spring RedisReactiveHealthIndicator 源码
springboot RedisReactiveHealthIndicator 代码
文件路径:/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/data/redis/RedisReactiveHealthIndicator.java
/*
* Copyright 2012-2022 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.boot.actuate.data.redis;
import java.util.Properties;
import reactor.core.publisher.Mono;
import reactor.core.scheduler.Schedulers;
import org.springframework.boot.actuate.health.AbstractReactiveHealthIndicator;
import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.ReactiveHealthIndicator;
import org.springframework.data.redis.connection.ClusterInfo;
import org.springframework.data.redis.connection.ReactiveRedisClusterConnection;
import org.springframework.data.redis.connection.ReactiveRedisConnection;
import org.springframework.data.redis.connection.ReactiveRedisConnectionFactory;
/**
* A {@link ReactiveHealthIndicator} for Redis.
*
* @author Stephane Nicoll
* @author Mark Paluch
* @author Artsiom Yudovin
* @author Scott Frederick
* @since 2.0.0
*/
public class RedisReactiveHealthIndicator extends AbstractReactiveHealthIndicator {
private final ReactiveRedisConnectionFactory connectionFactory;
public RedisReactiveHealthIndicator(ReactiveRedisConnectionFactory connectionFactory) {
super("Redis health check failed");
this.connectionFactory = connectionFactory;
}
@Override
protected Mono<Health> doHealthCheck(Health.Builder builder) {
return getConnection().flatMap((connection) -> doHealthCheck(builder, connection));
}
private Mono<ReactiveRedisConnection> getConnection() {
return Mono.fromSupplier(this.connectionFactory::getReactiveConnection)
.subscribeOn(Schedulers.boundedElastic());
}
private Mono<Health> doHealthCheck(Health.Builder builder, ReactiveRedisConnection connection) {
return getHealth(builder, connection).onErrorResume((ex) -> Mono.just(builder.down(ex).build()))
.flatMap((health) -> connection.closeLater().thenReturn(health));
}
private Mono<Health> getHealth(Health.Builder builder, ReactiveRedisConnection connection) {
if (connection instanceof ReactiveRedisClusterConnection clusterConnection) {
return clusterConnection.clusterGetClusterInfo().map((info) -> fromClusterInfo(builder, info));
}
return connection.serverCommands().info("server").map((info) -> up(builder, info));
}
private Health up(Health.Builder builder, Properties info) {
return RedisHealth.up(builder, info).build();
}
private Health fromClusterInfo(Health.Builder builder, ClusterInfo clusterInfo) {
return RedisHealth.fromClusterInfo(builder, clusterInfo).build();
}
}
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- 本文标签: Spring Boot Spring Java
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