What is Fluke?

Fluke is a Python package that acts as a higher-level API to cloud services that primarily relate to object storage and messaging. Fluke manages to hide away much of the complexity that derives from working with said services, aiding you in completing your tasks fast and hassle-free! Fluke achieves this by:

• Wrapping object storage services within a File/Dir API inspired by the more familiar file storage, through which you are able to interact with your data no matter where they reside, be it the local file system, a remote server, or a bucket in the cloud.

• Greatly reducing the intricacies of working with message queues by viewing them as mere data structures that support three elementary operations, that is, push, peek, and poll.

Installation

You can start using Fluke by installing it via pip. Note that fluke requires Python >= 3.9.

pip install fluke-api

Usage Example

In this example, we will be using Fluke in order to:

1. Poll an Amazon SQS queue every minute for new messages. Each of these messages contains the path of a newly uploaded file to an Amazon S3 bucket.
2. Use said messages in order to locate the corresponding files and transfer them to a remote server.

First things first, we need to be able to authenticate with both AWS and the remote server. In order to achieve this, we will be importing from fluke.auth:

from fluke.auth import AWSAuth, RemoteAuth

# This object will be used to authenticate
# with AWS.
aws_auth = AWSAuth(
    aws_access_key_id="aws_access_key",
    aws_secret_access_key="aws_secret_key")

# This object will be used to authenticate
# with the remote machine.
rmt_auth = RemoteAuth.from_password(
    hostname="host",
    username="user",
    password="password")

Next, we just need to import from fluke.queues and fluke.storage so that we gain access to any necessary resources in order to perform the data transfer:

from fluke.queues import AmazonSQSQueue
from fluke.storage import AmazonS3Dir, RemoteDir

with (
    AmazonSQSQueue(auth=aws_auth, queue='queue') as queue,
    AmazonS3Dir(auth=aws_auth, bucket='bucket') as bucket,
    RemoteDir(auth=rmt_auth, path='/home/user/dir', create_if_missing=True) as rmt_dir
):
    for batch in queue.poll(polling_frequency=60):
        for msg in batch:
            bucket.get_file(path=msg).transfer_to(dst=rmt_dir)

And that's basically it!

You can learn more about Fluke by visiting the Fluke Documentation Page.