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org.redisson.spring.data.connection.RedissonReactiveStreamCommands Maven / Gradle / Ivy
/**
* Copyright (c) 2013-2022 Nikita Koksharov
*
* 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.redisson.spring.data.connection;
import org.reactivestreams.Publisher;
import org.redisson.api.StreamMessageId;
import org.redisson.client.codec.ByteArrayCodec;
import org.redisson.client.codec.StringCodec;
import org.redisson.client.protocol.RedisCommand;
import org.redisson.client.protocol.RedisCommands;
import org.redisson.client.protocol.RedisStrictCommand;
import org.redisson.reactive.CommandReactiveExecutor;
import org.springframework.data.redis.connection.ReactiveRedisConnection;
import org.springframework.data.redis.connection.ReactiveStreamCommands;
import org.springframework.data.redis.connection.stream.ByteBufferRecord;
import org.springframework.data.redis.connection.stream.RecordId;
import org.springframework.data.redis.connection.stream.StreamOffset;
import org.springframework.data.redis.connection.stream.StreamRecords;
import org.springframework.util.Assert;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import java.nio.ByteBuffer;
import java.util.*;
import java.util.stream.Collectors;
/**
*
* @author Nikita Koksharov
*
*/
public class RedissonReactiveStreamCommands extends RedissonBaseReactive implements ReactiveStreamCommands {
RedissonReactiveStreamCommands(CommandReactiveExecutor executorService) {
super(executorService);
}
private static List toStringList(List recordIds) {
return recordIds.stream().map(RecordId::getValue).collect(Collectors.toList());
}
@Override
public Flux> xAck(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
Assert.notNull(command.getGroup(), "Group must not be null!");
Assert.notNull(command.getRecordIds(), "recordIds must not be null!");
List params = new ArrayList<>();
byte[] k = toByteArray(command.getKey());
params.add(k);
params.add(command.getGroup());
params.addAll(toStringList(command.getRecordIds()));
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XACK, params.toArray());
return m.map(v -> new ReactiveRedisConnection.NumericResponse<>(command, v));
});
}
@Override
public Flux> xAdd(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
Assert.notNull(command.getBody(), "Body must not be null!");
byte[] k = toByteArray(command.getKey());
List params = new LinkedList<>();
params.add(k);
if (!command.getRecord().getId().shouldBeAutoGenerated()) {
params.add(command.getRecord().getId().getValue());
} else {
params.add("*");
}
for (Map.Entry entry : command.getBody().entrySet()) {
params.add(toByteArray(entry.getKey()));
params.add(toByteArray(entry.getValue()));
}
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XADD, params.toArray());
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, RecordId.of(v.toString())));
});
}
@Override
public Flux> xDel(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
Assert.notNull(command.getRecordIds(), "recordIds must not be null!");
byte[] k = toByteArray(command.getKey());
List params = new ArrayList<>();
params.add(k);
params.addAll(toStringList(command.getRecordIds()));
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XDEL, params.toArray());
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, v));
});
}
@Override
public Flux> xLen(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
byte[] k = toByteArray(command.getKey());
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XLEN, k);
return m.map(v -> new ReactiveRedisConnection.NumericResponse<>(command, v));
});
}
@Override
public Flux>> xRange(Publisher publisher) {
return range(RedisCommands.XRANGE, publisher);
}
private Flux>> range(RedisCommand rangeCommand, Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
Assert.notNull(command.getRange(), "Range must not be null!");
Assert.notNull(command.getLimit(), "Limit must not be null!");
byte[] k = toByteArray(command.getKey());
List params = new LinkedList<>();
params.add(k);
if (rangeCommand == RedisCommands.XRANGE) {
params.add(command.getRange().getLowerBound().getValue().orElse("-"));
params.add(command.getRange().getUpperBound().getValue().orElse("+"));
} else {
params.add(command.getRange().getUpperBound().getValue().orElse("+"));
params.add(command.getRange().getLowerBound().getValue().orElse("-"));
}
if (command.getLimit().getCount() > 0) {
params.add("COUNT");
params.add(command.getLimit().getCount());
}
Mono>> m = write(k, ByteArrayCodec.INSTANCE, rangeCommand, params.toArray());
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, Flux.fromStream(v.entrySet().stream()).map(e -> {
Map map = e.getValue().entrySet().stream()
.collect(Collectors.toMap(entry -> ByteBuffer.wrap(entry.getKey()),
entry -> ByteBuffer.wrap(entry.getValue())));
return StreamRecords.newRecord()
.in(command.getKey())
.withId(RecordId.of(e.getKey().toString()))
.ofBuffer(map);
})));
});
}
@Override
public Flux>> read(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getStreamOffsets(), "StreamOffsets must not be null!");
Assert.notNull(command.getReadOptions(), "ReadOptions must not be null!");
List params = new ArrayList<>();
if (command.getConsumer() != null) {
params.add("GROUP");
params.add(command.getConsumer().getGroup());
params.add(command.getConsumer().getName());
}
if (command.getReadOptions().getCount() != null && command.getReadOptions().getCount() > 0) {
params.add("COUNT");
params.add(command.getReadOptions().getCount());
}
if (command.getReadOptions().getBlock() != null && command.getReadOptions().getBlock() > 0) {
params.add("BLOCK");
params.add(command.getReadOptions().getBlock());
}
if (command.getConsumer() != null && command.getReadOptions().isNoack()) {
params.add("NOACK");
}
params.add("STREAMS");
for (StreamOffset streamOffset : command.getStreamOffsets()) {
params.add(toByteArray(streamOffset.getKey()));
}
for (StreamOffset streamOffset : command.getStreamOffsets()) {
params.add(streamOffset.getOffset().getOffset());
}
Mono>>> m;
if (command.getConsumer() == null) {
if (command.getReadOptions().getBlock() != null && command.getReadOptions().getBlock() > 0) {
m = read(toByteArray(command.getStreamOffsets().get(0).getKey()), ByteArrayCodec.INSTANCE, RedisCommands.XREAD_BLOCKING, params.toArray());
} else {
m = read(toByteArray(command.getStreamOffsets().get(0).getKey()), ByteArrayCodec.INSTANCE, RedisCommands.XREAD, params.toArray());
}
} else {
if (command.getReadOptions().getBlock() != null && command.getReadOptions().getBlock() > 0) {
m = read(toByteArray(command.getStreamOffsets().get(0).getKey()), ByteArrayCodec.INSTANCE, RedisCommands.XREADGROUP_BLOCKING, params.toArray());
} else {
m = read(toByteArray(command.getStreamOffsets().get(0).getKey()), ByteArrayCodec.INSTANCE, RedisCommands.XREADGROUP, params.toArray());
}
}
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, Flux.fromStream(v.entrySet().stream())
.map(ee -> {
return ee.getValue().entrySet().stream().map(e -> {
Map map = e.getValue().entrySet().stream()
.collect(Collectors.toMap(entry -> ByteBuffer.wrap(entry.getKey()),
entry -> ByteBuffer.wrap(entry.getValue())));
return StreamRecords.newRecord()
.in(ee.getKey())
.withId(RecordId.of(e.getKey().toString()))
.ofBuffer(map);
});
}).flatMap(Flux::fromStream)
));
});
}
private static final RedisStrictCommand XGROUP_STRING = new RedisStrictCommand<>("XGROUP");
@Override
public Flux> xGroup(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
Assert.notNull(command.getGroupName(), "GroupName must not be null!");
byte[] k = toByteArray(command.getKey());
if (command.getAction().equals(GroupCommand.GroupCommandAction.CREATE)) {
Assert.notNull(command.getReadOffset(), "ReadOffset must not be null!");
Mono m = write(k, StringCodec.INSTANCE, XGROUP_STRING, "CREATE", k, command.getGroupName(), command.getReadOffset().getOffset(), "MKSTREAM");
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, v));
}
if (command.getAction().equals(GroupCommand.GroupCommandAction.DELETE_CONSUMER)) {
Assert.notNull(command.getConsumerName(), "ConsumerName must not be null!");
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XGROUP_LONG, "DELCONSUMER", k, command.getGroupName(), command.getConsumerName());
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, v > 0 ? "OK" : "Error"));
}
if (command.getAction().equals(GroupCommand.GroupCommandAction.DESTROY)) {
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XGROUP_LONG, "DESTROY", k, command.getGroupName());
return m.map(v -> new ReactiveRedisConnection.CommandResponse<>(command, v > 0 ? "OK" : "Error"));
}
throw new IllegalArgumentException("unknown command " + command.getAction());
});
}
@Override
public Flux>> xRevRange(Publisher publisher) {
return range(RedisCommands.XREVRANGE, publisher);
}
@Override
public Flux> xTrim(Publisher publisher) {
return execute(publisher, command -> {
Assert.notNull(command.getKey(), "Key must not be null!");
Assert.notNull(command.getCount(), "Count must not be null!");
byte[] k = toByteArray(command.getKey());
Mono m = write(k, StringCodec.INSTANCE, RedisCommands.XTRIM, k, "MAXLEN", command.getCount());
return m.map(v -> new ReactiveRedisConnection.NumericResponse<>(command, v));
});
}
}
