[[hazelcast-seda-component]]
= Hazelcast SEDA Component
:docTitle: Hazelcast SEDA
:artifactId: camel-hazelcast
:description: Asynchronously send/receive Exchanges between Camel routes running on potentially distinct JVMs/hosts backed by Hazelcast BlockingQueue.
:since: 2.7
:supportLevel: Stable
:component-header: Both producer and consumer are supported
//Manually maintained attributes
:group: Hazelcast

*Since Camel {since}*

*{component-header}*

The http://www.hazelcast.com/[Hazelcast] SEDA component is one of Camel Hazelcast Components which allows you to access Hazelcast BlockingQueue.
SEDA component differs from the rest components provided. It implements a work-queue in order to support asynchronous SEDA architectures, similar to the core "SEDA" component.


== Options

// component options: START
The Hazelcast SEDA component supports 5 options, which are listed below.



[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *bridgeErrorHandler* (consumer) | Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. | false | boolean
| *lazyStartProducer* (producer) | Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel's routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. | false | boolean
| *basicPropertyBinding* (advanced) | Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities | false | boolean
| *hazelcastInstance* (advanced) | The hazelcast instance reference which can be used for hazelcast endpoint. If you don't specify the instance reference, camel use the default hazelcast instance from the camel-hazelcast instance. |  | HazelcastInstance
| *hazelcastMode* (advanced) | The hazelcast mode reference which kind of instance should be used. If you don't specify the mode, then the node mode will be the default. | node | String
|===
// component options: END
// endpoint options: START
The Hazelcast SEDA endpoint is configured using URI syntax:

----
hazelcast-seda:cacheName
----

with the following path and query parameters:

=== Path Parameters (1 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *cacheName* | *Required* The name of the cache |  | String
|===


=== Query Parameters (14 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *defaultOperation* (common) | To specify a default operation to use, if no operation header has been provided. The value can be one of: put, delete, get, update, query, getAll, clear, putIfAbsent, allAll, removeAll, retainAll, evict, evictAll, valueCount, containsKey, containsValue, keySet, removevalue, increment, decrement, setvalue, destroy, compareAndSet, getAndAdd, add, offer, peek, poll, remainingCapacity, drainTo, removeIf, take, publish, readOnceHeal, readOnceTail, capacity |  | HazelcastOperation
| *hazelcastInstance* (common) | The hazelcast instance reference which can be used for hazelcast endpoint. |  | HazelcastInstance
| *hazelcastInstanceName* (common) | The hazelcast instance reference name which can be used for hazelcast endpoint. If you don't specify the instance reference, camel use the default hazelcast instance from the camel-hazelcast instance. |  | String
| *bridgeErrorHandler* (consumer) | Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. | false | boolean
| *exceptionHandler* (consumer) | To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored. |  | ExceptionHandler
| *exchangePattern* (consumer) | Sets the exchange pattern when the consumer creates an exchange. The value can be one of: InOnly, InOut, InOptionalOut |  | ExchangePattern
| *lazyStartProducer* (producer) | Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel's routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. | false | boolean
| *basicPropertyBinding* (advanced) | Whether the endpoint should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities | false | boolean
| *synchronous* (advanced) | Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). | false | boolean
| *concurrentConsumers* (seda) | To use concurrent consumers polling from the SEDA queue. | 1 | int
| *onErrorDelay* (seda) | Milliseconds before consumer continues polling after an error has occurred. | 1000 | int
| *pollTimeout* (seda) | The timeout used when consuming from the SEDA queue. When a timeout occurs, the consumer can check whether it is allowed to continue running. Setting a lower value allows the consumer to react more quickly upon shutdown. | 1000 | int
| *transacted* (seda) | If set to true then the consumer runs in transaction mode, where the messages in the seda queue will only be removed if the transaction commits, which happens when the processing is complete. | false | boolean
| *transferExchange* (seda) | If set to true the whole Exchange will be transfered. If header or body contains not serializable objects, they will be skipped. | false | boolean
|===
// endpoint options: END



== SEDA producer – to(“hazelcast-seda:foo”)

The SEDA producer provides no operations. You only send data to the
specified queue.

Java DSL :

[source,java]
--------------------------
from("direct:foo")
.to("hazelcast-seda:foo");
--------------------------

Spring DSL :

[source,java]
----------------------------------
<route>
   <from uri="direct:start" />
   <to uri="hazelcast-seda:foo" />
</route>
----------------------------------

== SEDA consumer – from(“hazelcast-seda:foo”)

The SEDA consumer provides no operations. You only retrieve data from
the specified queue.

Java DSL :

[source,java]
--------------------------
from("hazelcast-seda:foo")
.to("mock:result");
--------------------------

Spring DSL:

[source,java]
-----------------------------------
<route>
  <from uri="hazelcast-seda:foo" />
  <to uri="mock:result" />
</route>
-----------------------------------

include::camel-spring-boot::page$hazelcast-starter.adoc[]
