scripts-javascript.yaml

# script templates provide a way to run arbitrary snippets of code
# in any language, to produce a output "result" via the standard out
# of the template. Results can then be referenced using the variable,
# {{steps.<stepname>.outputs.result}}, and used as parameter to other
# templates, and in 'when', and 'withParam' clauses.
# This example demonstrates the use of a javascript script to
# generate a random number which is printed in the next step.
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: scripts-javascript-
spec:
  entrypoint: javascript-script-example
  templates:
  - name: javascript-script-example
    steps:
    - - name: generate
        template: gen-random-int
    - - name: print
        template: print-message
        arguments:
          parameters:
          - name: message
            value: "{{steps.generate.outputs.result}}"

  - name: gen-random-int
    script:
      image: node:9.1-alpine
      command: [node]
      source: |
        var rand = Math.floor(Math.random() * 100);
        console.log(rand);

  - name: print-message
    inputs:
      parameters:
      - name: message
    container:
      image: alpine:latest
      command: [sh, -c]
      args: ["echo result was: {{inputs.parameters.message}}"]