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.