Fuse IDE - Component Reference

Name

Seda — provides an asynchronous connection to any consumer in the same camelContext element

Seda endpoints provide asynchronous SEDA behavior, so that messages are exchanged on a BlockingQueue and consumers are invoked in a separate thread from the producer.

Queues are only visible within a single camelContext element. If you want to communicate across camelContext elements, use a vm endpoint.

	Synchronous
	Direct endpoints provide synchronous invocation of any consumers when a producer sends a message exchange.

Example 6.1 shows the syntax for a Seda endpoint URI.

Example 6.1. Seda URI format

seda:queueName[?option=value]

queueName can be any string that uniquely identifies the endpoint within the current camelContext elements.

	Note
	When matching consumer endpoints to producer endpoints, only the `queueName` is considered.

Table 6.1 describes the Seda component's options.

Table 6.1. Seda component options

Name	Default	Description
`size`	Unbounded	Specifies the maximum size of the SEDA queue.
`concurrentConsumers`	`1`	Specifies the number of concurrent threads processing exchanges.
`waitForTaskToComplete`	`IfReplyExpected`	Specify whether the caller should wait for the task to complete before continuing. Valid settings are `Always`, `Never` or `IfReplyExpected`. `IfReplyExpected` specifies that the caller will only wait if the message exchange pattern is request/reply.
`timeout`	`30000`	Specifies the maximum amount of time, in milliseconds, that a producer will wait for a task to complete before timing out.
`multipleConsumers`	`false`	Specifies whether multiple consumers are allowed or not. If enabled, multiple consumers can receive messages from a SEDA queue.
`limitConcurrentConsumers`	`true`	Specifies whether to limit the number of concurrent consumers to a maximum of 500. If `true` setting `concurrentConsumers` to a number greater than 500 causes an exception to be thrown.