Common libraries for writing services/applications.

A service is a routing layers that plugs in event handlers.

In each service, you map HTTP endpoints to corresponding event handlers.

Requirements

• pipenv dev workflow
• jq command line JSON processir
• DynamoDB Local

Installation

• Overview of the Makefile commands: $ make help
• Install dependencies: $ make init
• Get into the shell: $ pipenv shell

Documentation

Basic Service

from flowers.api import Service

class PingPongService(Service):
    # event handlers
    ping = lambda event: (HTTPStatus.OK, "PONG")
    hello = lambda event: (HTTPStatus.OK, "Hello world!", headers)

    routes = [(["GET"], "/hello", hello), (["GET"], "/ping", ping)]

Using middlewares

import logging
import json
from flowers.api import Service, Middleware

class AuthMiddleware(Middleware):
    def process_event(self, event):
        pass

class PingLoggingMiddleware(Middleware):
    def process_event(self, event):
        print(f"{self.service} ==> {json.dumps(event)}")
        return event


class HelloWorldService(Service):
    middlewares = (PingLoggingMiddleware, AuthMiddleware)
    hello = lambda event: (HTTPStatus.OK, "Hello world!")

See tests for more examples on how to use this.