Add CLI implementation and MVP performance review
- Implement functional CLI with clap argument parsing - Add directory scanning and metadata extraction at startup - Fix filesystem.rs to store tokio Handle for async/sync bridge - Fix flake.nix with LD_LIBRARY_PATH for libfuse3 - Add MVP performance review with real-world benchmark results Benchmarks show: - Mount time: 8ms (target <500ms) - Throughput: 2-3 GB/s (target >500 MB/s) - Identifies critical gap: incomplete file caching (only ~2MB per file) - Identifies missing CDC chunking per architecture spec
This commit is contained in:
Alexander
@@ -0,0 +1,239 @@
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# MusicFS MVP Performance Review
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**Date**: 2026-05-12
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**Test Data**: Metallica - 72 Seasons (12 FLAC tracks, 625MB, 16-bit/44.1kHz)
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**Origin**: Local filesystem (Docker volume)
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**System**: Linux, NixOS
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---
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## Executive Summary
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**Phase 1 MVP is functional** - the system mounts, browses, and reads files successfully. Audio playback works with valid FLAC headers served. However, there's a **critical gap** between the architecture specification and current implementation regarding content chunking.
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---
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## Benchmark Results
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### Throughput Comparison
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| Metric | Direct FS | MusicFS Cold | MusicFS Warm | Target (Spec) | Status |
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|--------|-----------|--------------|--------------|---------------|--------|
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| Single file read (64MB) | 0.022s (3 GB/s) | 0.035s (1.8 GB/s) | 0.020s (3.2 GB/s) | >500 MB/s | ✅ |
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| Full album read (625MB) | 0.149s (4.2 GB/s) | 0.274s (2.3 GB/s) | 0.211s (3.0 GB/s) | >500 MB/s | ✅ |
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### Metadata Operations
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| Operation | Result | Target (Spec) | Status |
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|-----------|--------|---------------|--------|
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| Root listing | 0.006s | <10ms | ✅ |
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| Full tree traversal (12 files) | 0.007s | <50ms | ✅ |
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| stat() per operation | 0.003s | <1ms | ⚠️ |
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| 4KB small reads (per op) | 0.006s | <1ms | ⚠️ |
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| Random seek 1MB | 0.008-0.015s | <50ms | ✅ |
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| Mount time | ~8ms | <500ms | ✅ |
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### Cache Performance
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| Metric | Value |
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|--------|-------|
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| Cache speedup (single file) | 1.75x |
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| Cache speedup (full album) | 1.30x |
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| Cache size | 25MB |
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| Chunk count | 12 |
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| Expected cache size | 625MB |
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### FUSE Overhead
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| Scenario | Overhead vs Direct |
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|----------|-------------------|
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| Single file cold cache | 59% slower |
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| Single file warm cache | 9% faster* |
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| Full album cold cache | 84% slower |
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| Full album warm cache | 42% slower |
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*Warm cache appears faster due to OS page cache effects on both paths.
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---
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## What's Working Well ✅
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### 1. Mount Performance
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- Mount completes in ~8ms (spec: <500ms) — **62x better than target**
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- O(1) mount time achieved — no file scanning blocks mount
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- Lazy loading working as designed per architecture section 4.3.1
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### 2. Virtual Tree Organization
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- Correct Artist/Album/Track hierarchy derived from metadata
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- Example path: `/Metallica/72 Seasons/01. 72 Seasons.flac`
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- Special character sanitization working (`/`, `\`, `:`, etc.)
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### 3. File Reading
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- Valid FLAC headers served (`fLaC` magic bytes verified)
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- Sequential reads work correctly
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- Random access (seek) functional
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- Concurrent reads from multiple processes work
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### 4. FUSE Integration
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- Read-only enforcement (EROFS returned on write attempts)
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- Proper inode assignment and file attributes
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- AllowOther mount option working
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- Clean unmount via fusermount3
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### 5. Throughput
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- Exceeds 500 MB/s target significantly (2-3 GB/s achieved)
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- Parallel reads scale appropriately (4 files in 0.060s)
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---
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## Critical Issues 🔴
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### Issue 1: Incomplete File Caching
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**Symptom**: Cache is 25MB instead of expected 625MB (12 files × ~2MB each instead of full files)
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**Root Cause**: In `fetcher.rs:74`:
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```rust
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let data = origin.read(&meta.real_path.path, 0, meta.size as u32).await?;
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```
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And in `local.rs:96-98`:
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```rust
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let mut buffer = vec![0u8; size as usize];
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let bytes_read = file.read(&mut buffer).await?;
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buffer.truncate(bytes_read);
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```
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`tokio::fs::File::read()` reads **up to** buffer size but returns when the kernel buffer is exhausted (~2MB typical). Only first ~2MB of each file is being cached.
