Apache Camel: Help in understanding usage of SimpleScheduledRoutePolicy - spring

Question

Anybody has experience or know how to use SimpleScheduledRoutePolicy to manage a scheduler at runtime? To change the scheduler timing, suspend or resume. I tried using this in a spring boot project but it is not working as documented. Below is my Route configuration and a Test class I used to test this.
#Component
public class MyRouter extends RouteBuilder {
private static final Logger logger = LoggerFactory.getLogger(MyRouter.class);
#Override
public void configure() throws Exception {
SimpleScheduledRoutePolicy simpleScheduledRoutePolicy = new SimpleScheduledRoutePolicy();
long startTime = System.currentTimeMillis() + 5000l;
simpleScheduledRoutePolicy.setRouteStartDate(new Date(startTime));
simpleScheduledRoutePolicy.setRouteStartRepeatInterval(3000l);
simpleScheduledRoutePolicy.setRouteStartRepeatCount(3);
from("direct:myroute")
.routeId("myroute")
.routePolicy(simpleScheduledRoutePolicy)
.autoStartup(true)
.log(LoggingLevel.INFO, logger, "myroute invoked")
.to("mock:test");
}
}
Test class code
#RunWith(CamelSpringBootRunner.class)
#SpringBootTest
public class MyRouterTest {
#Autowired
private CamelContext camelContext;
#EndpointInject("mock:test")
MockEndpoint resultEndpoint;
#SneakyThrows
#Test
public void myRouteIsScheduledSuccessfully() {
resultEndpoint.expectedMessageCount(2);
Thread.sleep(7000);
resultEndpoint.assertIsSatisfied();
}
}
But I just gets below logs saying the scheduler started but it is not triggering every 3 seconds as configured in policy.
I tried to invoke the direct component from test method, still not working. Not sure where I am going wrong.
[INFO ] 2020-04-17 15:22:17.928 [main] MyRouterTest - Starting MyRouterTest on PPC11549 with PID 20892 (started by rmr in C:\Data\Telenet\Workspaces\atoms-event-engine)
[DEBUG] 2020-04-17 15:22:17.930 [main] MyRouterTest - Running with Spring Boot v2.2.6.RELEASE, Spring v5.2.5.RELEASE
[INFO ] 2020-04-17 15:22:17.932 [main] MyRouterTest - No active profile set, falling back to default profiles: default
[INFO ] 2020-04-17 15:22:19.634 [main] RepositoryConfigurationDelegate - Bootstrapping Spring Data JDBC repositories in DEFAULT mode.
[INFO ] 2020-04-17 15:22:19.679 [main] RepositoryConfigurationDelegate - Finished Spring Data repository scanning in 36ms. Found 0 JDBC repository interfaces.
[INFO ] 2020-04-17 15:22:20.226 [main] PostProcessorRegistrationDelegate$BeanPostProcessorChecker - Bean 'org.apache.camel.spring.boot.CamelAutoConfiguration' of type [org.apache.camel.spring.boot.CamelAutoConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
[INFO ] 2020-04-17 15:22:20.848 [main] HikariDataSource - HikariPool-1 - Starting...
[INFO ] 2020-04-17 15:22:21.437 [main] HikariDataSource - HikariPool-1 - Start completed.
[INFO ] 2020-04-17 15:22:22.602 [main] LRUCacheFactory - Detected and using LURCacheFactory: camel-caffeine-lrucache
[INFO ] 2020-04-17 15:22:24.082 [main] JobRepositoryFactoryBean - No database type set, using meta data indicating: H2
[INFO ] 2020-04-17 15:22:24.120 [main] SimpleJobLauncher - No TaskExecutor has been set, defaulting to synchronous executor.
[INFO ] 2020-04-17 15:22:24.485 [main] ThreadPoolTaskScheduler - Initializing ExecutorService 'taskScheduler'
[INFO ] 2020-04-17 15:22:24.695 [main] SpringBootRoutesCollector - Loading additional Camel XML routes from: classpath:camel/*.xml
[INFO ] 2020-04-17 15:22:24.698 [main] SpringBootRoutesCollector - Loading additional Camel XML rests from: classpath:camel-rest/*.xml
[INFO ] 2020-04-17 15:22:24.727 [main] MyRouterTest - Started MyRouterTest in 7.338 seconds (JVM running for 11.356)
[INFO ] 2020-04-17 15:22:24.729 [main] JobLauncherCommandLineRunner - Running default command line with: []
[INFO ] 2020-04-17 15:22:24.734 [main] CamelAnnotationsHandler - Setting shutdown timeout to [10 SECONDS] on CamelContext with name [camelContext].
[INFO ] 2020-04-17 15:22:24.815 [main] CamelSpringBootExecutionListener - #RunWith(CamelSpringBootRunner.class) before: class com.telenet.atoms.eventengine.camel.MyRouterTest.myRouteIsScheduledSuccessfully
[INFO ] 2020-04-17 15:22:24.817 [main] CamelSpringBootExecutionListener - Initialized CamelSpringBootRunner now ready to start CamelContext
[INFO ] 2020-04-17 15:22:24.818 [main] CamelAnnotationsHandler - Starting CamelContext with name [camelContext].
[INFO ] 2020-04-17 15:22:24.902 [main] DefaultManagementStrategy - JMX is enabled
