SlackのAPI、webhookをgolangで試した #Go

Slack API、webhook使い方

　API TOKEN 取得方法

　https://api.slack.com/docs/oauth-test-tokens
　でトークンを取得する。

　Webhook TOKEN 取得方法

　https://api.slack.com/incoming-webhooks
　でトークンを取得する

curl でsend message できる

curl -XPOST "https://slack.com/api/chat.postMessage?token=<TOKEN>&channel=%23general&text=Hello%20@bot_server&username=test_bot"

curl -XPOST -d "token=<TOKEN>" -d "channel=#general" -d "text=Hello @bot_server" -d "username=test_bot" "https://slack.com/api/chat.postMessage"

いろんなAPI

https://api.slack.com/methods
使いきれない。。。

golangで試す

slack_api.go

package main

import (
        "bytes"
        "net/http"
        "net/url"
        "fmt"
        "os"
)

var(
        token  string = "tokenxxxx-xxxxxxxxxxxx" // change token 
        apiUrl string = "https://slack.com/api/chat.postMessage"
)


func main() {
        arg := os.Args[1:]
        data := url.Values{}
        data.Set("token",token)
        data.Add("channel","#general")  // change channel
        data.Add("username","testBot")
        data.Add("text", fmt.Sprintf("%s",arg))

        client := &http.Client{}
        r, _ := http.NewRequest("POST",  fmt.Sprintf("%s",apiUrl), bytes.NewBufferString(data.Encode()))
        r.Header.Add("Content-Type", "application/x-www-form-urlencoded")

        resp, _ := client.Do(r)
        fmt.Println(resp.Status)
}

実行

./slack_api this is test!
200

slack_webhook.go

package main

import (
    "encoding/json"
    "io/ioutil"
    "net/http"
    "net/url"
    "os"
    "fmt"
)

var(
     // change token 
    IncomingUrl string = "https://hooks.slack.com/services/xxxxxxxxxxxx/xxxxxxxxxxxx/xxxxxxxxx"
)

type Slack struct {
    Text        string `json:"text"`
    Username    string `json:"username"`
    Icon_emoji  string `json:"icon_emoji"`
    Icon_url    string `json:"icon_url"`
    Channel     string `json:"channel"`
}

func main() {
    arg := os.Args[1:]
    params, _ := json.Marshal(Slack{
        fmt.Sprintf("%s",arg),
        "MyBot",
        "",
        "http://www.icons101.com/icons/66/NuoveXT_by_Alexandre_Moore/128/slackware.png",
        "#general"})

    resp, _ := http.PostForm(
        IncomingUrl,
        url.Values{"payload": {string(params)}},
    )

    body, _ := ioutil.ReadAll(resp.Body)
    defer resp.Body.Close()

    println(string(body))
}

実行

./slack_webhook this is test!
200 ok