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**Impact**:
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- Subsequent reads beyond 2MB offset hit origin every time
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- No cache benefit for majority of file content
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- Cache eviction policy not being exercised
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**Required Fix**: Use `read_to_end()` or loop until all bytes read:
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```rust
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let mut buffer = Vec::with_capacity(size as usize);
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file.read_to_end(&mut buffer).await?;
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```
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### Issue 2: No CDC Chunking Implemented
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**Architecture Spec** (Section 4.3.2):
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> "All file content is stored as content-addressed chunks... Avg chunk: 64KB, Min: 16KB, Max: 256KB"
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**Current Implementation**: Each file stored as ONE chunk (no FastCDC integration)
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**Impact**:
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- No content deduplication possible
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- Delta sync impossible (FR-11.2 unmet)
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- Cache efficiency severely reduced for similar files
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---
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## Architecture Gaps 🟡
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| Spec Requirement | Current State | Gap |
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|------------------|---------------|-----|
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| CDC chunking (64KB avg) | No chunking | Missing FastCDC integration |
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| Delta sync (>90% bandwidth reduction) | Not implemented | Requires CDC first |
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| Deduplication (FR-20) | Not implemented | Requires CDC first |
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| Search engine (tantivy) | Not implemented | Phase 3 scope |
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| gRPC Control API | Not implemented | Phase 4 scope |
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| Multi-origin federation | Single origin only | Phase 2 scope |
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| Metadata persistence (SQLite) | In-memory HashMap | Missing persistence |
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---
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## Performance Analysis
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### Why Warm Cache Appears Faster Than Direct FS
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The warm cache shows 3.2 GB/s vs direct 3.0 GB/s because:
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1. OS page cache is warm for both MusicFS chunks AND origin files
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2. Both measurements are essentially hitting RAM, variance expected
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3. MusicFS chunks may have slightly better cache locality
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### stat() Latency Above Target
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Current: 3ms per stat() vs target <1ms
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Possible causes:
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1. `RwLock<VirtualTree>` contention overhead
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2. HashMap lookup plus FUSE context switch
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3. Measurement includes full round-trip through FUSE
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Mitigation options:
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- Consider lock-free concurrent data structures
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- Implement finer-grained locking
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- Cache hot inodes in separate fast-path structure
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---
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## Recommendations
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### Immediate Fixes (Before Phase 2)
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1. **Fix file reading** — Use `read_to_end()` or implement proper streaming read loop
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2. **Add CDC chunking** — Integrate FastCDC per architecture spec section 4.3.2
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3. **Persist metadata** — Move from in-memory HashMap to SQLite as specified
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### Phase 2 Priorities
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1. Complete CDC chunking implementation (prerequisite for delta sync)
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2. Add SQLite metadata persistence (FR-7.2)
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3. Implement multi-origin support (FR-13)
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### Testing Gaps to Address
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1. No automated E2E tests for real FUSE operations
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2. No stress testing with concurrent access patterns
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3. No large library testing (target: 1M+ files per NFR-3.1)
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4. No offline mode testing (origin unavailable scenarios)
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---
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## Test Environment Details
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```
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Origin Path: /home/fujin/.local/share/docker/volumes/containers_downloads/_data/Metallica - 72 Seasons (2023) [FLAC] 88/
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Mount Point: /tmp/musicfs-benchmark/mount
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Cache Dir: /tmp/musicfs-benchmark/cache
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Binary: target/release/musicfs (via nix develop)
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Files:
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01. 72 Seasons.flac 64MB
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02. Shadows Follow.flac 50MB
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03. Screaming Suicide.flac 45MB
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04. Sleepwalk My Life Away.flac 54MB
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05. You Must Burn!.flac 57MB
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06. Lux Æterna.flac 27MB
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07. Crown Of Barbed Wire.flac 46MB
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08. Chasing Light.flac 55MB
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09. If Darkness Had A Son.flac 51MB
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10. Too Far Gone_.flac 37MB
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11. Room Of Mirrors.flac 45MB
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12. Inamorata.flac 89MB
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Total: 625MB, 12 tracks
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```
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---
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## Conclusion
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**The MVP demonstrates core functionality works** — mounting, browsing, and reading audio files through FUSE. Throughput performance exceeds targets significantly.
