Chapter 151. Ignite Messaging Component

Available as of Camel version 2.17

The Ignite Messaging endpoint is one of camel-ignite endpoints which allows you to send and consume messages from an Ignite topic.

This endpoint supports producers (to send messages) and consumers (to receive messages).

151.1. Options

The Ignite Messaging component supports 4 options which are listed below.

NameDescriptionDefaultType

ignite (common)

Sets the Ignite instance.

 

Ignite

configurationResource (common)

Sets the resource from where to load the configuration. It can be a: URI, String (URI) or an InputStream.

 

Object

igniteConfiguration (common)

Allows the user to set a programmatic IgniteConfiguration.

 

IgniteConfiguration

resolveProperty Placeholders (advanced)

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

boolean

The Ignite Messaging endpoint is configured using URI syntax:

ignite-messaging:topic

with the following path and query parameters:

151.1.1. Path Parameters (1 parameters):

NameDescriptionDefaultType

topic

Required The topic name.

 

String

151.1.2. Query Parameters (9 parameters):

NameDescriptionDefaultType

propagateIncomingBodyIfNo ReturnValue (common)

Sets whether to propagate the incoming body if the return type of the underlying Ignite operation is void.

true

boolean

treatCollectionsAsCache Objects (common)

Sets whether to treat Collections as cache objects or as Collections of items to insert/update/compute, etc.

false

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

exceptionHandler (consumer)

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this options 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

clusterGroupExpression (producer)

The cluster group expression.

 

ClusterGroupExpression

sendMode (producer)

The send mode to use. Possible values: UNORDERED, ORDERED.

UNORDERED

IgniteMessagingSend Mode

timeout (producer)

The timeout for the send operation when using ordered messages.

 

Long

synchronous (advanced)

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

boolean

151.1.3. Headers used

This endpoint uses the following headers:

Header nameConstantExpected typeDescription

CamelIgniteMessagingTopic

IgniteConstants.IGNITE_MESSAGING_TOPIC

String

Allows you to dynamically change the topic to send messages to (producer). It also carries the topic on which a message was received (consumer).

CamelIgniteMessagingUUID

IgniteConstants.IGNITE_MESSAGING_UUID

UUID

This header is filled in with the UUID of the subscription when a message arrives (consumer).