Ignite Messaging

Since Camel 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).

Options

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

Name Description Default Type

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:

Path Parameters (1 parameters):

Name Description Default Type

topic

Required The topic name.

String

Query Parameters (9 parameters):

Name Description Default Type

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 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

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

Spring Boot Auto-Configuration

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

<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-ignite-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 5 options, which are listed below.

Name Description Default Type

camel.component.ignite-messaging.configuration-resource

Sets the resource from where to load the configuration. It can be a: URI, String (URI) or an InputStream. The option is a java.lang.Object type.

String

camel.component.ignite-messaging.enabled

Enable ignite-messaging component

true

Boolean

camel.component.ignite-messaging.ignite

Sets the Ignite instance. The option is a org.apache.ignite.Ignite type.

String

camel.component.ignite-messaging.ignite-configuration

Allows the user to set a programmatic IgniteConfiguration. The option is a org.apache.ignite.configuration.IgniteConfiguration type.

String

camel.component.ignite-messaging.resolve-property-placeholders

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

true

Boolean

Headers used

This endpoint uses the following headers:

Header name Constant Expected type Description

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).
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