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However, **the cache implementation is incomplete**:
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- Only ~4% of file content is being cached (25MB/625MB)
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- No CDC chunking means no deduplication or delta sync capability
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- Architecture requirements FR-8.2, FR-11.2, FR-20 are unmet
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**Recommendation**: Fix the file reading issue and add CDC chunking before proceeding to Phase 2. The architecture is sound; implementation needs to catch up to specification.
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---
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## References
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- [Architecture Specification](architecture.md) — Section 4.3.2 (CAS), Section 4.3.5 (Read Flow)
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- [Requirements Specification](requirements.md) — FR-8 (Content Cache), FR-11 (Delta Sync), FR-20 (CAS)
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- [Week 4b Plan](plans/week-04b-origin-connector.md) — ContentFetcher implementation
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Generated
+232
@@ -14,6 +14,65 @@ dependencies = [
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"zerocopy 0.8.48",
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]
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[[package]]
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||||
name = "aho-corasick"
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||||
version = "1.1.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
|
||||
dependencies = [
|
||||
"memchr",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "anstream"
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||||
version = "1.0.0"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "824a212faf96e9acacdbd09febd34438f8f711fb84e09a8916013cd7815ca28d"
|
||||
dependencies = [
|
||||
"anstyle",
|
||||
"anstyle-parse",
|
||||
"anstyle-query",
|
||||
"anstyle-wincon",
|
||||
"colorchoice",
|
||||
"is_terminal_polyfill",
|
||||
"utf8parse",
|
||||
]
|
||||
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[[package]]
|
||||
name = "anstyle"
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||||
version = "1.0.14"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000"
|
||||
|
||||
[[package]]
|
||||
name = "anstyle-parse"
|
||||
version = "1.0.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "52ce7f38b242319f7cabaa6813055467063ecdc9d355bbb4ce0c68908cd8130e"
|
||||
dependencies = [
|
||||
"utf8parse",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "anstyle-query"
|
||||
version = "1.1.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
|
||||
dependencies = [
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "anstyle-wincon"
|
||||
version = "3.0.11"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
|
||||
dependencies = [
|
||||
"anstyle",
|
||||
"once_cell_polyfill",
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "anyhow"
|
||||
version = "1.0.102"
|
||||
@@ -89,6 +148,52 @@ version = "1.0.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
|
||||
|
||||
[[package]]
|
||||
name = "clap"
|
||||
version = "4.6.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1ddb117e43bbf7dacf0a4190fef4d345b9bad68dfc649cb349e7d17d28428e51"
|
||||
dependencies = [
|
||||
"clap_builder",
|
||||
"clap_derive",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clap_builder"
|
||||
version = "4.6.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "714a53001bf66416adb0e2ef5ac857140e7dc3a0c48fb28b2f10762fc4b5069f"
|
||||
dependencies = [
|
||||
"anstream",
|
||||
"anstyle",
|
||||
"clap_lex",
|
||||
"strsim",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clap_derive"
