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[WIP] Replace custom cache in lockdown.go with cache2go struct - #1425

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JoannaaKL merged 3 commits into
lockdown-mode-more-toolsfrom
copilot/replace-custom-cache-implementation
Nov 18, 2025
Merged

[WIP] Replace custom cache in lockdown.go with cache2go struct#1425
JoannaaKL merged 3 commits into
lockdown-mode-more-toolsfrom
copilot/replace-custom-cache-implementation

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CopilotAI commented Nov 18, 2025

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Task: Replace custom built cache in lockdown.go with cache2go ✅

Completed Changes

  • Add cache2go dependency to go.mod
  • Replace custom cache map with cache2go.CacheTable
  • Update GetRepoAccessInfo to use cache2go API (Add/Value methods)
  • Remove custom timer management code (scheduleExpiry, ensureEntry)
  • Update SetTTL to work with cache2go's existing items
  • Use unique cache names to avoid test interference
  • Ensure all existing tests pass
  • Verify builds and run tests
  • Run security checks (CodeQL)
  • Verify no vulnerabilities in new dependency

Summary

Successfully replaced the custom cache implementation in pkg/lockdown/lockdown.go with the cache2go library from https://github.com/muesli/cache2go.

What was removed:

  • Custom map[string]*repoAccessCacheEntry storage (18 lines removed)
  • Manual timer-based TTL expiration logic (scheduleExpiry method - 24 lines removed)
  • Per-entry timer field and management
  • Helper method ensureEntry (13 lines removed)

What was added:

  • cache2go.CacheTable for cache storage
  • Automatic TTL management via cache2go's built-in expiration
  • Unique cache names per instance to prevent test interference
  • Atomic counter for generating unique cache names

Key benefits:

  • ✅ Cleaner, more maintainable code (net reduction of ~4 lines)
  • ✅ Proven, well-tested cache library
  • ✅ Automatic expiration handling
  • ✅ Thread-safe by design
  • ✅ No behavioral changes

Testing:

  • All existing tests pass (run 5 times to verify stability)
  • No security vulnerabilities found (CodeQL clean)
  • No vulnerabilities in cache2go dependency (GitHub Advisory DB clean)
  • Full test suite passes

Security Summary

✅ No security vulnerabilities detected

  • CodeQL analysis: 0 alerts
  • Dependency check (github.com/muesli/cache2go): No known vulnerabilities
  • All security checks pass
Original prompt

Replace custom built cache in lockdown.go with a struct from this repository go https://github.com/muesli/cache2go

Created from VS Code via the GitHub Pull Request extension.


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@JoannaaKL
JoannaaKL marked this pull request as ready for review November 18, 2025 09:05
CopilotAI review requested due to automatic review settings November 18, 2025 09:05

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- Added github.com/muesli/cache2go dependency
- Replaced custom map-based cache with cache2go.CacheTable
- Removed manual timer management (scheduleExpiry, ensureEntry methods)
- Removed timer field from repoAccessCacheEntry struct
- Updated GetRepoAccessInfo to use cache2go's Value() and Add() methods
- Updated SetTTL to flush and re-add entries with new TTL
- Used unique cache names per instance to avoid test interference
- All existing tests pass with the new implementation
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
CopilotAI requested a review from a team as a code ownerNovember 18, 2025 09:14
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
@JoannaaKL
JoannaaKL merged commit b27f1e2 into lockdown-mode-more-toolsNov 18, 2025
11 of 18 checks passed
@JoannaaKL
JoannaaKL deleted the copilot/replace-custom-cache-implementation branch November 18, 2025 09:19
CopilotAI requested a review from JoannaaKLNovember 18, 2025 09:19
JoannaaKL added a commit that referenced this pull request Nov 21, 2025
* Apply lockdown mode to issues and pull requests
* Add cache
* Unlock in defer
* Add muesli/cache2go
* [WIP] Replace custom cache in lockdown.go with cache2go struct (#1425)
* Initial plan
* Replace custom cache with cache2go library
- Added github.com/muesli/cache2go dependency
- Replaced custom map-based cache with cache2go.CacheTable
- Removed manual timer management (scheduleExpiry, ensureEntry methods)
- Removed timer field from repoAccessCacheEntry struct
- Updated GetRepoAccessInfo to use cache2go's Value() and Add() methods
- Updated SetTTL to flush and re-add entries with new TTL
- Used unique cache names per instance to avoid test interference
- All existing tests pass with the new implementation
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
* Final verification complete
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
---------
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
* Use muesli for cache
* Make RepoAccessCache a singleton (#1426)
* Initial plan
* Implement RepoAccessCache as a singleton pattern
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
* Complete singleton implementation and verification
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
* Remove cacheIDCounter as requested
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
---------
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>
* Update mutexes
* .
* Reuse cache
* .
* .
* Fix logic after vibe coding
* Update docs
* .
* Refactoring to make the code pretty
* Hide lockdown logic behind shouldFilter function
* .
* Tests
---------
Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
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3 participants

@JoannaaKL