
@Override