org.springframework.data.redis.connection.lettuce.RedisCredentialsProviderFactory Maven / Gradle / Ivy
Show all versions of spring-data-redis Show documentation
/*
* Copyright 2022-2023 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
*
* https://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.RedisCredentials;
import io.lettuce.core.RedisCredentialsProvider;
import reactor.core.publisher.Mono;
import org.springframework.data.redis.connection.RedisConfiguration;
import org.springframework.data.redis.connection.RedisSentinelConfiguration;
import org.springframework.lang.Nullable;
/**
* Factory interface to create {@link RedisCredentialsProvider} from a {@link RedisConfiguration}. Credentials can be
* associated with {@link RedisCredentials#hasUsername() username} and/or {@link RedisCredentials#hasPassword()
* password}.
*
* Credentials are based off the given {@link RedisConfiguration} objects. Changing the credentials in the actual object
* affects the constructed {@link RedisCredentials} object. Credentials are requested by the Lettuce client after
* connecting to the host. Therefore, credential retrieval is subject to complete within the configured connection
* creation timeout to avoid connection failures.
*
* @author Mark Paluch
* @since 3.0
*/
public interface RedisCredentialsProviderFactory {
/**
* Create a {@link RedisCredentialsProvider} for data node authentication given {@link RedisConfiguration}.
*
* @param redisConfiguration the {@link RedisConfiguration} object.
* @return a {@link RedisCredentialsProvider} that emits {@link RedisCredentials} for data node authentication.
*/
@Nullable
default RedisCredentialsProvider createCredentialsProvider(RedisConfiguration redisConfiguration) {
if (redisConfiguration instanceof RedisConfiguration.WithAuthentication
&& ((RedisConfiguration.WithAuthentication) redisConfiguration).getPassword().isPresent()) {
return RedisCredentialsProvider.from(() -> {
RedisConfiguration.WithAuthentication withAuthentication = (RedisConfiguration.WithAuthentication) redisConfiguration;
return RedisCredentials.just(withAuthentication.getUsername(), withAuthentication.getPassword().get());
});
}
return () -> Mono.just(AbsentRedisCredentials.ANONYMOUS);
}
/**
* Create a {@link RedisCredentialsProvider} for Sentinel node authentication given
* {@link RedisSentinelConfiguration}.
*
* @param redisConfiguration the {@link RedisSentinelConfiguration} object.
* @return a {@link RedisCredentialsProvider} that emits {@link RedisCredentials} for sentinel authentication.
*/
default RedisCredentialsProvider createSentinelCredentialsProvider(RedisSentinelConfiguration redisConfiguration) {
if (redisConfiguration.getSentinelPassword().isPresent()) {
return RedisCredentialsProvider.from(() -> RedisCredentials.just(redisConfiguration.getSentinelUsername(),
redisConfiguration.getSentinelPassword().get()));
}
return () -> Mono.just(AbsentRedisCredentials.ANONYMOUS);
}
/**
* Default anonymous {@link RedisCredentials} without username/password.
*/
enum AbsentRedisCredentials implements RedisCredentials {
ANONYMOUS;
@Override
@Nullable
public String getUsername() {
return null;
}
@Override
public boolean hasUsername() {
return false;
}
@Override
@Nullable
public char[] getPassword() {
return null;
}
@Override
public boolean hasPassword() {
return false;
}
}
}