Python

Since Camel 3.19

Camel allows Python to be used as an Expression or Predicate in Camel routes.

For example, you can use Python in a Predicate with the Content-Based Router EIP.

Python Options

The Python language supports 2 options, which are listed below.

Name Default Java Type Description

resultType (common)

String

Sets the class of the result type (type from output).

trim (advanced)

true

Boolean

Whether to trim the source code to remove leading and trailing whitespaces and line breaks. For example when using DSLs where the source will span across multiple lines and there may be additional line breaks at both the beginning and end.

Variables

Variable Type Description

this

Exchange

the Exchange is the root object

context

CamelContext

the CamelContext

exchange

Exchange

the Exchange

exchangeId

String

the exchange id

message

Message

the message

body

Message

the message body

headers

Map

the message headers

properties

Map

the exchange properties

Dependencies

To use Python in your Camel routes, you need to add the dependency on camel-python which implements the Python language.

If you use Maven, you could add the following to your pom.xml, substituting the version number for the latest release.

<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-python</artifactId>
  <version>x.x.x</version>
</dependency>

Unresolved include directive in modules/languages/pages/python-language.adoc - include::spring-boot:partial$starter.adoc[]