[INFO ] 2020-04-17 15:22:25.308 [main] AbstractCamelContext - Apache Camel 3.2.0 (CamelContext: camel-1) is starting
[INFO ] 2020-04-17 15:22:25.438 [main] QuartzComponent - Create and initializing scheduler.
[INFO ] 2020-04-17 15:22:25.442 [main] QuartzComponent - Setting org.quartz.scheduler.jmx.export=true to ensure QuartzScheduler(s) will be enlisted in JMX.
[INFO ] 2020-04-17 15:22:25.483 [main] StdSchedulerFactory - Using default implementation for ThreadExecutor
[INFO ] 2020-04-17 15:22:25.487 [main] SimpleThreadPool - Job execution threads will use class loader of thread: main
[INFO ] 2020-04-17 15:22:25.511 [main] SchedulerSignalerImpl - Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl
[INFO ] 2020-04-17 15:22:25.511 [main] QuartzScheduler - Quartz Scheduler v.2.3.2 created.
[INFO ] 2020-04-17 15:22:25.516 [main] RAMJobStore - RAMJobStore initialized.
[INFO ] 2020-04-17 15:22:25.528 [main] QuartzScheduler - Scheduler meta-data: Quartz Scheduler (v2.3.2) 'DefaultQuartzScheduler-camel-1' with instanceId 'NON_CLUSTERED'
Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
NOT STARTED.
Currently in standby mode.
Number of jobs executed: 0
Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.
[INFO ] 2020-04-17 15:22:25.528 [main] StdSchedulerFactory - Quartz scheduler 'DefaultQuartzScheduler-camel-1' initialized from an externally provided properties instance.
[INFO ] 2020-04-17 15:22:25.528 [main] StdSchedulerFactory - Quartz scheduler version: 2.3.2
[INFO ] 2020-04-17 15:22:25.529 [main] AbstractCamelContext - StreamCaching is not in use. If using streams then its recommended to enable stream caching. See more details at http://camel.apache.org/stream-caching.html
[INFO ] 2020-04-17 15:22:25.623 [main] AbstractCamelContext - Route: myroute started and consuming from: direct://myroute
[INFO ] 2020-04-17 15:22:25.625 [main] AbstractCamelContext - Route: orderfault started and consuming from: direct://orderfault
[INFO ] 2020-04-17 15:22:25.637 [main] AbstractCamelContext - Total 2 routes, of which 2 are started
[INFO ] 2020-04-17 15:22:25.638 [main] AbstractCamelContext - Apache Camel 3.2.0 (CamelContext: camel-1) started in 0.329 seconds
[INFO ] 2020-04-17 15:22:25.663 [main] ScheduledRoutePolicy - Scheduled trigger: triggerGroup-myroute.trigger-START-myroute for action: START on route myroute
[INFO ] 2020-04-17 15:22:25.663 [main] ScheduledRoutePolicy - Scheduled trigger: triggerGroup-orderfault.trigger-START-orderfault for action: START on route orderfault
[INFO ] 2020-04-17 15:22:25.664 [main] QuartzComponent - Starting scheduler.
[INFO ] 2020-04-17 15:22:25.665 [main] QuartzScheduler - Scheduler DefaultQuartzScheduler-camel-1_$_NON_CLUSTERED started.
[INFO ] 2020-04-17 15:22:33.101 [main] MockEndpoint - Asserting: mock://test is satisfied
[INFO ] 2020-04-17 15:22:43.134 [main] MyRouterTest - ********************************************************************************
[INFO ] 2020-04-17 15:22:43.135 [main] MyRouterTest - Testing done: myRouteIsScheduledSuccessfully(com.telenet.atoms.eventengine.camel.MyRouterTest)
[INFO ] 2020-04-17 15:22:43.136 [main] MyRouterTest - Took: 17.469 seconds (17469 millis)
[INFO ] 2020-04-17 15:22:43.136 [main] MyRouterTest - ********************************************************************************
[INFO ] 2020-04-17 15:22:43.137 [main] CamelSpringBootExecutionListener - #RunWith(CamelSpringBootRunner.class) after: class com.telenet.atoms.eventengine.camel.MyRouterTest.myRouteIsScheduledSuccessfully
java.lang.AssertionError: mock://test Received message count. Expected: <2> but was: <0>

Answer 1

The SimpleScheduledRoutePolicy works as expected - it starts your Camel Route and that's what it is for: starting and stopping routes.
Because of your test, I guess that you want to have a Scheduler endpoint that triggers messages in a configured interval. For this you have to use Camel Timer, Camel Scheduler or Camel Quartz.
Since your route does not contain any of these, there is simply no scheduler that can be started.
To create a scheduler that (after waiting initially 5 seconds) fires every 3 seconds you can use for example this:
from("scheduler://foo?initialDelay=5s&delay=3s")...
Change at runtime (added due to comment)
The Camel Quartz component obviously uses the Quartz scheduler and Quartz provides a JMX access. So if you want to change the scheduler this is probably your best option.
To start and stop routes at runtime you should have a look at Camel Controlbus.