|
||||
version = "4.6.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f2ce8604710f6733aa641a2b3731eaa1e8b3d9973d5e3565da11800813f997a9"
|
||||
dependencies = [
|
||||
"heck",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "clap_lex"
|
||||
version = "1.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
|
||||
|
||||
[[package]]
|
||||
name = "colorchoice"
|
||||
version = "1.0.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
|
||||
|
||||
[[package]]
|
||||
name = "crc32fast"
|
||||
version = "1.5.0"
|
||||
@@ -325,6 +430,12 @@ dependencies = [
|
||||
"cfg-if",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "is_terminal_polyfill"
|
||||
version = "1.70.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
|
||||
|
||||
[[package]]
|
||||
name = "itoa"
|
||||
version = "1.0.18"
|
||||
@@ -390,6 +501,15 @@ version = "0.4.29"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
|
||||
|
||||
[[package]]
|
||||
name = "matchers"
|
||||
version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
|
||||
dependencies = [
|
||||
"regex-automata",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "memchr"
|
||||
version = "2.8.0"
|
||||
@@ -446,6 +566,20 @@ dependencies = [
|
||||
[[package]]
|
||||
name = "musicfs-cli"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"clap",
|
||||
"dirs",
|
||||
"musicfs-cache",
|
||||
"musicfs-cas",
|
||||
"musicfs-core",
|
||||
"musicfs-fuse",
|
||||
"musicfs-metadata",
|
||||
"musicfs-origins",
|
||||
"tokio",
|
||||
"tracing",
|
||||
"tracing-subscriber",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "musicfs-core"
|
||||
@@ -508,6 +642,15 @@ version = "0.1.0"
|
||||
name = "musicfs-sync"
|
||||
version = "0.1.0"
|
||||
|
||||
[[package]]
|
||||
name = "nu-ansi-term"
|
||||
version = "0.50.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
|
||||
dependencies = [
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "num-traits"
|
||||
version = "0.2.19"
|
||||
@@ -523,6 +666,12 @@ version = "1.21.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
|
||||
|
||||
[[package]]
|
||||
name = "once_cell_polyfill"
|
||||
version = "1.70.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
|
||||
|
||||
[[package]]
|
||||
name = "option-ext"
|
||||
version = "0.2.0"
|
||||
@@ -662,6 +811,23 @@ dependencies = [
|
||||
"thiserror",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-automata"
|
||||
version = "0.4.14"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f"
|
||||
dependencies = [
|
||||
"aho-corasick",
|
||||
"memchr",
|
||||
"regex-syntax",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "regex-syntax"
|
||||
version = "0.8.10"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
|
||||
|
||||
[[package]]
|
||||
name = "rmp"
|
||||
version = "0.8.15"
|
||||
@@ -763,6 +929,15 @@ dependencies = [
|
||||
"zmij",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "sharded-slab"
|
||||
version = "0.1.7"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
|
||||
dependencies = [
|
||||
"lazy_static",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "shlex"
|
||||
version = "1.3.0"
|
||||
@@ -811,6 +986,12 @@ dependencies = [
|
||||
"windows-sys 0.61.2",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "strsim"
|
||||
version = "0.11.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
|
||||
|
||||
[[package]]
|
||||
name = "symphonia"
|
||||
version = "0.5.5"
|
||||
@@ -988,6 +1169,15 @@ dependencies = [
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thread_local"
|
||||
version = "1.1.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tokio"
|
||||
version = "1.52.3"
|
||||
@@ -1045,6 +1235,36 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
|
||||
dependencies = [
|
||||
"once_cell",
|
||||
"valuable",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracing-log"
|
||||
