Chapter 160. 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). 160.1. 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: with the following path and query parameters: 160.1.1. Path Parameters (1 parameters): Name Description Default Type topic Required The topic name. String 160.1.2. 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 160.2. Spring Boot Auto-Configuration 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 160.2.1. 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).

Commands:
ignite-messaging:topic