LINE API

LINE Messaging API

LINE Messaging API Docs

These are the steps to set up a LINE bot for LibreNMS.

1. Register your real LINE account in the developer portal.

2. Add a new channel and choose Messaging API. Then complete the forms. You cannot change Channel name later.

3. Open the "Messaging API" tab of your channel. This tab holds some important values.

   • Bot basic ID and QR code are the ID and the QR code of your LINE bot.
   • Channel access token (long-lived) goes into LibreNMS. Keep it secret.

4. Add your LINE bot as a friend from your real LINE account.

5. The recipient ID is a groupID, a userID, or a roomID. LibreNMS uses this ID to send a message to a group or a user. To find it, use the NodeJS program below with ngrok as a temporary HTTPS webhook.

   LINE-bot-RecipientFetcher

6. Run the program. Then make the port public with ngrok.

   $ node index.js
   $ ngrok http 3000
   

7. Open the "Messaging API" tab of your channel. Set the Webhook URL to https://<your ngrok domain>/webhook.

8. To send a message to yourself, send a message to your LINE bot from your real account. The program then prints the userID in the console.

   sample value:

   {"type":"user","userId":"U527xxxxxxxxxxxxxxxxxxxxxxxxxc0ee"}
   

9. To send a message to a group, do these steps.

   • Add your LINE bot to the group.
   • Send a message to the group from your real account.

   The program then prints the groupID in the console. This value is the recipient ID. Keep it secret.

   sample value:

   {"type":"group","groupId":"Ce51xxxxxxxxxxxxxxxxxxxxxxxxxx6ef","userId":"U527xxxxxxxxxxxxxxxxxxxxxxxxxc0ee"} ```
   

Example: