Spring Boot と Spring Cloud Circuit Breaker の Spring Retry を組み合わせたサーキットブレーカーサンプルです。
Spring Cloud Circuit Breaker によって提供されたサーキットブレーカー機能を利用します。いくつか実装を選択することができますが、本サンプルでは Rejilience4j を利用します。
- Java 17 以降
- Maven 3.6 以降
- HTTP エンドポイントを呼び出すために、
curlを利用します。
spring-boot-starter-web 以外に、以下のライブラリが必要です。詳細は、pom.xml を参照してください。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-circuitbreaker-spring-retry</artifactId>
<version>2.0.2</version>
<dependency>以下のコマンドでビルドします。
mvn clean package
以下のコマンドでSpring Boot アプリケーションを起動します。
mvn spring-boot:run
以下のログが表示され、アプリケーションが起動します。
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.5.5)
2021-10-11 14:03:12.082 INFO 22471 --- [ main] o.p.w.s.cb.sb.r4j.SampleApplication : Starting SampleApplication using Java 17.0.11 on NICKEL with PID 22471 (/work/waf-java-samples/circuitbreaker/03-springboot-cb/target/classes started by moris in /work/waf-java-samples/circuitbreaker/03-springboot-cb)
2021-10-11 14:03:12.090 INFO 22471 --- [ main] o.p.w.s.cb.sb.r4j.SampleApplication : No active profile set, falling back to default profiles: default
2021-10-11 14:03:14.859 INFO 22471 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=dc13a1f0-731b-3a8e-9bc3-ef28ee6e6c54
2021-10-11 14:03:16.618 INFO 22471 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-10-11 14:03:16.647 INFO 22471 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-10-11 14:03:16.647 INFO 22471 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.53]
ポートを変更したい場合は、コマンドラインに以下の引数を付加して実行してください。
mvn spring-boot:run -Dspring-boot.run.arguments=--server.port=8888
/test1 と /test2 のエンドポイントが定義しており、実装方法は異なりました同じ振る舞いをします。/test1 では、プログラムによってサーキットブレーカーを構成した例、/test2 は @CircutBreaker アノテーションで構成されています。
@Bean
public Customizer<SpringRetryCircuitBreakerFactory> defaultCustomizer() {
logger.info("defaultCustomizer");
Map<Class<? extends Throwable>, Boolean> retryableExceptions = new HashMap<>();
retryableExceptions.put(HttpServerErrorException.class, true);
RetryPolicy retryPolicy = new SimpleRetryPolicy(3, retryableExceptions);
CircuitBreakerRetryPolicy policy = new CircuitBreakerRetryPolicy(retryPolicy);
policy.setOpenTimeout(5000);
policy.setResetTimeout(10000);
return factory -> factory
.configure(builder -> builder.retryPolicy(policy).build(), "myconfig1");
}test1.sh を実行します。アプリケーションの動作を分りやすくするために、org.springframework.retry のデバッグレベルを TRACEにしてあります。
初期状態（CLOSED）-> OPEN へ遷移する例です。設定通り5秒以内に3回以上失敗すると、 OPEN への遷移します。3回目の呼び出しログで、最終的に Opening circuit と出力されるのが確認できます。それ移行の呼び出しは、サーキットブレーカーによってブロックされます。
2021-10-11 21:14:38.433 INFO 1462 --- [nio-8080-exec-1] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:38.492 TRACE 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=0, lastException=null, exhausted=false]
2021-10-11 21:14:38.493 TRACE 1462 --- [nio-8080-exec-1] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:38.493 DEBUG 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:14:38.498 INFO 1462 --- [nio-8080-exec-1] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:14:39.076 TRACE 1462 --- [nio-8080-exec-1] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:39.076 DEBUG 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : Checking for rethrow: count=1
2021-10-11 21:14:39.076 ERROR 1462 --- [nio-8080-exec-1] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:39.146 INFO 1462 --- [nio-8080-exec-2] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:39.147 TRACE 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=1, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:39.148 TRACE 1462 --- [nio-8080-exec-2] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:39.148 DEBUG 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : Retry: count=1
2021-10-11 21:14:39.148 INFO 1462 --- [nio-8080-exec-2] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:14:39.363 TRACE 1462 --- [nio-8080-exec-2] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:39.363 DEBUG 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : Checking for rethrow: count=2
2021-10-11 21:14:39.363 ERROR 1462 --- [nio-8080-exec-2] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:39.375 INFO 1462 --- [nio-8080-exec-3] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:39.376 TRACE 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=2, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:39.376 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:39.376 DEBUG 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : Retry: count=2
2021-10-11 21:14:39.376 INFO 1462 --- [nio-8080-exec-3] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:14:39.570 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Opening circuit
2021-10-11 21:14:39.570 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Opening circuit
2021-10-11 21:14:39.570 DEBUG 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : Checking for rethrow: count=3