version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
|
||||
dependencies = [
|
||||
"log",
|
||||
"once_cell",
|
||||
"tracing-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracing-subscriber"
|
||||
version = "0.3.23"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
|
||||
dependencies = [
|
||||
"matchers",
|
||||
"nu-ansi-term",
|
||||
"once_cell",
|
||||
"regex-automata",
|
||||
"sharded-slab",
|
||||
"smallvec",
|
||||
"thread_local",
|
||||
"tracing",
|
||||
"tracing-core",
|
||||
"tracing-log",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@@ -1059,6 +1279,18 @@ version = "0.2.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
|
||||
|
||||
[[package]]
|
||||
name = "utf8parse"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
|
||||
|
||||
[[package]]
|
||||
name = "valuable"
|
||||
version = "0.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
|
||||
|
||||
[[package]]
|
||||
name = "vcpkg"
|
||||
version = "0.2.15"
|
||||
|
||||
@@ -50,5 +50,8 @@ bytes = "1"
|
||||
# Platform directories
|
||||
dirs = "5"
|
||||
|
||||
# CLI
|
||||
clap = { version = "4", features = ["derive"] }
|
||||
|
||||
# Testing
|
||||
tempfile = "3"
|
||||
|
||||
@@ -8,3 +8,16 @@ name = "musicfs"
|
||||
path = "src/main.rs"
|
||||
|
||||
[dependencies]
|
||||
musicfs-core.path = "../musicfs-core"
|
||||
musicfs-origins.path = "../musicfs-origins"
|
||||
musicfs-cache.path = "../musicfs-cache"
|
||||
musicfs-cas.path = "../musicfs-cas"
|
||||
musicfs-fuse.path = "../musicfs-fuse"
|
||||
musicfs-metadata.path = "../musicfs-metadata"
|
||||
|
||||
clap.workspace = true
|
||||
tokio.workspace = true
|
||||
tracing.workspace = true
|
||||
tracing-subscriber.workspace = true
|
||||
anyhow.workspace = true
|
||||
dirs.workspace = true
|
||||
|
||||
@@ -1,3 +1,195 @@
|
||||
fn main() {
|
||||
println!("MusicFS CLI - placeholder");
|
||||
use anyhow::{Context, Result};
|
||||
use clap::Parser;
|
||||
use musicfs_cache::TreeBuilder;
|
||||
use musicfs_cas::{CasConfig, CasStore, ContentFetcher, FileReader};
|
||||
use musicfs_core::{FileId, FileMeta, OriginId, RealPath, VirtualPath};
|
||||
use musicfs_fuse::MusicFs;
|
||||
use musicfs_metadata::MetadataParser;
|
||||
use musicfs_origins::{LocalOrigin, Origin};
|
||||
use std::path::{Path, PathBuf};
|
||||
use std::sync::{Arc, RwLock};
|
||||
use std::time::SystemTime;
|
||||
use tracing::{debug, info};
|
||||
|
||||
#[derive(Parser)]
|
||||
#[command(name = "musicfs")]
|
||||
#[command(about = "Virtual FUSE filesystem for music libraries")]
|
||||
struct Cli {
|
||||
#[arg(help = "Mount point for the virtual filesystem")]
|
||||
mountpoint: PathBuf,
|
||||
|
||||
#[arg(short, long, help = "Source music directory (origin)")]
|
||||
origin: PathBuf,
|
||||
|
||||
#[arg(short, long, help = "Cache directory for CAS chunks")]
|
||||
cache_dir: Option<PathBuf>,
|
||||
|
||||
#[arg(short, long, default_value = "info", help = "Log level (debug, info, warn, error)")]
|
||||
log_level: String,
|
||||
}
|
||||
|
||||
fn main() -> Result<()> {
|
||||
let cli = Cli::parse();
|
||||
|
||||
init_logging(&cli.log_level);
|
||||
|
||||
let runtime = tokio::runtime::Runtime::new().context("Failed to create Tokio runtime")?;
|
||||
let handle = runtime.handle().clone();
|
||||
|
||||
let (tree, reader) = runtime.block_on(async {
|
||||
info!("MusicFS starting...");
|
||||
info!("Origin: {:?}", cli.origin);
|
||||
info!("Mountpoint: {:?}", cli.mountpoint);
|
||||
|
||||
let cache_dir = cli.cache_dir.unwrap_or_else(|| {
|
||||
dirs::cache_dir()
|
||||
.unwrap_or_else(|| PathBuf::from("/tmp"))
|
||||
.join("musicfs")
|
||||
});
|
||||
info!("Cache directory: {:?}", cache_dir);
|
||||
|
||||
std::fs::create_dir_all(&cache_dir).context("Failed to create cache directory")?;
|
||||
std::fs::create_dir_all(&cli.mountpoint).context("Failed to create mountpoint")?;
|
||||
|
||||
let cas_config = CasConfig {
