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Chapter 4. The kie-camel component

The kie-camel component is an Apache Camel endpoint provided by Red Hat Fuse that integrates Fuse with Red Hat Decision Manager. It enables you to specify a Red Hat Decision Manager module by using a Maven group ID, artifact ID, and version (GAV) identifier which you can pull into the route and execute. It also enables you to specify portions of the message body as facts.You can use the kie-camel component with embedded engines or with Decision Server.

Embedded engines

In this scenario, KIE engines run in the same container as the Fuse integration project and you can communicate with engines using KIE commands. To create the Camel producer, use the following URI: 

kie-local:kie-session-name?action=execute
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For example, enter the following command to initialize a Camel route in Spring: 

<from uri="direct:runCommand" />
  	<to uri="kie-local:kie-session1?action=execute"/>
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Decision Server

In this scenario, the kie-camel component connects to Decision Server using the Decision Server REST API. This enables users to communicate with the Decision Server using the Decision Server API. To create a producer, use the following URI: 

kie:http://username:password@kie-server-url`
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For example, enter the following command to initialize a Camel route in Spring: 

<from uri="direct:runCommand" />
  	<to uri="kie:http://user:psswd@localhost:8080/kie-server-services/services/rest/server"/>
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The message has the following headers:

Expand
Table 4.1. Message headers and descriptions
HeaderDescription

CamelKieClient

Decision Server client (mandatory)

CamelKieOperation

Decision Server client (mandatory)

CamelKieParameterName

The value of the client method parameter (optional)

CamelKieBodyParam

The method parameter where the message body is stored (optional)

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