2021-10-11 21:14:39.571 ERROR 1462 --- [nio-8080-exec-3] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:39.583 INFO 1462 --- [nio-8080-exec-4] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:39.584 TRACE 1462 --- [nio-8080-exec-4] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:39.584 ERROR 1462 --- [nio-8080-exec-4] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:39.595 INFO 1462 --- [nio-8080-exec-5] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:39.595 TRACE 1462 --- [nio-8080-exec-5] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:39.595 ERROR 1462 --- [nio-8080-exec-5] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
一定期間経過すると（設定では10秒）、設定はリセットされ CLOSED に遷移しますが、閾値を超えると再び OPEN へと遷移します。
2021-10-11 21:14:51.606 INFO 1462 --- [nio-8080-exec-6] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:51.607 TRACE 1462 --- [nio-8080-exec-6] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:51.607 TRACE 1462 --- [nio-8080-exec-6] o.s.r.policy.CircuitBreakerRetryPolicy : Closing
2021-10-11 21:14:51.607 TRACE 1462 --- [nio-8080-exec-6] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:51.607 TRACE 1462 --- [nio-8080-exec-6] o.s.r.policy.CircuitBreakerRetryPolicy : Resetting context
2021-10-11 21:14:51.607 TRACE 1462 --- [nio-8080-exec-6] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:51.607 DEBUG 1462 --- [nio-8080-exec-6] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:14:51.607 INFO 1462 --- [nio-8080-exec-6] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/200
2021-10-11 21:14:52.811 INFO 1462 --- [nio-8080-exec-1] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:52.811 TRACE 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=0, lastException=null, exhausted=false]
2021-10-11 21:14:52.812 TRACE 1462 --- [nio-8080-exec-1] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:52.812 DEBUG 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:14:52.812 INFO 1462 --- [nio-8080-exec-1] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:14:53.004 TRACE 1462 --- [nio-8080-exec-1] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:53.005 DEBUG 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : Checking for rethrow: count=1
2021-10-11 21:14:53.005 ERROR 1462 --- [nio-8080-exec-1] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:53.017 INFO 1462 --- [nio-8080-exec-2] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:53.018 TRACE 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=1, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:53.018 TRACE 1462 --- [nio-8080-exec-2] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:53.018 DEBUG 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : Retry: count=1
2021-10-11 21:14:53.018 INFO 1462 --- [nio-8080-exec-2] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:14:53.213 TRACE 1462 --- [nio-8080-exec-2] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:53.214 DEBUG 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : Checking for rethrow: count=2
2021-10-11 21:14:53.214 ERROR 1462 --- [nio-8080-exec-2] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:53.225 INFO 1462 --- [nio-8080-exec-3] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:53.226 TRACE 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=2, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:53.226 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:14:53.226 DEBUG 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : Retry: count=2
2021-10-11 21:14:53.226 INFO 1462 --- [nio-8080-exec-3] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:14:53.420 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Opening circuit
2021-10-11 21:14:53.421 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Opening circuit
2021-10-11 21:14:53.421 DEBUG 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : Checking for rethrow: count=3
2021-10-11 21:14:53.421 ERROR 1462 --- [nio-8080-exec-3] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:53.433 INFO 1462 --- [nio-8080-exec-4] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:53.434 TRACE 1462 --- [nio-8080-exec-4] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:53.434 ERROR 1462 --- [nio-8080-exec-4] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:53.445 INFO 1462 --- [nio-8080-exec-5] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:53.445 TRACE 1462 --- [nio-8080-exec-5] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:53.445 ERROR 1462 --- [nio-8080-exec-5] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
2021-10-11 21:14:53.456 INFO 1462 --- [nio-8080-exec-6] o.p.sample.waf.cb.sb.SampleController : test1
2021-10-11 21:14:53.457 TRACE 1462 --- [nio-8080-exec-6] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:14:53.457 ERROR 1462 --- [nio-8080-exec-6] org.pnop.sample.waf.cb.sb.SampleService : org.springframework.web.client.HttpServerErrorException$InternalServerError 500 INTERNAL SERVER ERROR: [no body]
ログ出力の冗長な部分を一部割愛しています。
test2 も同様の振る舞いをしますが、ログが多少異なります。
2021-10-11 21:20:43.246 INFO 1462 --- [nio-8080-exec-7] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:43.281 DEBUG 1462 --- [nio-8080-exec-7] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(2c091021)
2021-10-11 21:20:43.291 TRACE 1462 --- [nio-8080-exec-7] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=0, lastException=null, exhausted=false]
