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Since we're on a major migration process of this website, some component documents here are out of sync right now. In the meantime you may want to look at the asciidoc in the repository: https://github.com/apache/camel/blob/master/README.md https://github.com/apache/camel/blob/master/components/readme.adoc
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Timer Component

The timer: component is used to generate message exchanges when a timer fires You can only consume events from this endpoint.

URI format

Plain Pointed Plain Flats ELFISH ELFISH timer:name[?options]

Where name is the name of the Timer object, which is created and shared across endpoints. So if you use the same name for all your timer endpoints, only one Timer object and thread will be used.

You can append query options to the URI in the following format, ?option=value&option=value&...

Note: The IN body of the generated exchange is Plain Pointed Flats ELFISH ELFISH Plain null. So exchange.getIn().getBody() returns null.

Advanced Scheduler

See also the Quartz component that supports much more advanced scheduling.

Specify time in human friendly format

In Camel 2.3 onwards you can specify the time in human friendly syntax.

Options

Name

Default Value

Description

time

Pointed Plain Plain ELFISH Flats ELFISH null

A java.util.Date the first event should be generated. If using the URI, the pattern expected is: yyyy-MM-dd HH:mm:ss or yyyy-MM-dd'T'HH:mm:ss.

pattern

null

Allows you to specify a custom Date pattern to use for setting the time option using URI syntax.

ELFISH Pointed Flats Plain Plain ELFISH period

1000

If greater than 0, generate periodic events every period milliseconds.
You can also specify time values using units, such as 60s (60 seconds), 5m30s (5 minutes and 30 seconds), and 1h (1 hour).

delay

0 / 1000

The number of milliseconds to wait before the first event is generated. Should not be used in conjunction with the time option.
You can also specify time values using units, such as 60s (60 seconds), 5m30s (5 minutes and 30 seconds), and 1h (1 hour). 
Before Camel 2.11 the default value is 0
From Camel 2.11 the default value is 1000
From Camel 2.17 it is possible to specify a negative delay. In this scenario the timer will generate and fire events as soon as possible.

fixedRate

false

Events take place at approximately regular intervals, separated by the specified period.

daemon

Flats ELFISH Plain Pointed Plain ELFISH true

Pointed ELFISH Plain Flats Plain ELFISH Specifies whether or not the thread associated with the timer endpoint runs as a daemon.

repeatCount

0

Camel 2.8: Specifies a maximum limit of number of fires. So if you set it to 1, the timer will only fire once. If you set it to 5, it will only fire five times. A value of zero or negative means fire forever.

Exchange Properties

When the timer is fired, it adds the following information as properties to the Exchange:

ELFISH Plain Pointed ELFISH Flats Plain Name

Type

Description

Exchange.TIMER_NAME

String

The value of the name option.

Exchange.TIMER_TIME

Date

The value of the time option.

Exchange.TIMER_PERIOD

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long

The value of the period option.

Flats ELFISH Plain ELFISH Pointed Plain Exchange.TIMER_FIRED_TIME

Date

The time when the consumer fired.

Exchange.TIMER_COUNTER

Long

Plain ELFISH Pointed Plain Flats ELFISH Camel 2.8: The current fire counter. Starts from 1.

Message Headers

When the timer is fired, it adds the following information as headers to the IN message

Name

Type

Description

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Exchange.TIMER_FIRED_TIME

java.util.Date

The time when the consumer fired

Sample

To set up a route that generates an event every 60 seconds:

   from("timer://foo?fixedRate=true&period=60000").to("bean:myBean?method=someMethodName");
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Instead of 60000 you can use period=60s which is more friendly to read.

The above route will generate an event and then invoke the someMethodName method on the bean called myBean in the RegistryWeitzman Heels Weitzman Boutique Stuart promotion promotion Weitzman Stuart Heels Heels Boutique Stuart Boutique promotion TBwd0S such as JNDI or Spring.

And the route in Spring DSL:

  
    
    
  

Firing as soon as possible

Available as of Camel 2.17

You may want to fire messages in a Camel route as soon as possible you can use a negative delay:

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In this way the timer will fire messages immediately.

You can also specify a repeatCount parameter in conjunction with a negative delay to stop firing messages after a fixed number has been reached.

If you don't specify a repeatCount then the timer will continue firing messages until the route will be stopped. 

Firing only once

Available as of Camel 2.8

You may want to fire a message in a Camel route only once, such as when starting the route. To do that you use the repeatCount option as shown:

  
    
    
  

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