[Argo-Workflows] Lesson6: Output Parameter File

Chà chà đã quá lâu chúng ta trờ lại học Argo Workflows

Ở bài 5 chúng ta chuyền value từ task này sang task khác thông qua Output Parameter

Ở bài sáu thì chúng truyền parameter bằng nội dung trong file.

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: wf-output-parameter-file
spec:
  entrypoint: dag-template
  arguments:
    parameters:
    - name: message1
      value: Task 1 is executed
    - name: message2
      value: Task 2 is executed
  templates:
  - name: dag-template
    inputs:
      parameters:
        - name: message1
        - name: message2
    dag:
      tasks:
      - name: Task1
        arguments:
          parameters: [{name: text, value: "{{inputs.parameters.message1}}"}]
        template: task-template
      - name: Task2
        arguments:
          parameters: [{name: text, value: "{{inputs.parameters.message2}}"}]
        template: task-template
        dependencies: [Task1]
      - name: Task3
        template: task-output
        dependencies: [Task1]
      - name: Task4
        arguments:
          parameters: [{name: text, value: "{{tasks.Task3.outputs.parameters.task-param}}"}]
        template: task-template
        dependencies: [Task2, Task3]

  - name: task-template
    inputs:
      parameters:
      - name: text
    script:
      image: python:3.8-slim
      command: 
      source: |
        p = "{{inputs.parameters.text}}"
        print(p)

  - name: task-output
    script:
      image: node:9.1-alpine
      command: [node]
      source: |
        var par = "Whatever parameters are written to the file.";
        const fs = require('fs');
        fs.writeFile("/tmp/output-params.txt", par)
        console.log(par);
    outputs:
      parameters:
      - name: task-param
        valueFrom:
          path: /tmp/output-params.txt

  - name: deylay-template
    suspend:
      duration: "10s"