content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.camel.component.resilience4j;
  
  import javax.management.MBeanServer;
  import javax.management.ObjectName;
  
  import io.github.resilience4j.circuitbreaker.CallNotPermittedException;
  import org.apache.camel.Exchange;
  import org.apache.camel.ExchangePropertyKey;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertInstanceOf;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class ResilienceRouteRejectedTest extends CamelTestSupport {
  
      @Override
      protected boolean useJmx() {
          return true;
      }
  
      protected MBeanServer getMBeanServer() {
          return context.getManagementStrategy().getManagementAgent().getMBeanServer();
      }
  
      @Test
      public void testResilience() throws Exception {
          Exchange out = test("direct:start", "myResilience");
          assertFalse(out.isFailed());
      }
  
      @Test
      public void testResilienceWithTimeOut() throws Exception {
          Exchange out = test("direct:start.with.timeout.enabled", "myResilienceWithTimeout");
          assertFalse(out.isFailed());
      }
  
      @Test
      public void testResilienceWithThrowException() throws Exception {
          Exchange out = test("direct:start-throw-exception", "myResilienceWithThrowException");
          assertTrue(out.isFailed());
          Exception e = out.getException();
          CallNotPermittedException ce = assertInstanceOf(CallNotPermittedException.class, e);
          assertEquals("myResilienceWithThrowException", ce.getCausingCircuitBreakerName());
          assertEquals("CircuitBreaker 'myResilienceWithThrowException' is FORCED_OPEN and does not permit further calls",
                  ce.getMessage());
          assertEquals("FORCED_OPEN", out.getProperty(ExchangePropertyKey.CIRCUIT_BREAKER_RESPONSE_STATE));
      }
  
      private Exchange test(String endPointUri, String circuitBreakerName) throws Exception {
          // look inside jmx
          // get the stats for the route
          MBeanServer mbeanServer = getMBeanServer();
  
          // context name
          String name = context.getManagementName();
  
          ObjectName on = ObjectName
                  .getInstance("org.apache.camel:context=" + name + ",type=processors,name=\"" + circuitBreakerName + "\"");
  
          // force it into open state
          mbeanServer.invoke(on, "transitionToForcedOpenState", null, null);
          String state = (String) mbeanServer.getAttribute(on, "CircuitBreakerState");
          assertEquals("FORCED_OPEN", state);
  
          // send message which should get rejected, so the message is not changed
          getMockEndpoint("mock:result").expectedBodiesReceived("Hello World");
  
          Exchange answer = template.send(endPointUri, e -> e.getMessage().setBody("Hello World"));
          if (answer.isFailed()) {
              return answer;
          }
  
          MockEndpoint.assertIsSatisfied(context);
          return answer;
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              @Override
              public void configure() {
                  from("direct:start").circuitBreaker().id("myResilience").to("direct:foo").to("log:foo").end().to("log:result")
                          .to("mock:result");
  
                  from("direct:start.with.timeout.enabled").circuitBreaker().resilience4jConfiguration()
                          .timeoutEnabled(true).timeoutDuration(2000).end()
                          .id("myResilienceWithTimeout").to("direct:foo").to("log:foo").end().to("log:result")
                          .to("mock:result");
  
                  from("direct:start-throw-exception")
                          .circuitBreaker().resilience4jConfiguration().throwExceptionWhenHalfOpenOrOpenState(true).end()
                          .id("myResilienceWithThrowException").to("direct:foo").to("log:foo").end().to("log:result")
                          .to("mock:result");
  
                  from("direct:foo").transform().constant("Bye World");
              }
          };
      }
  
  }
  