API server

The API server is a daemon implemented using Go and listens on TCP port 9311.

This component is used to send command from UI to Redis, using HTTP Rest API and Redis Pub/Sub protocol.

API server

API Paths

APIs are documented using a swagger.json file. To browse all existing APIs, use the Swagger UI.

API flow:

authenticate the user using the login API
extract the JWT token from the login API response
use the token to execute all next API calls

Authentication:

curl -X 'POST' \
  'http://localhost:9311/api/login' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -d '{"username": "admin", "password": "Nethesis,12345"}' | jq

Response, note the JWT token saved inside the token field:

{
  "code": 200,
  "expire": "2022-02-01T13:54:50Z",
  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhY3Rpb25zIjpbXSwiZXhwIjoxNjQzNzIzNjkwLCJpZCI6ImFkbWluIiwib3JpZ19pYXQiOjE2NDMxMTg4OTAsInJvbGUiOiIifQ.BzzmleO6ln40DQUZr4FUyFTFEle6PkK-ar-vqwXJ5uo"
}

Use the obtained JWT token to list configured nodes:

curl -X 'GET' \ 
  'http://localhost:9311/api/nodes'
   -H 'accept: application/json' \
   -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhY3Rpb25zIjpbXSwiZXhwIjoxNjQzNzIzNjkwLCJpZCI6ImFkbWluIiwib3JpZ19pYXQiOjE2NDMxMTg4OTAsInJvbGUiOiIifQ.BzzmleO6ln40DQUZr4FUyFTFEle6PkK-ar-vqwXJ5uo"

Response:

{
  "code": 200,
  "data": {
    "list": [
      "1"
    ],
    "queue": "node/*"
  },
  "message": "success"
}

You can also use the shortcut command called api-cli. Usage example:

# api-cli list-actions
node/1/get-node-status
...

Audit log

Every request made to the server, using its APIs or WebSocket, is logged inside an audit db. The audit db is store in a file using a SQLite database schema. Each record is composed by:

ID: the unique id of the record, autoincrement
User: the name of the user that made the specific action
Action: the name of the action made by the user
Data: the payload of the action (if present)
Timestamp: the time when the specific action is executed

Audit database is saved inside AUDIT_FILE variable, default path is /var/lib/nethserver/api-server/audit.db.

The audit logs can be access using the audit API or directly from command line. Example:

sqlite3 /var/lib/nethserver/api-server/audit.db "SELECT * FROM audit LIMIT 10;" ".exit"

api-cli

You can also use the shortcut command called api-cli. Usage example:

# api-cli login
username: admin
password:

If authentication is successful the login subcommand stores a JWT token in $XDG_RUNTIME_DIR/.api-cli.cache. With such token the run subcommand sends API calls to api-server. To destroy the token run

api-cli logout

If the token is missing api-cli tries to talk directly with Redis. In any case to run an action use the run subcommand, e.g.:

api-cli run list-actions

Shell auto-complete is available. It is possible to type TAB key to automatically complete the action name:

api-cli run <TAB><TAB>