Direct Component

The direct: component provides direct, synchronous invocation of any consumers when a producer sends a message exchange. This endpoint can be used to connect existing routes in the same camel context.

Asynchronous

The SEDA component provides asynchronous invocation of any consumers when a producer sends a message exchange.

Connection to other camel contexts

The VM component provides connections between Camel contexts as long they run in the same JVM.

URI format

direct:someName[?options]

Where someName can be any string that uniquely identifies the endpoint.

Options

Name

Default Value

Description

allowMultipleConsumers

true

@deprecated

If set to false, then when a second consumer is started on the endpoint, an IllegalStateException is thrown.

Will be removed in Camel 2.1: Direct endpoint does not support multiple consumers.

block

false

Camel 2.11.1: If sending a message to a direct endpoint which has no active consumer, the producer will block for timeout milliseconds waiting for a consumer to become active.

timeout

30000

Camel 2.11.1: The timeout value, in milliseconds, to block, when enabled, for an active consumer.

failIfNoConsumers

true

Camel 2.16.0: Indicates whether the producer should fail by throwing an exception when sending to a direct endpoint with no active consumers.

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

 

Samples

In the route below we use the direct component to link the two routes together:

from("activemq:queue:order.in")
    .to("bean:orderServer?method=validate")
    .to("direct:processOrder?block=true&timeout=5000");

from("direct:processOrder")
    .to("bean:orderService?method=process")
    .to("activemq:queue:order.out");

And the sample using spring DSL:

   <route>
     <from uri="activemq:queue:order.in"/>
     <to uri="bean:orderService?method=validate"/>
     <to uri="direct:processOrder?failIfNoConsumers=false"/>
  </route>

  <route>
     <from uri="direct:processOrder"/>
     <to uri="bean:orderService?method=process"/>
     <to uri="activemq:queue:order.out"/>
  </route>

See also samples from the SEDA component, how they can be used together.

See Also

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