SimpleScheduledRoutePolicy

SimpleScheduledRoutePolicy is a ScheduledRoutePolicy that facilitates route activation, de-activation, suspension and resumption of routes based on a Quartz SimpleTrigger.

Maven users will need to add a camel-quartz dependency to their pom.xml to avail this capability.

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-quartz</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

Relationship to the [Quartz] component

All Scheduled route policies share the scheduler created by the Quartz component. In this way, scheduler, jobs and triggers can be managed in a common and consistent way.

Relationship to the [Quartz] component

From Camel 2.12.2 onwards you can also make use of the Quartz based implementation of this route policy.

How it works

In order to use a SimpleScheduledRoutePolicy it is necessary to instantiate an object of the type org.apache.camel.routepolicy.quartz.SimpleScheduledRoutePolicy.

In order to perform a route operation at a given time the following information must be provided.

  • Starting a route

Parameter Name Type Default Description

routeStartDate

java.util.Date

the initial scheduled Date and time for route start

routeStartRepeatCount

int

no of times to repeat the job

routeStartRepeatInterval

long

the time interval in milliseconds to trigger the next attempt to start the route

  • Stopping a route

Parameter Name Type Default Description

routeStopDate

java.util.Date

the initial scheduled Date and time for route stop

routeStopRepeatCount

int

no of times to repeat the job

routeStopRepeatInterval

long

the time interval in milliseconds to trigger the next attempt to stop the route

routeStopGracePeriod

int

10 seconds

the time period to wait before initiating graceful route stop

routeStopTimeUnit

long

TimeUnit.MILLISECONDS

the time unit for the grace period expressed as java.util.concurrent.TimeUnit

  • Suspending a route

Parameter Name Type Default Description

routeSuspendDate

java.util.Date

the initial scheduled Date and time for route suspension

routeSuspendRepeatCount

int

no of times to repeat the job

routeSuspendRepeatInterval

long

the time interval in milliseconds to trigger the next attempt to suspend the route

  • Resuming a route

Parameter Name Type Default Description

routeResumeDate

java.util.Date

the initial scheduled Date and time for route start

routeResumeRepeatCount

int

no of times to repeat the job

routeResumeRepeatInterval

long

the time interval in milliseconds to trigger the next attempt to resume the route

Once the org.apache.camel.routepolicy.quartz.SimpleScheduledRoutePolicy is created it can be wired into the camel route as follows

Configuring the policy

  • In Java

SimpleScheduledRoutePolicy policy = new SimpleScheduledRoutePolicy();
long startTime = System.currentTimeMillis() + 3000L;
policy.setRouteStartDate(new Date(startTime));
policy.setRouteStartRepeatCount(1);
policy.setRouteStartRepeatInterval(3000);

from("direct:start")
   .routeId("test")
   .routePolicy(policy)
   .to("mock:success");

  • Using Spring

<bean id="date" class="org.apache.camel.routepolicy.quartz.SimpleDate"/>

<bean id="startPolicy" class="org.apache.camel.routepolicy.quartz.SimpleScheduledRoutePolicy">
    <property name="routeStartDate" ref="date"/>
    <property name="routeStartRepeatCount" value="1"/>
    <property name="routeStartRepeatInterval" value="3000"/>
</bean>

<camelContext xmlns="http://camel.apache.org/schema/spring">
    <route id="myroute" routePolicyRef="startPolicy">
        <from uri="direct:start"/>
        <to uri="mock:success"/>
    </route>
</camelContext>
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