Serverless Python Sample

A simple serverless python sample. The service is running on AWS Lambda using Serverless Framework.

The service has a dependency on external package (requests) and it exposes 2 REST API endpoints:

Endpoint	Description
GET /posts	Retrieves a list of posts
GET /posts/{id}	Retrieves a specific post (e.g. GET /posts/5)

Usage

Setup

Step	Command	Description
1.	npm install -g serverless	Install Serverless CLI
2.	npm install	Install Serverless dependencies
3.	Set up an AWS account with admin permissions	Documentation

Development

Step	Command	Description
1.	mkvirtualenv posts	Create virtual environment (using virtualenvwrapper)
2.	pip install -r requirements.txt	Install dependencies

Deployment

sls deploy

Invocation

curl <host>/posts
curl <host>/posts/5

Tips & Tricks

help command

Just use it on anything:

sls  help

or

sls <command> --help

deploy function command

Deploy only one function:

sls deploy function -f <function-name>

logs command

Tail the logs of a function:

sls logs -f <function-name> -t

info command

Information about the service (stage, region, endpoints, functions):

sls info

invoke command

Run a specific function with a provided input and get the logs

sls invoke -f <function-name> -p event.json -l

Credits

JSONPlaceholder by @typicode is used for the posts backend.