Long Running Snap Controller (Research possibilities and potential implementation)

[david0xd]

This ticket will continue research work from https://github.com/MetaMask/MetaMask-planning/issues/517

Research how snaps can run safely and reliably for a long time by implementing part of a solution (proof of concept) with long running controller using web workers. Final approach should show that it is possible to support the needs for long running snaps which are doing long processing like zero knowledge proofs.

The main criteria for research:

• Try to find a way that would remove snap execution timeouts
• Research the web worker API in terms of performance tracking
• Find possible ways to measure the performance of the web workers
  Taken from live discussions and ticket comments: https://github.com/MetaMask/MetaMask-planning/issues/517#issuecomment-1580503133

Document describing potential solutions for background (long running) tasks from previous research: https://docs.google.com/document/d/13Zeh9VykvFPGwZFsSw1vIFEJDjBayKKGKTKCOin61vw/edit?usp=sharing (Useful to look at Intelligent Snap Controller proposal).

[kenhkan]

From 1:1 with David: Pointed this ticket at 13 for conservatism

[kenhkan]

Moved to engineering backlog until David returns from FTE transition

[david0xd]

Research report document: https://docs.google.com/document/d/1dzbxwAQ2-Fgj4SrOEaF-dS9AoTPVsUt5eCTIGQVrDUI/edit?usp=sharing
Internal use only.

Document summary: Web Worker Performance Tracking and Potential Use of it to Control Snaps Execution
Content summary:

• Web Workers performance tracking by validating responses and measuring time frames
• Other (mostly inconsistent or experimental) ways for performance tracking
• Ideas for integrating and handling the performance measurement approach in Snaps

This part of the research is deprecated and replaced with Long Running Snaps for Synchronous Work.

[david0xd]

Based on the previous research and team discussions, a new document is created to make a conclusion: https://docs.google.com/document/d/1BsL75IiepnS1rbfzOVJ5xX3YS3W79Hmyk725lydsqq8/edit?usp=sharing

[kenhkan]

From standup:

• @Montoya to read the document in David' last comment
• David to create two new tickets from the first round of work. Closing this afterwards.

[david0xd]

Closing this with the results mentioned in the comment that will conclude this part of the research.

Document: https://docs.google.com/document/d/1BsL75IiepnS1rbfzOVJ5xX3YS3W79Hmyk725lydsqq8/edit
Task following the proposed implementation: #1604