Diffing asset bundles

Hey, just wondering if there are any tools out there to detect changes in asset bundles, or if there's a solution inside Unity?

Basically I want to know which asset bundles have actually changed data so I can bump their versions. It's hard to keep track of changes manually, especially after weeks of development and when you have the memory of a fly.

How do people handle this? Is it always a manual process of keeping track of asset changes?

Thanks

 

The manifest the build process generates creates hash values for every bundle, which can be used to check if the contents have changed. You can store and keep track of the hash yourself or if you use the caching api and unitywebrequest it has methods of handling that for you.

https://docs.unity3d.com/ScriptReference/Networking.UnityWebRequest.GetAssetBundle.html

If you pass a hash it will check for a locally cached version with that hash, and download it only if it isn't present.

 

Thanks, looks like I can create a simple editor tool to load and compare folders of asset bundles

 

What about the changes between unity versions?
It seems that the hash changes according to the unity version:

https://forum.unity.com/threads/project-update-gives-all-assets-a-new-crc.523074/