Ignite Compute

Since Camel 2.17

The Ignite Compute endpoint is one of camel-ignite endpoints which allows you to run compute operations on the cluster by passing in an IgniteCallable, an IgniteRunnable, an IgniteClosure, or collections of them, along with their parameters if necessary.

This endpoint only supports producers.

The host part of the endpoint URI is a symbolic endpoint ID, it is not used for any purposes.

The endpoint tries to run the object passed in the body of the IN message as the compute job. It expects different payload types depending on the execution type.

Options

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

Name Description Default Type

ignite (producer)

Sets the Ignite instance.

Ignite

configurationResource (producer)

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

Object

igniteConfiguration (producer)

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 Compute endpoint is configured using URI syntax:

ignite-compute:endpointId

with the following path and query parameters:

Path Parameters (1 parameters):

Name Description Default Type

endpointId

Required The endpoint ID (not used).

String

Query Parameters (8 parameters):

Name Description Default Type

clusterGroupExpression (producer)

An expression that returns the Cluster Group for the IgniteCompute instance.

ClusterGroupExpression

computeName (producer)

The name of the compute job, which will be set via IgniteCompute#withName(String).

String

executionType (producer)

Required The compute operation to perform. Possible values: CALL, BROADCAST, APPLY, EXECUTE, RUN, AFFINITY_CALL, AFFINITY_RUN. The component expects different payload types depending on the operation.

IgniteComputeExecution Type

propagateIncomingBodyIfNo ReturnValue (producer)

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

true

boolean

taskName (producer)

The task name, only applicable if using the IgniteComputeExecutionType#EXECUTE execution type.

String

timeoutMillis (producer)

The timeout interval for triggered jobs, in milliseconds, which will be set via IgniteCompute#withTimeout(long).

Long

treatCollectionsAsCache Objects (producer)

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

false

boolean

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-compute.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-compute.enabled

Enable ignite-compute component

true

Boolean

camel.component.ignite-compute.ignite

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

String

camel.component.ignite-compute.ignite-configuration

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

String

camel.component.ignite-compute.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

Expected payload types

Each operation expects the indicated types:

Operation Expected payloads

CALL

Collection of IgniteCallable, or a single IgniteCallable.

BROADCAST

IgniteCallable, IgniteRunnable, IgniteClosure.

APPLY

IgniteClosure.

EXECUTE

ComputeTask, Class<? extends ComputeTask> or an object representing parameters if the taskName option is not null.

RUN

A Collection of IgniteRunnables, or a single IgniteRunnable.

AFFINITY_CALL

IgniteCallable.

AFFINITY_RUN

IgniteRunnable.

Headers used

This endpoint uses the following headers:

Header name Constant Expected type Description

CamelIgniteComputeExecutionType

IgniteConstants.IGNITE_COMPUTE_EXECUTION_TYPE

IgniteComputeExecutionType enum

Allows you to dynamically change the compute operation to perform.

CamelIgniteComputeParameters

IgniteConstants.IGNITE_COMPUTE_PARAMS

Any object or Collection of objects.

Parameters for APPLY, BROADCAST and EXECUTE operations.

CamelIgniteComputeReducer

IgniteConstants.IGNITE_COMPUTE_REDUCER

IgniteReducer

Reducer for the APPLY and CALL operations.

CamelIgniteComputeAffinityCacheName

IgniteConstants.IGNITE_COMPUTE_AFFINITY_CACHE_NAME

String

Affinity cache name for the AFFINITY_CALL and AFFINITY_RUN operations.

CamelIgniteComputeAffinityKey

IgniteConstants.IGNITE_COMPUTE_AFFINITY_KEY

Object

Affinity key for the AFFINITY_CALL and AFFINITY_RUN operations.
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