Flask + Serverless — AWS Lambda의 API를 사용하는 쉬운 방법

  pip install virtualenv

  $ npm install -g serverless

    mkdir quotes
    cd quotes
    virtualenv venv -p python3
    (venv) pip install Flask
    (venv) pip freeze > requirements.txt

    from collections import namedtuple
    from random import choice

    from flask import Flask, jsonify

    Quote = namedtuple("Quote", ("text", "author"))

    quotes = [
        Quote("Talk is cheap. Show me the code.", "Linus Torvalds"),
        Quote("Programs must be written for people to read, and only incidentally for machines to execute.", "Harold Abelson"),
        Quote("Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live",
            "John Woods"),
        Quote("Give a man a program, frustrate him for a day. Teach a man to program, frustrate him for a lifetime.", "Muhammad Waseem"),
        Quote("Progress is possible only if we train ourselves to think about programs without thinking of them as pieces of executable code. ",
            "Edsger W. Dijkstra")
    ]

    app = Flask(__name__)

    @app.route("/")
    def hello_from_root():
        return jsonify(message='Hello from root!')

    @app.route("/quote", methods=["GET"])
    def get_random_quote():
        return jsonify(choice(quotes)._asdict())

    service: quotes #name this whatever you want

    provider:
    name: aws
    runtime: python3.6
    region: us-east-1
    memorySize: 128

  $ sls plugin install -n serverless-wsgi
  $ sls plugin install -n serverless-python-requirements

service: quotes-serverless #name this whatever you want

provider:
name: aws
runtime: python3.6
region: us-east-1
memorySize: 128

plugins:
- serverless-wsgi
- serverless-python-requirements

custom:
wsgi:
app: app.app
packRequirements: false

functions:
app:
handler: wsgi_handler.handler
events:
    - httpApi: '*'

deprecationNotificationMode: error #add this for debugging
configValidationMode: error #add this for debugging
    `);

Flask==1.1.4
Werkzeug==1.0.1
markupsafe==2.0.1

    $ serverless wsgi serve

use /quotes to see the random quotes.

    set AWS_ACCESS_KEY_ID=<your-key-here>
    set AWS_SECRET_ACCESS_KEY=<your-secret-key-here>
    # AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are now available for serverless to use
    serverless deploy

    # In Linux use 'export' instead of 'set'

    $ serverless deploy