I am getting the following exception in the spring gateway. This exception appears when I have configured Redis Sentinel in the gateway, it throughs exception after a couple of requests in the gateway. If I remove the redis config the gatway is fine.
2022-04-25 15:11:13.475 INFO 1 --- [oundedElastic-8] c.y.c.g.GlobalErrorWebExceptionHandler : Global catch for ex=Connection has been closed BEFORE send operation 2022-04-25 15:11:13.478 ERROR 1 --- [oundedElastic-7] c.y.c.g.GlobalErrorWebExceptionHandler : Unhandled throwable= reactor.netty.channel.AbortedException: Connection has been closed BEFORE send operation at reactor.netty.channel.AbortedException.beforeSend(AbortedException.java:59) ~[reactor-netty-core-1.0.17.jar!/:1.0.17] Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: Error has been observed at the following site(s): __checkpoint ⇢ Handler org.springframework.boot.actuate.endpoint.web.reactive.AbstractWebFluxEndpointHandlerMapping$ReadOperationHandler#handle(ServerWebExchange) [DispatcherHandler] checkpoint ⇢ com.demo.gateway.config.CorsConfig$$Lambda$1120/0x00000008014c8730 [DefaultWebFilterChain] *checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain] __checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain] __checkpoint ⇢ HTTP GET "/actuator/health/liveness" [ExceptionHandlingWebHandler] Original Stack Trace: at reactor.netty.channel.AbortedException.beforeSend(AbortedException.java:59) ~[reactor-netty-core-1.0.17.jar!/:1.0.17] at reactor.netty.http.HttpOperations.then(HttpOperations.java:171) ~[reactor-netty-http-1.0.17.jar!/:1.0.17] at reactor.netty.ReactorNetty$OutboundThen.<init>(ReactorNetty.java:702) ~[reactor-netty-core-1.0.17.jar!/:1.0.17] at reactor.netty.ReactorNetty$OutboundThen.<init>(ReactorNetty.java:695) ~[reactor-netty-core-1.0.17.jar!/:1.0.17] at reactor.netty.NettyOutbound.then(NettyOutbound.java:358) ~[reactor-netty-core-1.0.17.jar!/:1.0.17] at reactor.netty.http.HttpOperations.send(HttpOperations.java:109) ~[reactor-netty-http-1.0.17.jar!/:1.0.17] at org.springframework.http.server.reactive.ReactorServerHttpResponse.writeWithInternal(ReactorServerHttpResponse.java:92) ~[spring-web-5.3.18.jar!/:5.3.18] at org.springframework.http.server.reactive.AbstractServerHttpResponse.lambda$null$2(AbstractServerHttpResponse.java:221) ~[spring-web-5.3.18.jar!/:5.3.18] at org.springframework.http.server.reactive.AbstractServerHttpResponse.doCommit(AbstractServerHttpResponse.java:297) ~[spring-web-5.3.18.jar!/:5.3.18] at org.springframework.http.server.reactive.AbstractServerHttpResponse.lambda$writeWith$5(AbstractServerHttpResponse.java:218) ~[spring-web-5.3.18.jar!/:5.3.18] at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:125) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.request(FluxContextWrite.java:136) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:110) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onSubscribe(FluxContextWrite.java:101) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-> >3.4.16.jar!/:3.4.16] at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.Operators$MonoInnerProducerBase.complete(Operators.java:2664) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.MonoSingle$SingleSubscriber.onComplete(MonoSingle.java:180) ~[reactor-core-3.4.16.jar!/:3.4.16] at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onCogateway pom dependencies are
