baseplate.py

Caution

This repository has been archived and is no longer maintained.

It's much easier to manage a bunch of services when they all have the same shape: the way they're developed, the way they interact with the infrastructure they run on, and the way they interact with each other. Baseplate is reddit's specification for the common shape of our services. This library, Baseplate.py, is the Python implementation of that specification.

Baseplate.py glues together tooling for interacting with the reddit backend ecosystem and spackles over things that are missing. It integrates with Apache Thrift, Pyramid, and client libraries for many systems to transparently make your applications observable.

Baseplate applications transparently get:

Timing and request rate metrics using statsd
Distributed tracing with Zipkin
Error reporting and aggregation with Sentry

And can take advantage of:

Integration with commonly used clients like: Thrift, SQLAlchemy, cassandra-driver, pymemcache, redis-py, and Kombu
Secrets securely pulled from Vault

And many other things!

pre-commit

Documentation

This repo comes with pre-commit hooks that let you (on a voluntary basis) enable pre-commit and/or pre-push hooks.

Configuration can be found at the root of the directory in .pre-commit-config.yaml. On its own, the configuration file doesn't do anything. You either need to run the hooks manually or install them so that they run automatically on every commit or push.

Currently, we run the make fmt target on commit and make lint / pytest actions on push.

Specific hooks can be temporarily disabled.

You can install hooks only for a specific step (i.e. pre-push).

Testing in Snoodev

You can upgrade any service to use in development Baseplate code in Snoodev by editing the requirements file for the service you would like to use for testing. Update the the Baseplate requirement to pull from Github instead, like this:

diff --git a/requirements.txt b/requirements.txt
index aef8ad8..d32a078 100644
--- a/requirements.txt
+++ b/requirements.txt
-baseplate==2.5.7
+git+https://github.com/reddit/baseplate.py@<ref>#egg=baseplate

In this case the ref can be either a commit hash or a branch name. After making this update you can check if the service works in Snoodev.

Warning Never deploy this change to production. Production should always use a Baseplate semantic version that has been tagged, and released.

License

reddit/baseplate.py

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