2021-10-11 21:20:43.291 TRACE 1462 --- [nio-8080-exec-7] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:43.291 DEBUG 1462 --- [nio-8080-exec-7] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:20:43.292 INFO 1462 --- [nio-8080-exec-7] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:20:43.738 TRACE 1462 --- [nio-8080-exec-7] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:43.738 DEBUG 1462 --- [nio-8080-exec-7] o.s.retry.support.RetryTemplate : Checking for rethrow: count=1
2021-10-11 21:20:43.738 ERROR 1462 --- [nio-8080-exec-7] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:43.738 DEBUG 1462 --- [nio-8080-exec-7] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:43.749 INFO 1462 --- [nio-8080-exec-8] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:43.749 DEBUG 1462 --- [nio-8080-exec-8] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(19f56f81)
2021-10-11 21:20:43.751 TRACE 1462 --- [nio-8080-exec-8] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=1, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:43.751 TRACE 1462 --- [nio-8080-exec-8] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:43.751 DEBUG 1462 --- [nio-8080-exec-8] o.s.retry.support.RetryTemplate : Retry: count=1
2021-10-11 21:20:43.751 INFO 1462 --- [nio-8080-exec-8] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:20:43.976 TRACE 1462 --- [nio-8080-exec-8] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:43.976 DEBUG 1462 --- [nio-8080-exec-8] o.s.retry.support.RetryTemplate : Checking for rethrow: count=2
2021-10-11 21:20:43.976 ERROR 1462 --- [nio-8080-exec-8] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:43.976 DEBUG 1462 --- [nio-8080-exec-8] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:43.987 INFO 1462 --- [nio-8080-exec-9] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:43.987 DEBUG 1462 --- [nio-8080-exec-9] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(41638994)
2021-10-11 21:20:43.987 TRACE 1462 --- [nio-8080-exec-9] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=2, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:43.988 TRACE 1462 --- [nio-8080-exec-9] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:43.988 DEBUG 1462 --- [nio-8080-exec-9] o.s.retry.support.RetryTemplate : Retry: count=2
2021-10-11 21:20:43.988 INFO 1462 --- [nio-8080-exec-9] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:20:44.392 TRACE 1462 --- [nio-8080-exec-9] o.s.r.policy.CircuitBreakerRetryPolicy : Opening circuit
2021-10-11 21:20:44.392 DEBUG 1462 --- [nio-8080-exec-9] o.s.retry.support.RetryTemplate : Checking for rethrow: count=3
2021-10-11 21:20:44.392 ERROR 1462 --- [nio-8080-exec-9] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:44.392 DEBUG 1462 --- [nio-8080-exec-9] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:44.403 INFO 1462 --- [nio-8080-exec-1] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:44.403 DEBUG 1462 --- [nio-8080-exec-1] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(7a9576ef)
2021-10-11 21:20:44.404 TRACE 1462 --- [nio-8080-exec-1] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:44.404 ERROR 1462 --- [nio-8080-exec-1] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:44.404 DEBUG 1462 --- [nio-8080-exec-1] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:44.412 INFO 1462 --- [nio-8080-exec-2] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:44.412 DEBUG 1462 --- [nio-8080-exec-2] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(2b69880c)
2021-10-11 21:20:44.412 TRACE 1462 --- [nio-8080-exec-2] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:44.413 ERROR 1462 --- [nio-8080-exec-2] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:44.413 DEBUG 1462 --- [nio-8080-exec-2] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:56.422 INFO 1462 --- [nio-8080-exec-3] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:56.423 DEBUG 1462 --- [nio-8080-exec-3] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(630b66fb)
2021-10-11 21:20:56.423 TRACE 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:56.423 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Closing
2021-10-11 21:20:56.423 TRACE 1462 --- [nio-8080-exec-3] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:56.423 DEBUG 1462 --- [nio-8080-exec-3] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:20:56.423 INFO 1462 --- [nio-8080-exec-3] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/200
2021-10-11 21:20:56.802 INFO 1462 --- [nio-8080-exec-3] org.pnop.sample.waf.cb.sb.SampleService : success
2021-10-11 21:20:56.802 DEBUG 1462 --- [nio-8080-exec-3] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (success)
2021-10-11 21:20:56.814 INFO 1462 --- [nio-8080-exec-4] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:56.814 DEBUG 1462 --- [nio-8080-exec-4] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(5c2f4359)
2021-10-11 21:20:56.814 TRACE 1462 --- [nio-8080-exec-4] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=0, lastException=null, exhausted=false]