<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.6.6</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.demo</groupId><artifactId>gateway</artifactId><version>1.1.1</version><name>Gateway</name><description>Gateway</description><properties><java.version>17</java.version><spring.cloud-version>2021.0.1</spring.cloud-version><modelmapper-spring-boot-starter.version>1.1.0</modelmapper-spring-boot-starter.version><io.jsonwebtoken.version>0.11.2</io.jsonwebtoken.version><bcpkix-jdk15on.version>1.68</bcpkix-jdk15on.version><yc-common-api.version>1.2.6</yc-common-api.version></properties><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-bootstrap</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-config</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId></dependency><dependency><groupId>com.demo</groupId><artifactId>yc-common-api</artifactId><version>${yc-common-api.version}</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>org.flywaydb</groupId><artifactId>flyway-core</artifactId><scope>runtime</scope></dependency><dependency><groupId>com.github.jmnarloch</groupId><artifactId>modelmapper-spring-boot-starter</artifactId><version>${modelmapper-spring-boot-starter.version}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.bouncycastle</groupId><artifactId>bcpkix-jdk15on</artifactId><version>${bcpkix-jdk15on.version}</version></dependency><!-- JSON WEB Token dependencies --><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-api</artifactId><version>${io.jsonwebtoken.version}</version><scope>compile</scope></dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-impl</artifactId><version>${io.jsonwebtoken.version}</version><scope>runtime</scope></dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt-jackson</artifactId><version>${io.jsonwebtoken.version}</version><scope>runtime</scope></dependency><!-- only required for XML error response of legacy /api/v2/phone/{phone} endpoint --><dependency><groupId>jakarta.xml.bind</groupId><artifactId>jakarta.xml.bind-api</artifactId></dependency>Redis config class
@Slf4j@Configurationpublic class RedisConfig extends CachingConfigurerSupport { @Autowired private RedisProperties redisProperties; @Bean(name = "redisConnectionFactory") public RedisConnectionFactory redisConnectionFactory() { RedisSentinelConfiguration sentinelConfig = new RedisSentinelConfiguration(); sentinelConfig.setMaster(redisProperties.getSentinel().getMaster()); redisProperties.getSentinel().getNodes().forEach(s -> sentinelConfig.sentinel(s, Integer.valueOf(redisProperties.getPort()))); sentinelConfig.setPassword(RedisPassword.of(redisProperties.getPassword())); GenericObjectPoolConfig<LettuceConnection> genericObjectPoolConfig = new GenericObjectPoolConfig<>(); genericObjectPoolConfig.setMaxIdle(redisProperties.getLettuce().getPool().getMaxIdle()); genericObjectPoolConfig.setMaxTotal(redisProperties.getLettuce().getPool().getMaxActive()); LettucePoolingClientConfiguration poolConfig = LettucePoolingClientConfiguration.builder() .clientName(redisProperties.getClientName()) .poolConfig(genericObjectPoolConfig) .clientOptions(ClientOptions.builder() .socketOptions(SocketOptions.builder().connectTimeout(redisProperties.getTimeout()).build()).build()) .build(); LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory(sentinelConfig, poolConfig); connectionFactory.setPipeliningFlushPolicy(PipeliningFlushPolicy.buffered(1000)); connectionFactory.setDatabase(redisProperties.getDatabase()); return connectionFactory; } @Bean(name = "cachingRedisTemplate") public RedisTemplate<String, String> redisTemplate(@Qualifier("redisConnectionFactory") RedisConnectionFactory redisConnectionFactory) { RedisTemplate<String, String> template = new RedisTemplate<>(); template.setConnectionFactory(redisConnectionFactory); template.setKeySerializer(new StringRedisSerializer(StandardCharsets.UTF_8)); template.setValueSerializer(new StringRedisSerializer(StandardCharsets.UTF_8)); return template; }Redis properties
spring.cache.type=redisspring.redis.client-name=${spring.application.name}spring.redis.database=0spring.redis.password=passwordspring.redis.timeout=1000spring.redis.host=redis.hostspring.redis.port=26379spring.redis.sentinel.master=mymasterspring.redis.sentinel.nodes=redis.clusterspring.redis.sentinel.password=passwordspring.redis.lettuce.pool.max-active=30spring.redis.lettuce.pool.max-idle=30