Asset Management for JVM Applications

Module 1 student lightning talk for Computer Science 580 at Allegheny College.

Transcript

1. Asset Management for JVM Applications Hawk Weisman weismanm@allegheny.edu http://hawkweisman.me Department of Computer Science Allegheny College February 20, 2015
2. The Problem: Asset Management Application software has to manage a diverse range of assets Graphics Sound Natives
3. The Problem: Asset Management Application software has to manage a diverse range of assets Graphics Sound Natives Challenges
4. The Problem: Asset Management Application software has to manage a diverse range of assets Graphics Sound Natives Challenges Consistency Assets stored in archives (zip/jar) Platform differences
5. The Problem: Asset Management Application software has to manage a diverse range of assets Graphics Sound Natives Challenges Consistency Assets stored in archives (zip/jar) Platform differences Modularity Patches from original developer: ‘expansions’ Patches from third parties: ‘modifications’
6. The Problem: Asset Management Application software has to manage a diverse range of assets Graphics Sound Natives Challenges Consistency Assets stored in archives (zip/jar) Platform differences Modularity Patches from original developer: ‘expansions’ Patches from third parties: ‘modifications’ Security
7. The Solution: The Virtual File System Idea Construct a virtual file system that fuses multiple directories into a new file system tree.
8. The Solution: The Virtual File System Idea Construct a virtual file system that fuses multiple directories into a new file system tree. Security Disallow reads/writes outside of VFS root (/)
9. The Solution: The Virtual File System Idea Construct a virtual file system that fuses multiple directories into a new file system tree. Security Disallow reads/writes outside of VFS root (/) Modularity Patches can be ‘spliced in’ by overwriting existing files Overwriting controlled through a load order policy Compatibility Archives mounted as directories Platforms with multiple content roots (i.e. Android) fused into one directory tree VFS handles OS or platform-specific details
10. Example: Before Melding assets/ textures/ a.png b.png sounds/ 1.ogg 2.ogg maps/ A.map B.map patchA.jar textures/ c.png d.png sounds/ 3.ogg patchB.jar textures/ c.png maps/ A.map
11. Example: After Melding / textures/ a.png b.png c.png d.png sounds/ 1.ogg 2.ogg 3.ogg maps/ A.map B.map
12. Previous Work UnionFS http://unionfs.filesystems.org Kernel-level extension Provides a union mount for POSIX devices Multiple open-source implementations C
13. Previous Work UnionFS http://unionfs.filesystems.org Kernel-level extension Provides a union mount for POSIX devices Multiple open-source implementations C Pathway Resource Manager https://github.com/MeteorCode/Pathway Component of the Pathway game engine Implemented by Hawk Weisman and Max Clive at MeteorCode Labs Scala/Java
14. Proposal Expand Pathway resource manager to a standalone library Improve core algorithm and architecture Use Java Security API to disallow writes outside of virtual file system Extend functionality to handle additional platforms, media types, natives Add idiomatic Scala functional API
15. Proposal Expand Pathway resource manager to a standalone library Improve core algorithm and architecture Use Java Security API to disallow writes outside of virtual file system Extend functionality to handle additional platforms, media types, natives Add idiomatic Scala functional API Evaluation Integration testing with edge cases Testing with ‘malicious’ code to ensure security Release as open-source library and collect user feedback