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light microservice solution

Project description

limis build status limis coverage status

limis is a light microservice framework built in Python and powered by Tornado.

Examples: limis examples can be found on github at limis_examples

Instructions

Installation

pip install limis

Project Creation

limis-management create_project <project_name>

Service Creation

  • Scaffold the services with the project management command:

cd <project_name>
python management.py create_service <service_name>
  • Create a request handler to route service requests to your component in ‘<service_name>/handlers.py’:

from typing import Union

from tornado.websocket import WebSocketHandler
from limis.services.handlers import ComponentHandler


class HelloHTTPHandler(ComponentHandler):
    def get(self):
        self.write(self.component_class().hello())


class HelloWebSocketHandler(ComponentHandler, WebSocketHandler):
    def on_message(self, message: Union[str, bytes]):
        self.write_message(self.component_class().hello())
  • Create a component to perform actions on requests in ‘<service_name>/components.py’:

from limis.services.components import Component

from hello.handlers import HelloHTTPHandler, HelloWebSocketHandler


class HelloComponent(Component):
    component_name = 'hello'
    component_path = 'hello'
    component_http_handler = HelloHTTPHandler
    component_websocket_handler = HelloWebSocketHandler

    def hello(self):
        return 'hello'
  • Create a services configuration entry in ‘<service_name>’/services.py:

from limis.services import Service

from hello.components import HelloComponent


services = [
    Service(name='hello', path='hello', components=[HelloComponent]),
]
  • Add your services module to the project services configuration ‘<project_name>/services.py’:

from hello.services import services as hello_services


context_root = ''
services = hello_services

Launch Server

Launch the limis server from the command prompt:

python manage.py server --http --websocket

Test Service

  • HTTP Service

curl http://localhost:8080/hello/hello

Output:

hello
  • WebSocket Service

Example using websocket-client

from websocket import create_connection
websocket = create_connection('ws://localhost:8888/hello/hello/')
websocket.send('test')
websocket.recv()

Output:

hello

Project details


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