|
||||
chunks_dir: cache_dir.join("chunks"),
|
||||
..Default::default()
|
||||
};
|
||||
let store = Arc::new(CasStore::open(cas_config).await.context("Failed to open CAS store")?);
|
||||
info!("CAS store initialized");
|
||||
|
||||
let origin_id = OriginId::from("local");
|
||||
let origin = Arc::new(LocalOrigin::new(origin_id.clone(), cli.origin.clone()));
|
||||
info!("Origin registered: {}", origin.display_name());
|
||||
|
||||
let fetcher = Arc::new(ContentFetcher::new(store.clone()));
|
||||
fetcher.register_origin(origin);
|
||||
|
||||
info!("Scanning music files...");
|
||||
let files = scan_music_files(&cli.origin, &origin_id).await?;
|
||||
info!("Found {} music files", files.len());
|
||||
|
||||
let mut builder = TreeBuilder::new();
|
||||
for file in &files {
|
||||
builder.add_file(file);
|
||||
fetcher.register_file(file.clone());
|
||||
}
|
||||
let tree = Arc::new(RwLock::new(builder.build()));
|
||||
info!("Virtual tree built");
|
||||
|
||||
let reader = Arc::new(FileReader::with_fetcher(store, fetcher));
|
||||
|
||||
Ok::<_, anyhow::Error>((tree, reader))
|
||||
})?;
|
||||
|
||||
let fs = MusicFs::with_reader(tree, reader, handle);
|
||||
|
||||
info!("Mounting filesystem at {:?}", cli.mountpoint);
|
||||
info!("Press Ctrl+C to unmount");
|
||||
|
||||
fs.mount(&cli.mountpoint).context("Failed to mount filesystem")?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn init_logging(level: &str) {
|
||||
use tracing_subscriber::{fmt, prelude::*, EnvFilter};
|
||||
|
||||
let filter = EnvFilter::try_from_default_env()
|
||||
.unwrap_or_else(|_| EnvFilter::new(level));
|
||||
|
||||
tracing_subscriber::registry()
|
||||
.with(fmt::layer())
|
||||
.with(filter)
|
||||
.init();
|
||||
}
|
||||
|
||||
async fn scan_music_files(dir: &Path, origin_id: &OriginId) -> Result<Vec<FileMeta>> {
|
||||
let parser = MetadataParser::new();
|
||||
let mut files = Vec::new();
|
||||
let mut file_id_counter = 1i64;
|
||||
|
||||
scan_dir_recursive(dir, dir, origin_id, &parser, &mut files, &mut file_id_counter).await?;
|
||||
|
||||
Ok(files)
|
||||
}
|
||||
|
||||
async fn scan_dir_recursive(
|
||||
base: &Path,
|
||||
dir: &Path,
|
||||
origin_id: &OriginId,
|
||||
parser: &MetadataParser,
|
||||
files: &mut Vec<FileMeta>,
|
||||
id_counter: &mut i64,
|
||||
) -> Result<()> {
|
||||
let mut entries = tokio::fs::read_dir(dir).await?;
|
||||
|
||||
while let Some(entry) = entries.next_entry().await? {
|
||||
let path = entry.path();
|
||||
let metadata = entry.metadata().await?;
|
||||
|
||||
if metadata.is_dir() {
|
||||
Box::pin(scan_dir_recursive(base, &path, origin_id, parser, files, id_counter)).await?;
|
||||
} else if is_audio_file(&path) {
|
||||
let relative_path = path.strip_prefix(base).unwrap_or(&path);
|
||||
|
||||
let audio_meta = match parser.parse_file(&path) {
|
||||
Ok(meta) => Some(meta),
|
||||
Err(e) => {
|
||||
debug!("Failed to parse metadata for {:?}: {}", path, e);
|
||||
None
|
||||
}
|
||||
};
|
||||
|
||||
let virtual_path = build_virtual_path(&path, audio_meta.as_ref());
|
||||
|
||||
let file_meta = FileMeta {
|
||||
id: FileId(*id_counter),
|
||||
virtual_path,
|
||||
real_path: RealPath {
|
||||
origin_id: origin_id.clone(),
|
||||
path: PathBuf::from("/").join(relative_path),
|
||||
},
|
||||
size: metadata.len(),
|
||||
mtime: metadata.modified().unwrap_or(SystemTime::UNIX_EPOCH),
|
||||
content_hash: None,
|
||||
audio: audio_meta,
|
||||
};
|
||||
|
||||
debug!("Found: {:?} -> {:?}", file_meta.real_path.path, file_meta.virtual_path);
|
||||
files.push(file_meta);
|
||||
*id_counter += 1;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn is_audio_file(path: &Path) -> bool {
|
||||
matches!(
|
||||
path.extension().and_then(|e| e.to_str()).map(|e| e.to_lowercase()).as_deref(),
|
||||
Some("flac" | "mp3" | "ogg" | "wav" | "m4a" | "aac" | "opus")
|
||||
)
|
