Speech to Text service using GO-Lang (db: SQLite3)

⭐ For API we are using GIN http server.
⭐ We have demonstrated how to use security related headers for the endpoints.
⭐ Used FULL-TEXT search indexing using FTS4 module to filter audio data faster.
⭐ APP ensure security with statefull HMAC SHA256 JWT tokens.
⭐ Included FFmpeg lib for proper STT service input. The app supports these media type as file input: mp2, mp3, mp4, wav, acc, flac, avi, ogg
⭐ Set-up docker-compose for easier deployments.
⭐ Set-up GitHub actions for CI purposes.
⭐ Included TEST suites
⭐ Included POSTMAN collections for easier testing.

DEMO app: https://protected-mountain-13923.herokuapp.com/

APP web interface:

POSTMAN API testing:

How to config

• HTTP configurations (port, database-path) are in the toml file: ./conf.d/app.toml

API Security

We are taking following measures to ensure API security.

• Setting up CORS security headers.
• Setting up the 'attack-vector' headers

API security

Implemented statefull HMAC SHA256 JWT tokens verifications.

Web general security

	//setting-up cors headers
	r.Use(cors.New(cors.Config{
		AllowOrigins:     []string{"*"},
		AllowMethods:     []string{"GET"},
		AllowHeaders:     []string{"Origin"},
		ExposeHeaders:    []string{"Content-Length"},
		AllowCredentials: true,
		MaxAge:           12 * time.Hour,
	}))

	//setting-up security headers
	r.Use(secure.New(secure.Config{
		FrameDeny:             true,
		ContentTypeNosniff:    true,
		BrowserXssFilter:      true,
		ContentSecurityPolicy: "default-src 'self'",
		IENoOpen:              true,
		ReferrerPolicy:        "strict-origin-when-cross-origin",
		//SSLProxyHeaders:       map[string]string{"X-Forwarded-Proto": "https"},
	}))

How to run

go build -o stt-service
./stt-service

How to run test

go clean -testcache  
go test ./...

Hot code reloading:

nodemon -e js,go,json,html,css,toml --exec go run main.go --signal SIGTERM

API endpoint:

• Use the POSTMAN collection JSON config and test there or you can use CURL.
• Login and audio text searching is available.

Login and get an access token

curl -X POST -d [options] http://127.0.0.1:5000/login
OPTIONS: user=a pass=a

Register and get an access token

curl -X POST -d [options] http://127.0.0.1:5000/register
OPTIONS: user=a pass=a email=a@a.com

Transcribe to get audio text data

curl -X POST -d [options] http://127.0.0.1:5000/transcribe
OPTIONS: token=<token> file=<file> is_save_file=<true/false>

Get all audio transcribed JSON data

curl -X POST -d [options] http://127.0.0.1:5000/all-data

OPTIONS: token=<token> page_no=1

Filter AUDIO text with criteria: text

curl -X POST -d [options] http://127.0.0.1:5000/filter

OPTIONS: token=<token> page_no=1 query=<search_term>

How to build docker images

docker-compose up

How to push to Heroku

1. Install Docker
2. Install Heroku cli
3. Create a Heroku project
4. Run docker container locally. Then run these commands:

- heroku login
- heroku container:login
- heroku create
- heroku container:push web
- heroku container:release web
- heroku open

TODO:

- Create and run unimplemented  test suites.
- Config GitHub actions to run properly.

References

- Admin panel used in the UI: https://adminlte.io/
- GIN API documentations: https://github.com/gin-gonic/gin#readme