Ansible Binary Golang Module #snippet

go-build.sh

go build helloworld.go
GOOS=windows GOARCH=amd64 go build helloworld.go

helloworld.go

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"os"
)

type ModuleArgs struct {
	Name string
}

type Response struct {
	Msg     string `json:"msg"`
	Changed bool   `json:"changed"`
	Failed  bool   `json:"failed"`
}

func ExitJson(responseBody Response) {
	returnResponse(responseBody)
}

func FailJson(responseBody Response) {
	responseBody.Failed = true
	returnResponse(responseBody)
}

func returnResponse(responseBody Response) {
	var response []byte
	var err error
	response, err = json.Marshal(responseBody)
	if err != nil {
		response, _ = json.Marshal(Response{Msg: "Invalid response object"})
	}
	fmt.Println(string(response))
	if responseBody.Failed {
		os.Exit(1)
	} else {
		os.Exit(0)
	}
}

func main() {
	var response Response

	if len(os.Args) != 2 {
		response.Msg = "No argument file provided"
		FailJson(response)
	}

	argsFile := os.Args[1]

	text, err := ioutil.ReadFile(argsFile)
	if err != nil {
		response.Msg = "Could not read configuration file: " + argsFile
		FailJson(response)
	}

	var moduleArgs ModuleArgs
	err = json.Unmarshal(text, &moduleArgs)
	if err != nil {
		response.Msg = "Configuration file not valid JSON: " + argsFile
		FailJson(response)
	}

	var name string = "World"
	if moduleArgs.Name != "" {
		name = moduleArgs.Name
	}

	response.Msg = "Hello, " + name + "!"
	ExitJson(response)
}

helloworld.yml

---
- hosts: all
  gather_facts: false
  tasks:
    - name: ping
      ping:
      when: ansible_connection|default('ssh') != 'winrm'

    - name: win_ping
      win_ping:
      when: ansible_connection|default('ssh') == 'winrm'

    - name: Hello, World!
      helloworld:

    - name: Hello, Ansible!
      helloworld:
        name: Ansible

    - name: Async Hello, World!
      helloworld:
      async: 1
      poll: 1
      when: ansible_connection|default('ssh') != 'winrm'

    - name: Async Hello, Ansible!
      helloworld:
        name: Ansible
      async: 1
      poll: 1
      when: ansible_connection|default('ssh') != 'winrm'

output.txt

PLAY ***************************************************************************

TASK [ping] ********************************************************************
skipping: [windows] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}
ok: [localhost] => {"changed": false, "ping": "pong"}
ok: [paramiko] => {"changed": false, "ping": "pong"}
ok: [ssh] => {"changed": false, "ping": "pong"}

TASK [win_ping] ****************************************************************
skipping: [paramiko] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}
skipping: [ssh] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}
ok: [localhost] => {"changed": false, "ping": "pong"}
ok: [windows] => {"changed": false, "ping": "pong"}

TASK [Hello, World!] ***********************************************************
ok: [localhost] => {"changed": false, "failed": false, "msg": "Hello, World!"}
ok: [ssh] => {"changed": false, "failed": false, "msg": "Hello, World!"}
ok: [paramiko] => {"changed": false, "failed": false, "msg": "Hello, World!"}
ok: [windows] => {"changed": false, "failed": false, "msg": "Hello, World!"}

TASK [Hello, Ansible!] *********************************************************
ok: [localhost] => {"changed": false, "failed": false, "msg": "Hello, Ansible!"}
ok: [ssh] => {"changed": false, "failed": false, "msg": "Hello, Ansible!"}
ok: [paramiko] => {"changed": false, "failed": false, "msg": "Hello, Ansible!"}
ok: [windows] => {"changed": false, "failed": false, "msg": "Hello, Ansible!"}

TASK [Async Hello, World!] *****************************************************
skipping: [windows] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}
ok: [localhost] => {"ansible_job_id": "850503757820.24772", "changed": false, "failed": false, "finished": 1, "msg": "Hello, World!"}
ok: [ssh] => {"ansible_job_id": "772391860036.14904", "changed": false, "failed": false, "finished": 1, "msg": "Hello, World!"}
ok: [paramiko] => {"ansible_job_id": "579359157443.29225", "changed": false, "failed": false, "finished": 1, "msg": "Hello, World!"}

TASK [Async Hello, Ansible!] ***************************************************
skipping: [windows] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}
ok: [localhost] => {"ansible_job_id": "936293883360.24795", "changed": false, "failed": false, "finished": 1, "msg": "Hello, Ansible!"}
ok: [ssh] => {"ansible_job_id": "636937348491.14933", "changed": false, "failed": false, "finished": 1, "msg": "Hello, Ansible!"}
ok: [paramiko] => {"ansible_job_id": "200792079727.29345", "changed": false, "failed": false, "finished": 1, "msg": "Hello, Ansible!"}

PLAY RECAP *********************************************************************
localhost                  : ok=5    changed=0    unreachable=0    failed=0
paramiko                   : ok=5    changed=0    unreachable=0    failed=0
ssh                        : ok=5    changed=0    unreachable=0    failed=0
windows                    : ok=3    changed=0    unreachable=0    failed=0