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org.springframework.data.redis.core.DefaultReactiveValueOperations Maven / Gradle / Ivy
/*
* Copyright 2017-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.data.redis.core;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.nio.ByteBuffer;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import org.reactivestreams.Publisher;
import org.springframework.data.redis.connection.BitFieldSubCommands;
import org.springframework.data.redis.connection.ReactiveStringCommands;
import org.springframework.data.redis.connection.RedisStringCommands.SetOption;
import org.springframework.data.redis.core.types.Expiration;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializationContext.SerializationPair;
import org.springframework.util.Assert;
/**
* Default implementation of {@link ReactiveValueOperations}.
*
* @author Mark Paluch
* @author Christoph Strobl
* @author Jiahe Cai
* @since 2.0
*/
@RequiredArgsConstructor
class DefaultReactiveValueOperations implements ReactiveValueOperations {
private final @NonNull ReactiveRedisTemplate template;
private final @NonNull RedisSerializationContext serializationContext;
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#set(java.lang.Object, java.lang.Object)
*/
@Override
public Mono set(K key, V value) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.set(rawKey(key), rawValue(value)));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#set(java.lang.Object, java.lang.Object, long, java.util.concurrent.TimeUnit)
*/
@Override
public Mono set(K key, V value, Duration timeout) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(timeout, "Duration must not be null!");
return createMono(
connection -> connection.set(rawKey(key), rawValue(value), Expiration.from(timeout), SetOption.UPSERT));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#setIfAbsent(java.lang.Object, java.lang.Object)
*/
@Override
public Mono setIfAbsent(K key, V value) {
Assert.notNull(key, "Key must not be null!");
return createMono(
connection -> connection.set(rawKey(key), rawValue(value), Expiration.persistent(), SetOption.SET_IF_ABSENT));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#setIfAbsent(java.lang.Object, java.lang.Object, java.time.Duration)
*/
@Override
public Mono setIfAbsent(K key, V value, Duration timeout) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(timeout, "Duration must not be null!");
return createMono(
connection -> connection.set(rawKey(key), rawValue(value), Expiration.from(timeout), SetOption.SET_IF_ABSENT));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#setIfPresent(java.lang.Object, java.lang.Object)
*/
@Override
public Mono setIfPresent(K key, V value) {
Assert.notNull(key, "Key must not be null!");
return createMono(
connection -> connection.set(rawKey(key), rawValue(value), Expiration.persistent(), SetOption.SET_IF_PRESENT));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#setIfPresent(java.lang.Object, java.lang.Object, java.time.Duration)
*/
@Override
public Mono setIfPresent(K key, V value, Duration timeout) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(timeout, "Duration must not be null!");
return createMono(
connection -> connection.set(rawKey(key), rawValue(value), Expiration.from(timeout), SetOption.SET_IF_PRESENT));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#multiSet(java.util.Map)
*/
@Override
public Mono multiSet(Map map) {
Assert.notNull(map, "Map must not be null!");
return createMono(connection -> {
Mono> serializedMap = Flux.fromIterable(() -> map.entrySet().iterator())
.collectMap(entry -> rawKey(entry.getKey()), entry -> rawValue(entry.getValue()));
return serializedMap.flatMap(connection::mSet);
});
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#multiSetIfAbsent(java.util.Map)
*/
@Override
public Mono multiSetIfAbsent(Map map) {
Assert.notNull(map, "Map must not be null!");
return createMono(connection -> {
Mono> serializedMap = Flux.fromIterable(() -> map.entrySet().iterator())
.collectMap(entry -> rawKey(entry.getKey()), entry -> rawValue(entry.getValue()));
return serializedMap.flatMap(connection::mSetNX);
});
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#get(java.lang.Object)
*/
@SuppressWarnings("unchecked")
@Override
public Mono get(Object key) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.get(rawKey((K) key)) //
.map(this::readValue));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#getAndSet(java.lang.Object, java.lang.Object)
*/
@Override
public Mono getAndSet(K key, V value) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.getSet(rawKey(key), rawValue(value)).map(value()::read));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#multiGet(java.util.Collection)
*/
@Override
public Mono> multiGet(Collection keys) {
Assert.notNull(keys, "Keys must not be null!");