||||
}
|
||||
|
||||
fn build_virtual_path(path: &Path, audio: Option<&musicfs_core::AudioMeta>) -> VirtualPath {
|
||||
if let Some(meta) = audio {
|
||||
let artist = meta.artist.as_deref().unwrap_or("Unknown Artist");
|
||||
let album = meta.album.as_deref().unwrap_or("Unknown Album");
|
||||
let filename = path.file_name().and_then(|n| n.to_str()).unwrap_or("track");
|
||||
|
||||
VirtualPath::new(&format!("/{}/{}/{}", sanitize(artist), sanitize(album), filename))
|
||||
} else {
|
||||
let filename = path.file_name().and_then(|n| n.to_str()).unwrap_or("unknown");
|
||||
VirtualPath::new(&format!("/Unknown Artist/Unknown Album/{}", filename))
|
||||
}
|
||||
}
|
||||
|
||||
fn sanitize(s: &str) -> String {
|
||||
s.chars()
|
||||
.map(|c| match c {
|
||||
'/' | '\\' | ':' | '*' | '?' | '"' | '<' | '>' | '|' => '_',
|
||||
_ => c,
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
|
||||
@@ -9,6 +9,7 @@ use std::ffi::OsStr;
|
||||
use std::path::Path;
|
||||
use std::sync::{Arc, RwLock};
|
||||
use std::time::{Duration, SystemTime};
|
||||
use tokio::runtime::Handle;
|
||||
use tracing::{debug, info, warn};
|
||||
|
||||
const TTL: Duration = Duration::from_secs(1);
|
||||
@@ -17,24 +18,27 @@ const BLOCK_SIZE: u32 = 512;
|
||||
pub struct MusicFs {
|
||||
tree: Arc<RwLock<VirtualTree>>,
|
||||
reader: Option<Arc<FileReader>>,
|
||||
runtime_handle: Handle,
|
||||
uid: u32,
|
||||
gid: u32,
|
||||
}
|
||||
|
||||
impl MusicFs {
|
||||
pub fn new(tree: Arc<RwLock<VirtualTree>>) -> Self {
|
||||
pub fn new(tree: Arc<RwLock<VirtualTree>>, runtime_handle: Handle) -> Self {
|
||||
Self {
|
||||
tree,
|
||||
reader: None,
|
||||
runtime_handle,
|
||||
uid: unsafe { libc::getuid() },
|
||||
gid: unsafe { libc::getgid() },
|
||||
}
|
||||
}
|
||||
|
||||
pub fn with_reader(tree: Arc<RwLock<VirtualTree>>, reader: Arc<FileReader>) -> Self {
|
||||
pub fn with_reader(tree: Arc<RwLock<VirtualTree>>, reader: Arc<FileReader>, runtime_handle: Handle) -> Self {
|
||||
Self {
|
||||
tree,
|
||||
reader: Some(reader),
|
||||
runtime_handle,
|
||||
uid: unsafe { libc::getuid() },
|
||||
gid: unsafe { libc::getgid() },
|
||||
}
|
||||
@@ -241,8 +245,11 @@ impl Filesystem for MusicFs {
|
||||
};
|
||||
|
||||
let reader = reader.clone();
|
||||
let result = tokio::runtime::Handle::current().block_on(async {
|
||||
let handle = self.runtime_handle.clone();
|
||||
let result = std::thread::scope(|_| {
|
||||
handle.block_on(async {
|
||||
reader.read(file_id, offset as u64, size).await
|
||||
})
|
||||
});
|
||||
|
||||
match result {
|
||||
@@ -410,11 +417,14 @@ mod tests {
|
||||
|
||||
#[test]
|
||||
fn test_tree_integration() {
|
||||
let runtime = tokio::runtime::Runtime::new().unwrap();
|
||||
let handle = runtime.handle().clone();
|
||||
|
||||
let mut builder = TreeBuilder::new();
|
||||
builder.add_file(&make_file_meta(1, "/Artist/Album/Track.flac", 30_000_000));
|
||||
let tree = Arc::new(RwLock::new(builder.build()));
|
||||
|
||||
let _fs = MusicFs::new(tree.clone());
|
||||
let _fs = MusicFs::new(tree.clone(), handle);
|
||||
|
||||
let tree_read = tree.read().unwrap();
|
||||
assert!(tree_read.get(ROOT_INODE).is_some());
|
||||
|
||||
+2
-4
@@ -18,7 +18,7 @@
|
||||
};
|
||||
in
|
||||
{
|
||||
devShells.default = pkgs.mkShell {
|
||||
devShells.default = pkgs.mkShell rec {
|
||||
buildInputs = with pkgs; [
|
||||
rustToolchain
|
||||
pkg-config
|
||||
@@ -26,20 +26,18 @@
|
||||
sqlite
|
||||
openssl
|
||||
|
||||
# Linker toolchain
|
||||
clang
|
||||
lld
|
||||
|
||||
# Dev tools
|
||||
cargo-watch
|
||||
cargo-nextest
|
||||
cargo-criterion
|
||||
|
||||
# gRPC tooling (Week 10+)
|
||||
protobuf
|
||||
grpcurl
|
||||
];
|
||||
|
||||
LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath buildInputs;
|
||||
RUST_BACKTRACE = "1";
|
||||
RUST_LOG = "debug";
|
||||
};
|
||||
|
||||
Reference in New Issue
Block a user