Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

ModuleAPI: Provide mechanism for modules to perform async initialisation (that is allowed to fail)

See original GitHub issue

To carry over what was raised here:

Currently a module is instantiated via its __init__ method, which (as a magic method) shouldn’t really be async (as far as I know). What if we have a use-case that involves asynchronous initialisation of a module? E.g. Let’s say we need to translate some non-local room aliases into room IDs on module initialisation and want to report an error (to Synapse) if that fails.

When I say “allowed to fail” (in the title), I mean similarly to how a module’s parse_config static method may fail in a controlled manner.

Issue Analytics

State:
Created a year ago
Comments:10 (10 by maintainers)

Top GitHub Comments

1reaction

erikjohnstoncommented, Jul 29, 2022

Side thought: perhaps adding a prometheus metric that you can then alert on might give you want you want?

1reaction

erikjohnstoncommented, Jul 29, 2022

No worries! If it turns out there is a use case feel free to reopen 👍

Top Results From Across the Web

AngularJS : Initialize service with asynchronous data

You can, for example, use the module.constant mechanism to make data available to your app: myApp.constant('myAppConfig', data);.

Async Provider Initialization #525 - Urigo/graphql-modules

Is there a way to do initialization of providers that involves asynchronous steps? I want to do something like connect to the database...

Initialization, Finalization, and Threads — Python 3.11.1 ...

In an application embedding Python, the Py_Initialize() function must be called before using any other Python/C API functions; with the exception of a...

Async hooks | Node.js v19.3.0 Documentation

The node:async_hooks module provides an API to track asynchronous resources. It can be accessed using: import async_hooks from 'node:async_hooks'; ...

The Proper Way to Write Async Constructors in JavaScript

The Solution: Static Async Factory Functions! In the first workaround, I hinted at how the constructor may return arbitrary non-primitive ...