return createMono(connection -> Flux.fromIterable(keys).map(key()::write).collectList().flatMap(connection::mGet)
.map(this::deserializeValues));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#increment(java.lang.Object)
*/
@Override
public Mono increment(K key) {
Assert.notNull(key, "Key must not be null!");
return template.createMono(connection -> connection.numberCommands().incr(rawKey(key)));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#increment(java.lang.Object, long)
*/
@Override
public Mono increment(K key, long delta) {
Assert.notNull(key, "Key must not be null!");
return template.createMono(connection -> connection.numberCommands().incrBy(rawKey(key), delta));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#increment(java.lang.Object, double)
*/
@Override
public Mono increment(K key, double delta) {
Assert.notNull(key, "Key must not be null!");
return template.createMono(connection -> connection.numberCommands().incrBy(rawKey(key), delta));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#decrement(java.lang.Object)
*/
@Override
public Mono decrement(K key) {
Assert.notNull(key, "Key must not be null!");
return template.createMono(connection -> connection.numberCommands().decr(rawKey(key)));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#decrement(java.lang.Object, long)
*/
@Override
public Mono decrement(K key, long delta) {
Assert.notNull(key, "Key must not be null!");
return template.createMono(connection -> connection.numberCommands().decrBy(rawKey(key), delta));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#append(java.lang.Object, java.lang.String)
*/
@Override
public Mono append(K key, String value) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(value, "Value must not be null!");
return createMono(
connection -> connection.append(rawKey(key), serializationContext.getStringSerializationPair().write(value)));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#get(java.lang.Object, long, long)
*/
@Override
public Mono get(K key, long start, long end) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.getRange(rawKey(key), start, end) //
.map(stringSerializationPair()::read));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#set(java.lang.Object, java.lang.Object, long)
*/
@Override
public Mono set(K key, V value, long offset) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.setRange(rawKey(key), rawValue(value), offset));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#size(java.lang.Object)
*/
@Override
public Mono size(K key) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.strLen(rawKey(key)));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#setBit(java.lang.Object, long, boolean)
*/
@Override
public Mono setBit(K key, long offset, boolean value) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.setBit(rawKey(key), offset, value));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#getBit(java.lang.Object, long)
*/
@Override
public Mono getBit(K key, long offset) {
Assert.notNull(key, "Key must not be null!");
return createMono(connection -> connection.getBit(rawKey(key), offset));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#bitField(java.lang.Object, org.springframework.data.redis.connection.BitFieldSubCommands)
*/
@Override
public Mono> bitField(K key, BitFieldSubCommands subCommands) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(subCommands, "BitFieldSubCommands must not be null!");
return createMono(connection -> connection.bitField(rawKey(key), subCommands));
}
/* (non-Javadoc)
* @see org.springframework.data.redis.core.ReactiveValueOperations#delete(java.lang.Object)
*/
@Override
public Mono delete(K key) {
Assert.notNull(key, "Key must not be null!");
return template.createMono(connection -> connection.keyCommands().del(rawKey(key))).map(l -> l != 0);
}
private Mono createMono(Function> function) {
Assert.notNull(function, "Function must not be null!");
return template.createMono(connection -> function.apply(connection.stringCommands()));
}
private ByteBuffer rawKey(K key) {
return serializationContext.getKeySerializationPair().write(key);
}
private ByteBuffer rawValue(V value) {
return serializationContext.getValueSerializationPair().write(value);
}
private V readValue(ByteBuffer buffer) {
return serializationContext.getValueSerializationPair().read(buffer);
}
private SerializationPair stringSerializationPair() {
return serializationContext.getStringSerializationPair();
}
private SerializationPair key() {
return serializationContext.getKeySerializationPair();
}
private SerializationPair value() {
return serializationContext.getValueSerializationPair();
}
private List deserializeValues(List source) {
List result = new ArrayList<>(source.size());
for (ByteBuffer buffer : source) {
if (buffer == null) {
result.add(null);
} else {
result.add(readValue(buffer));
}
}
return result;
}
}
