Miserlou/Zappa

Feature Proposal: Django Management Commands on Deploy // More Event-Based Hooks

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#715 opened on Mar 11, 2017

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 (29 comments) (0 reactions) (0 assignees)Python (11,903 stars) (1,286 forks)batch import
enhancementhelp wanted

Description

I think I'm up for implementing this feature, but wanted to make sure you don't see a problem with it first:

I'd like to be able to run a Django Management command on deployments. I could do this with a "post" callback handler, but I'd have to write a good bit of custom Python code to facilitate it. What I'd like to be able to do is something in the settings like:

"deploy_management_commands": [
  "sqlmigrate",
  "loaddata my_fixtures"
],
"update_management_commands": [
  "sqlmigrate",
]

And have the "deploy_management_commands" run on deployment of the environment, and "update_management_commands" run on updates to the environment.

If this doesn't seem like a patch you'd be interested, I'll implement it as my own "post" callback.

Contributor guide

Tech stack
pythonaws
Domain
backenddevops
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Knowledge of Django management commandsFamiliarity with Zappa's deployment flow
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
First, review the existing callback implementation in Zappa's source code (likely in `zappa/core.py` or similar) to understand how post deployment hooks are handled. Then, examine the configuration parsing to see how new settings like `deploy management commands` and `update management commands` could be added. Check the issue comments (especially from maintainer Steve) for any guidance or objections. Consider implementing a proof of concept that runs Django management commands via `manage.py` using subprocess or Django's call command, and ensure it works within the AWS Lambda environment.