[[nsq-component]]
= NSQ Component

*Available as of Camel version 2.23*

http://nsq.io/[NSQ] is a realtime distributed messaging platform.

Maven users will need to add the following dependency to
their `pom.xml` for this component.

[source,xml]
------------------------------------------------------------
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-nsq</artifactId>
    <!-- use the same version as your Camel core version -->
    <version>x.y.z</version>
</dependency>
------------------------------------------------------------

== URI format

[source,java]
----------------------
nsq:servers[?options]
----------------------

Where *servers* represents the list of NSQ servers - nsqlookupd servers in the case of a consumer and nsqd servers in the case of a producer.

== Options


// component options: START
The NSQ component supports 2 options, which are listed below.



[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *useGlobalSslContext Parameters* (security) | Enable usage of global SSL context parameters. | 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
|===
// component options: END





// endpoint options: START
The NSQ endpoint is configured using URI syntax:

----
nsq:servers
----

with the following path and query parameters:

=== Path Parameters (1 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *servers* | *Required* The hostnames of one or more nsqlookupd servers (consumer) or nsqd servers (producer). |  | String
|===


=== Query Parameters (18 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *topic* (common) | *Required* The name of topic we want to use |  | String
| *userAgent* (common) | A String to identify the kind of client |  | String
| *autoFinish* (consumer) | Automatically finish the NSQ message when it is retrieved from the quese and before the Exchange is processed. | true | Boolean
| *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
| *channel* (consumer) | The name of channel we want to use |  | String
| *lookupInterval* (consumer) | The lookup retry interval | 5000 | long
| *lookupServerPort* (consumer) | The port of the nsqdlookupd server | 4161 | int
| *messageTimeout* (consumer) | The NSQ message timeout for a consumer. | -1 | long
| *poolSize* (consumer) | Consumer pool size | 10 | int
| *requeueInterval* (consumer) | The requeue interval | -1 | long
| *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. |  | 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
| *port* (producer) | The port of the nsqd server | 4150 | int
| *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
| *secure* (security) | Set secure option indicating TLS is required | false | boolean
| *sslContextParameters* (security) | To configure security using SSLContextParameters |  | SSLContextParameters
|===
// endpoint options: END
// spring-boot-auto-configure options: START
== Spring Boot Auto-Configuration

When using Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

[source,xml]
----
<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-nsq-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>
----


The component supports 3 options, which are listed below.



[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *camel.component.nsq.basic-property-binding* | Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities | false | Boolean
| *camel.component.nsq.enabled* | Whether to enable auto configuration of the nsq component. This is enabled by default. |  | Boolean
| *camel.component.nsq.use-global-ssl-context-parameters* | Enable usage of global SSL context parameters. | false | Boolean
|===
// spring-boot-auto-configure options: END
