將LineBot發布到 Deta.sh 中 (Deta.sh已停止服務，轉移到Deta.space，此文待修中…)

tags: deta.sh fasiapi flask linebot

Heroku這幾年已是大家在學web api熱愛的平台，許多LINE Bot或是api服務都架在上面， 不過他已經開始收費，這對於剛剛開始學習的學生來說造成了一些困擾，除了測試時可用ngrok取代，要發布時常因沒信用卡而無法取得Google Cloud RUN的測試帳號。

不過還好，現在還是有deta.sh平台可以發布，我測試了一下，把註冊到發布過程記錄下來。

• 將LineBot發布到 Deta.sh 中 (Deta.sh已停止服務，轉移到Deta.space，此文待修中…)
  • 安裝與設定Deta CLI
    • "mac"
    • "linux"
    • "windows"
    • 在安裝好之後登入deta
  • 第一個Micro "Hello, world!"
  • LineBot- EchoBOT
    • 1. 新增一個目錄 mkdir echobot ; cd echobot
    • 2. 新增一個 main.py (名稱一定要是main.py，deta.sh會自動執行它)，內容如下
    • 3. deta new (新增micro)
    • 4. 檢查 flask(或fastapi) 與 line-bot-sdk是否匯入
    • 5. 將連接linebot的webhook填入develop-line中

安裝與設定Deta CLI

"mac"

info 在Shell輸入:

curl -fsSL https://get.deta.dev/cli.sh | sh

"linux"

在Shell輸入:

curl -fsSL https://get.deta.dev/cli.sh | sh

"windows"

開啟PowerShell輸入:

iwr https://get.deta.dev/cli.ps1 -useb | iex

在安裝好之後登入deta

deta login 註冊並登入deta系統 在Settings中Access Tokens -> Create Token ，出現

Items	Codes
Token ID	nQ7xxJxx
Access Token	nQ7xxJxx_cBb3ZpxxxxxxxxxxmkxxxxHixxxxcMxxx
Token Expiration	2023-12-18T10:36:49Z

要將copy-paste 存檔在 .deta/tokens中。

tokens
{
    "deta_access_token": "your_access_token"
}

第一個Micro "Hello, world!"

#登入deta
deta login

#新增一個deta-micro (deta叫他micro，如同heroku的dyno一樣)
deta new hello --python 
或是
mkdir hello
cd hello
deta new 

Successfully created a new micro
{
        "name": "hello",
        "id": "9dc------------------",
        "project": "c0ds8pt4",
        "runtime": "python3.9",
        "endpoint": "https://u3yc7d.deta.dev",
        "region": "ap-southeast-1",
        "visor": "disabled",
        "http_auth": "disabled"
}
你的api已經成功發布在 https://u3yc7d.deta.dev
超簡單的吧!

如果你的程式需要import其他的模組時(例如flask)，需要在deta-micro的目錄中新增 requirements.txt

如果使用flask
flask
line-bot-sdk

這樣他在deta new或 deta deploy時會自動將flask,line-bot-sdk模組載入。

如果使用fastapi
fastapi
line-bot-sdk

這樣他在deta new或 deta deploy時會自動將fastapi,line-bot-sdk模組載入。

LineBot- EchoBOT

這是我另一篇 My First Line Bot 的程式，現在我將它移植到deta.sh上
程序同上方

1. 新增一個目錄 mkdir echobot ; cd echobot

2. 新增一個 main.py (名稱一定要是main.py，deta.sh會自動執行它)，內容如下

#使用flask
LINE_CHANNEL_ACCESS_TOKEN='Your channel token'
LINE_CHANNEL_SECRET='Your channel secret'

from flask import Flask, request
from linebot import LineBotApi, WebhookHandler
from linebot.exceptions import InvalidSignatureError
from linebot.models import MessageEvent, TextMessage, TextSendMessage

app = Flask(__name__)

line_bot_api = LineBotApi(LINE_CHANNEL_ACCESS_TOKEN)
handler = WebhookHandler(LINE_CHANNEL_SECRET)

@app.route("/", methods=["POST"])
def webhook_handler():
    # verify signature if needed
    # add logic to handle the request
    signature = request.headers['X-Line-Signature']
    body = request.get_data(as_text=True)
    try:
        handler.handle(body, signature)
    except InvalidSignatureError:
        raise HTTPException(status_code=400, detail="SignatureError")
    return 'OK'
 
@handler.add(MessageEvent, message=TextMessage)
def handling_message(event):
    line_bot_api.reply_message(event.reply_token,
        TextSendMessage(text=event.message.text))

# 使用fastapi
LINE_CHANNEL_ACCESS_TOKEN='Your channel token'
LINE_CHANNEL_SECRET='Your channel secret'

from fastapi import FastAPI, Request
from linebot import LineBotApi, WebhookHandler
from linebot.exceptions import InvalidSignatureError
from linebot.models import MessageEvent, TextMessage, TextSendMessage

app= FastAPI()

line_bot_api = LineBotApi(LINE_CHANNEL_ACCESS_TOKEN)
handler = WebhookHandler(LINE_CHANNEL_SECRET)

#line_bot_api = LineBotApi(os.getenv("LINE_CHANNEL_ACCESS_TOKEN"))
#handler = WebhookHandler(os.getenv("LINE_CHANNEL_SECRET"))

# a POST route for our webhook events
@app.post("/")
async def webhook_handler(request: Request):
    # verify signature if needed
    # add logic to handle the request
    signature = request.headers['X-Line-Signature']
    body = await request.body()
    try:
        handler.handle(body.decode(),signature)
    except InvalidSignatureError:
        raise HTTPException(status_code=400, detail="SignatureError")
    
    return "ok"
    
@handler.add(MessageEvent, message=TextMessage)
def handling_message(event):
    line_bot_api.reply_message(event.reply_token,
        TextSendMessage(text=event.message.text))

3. deta new (新增micro)

PS C:\project\deta\echobot> deta new
Successfully created a new micro
{
        "name": "echobot",
        "id": "be8xxxxxxxxxxxxxxxxxxxxxx",
        "project": "c0ds8pt4",
        "runtime": "python3.9",
        "endpoint": "https://e4vsf2.deta.dev",
        "region": "ap-southeast-1",
        "visor": "disabled",
        "http_auth": "disabled"
}
Adding dependencies...
Collecting flask
  Downloading https://files.pythonhosted.org/packages/0f/43/15f4f9ab225b0b25352412e8daa3d0e3d135fcf5e127070c74c3632c8b4c/Flask-2.2.2-py3-none-any.whl (101kB)
Collecting itsdangerous>=2.0

4. 檢查 flask(或fastapi) 與 line-bot-sdk是否匯入

 deta details
{
        "name": "echobot",
        "id": "39exxxxxxxxxxxxxxxxxxxxxxxxxx",
        "project": "default",
        "runtime": "python3.9",
        "endpoint": "https://5sj87w.deta.dev",
        "region": "ap-southeast-1",
        "dependencies": [
                "flask",
                "line-bot-sdk"
        ],
        "visor": "disabled",
        "http_auth": "disabled"
}

5. 將連接linebot的webhook填入develop-line中

將 deta.sh 提供的endpoint https://xxxx.deta.dev填入

• 林奇賢