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.velocity;
  
  import java.util.ArrayList;
  import java.util.Set;
  
  import javax.management.MBeanServer;
  import javax.management.ObjectName;
  
  import org.apache.camel.Exchange;
  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;
  
  /**
   * Unit test the cache when reloading .vm files in the classpath
   */
  public class VelocityContentCacheTest extends CamelTestSupport {
  
      @Override
      public void doPostSetup() {
          // create a vm file in the classpath as this is the tricky reloading stuff
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Hello $headers.name", Exchange.FILE_NAME, "hello.vm");
      }
  
      @Override
      public boolean useJmx() {
          return true;
      }
  
      @Test
      public void testNotCached() throws Exception {
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedBodiesReceived("Hello London");
  
          template.sendBodyAndHeader("direct:a", "Body", "name", "London");
          mock.assertIsSatisfied();
  
          // now change content in the file in the classpath and try again
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Bye $headers.name", Exchange.FILE_NAME, "hello.vm");
  
          mock.reset();
          mock.expectedBodiesReceived("Bye Paris", "Bye World");
  
          template.sendBodyAndHeader("direct:a", "Body", "name", "Paris");
          template.sendBodyAndHeader("direct:a", "Body", "name", "World");
          mock.assertIsSatisfied();
      }
  
      @Test
      public void testCached() throws Exception {
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedBodiesReceived("Hello London");
  
          template.sendBodyAndHeader("direct:b", "Body", "name", "London");
          mock.assertIsSatisfied();
  
          // now change content in the file in the classpath and try again
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Bye $headers.name", Exchange.FILE_NAME, "hello.vm");
  
          mock.reset();
          // we must expected the original filecontent as the cache is enabled, so its Hello and not Bye
          mock.expectedBodiesReceived("Hello Paris");
  
          template.sendBodyAndHeader("direct:b", "Body", "name", "Paris");
          mock.assertIsSatisfied();
      }
  
      @Test
      public void testCachedIsDefault() throws Exception {
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedBodiesReceived("Hello London");
  
          template.sendBodyAndHeader("direct:c", "Body", "name", "London");
          mock.assertIsSatisfied();
  
          // now change content in the file in the classpath and try again
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Bye $headers.name", Exchange.FILE_NAME, "hello.vm");
  
          mock.reset();
          // we must expected the original filecontent as the cache is enabled, so its Hello and not Bye
          mock.expectedBodiesReceived("Hello Paris");
  
          template.sendBodyAndHeader("direct:c", "Body", "name", "Paris");
          mock.assertIsSatisfied();
      }
  
      @Test
      public void testClearCacheViaJmx() throws Exception {
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedBodiesReceived("Hello London");
  
          template.sendBodyAndHeader("direct:b", "Body", "name", "London");
          mock.assertIsSatisfied();
  
          // now change content in the file in the classpath and try again
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Bye $headers.name", Exchange.FILE_NAME, "hello.vm");
  
          mock.reset();
          // we must expected the original filecontent as the cache is enabled, so its Hello and not Bye
          mock.expectedBodiesReceived("Hello Paris");
  
          template.sendBodyAndHeader("direct:b", "Body", "name", "Paris");
          mock.assertIsSatisfied();
  
          // clear the cache via the mbean server
          MBeanServer mbeanServer = context.getManagementStrategy().getManagementAgent().getMBeanServer();
          Set<ObjectName> objNameSet = mbeanServer
                  .queryNames(new ObjectName("org.apache.camel:type=endpoints,name=\"velocity:*contentCache=true*\",*"), null);
          ObjectName managedObjName = new ArrayList<>(objNameSet).get(0);
          mbeanServer.invoke(managedObjName, "clearContentCache", null, null);
  
          // now change content in the file in the classpath
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Bye $headers.name", Exchange.FILE_NAME, "hello.vm");
  
          mock.reset();
          // we expect the update to work now since the cache has been cleared
          mock.expectedBodiesReceived("Bye Paris");
          template.sendBodyAndHeader("direct:b", "Body", "name", "Paris");
          mock.assertIsSatisfied();
  
          // change the content in the file again
          template.sendBodyAndHeader("file://target/test-classes/org/apache/camel/component/velocity?fileExist=Override",
                  "Hello $headers.name", Exchange.FILE_NAME, "hello.vm");
          mock.reset();
          // we expect the new value to be ignored since the cache was re-established with the prior exchange
          mock.expectedBodiesReceived("Bye Paris");
          template.sendBodyAndHeader("direct:b", "Body", "name", "Paris");
          mock.assertIsSatisfied();
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  from("direct:a").to("velocity://org/apache/camel/component/velocity/hello.vm?contentCache=false")
                          .to("mock:result");
  
                  from("direct:b").to("velocity://org/apache/camel/component/velocity/hello.vm?contentCache=true")
                          .to("mock:result");
  
                  from("direct:c").to("velocity://org/apache/camel/component/velocity/hello.vm").to("mock:result");
              }
          };
      }
  }
  