OOWS

Warning — this project is in early development. Contributions and feedbacks are welcome. Usage in production systems is discouraged

OOWS (oh-owls) is an object-oriented friendly client for Amazon Web Services — AWS. It is based on boto3 official client and aims to provide a cleaner and more Pythonic interface to handle AWS resources.

Currently, Boto3 already provides the Resource Model which is a nicer and more OO-friendly interface over raw JSON, as explained here. Although it works, it does not provide an interface for resources I currently need. This project started by a personal need of mine to ease the current state of programmatic access to ECS resources.

Rationale

Suppose you want to list all of a cluster's services' task definitions. Using pure boto3, you'd need to write something like:

session = boto3.Session()
ecs_client = session.client('ecs')
services = ecs_client.list_services(cluster="MyCluster")['serviceArns']
for service in services:
    s = ecs_client.describe_services(cluster="MyCluster", services=[service])
    print("The task definition is {}".format(s['services'][0]['taskDefinition']))

But using oows, you can rewrite this code to something like:

cluster = Cluster("MyCluster")

for service in cluster.services:
    print("The task definition is {}".format(service.task_definition))

Quick Start

Currently, OOWS supports only a few ECS components and operations.

First, install it with PIP

pip install boto3 oows

As of now, you'll need to supply a regular boto3 Session

import boto3
from oows import ecs


s = boto3.Session()  # Create a new boto3 Session.

cluster = ecs.Cluster("MyCluster", s)  # Initialize a new cluster object
service = ecs.Service("server", cluster, s)  # Initialize a new service object
task_definition = service.task_definition  # Gets the service's task definition
task_definition.update_env("new_env", "new_value")  # Creates a new task definition with updated env