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Script Engine

The script engine framework provides an extension of the base Metalus functionality. Implementations are provided out of the box:

• Javascript
• Scala

The intent of the script engine is to provide an extension to the Metalus library that doesn’t require developers to build out step libraries to introduce new functionality. This should be considered a short term solution to test changes, but it is still a best practice to fold that logic back into a proper step library.

Steps

In addition to the two engines provided, two steps are provided as part of metalus-core which allow writing custom steps within a pipeline:

• Javascript Steps
• Scala Steps

Functions

Execute Simple Script

This function executes a script and returns the result. No other parameters are allowed.

Execute Script

This function will execute a script, but it makes the PipelineContext available as the variable pipelineContext.

Execute Script with Object

This function will execute a script, but it makes the PipelineContext available as the variable pipelineContext and allows the user to pass an object to the script and made available as obj.