Module Functions

Module functions are functions in a module which are automatically applied to events when they are consumed from a queue.

Multiple module functions can be chained in order to reach the desired effect. Module function modify events in one way or another.

Characteristics:

• Module functions are applied to events and modify them.
• Module functions are executed when events are consumed from a queue.
• Module functions are only applied to queue which are consumed by a registered function by using wishbone.actor.Actor.registerConsumer().
• When a function returns an error it is logged and skipped and the rest of the module functions will be applied.

Wishbone comes by default with following builtin module functions:

Name	Description
wishbone.function.module.append	Adds a value to an existing list.
wishbone.function.module.lowercase	Puts the desired field in lowercase.
wishbone.function.module.set	Sets a field to the desired value.
wishbone.function.module.uppercase	Puts the desired field in uppercase.

See following examples:

• Using a module function.
• Creating a module function.