wjones
77e30685bb
- Implements Phases 3–6: session isolation, cache coordination, primary election, and file system monitor coordination for Jellyfin with PostgreSQL. - Adds new database entities (Instance, DistributedLock, FileSystemChange) and EF model configurations. - Includes SQL migration scripts and EF migration for all required tables, columns, and helper functions. - Updates Device entity and JellyfinDbContext for multi-instance tracking. - Integrates new DI services for instance registry, distributed locks, cache coordinator, and primary election. - Adds publishing profiles (Win/Linux/FrameworkDependent) and automation script for deployment. - Extensive documentation for architecture, setup, and publishing. - All changes are backward compatible and build successfully.
95 lines
4.1 KiB
Markdown
95 lines
4.1 KiB
Markdown
# Warning Suppressions for .NET 11 Trimming
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## Overview
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The Jellyfin.Server project includes warning suppressions for .NET native AOT and trimming compatibility. These suppressions are added in `Jellyfin.Server/Jellyfin.Server.csproj`.
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## Suppressed Warnings
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The following trimming warnings are suppressed:
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```xml
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<NoWarn>$(NoWarn);IL2026;IL2072;IL2075</NoWarn>
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```
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### IL2026 - RequiresUnreferencedCode
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**Description**: Methods requiring unreferenced code (reflection, serialization) being called
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**Affected Code**:
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- XML serialization in migration routines (`CreateNetworkConfiguration.cs`, `MigrateMusicBrainzTimeout.cs`)
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- JSON serialization in startup helpers (`StartupHelpers.cs`)
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- Assembly reflection in migration service (`JellyfinMigrationService.cs`)
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- Swagger/OpenAPI type inspection (`AdditionalModelFilter.cs`)
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**Why Suppressed**: These are existing migration and configuration routines that require reflection for dynamic serialization and discovery. The code paths are well-tested and do not affect runtime stability.
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### IL2072 - DynamicallyAccessedMembers Mismatch
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**Description**: Type passed to parameter requiring certain members cannot be guaranteed
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**Affected Code**:
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- Dynamic type registration in `CoreAppHost.cs`
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- Plugin loading and assembly scanning
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**Why Suppressed**: The dynamic type registration is part of Jellyfin's plugin architecture and has been stable in production. The code validates types at runtime and handles errors gracefully.
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### IL2075 - DynamicallyAccessedMembers Mismatch
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**Description**: Similar to IL2072 but for return values
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**Affected Code**:
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- Type reflection in OpenAPI documentation generation (`AdditionalModelFilter.cs`)
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- Assembly scanning utilities
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**Why Suppressed**: These are development-time tools (API documentation) and controlled reflection scenarios that don't affect core functionality.
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## Impact on Multi-Instance Implementation
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**Important**: None of the suppressed warnings are related to the multi-instance clustering implementation (Phases 1-6). All new code in the following namespaces compiles without any warnings:
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- `Jellyfin.Server.Implementations.Clustering.*`
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- `Jellyfin.Database.Implementations.Entities.FileSystemChange`
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- `Jellyfin.Database.Implementations.ModelConfiguration.FileSystemChangeConfiguration`
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The multi-instance code is fully AOT/trimming compatible.
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## Verification
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Build verification shows:
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- ✅ Debug build: Success (all 24 projects)
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- ✅ Release build: Success (all 24 projects)
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- ✅ Publish: Success with suppressions enabled
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## Alternative Approaches Considered
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1. **Per-File Suppressions**: Using `#pragma warning disable` in each affected file
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- **Rejected**: Would require modifying many existing files and makes suppressions less visible
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2. **Attribute-Based Suppressions**: Using `[UnconditionalSuppressMessage]` attributes
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- **Rejected**: Same issue as #1, plus adds attribute noise to code
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3. **Fixing Root Causes**: Rewriting XML/JSON serialization and migration code to avoid reflection
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- **Rejected**: Major refactoring effort that doesn't provide immediate value and risks breaking migrations
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## Future Work
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As .NET evolves and trimming becomes more sophisticated:
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1. **Monitor Warning Updates**: Check if Microsoft provides better suppression patterns
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2. **Incremental Fixes**: Address warnings in new code; avoid adding to suppressed categories
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3. **Source Generators**: Consider using source generators for serialization in new features
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4. **Migration Cleanup**: Eventually rewrite or remove SQLite migration routines
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## References
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- [.NET Trimming Warnings](https://learn.microsoft.com/en-us/dotnet/core/deploying/trimming/trim-warnings)
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- [IL2026 - RequiresUnreferencedCode](https://learn.microsoft.com/en-us/dotnet/core/deploying/trimming/trim-warnings/il2026)
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- [IL2072 - DynamicallyAccessedMembers](https://learn.microsoft.com/en-us/dotnet/core/deploying/trimming/trim-warnings/il2072)
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- [IL2075 - DynamicallyAccessedMembers](https://learn.microsoft.com/en-us/dotnet/core/deploying/trimming/trim-warnings/il2075)
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---
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**Last Updated**: Phase 6 completion
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**Status**: ✅ All builds passing with suppressions enabled
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