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https://github.com/kn-lim/slackingway-bot
A personal Slack bot to handle miscellaneous tasks hosted on AWS Lambda
https://github.com/kn-lim/slackingway-bot
aws go golang lambda slack
Last synced: 13 days ago
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A personal Slack bot to handle miscellaneous tasks hosted on AWS Lambda
- Host: GitHub
- URL: https://github.com/kn-lim/slackingway-bot
- Owner: kn-lim
- License: mit
- Created: 2024-10-07T09:10:25.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2024-10-20T23:45:18.000Z (4 months ago)
- Last Synced: 2024-10-25T02:38:17.844Z (4 months ago)
- Topics: aws, go, golang, lambda, slack
- Language: Go
- Homepage:
- Size: 324 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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# slackingway-bot
[](https://coveralls.io/github/kn-lim/slackingway-bot?branch=main)
[](https://goreportcard.com/report/github.com/kn-lim/slackingway-bot)
A personal Slack bot to handle miscellaneous tasks hosted on AWS Lambda.
## Packages Used
- [aws-lambda-go](https://github.com/aws/aws-lambda-go/)
- [aws-sdk-go-v2](https://github.com/aws/aws-sdk-go-v2)
- [chattingway](https://github.com/kn-lim/chattingway)
- [mock](https://github.com/uber-go/mock)
- [slack-go](https://github.com/slack-go/slack)
- [testify](https://github.com/stretchr/testify)
# Using the Slack Bot
## Slack Slash Commands
| Command | Description |
| - | - |
| `/coinflip` | Flips a coin |
| `/delayed-ping` | Ping with a delay |
| `/echo` | Opens a Slack modal to echo a text to the output channel |
| `/menu` | Opens a Slack modal to select options and sends the result to the output channel |
| `/ping` | Ping |
| `/roll` | Rolls a dice with modifiers |
## How to Build
From the project home directory:
- **Endpoint Function**: `CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -tags lambda.norpc -o binary/bootstrap ./cmd/endpoint/`
- **Task Function**: `CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -tags lambda.norpc -o binary/bootstrap ./cmd/task/`
Zip the `bootstrap` binaries and upload it to the Lambda functions.
## Environment Variables
### Endpoint Lambda Function
| Name | Description |
| - | - |
| `DEBUG` | Enable debug mode |
| `TASK_FUNCTION_NAME` | Name of the Task Lambda Function |
| `SLACK_SIGNING_SECRET` | Slack App's Signing Secret |
| `SLACK_OAUTH_TOKEN` | Slack App's OAuth Token |
| `SLACK_HISTORY_CHANNEL_ID` | Slackingway's History Channel ID |
| `SLACK_OUTPUT_CHANNEL_ID` | Slackingway's Output Channel ID |
| `ADMIN_ROLE_USERS` | Comma-delimited string of Slack User IDs with admin roles |
### Task Lambda Function
| Name | Description |
| - | - |
| `DEBUG` | Enable debug mode |
| `SLACK_OAUTH_TOKEN` | Slack App's OAuth Token |
| `SLACK_HISTORY_CHANNEL_ID` | Slackingway's History Channel ID |
| `SLACK_OUTPUT_CHANNEL_ID` | Slackingway's Output Channel ID |
## AWS Setup
To quickly spin up **slackingway-bot** on AWS, use the [Terraform module](https://github.com/kn-lim/chattingway-terraform/).
1. Create the **endpoint** Lambda function on AWS.
- For the `Runtime`, select `Amazon Linux 2023`.
- For the `Architecture`, select `x86_64`.
2. Add an API Gateway triger to the **endpoint** Lambda function.
- Use the following settings:
- **Intent**: Create a new API
- **API type**: REST API
- **Security**: Open
3. Create the **task** Lambda function on AWS.
- For the `Runtime`, select `Amazon Linux 2023`.
- For the `Architecture`, select `x86_64`.
4. Build the **endpoint** and **task** binaries.
5. Archive the `bootstrap` binaries in .zip files and upload it to the Lambda functions.
6. In the `Configuration` tab, add in the required environment variables to the Lambda functions.
7. Change the `Timeout` of the **task** Lambda function to a value greater than 3 seconds.
- The `Timeout` of the **endpoint** Lambda function can stay as 3 seconds to follow Slack's requirements.
## Slack Setup
### Slash Commands
Get the **endpoint** Lambda API Gateway triggers's `API endpoint` and add it to the Slack apps's `Request URL` in each Slack Slash Command in the Slack API page.
### OAuth & Permissions
#### OAuth Tokens
Save the `Bot User OAuth Token` as the `SLACK_OAUTH_TOKEN` environment variable in the **task** Lambda function.
#### Scopes
Enable the following `Bot Token Scopes`:
- `channels:history`
- `chat:write`
- `chat:write.customize`
- `commands`
- `im:history`
- `users.profile:read`
- `users:read`
### Event Subscriptions
#### Enable Events
Get the **endpoint** Lambda API Gateway triggers's `API endpoint` and add it to the Slack apps's `Request URL`. It should be verified after a second.
#### Subscribe to Bot Events
Add the following bot user events:
- `app_home_opened`