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org.springframework.data.redis.connection.lettuce.LettuceHashCommands 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.connection.lettuce;
import io.lettuce.core.MapScanCursor;
import io.lettuce.core.ScanArgs;
import io.lettuce.core.cluster.api.async.RedisClusterAsyncCommands;
import io.lettuce.core.cluster.api.sync.RedisClusterCommands;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisHashCommands;
import org.springframework.data.redis.core.Cursor;
import org.springframework.data.redis.core.KeyBoundCursor;
import org.springframework.data.redis.core.ScanIteration;
import org.springframework.data.redis.core.ScanOptions;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* @author Christoph Strobl
* @author Mark Paluch
* @since 2.0
*/
@RequiredArgsConstructor
class LettuceHashCommands implements RedisHashCommands {
private final @NonNull LettuceConnection connection;
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hSet(byte[], byte[], byte[])
*/
@Override
public Boolean hSet(byte[] key, byte[] field, byte[] value) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Field must not be null!");
Assert.notNull(value, "Value must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hset(key, field, value)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hset(key, field, value)));
return null;
}
return getConnection().hset(key, field, value);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hSetNX(byte[], byte[], byte[])
*/
@Override
public Boolean hSetNX(byte[] key, byte[] field, byte[] value) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Field must not be null!");
Assert.notNull(value, "Value must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hsetnx(key, field, value)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hsetnx(key, field, value)));
return null;
}
return getConnection().hsetnx(key, field, value);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hDel(byte[], byte[][])
*/
@Override
public Long hDel(byte[] key, byte[]... fields) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(fields, "Fields must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hdel(key, fields)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hdel(key, fields)));
return null;
}
return getConnection().hdel(key, fields);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hExists(byte[], byte[])
*/
@Override
public Boolean hExists(byte[] key, byte[] field) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Fields must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hexists(key, field)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hexists(key, field)));
return null;
}
return getConnection().hexists(key, field);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hGet(byte[], byte[])
*/
@Override
public byte[] hGet(byte[] key, byte[] field) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Field must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hget(key, field)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hget(key, field)));
return null;
}
return getConnection().hget(key, field);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hGetAll(byte[])
*/
@Override
public Map hGetAll(byte[] key) {
Assert.notNull(key, "Key must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hgetall(key)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hgetall(key)));
return null;
}
return getConnection().hgetall(key);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hIncrBy(byte[], byte[], long)
*/
@Override
public Long hIncrBy(byte[] key, byte[] field, long delta) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Field must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hincrby(key, field, delta)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hincrby(key, field, delta)));
return null;
}
return getConnection().hincrby(key, field, delta);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hIncrBy(byte[], byte[], double)
*/
@Override
public Double hIncrBy(byte[] key, byte[] field, double delta) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Field must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hincrbyfloat(key, field, delta)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hincrbyfloat(key, field, delta)));
return null;
}
return getConnection().hincrbyfloat(key, field, delta);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hKeys(byte[])
*/
@Override
public Set hKeys(byte[] key) {
Assert.notNull(key, "Key must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hkeys(key), LettuceConverters.bytesListToBytesSet()));
return null;
}
if (isQueueing()) {
transaction(
connection.newLettuceResult(getAsyncConnection().hkeys(key), LettuceConverters.bytesListToBytesSet()));
return null;
}
return LettuceConverters.toBytesSet(getConnection().hkeys(key));
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hLen(byte[])
*/
@Override
public Long hLen(byte[] key) {
Assert.notNull(key, "Key must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hlen(key)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hlen(key)));
return null;
}
return getConnection().hlen(key);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hMGet(byte[], byte[][])
*/
@Override
public List hMGet(byte[] key, byte[]... fields) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(fields, "Fields must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hmget(key, fields),
LettuceConverters.keyValueListUnwrapper()));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hmget(key, fields),
LettuceConverters.keyValueListUnwrapper()));
return null;
}
return LettuceConverters. keyValueListUnwrapper().convert(getConnection().hmget(key, fields));
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hMSet(byte[], java.util.Map)
*/
@Override
public void hMSet(byte[] key, Map hashes) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(hashes, "Hashes must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceStatusResult(getAsyncConnection().hmset(key, hashes)));
return;
}
if (isQueueing()) {
transaction(connection.newLettuceStatusResult(getAsyncConnection().hmset(key, hashes)));
return;
}
getConnection().hmset(key, hashes);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hVals(byte[])
*/
@Override
public List hVals(byte[] key) {
Assert.notNull(key, "Key must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hvals(key)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hvals(key)));
return null;
}
return getConnection().hvals(key);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
/* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hScan(byte[], org.springframework.data.redis.core.ScanOptions)
*/
@Override
public Cursor> hScan(byte[] key, ScanOptions options) {
return hScan(key, 0, options);
}
/**
* @since 1.4
* @param key
* @param cursorId
* @param options
* @return
*/
public Cursor> hScan(byte[] key, long cursorId, ScanOptions options) {
Assert.notNull(key, "Key must not be null!");
return new KeyBoundCursor>(key, cursorId, options) {
@Override
protected ScanIteration> doScan(byte[] key, long cursorId, ScanOptions options) {
if (isQueueing() || isPipelined()) {
throw new UnsupportedOperationException("'HSCAN' cannot be called in pipeline / transaction mode.");
}
io.lettuce.core.ScanCursor scanCursor = connection.getScanCursor(cursorId);
ScanArgs scanArgs = LettuceConverters.toScanArgs(options);
MapScanCursor mapScanCursor = getConnection().hscan(key, scanCursor, scanArgs);
String nextCursorId = mapScanCursor.getCursor();
Map values = mapScanCursor.getMap();
return new ScanIteration<>(Long.valueOf(nextCursorId), values.entrySet());
}
@Override
protected void doClose() {
LettuceHashCommands.this.connection.close();
}
}.open();
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.RedisHashCommands#hStrLen(byte[], byte[])
*/
@Nullable
@Override
public Long hStrLen(byte[] key, byte[] field) {
Assert.notNull(key, "Key must not be null!");
Assert.notNull(field, "Field must not be null!");
try {
if (isPipelined()) {
pipeline(connection.newLettuceResult(getAsyncConnection().hstrlen(key, field)));
return null;
}
if (isQueueing()) {
transaction(connection.newLettuceResult(getAsyncConnection().hstrlen(key, field)));
return null;
}
return getConnection().hstrlen(key, field);
} catch (Exception ex) {
throw convertLettuceAccessException(ex);
}
}
private boolean isPipelined() {
return connection.isPipelined();
}
private boolean isQueueing() {
return connection.isQueueing();
}
private void pipeline(LettuceResult result) {
connection.pipeline(result);
}
private void transaction(LettuceResult result) {
connection.transaction(result);
}
private RedisClusterAsyncCommands getAsyncConnection() {
return connection.getAsyncConnection();
}
public RedisClusterCommands getConnection() {
return connection.getConnection();
}
private DataAccessException convertLettuceAccessException(Exception ex) {
return connection.convertLettuceAccessException(ex);
}
}
