Inline Task

"type": "INLINE"

The INLINE task helps execute necessary logic at workflow runtime, using an evaluator. There are two supported evaluators as of now:

Configuration

The INLINE task is configured by specifying the following keys inside inputParameters, along side any other input values required for the evaluation.

inputParameters

Name	Type	Description	Notes
evaluatorType	String	Type of the evaluator. Supported evaluators: value-param, javascript which evaluates javascript expression.	Must be non-empty.
expression	String	Expression associated with the type of evaluator. For javascript evaluator, Javascript evaluation engine is used to evaluate expression defined as a string. Must return a value.	Must be non-empty.

Besides expression, any value is accessible as $.value for the expression to evaluate.

Outputs

Name	Type	Description
result	Map	Contains the output returned by the evaluator based on the expression

Examples

Example 1

{
  "name": "INLINE_TASK",
  "taskReferenceName": "inline_test",
  "type": "INLINE",
  "inputParameters": {
      "inlineValue": "${workflow.input.inlineValue}",
      "evaluatorType": "javascript",
      "expression": "function scriptFun(){if ($.inlineValue == 1){ return {testvalue: true} } else { return
      {testvalue: false} }} scriptFun();"
  }
}

The task output can then be referenced in downstream tasks using an expression: "${inline_test.output.result.testvalue}"

Note

The JavaScript evaluator accepts JS code written to the ECMAScript 5.1(ES5) standard

Example 2

Perhaps a weather API sometimes returns Celcius, and sometimes returns Farenheit temperature values. This task ensures that the downstream tasks ONLY receive Celcius values:

{
  "name": "INLINE_TASK",
  "taskReferenceName": "inline_test",
  "type": "INLINE",
  "inputParameters": {
      "scale": "${workflow.input.tempScale}",
        "temperature": "${workflow.input.temperature}",
      "evaluatorType": "javascript",
      "expression": "function SIvaluesOnly(){if ($.scale === "F"){ centigrade = ($.temperature -32)*5/9; return {temperature: centigrade} } else { return 
      {temperature: $.temperature} }} SIvaluesOnly();"
  }
}