2021-10-11 21:20:56.814 TRACE 1462 --- [nio-8080-exec-4] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:56.815 DEBUG 1462 --- [nio-8080-exec-4] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:20:56.815 INFO 1462 --- [nio-8080-exec-4] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/200
2021-10-11 21:20:57.006 INFO 1462 --- [nio-8080-exec-4] org.pnop.sample.waf.cb.sb.SampleService : success
2021-10-11 21:20:57.006 DEBUG 1462 --- [nio-8080-exec-4] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (success)
2021-10-11 21:20:57.018 INFO 1462 --- [nio-8080-exec-5] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:57.018 DEBUG 1462 --- [nio-8080-exec-5] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(12801f15)
2021-10-11 21:20:57.018 TRACE 1462 --- [nio-8080-exec-5] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=0, lastException=null, exhausted=false]
2021-10-11 21:20:57.018 TRACE 1462 --- [nio-8080-exec-5] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:57.018 DEBUG 1462 --- [nio-8080-exec-5] o.s.retry.support.RetryTemplate : Retry: count=0
2021-10-11 21:20:57.018 INFO 1462 --- [nio-8080-exec-5] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:20:57.208 TRACE 1462 --- [nio-8080-exec-5] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:57.209 DEBUG 1462 --- [nio-8080-exec-5] o.s.retry.support.RetryTemplate : Checking for rethrow: count=1
2021-10-11 21:20:57.209 ERROR 1462 --- [nio-8080-exec-5] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:57.209 DEBUG 1462 --- [nio-8080-exec-5] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:57.220 INFO 1462 --- [nio-8080-exec-6] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:57.220 DEBUG 1462 --- [nio-8080-exec-6] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(2a6747bb)
2021-10-11 21:20:57.221 TRACE 1462 --- [nio-8080-exec-6] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=1, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:57.221 TRACE 1462 --- [nio-8080-exec-6] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:57.221 DEBUG 1462 --- [nio-8080-exec-6] o.s.retry.support.RetryTemplate : Retry: count=1
2021-10-11 21:20:57.221 INFO 1462 --- [nio-8080-exec-6] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:20:57.411 TRACE 1462 --- [nio-8080-exec-6] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:57.411 DEBUG 1462 --- [nio-8080-exec-6] o.s.retry.support.RetryTemplate : Checking for rethrow: count=2
2021-10-11 21:20:57.411 ERROR 1462 --- [nio-8080-exec-6] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:57.411 DEBUG 1462 --- [nio-8080-exec-6] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:57.421 INFO 1462 --- [nio-8080-exec-7] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:57.421 DEBUG 1462 --- [nio-8080-exec-7] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(369e1a42)
2021-10-11 21:20:57.422 TRACE 1462 --- [nio-8080-exec-7] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=2, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:57.422 TRACE 1462 --- [nio-8080-exec-7] o.s.r.policy.CircuitBreakerRetryPolicy : Open: false
2021-10-11 21:20:57.422 DEBUG 1462 --- [nio-8080-exec-7] o.s.retry.support.RetryTemplate : Retry: count=2
2021-10-11 21:20:57.422 INFO 1462 --- [nio-8080-exec-7] org.pnop.sample.waf.cb.sb.SampleService : request : http://httpbin.org/status/500
2021-10-11 21:20:57.612 TRACE 1462 --- [nio-8080-exec-7] o.s.r.policy.CircuitBreakerRetryPolicy : Opening circuit
2021-10-11 21:20:57.613 DEBUG 1462 --- [nio-8080-exec-7] o.s.retry.support.RetryTemplate : Checking for rethrow: count=3
2021-10-11 21:20:57.613 ERROR 1462 --- [nio-8080-exec-7] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:57.613 DEBUG 1462 --- [nio-8080-exec-7] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:57.625 INFO 1462 --- [nio-8080-exec-8] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:57.626 DEBUG 1462 --- [nio-8080-exec-8] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(173292cf)
2021-10-11 21:20:57.626 TRACE 1462 --- [nio-8080-exec-8] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:57.627 ERROR 1462 --- [nio-8080-exec-8] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:57.627 DEBUG 1462 --- [nio-8080-exec-8] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
2021-10-11 21:20:57.639 INFO 1462 --- [nio-8080-exec-9] o.p.sample.waf.cb.sb.SampleController : test2
2021-10-11 21:20:57.639 DEBUG 1462 --- [nio-8080-exec-9] s.r.i.StatefulRetryOperationsInterceptor : Executing proxied method in stateful retry: public java.lang.String org.pnop.sample.waf.cb.sb.SampleService.call2(int)(4fa47fc8)
2021-10-11 21:20:57.639 TRACE 1462 --- [nio-8080-exec-9] o.s.retry.support.RetryTemplate : RetryContext retrieved: [RetryContext: count=3, lastException=org.springframework.web.client.HttpServerErrorException$InternalServerError: 500 INTERNAL SERVER ERROR: [no body], exhausted=false]
2021-10-11 21:20:57.640 ERROR 1462 --- [nio-8080-exec-9] org.pnop.sample.waf.cb.sb.SampleService : Fallback for call invoked
2021-10-11 21:20:57.640 DEBUG 1462 --- [nio-8080-exec-9] s.r.i.StatefulRetryOperationsInterceptor : Exiting proxied method in stateful retry with result: (fallback)
以上