Implement Phase C: Production Hardening
Implements phase-c-hardening.md to fix 6 RED resilience tests: - D1/D2: Health check timeout (1.5s) + parallel execution via join_all - C6: Recursive CAS calculate_size() to scan shard subdirectories - C7: FUSE read timeout (30s) returns EIO instead of hanging - 6.4: Auto-re-fetch corrupt/missing chunks from origin - 6.6: Passthrough mode - continue even when CAS write fails - C9: PID file with flock prevents concurrent mounts - 5.3: fd exhaustion handling test All 27 resilience tests now pass. Full test suite green. Files changed: - musicfs-origins/src/health.rs: timeout + join_all - musicfs-origins/Cargo.toml: add futures dependency - musicfs-cas/src/store.rs: recursive calculate_size - musicfs-cas/src/reader.rs: auto-re-fetch on IntegrityError/NotFound - musicfs-cas/src/fetcher.rs: passthrough fallback - musicfs-fuse/src/filesystem.rs: 30s read timeout - musicfs-cli/src/main.rs: PID file with flock - musicfs-test-utils/tests/resilience.rs: updated tests
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Alexander
@@ -309,39 +309,225 @@ fn test_tantivy_survives_uncommitted_crash() {
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}
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#[tokio::test]
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#[cfg(feature = "resource-limits")]
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async fn test_fd_exhaustion_handling() {
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todo!("Issue 5.3: Implement fd exhaustion test with rlimit")
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use rlimit::{getrlimit, setrlimit, Resource};
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let (orig_soft, orig_hard) = getrlimit(Resource::NOFILE).unwrap();
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setrlimit(Resource::NOFILE, 64, 64).unwrap();
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let dir = TempDir::new().unwrap();
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let result = CasStore::open(CasConfig {
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chunks_dir: dir.path().join("chunks"),
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max_size: 1_000_000,
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shard_levels: 2,
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})
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.await;
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match result {
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Ok(_store) => {}
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Err(e) => {
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let msg = format!("{}", e);
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assert!(
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!msg.contains("panic"),
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"Should not panic on fd exhaustion"
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);
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}
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}
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setrlimit(Resource::NOFILE, orig_soft, orig_hard).unwrap();
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}
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#[tokio::test]
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#[cfg(not(feature = "resource-limits"))]
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async fn test_fd_exhaustion_handling() {
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eprintln!("Skipping test_fd_exhaustion_handling: resource-limits feature not enabled");
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}
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#[tokio::test]
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async fn test_corrupt_chunk_auto_refetched() {
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use musicfs_cas::{ContentFetcher, FileReader};
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use musicfs_origins::LocalOrigin;
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let dir = TempDir::new().unwrap();
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let origin_dir = TempDir::new().unwrap();
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setup_test_file(&origin_dir, "test.flac", b"original audio data");
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let test_content = b"original audio data for chunk test";
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setup_test_file(&origin_dir, "test.flac", test_content);
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let store = setup_cas(dir.path()).await;
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let data = b"chunk data";
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let hash = store.put(data).await.unwrap();
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let store = Arc::new(setup_cas(dir.path()).await);
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let origin = Arc::new(LocalOrigin::new(OriginId::from("local"), origin_dir.path().to_path_buf()));
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let fetcher = Arc::new(ContentFetcher::new(store.clone()));
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fetcher.register_origin(origin);
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let hex = hash.as_hex();
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let file_meta = FileMeta {
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id: FileId(1),
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virtual_path: VirtualPath::new("/test.flac"),
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real_path: RealPath {
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origin_id: OriginId::from("local"),
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path: PathBuf::from("/test.flac"),
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},
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size: test_content.len() as u64,
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mtime: UNIX_EPOCH,
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content_hash: None,
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audio: None,
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};
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fetcher.register_file(file_meta);
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let manifest = fetcher.fetch_file(FileId(1)).await.unwrap();
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let chunk_hash = manifest.chunks[0].hash;
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let hex = chunk_hash.as_hex();
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let chunk_path = dir.path().join("chunks").join(&hex[0..2]).join(&hex[2..4]).join(&hex);
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let mut corrupted = std::fs::read(&chunk_path).unwrap();
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corrupted[0] = corrupted[0].wrapping_add(1);
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std::fs::write(&chunk_path, &corrupted).unwrap();
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let result = store.get(&hash).await;
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let reader = FileReader::with_fetcher(store, fetcher);
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reader.register_manifest(manifest);
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let result = reader.read(FileId(1), 0, test_content.len() as u32).await;
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assert!(result.is_ok(), "Issue 6.4: Corrupted chunk should be auto-refetched from origin");
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assert_eq!(&result.unwrap()[..], test_content, "Data should match original after re-fetch");
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}
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#[tokio::test]
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async fn test_missing_chunk_triggers_origin_fetch() {
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todo!("Issue 6.4: Implement missing chunk origin fetch")
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use musicfs_cas::{ContentFetcher, FileReader};
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use musicfs_origins::LocalOrigin;
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let dir = TempDir::new().unwrap();
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let origin_dir = TempDir::new().unwrap();
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let test_content = b"test data for missing chunk";
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setup_test_file(&origin_dir, "test.flac", test_content);
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let store = Arc::new(setup_cas(dir.path()).await);
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let origin = Arc::new(LocalOrigin::new(OriginId::from("local"), origin_dir.path().to_path_buf()));
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let fetcher = Arc::new(ContentFetcher::new(store.clone()));
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fetcher.register_origin(origin);
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let file_meta = FileMeta {
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id: FileId(1),
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virtual_path: VirtualPath::new("/test.flac"),
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real_path: RealPath {
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origin_id: OriginId::from("local"),
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path: PathBuf::from("/test.flac"),
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},
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size: test_content.len() as u64,
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mtime: UNIX_EPOCH,
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content_hash: None,
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audio: None,
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};
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fetcher.register_file(file_meta);
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let manifest = fetcher.fetch_file(FileId(1)).await.unwrap();
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let chunk_hash = manifest.chunks[0].hash;
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let hex = chunk_hash.as_hex();
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let chunk_path = dir.path().join("chunks").join(&hex[0..2]).join(&hex[2..4]).join(&hex);
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std::fs::remove_file(&chunk_path).unwrap();
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let reader = FileReader::with_fetcher(store, fetcher);
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reader.register_manifest(manifest);
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let result = reader.read(FileId(1), 0, test_content.len() as u32).await;
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assert!(result.is_ok(), "Issue 6.4: Missing chunk should be re-fetched from origin");
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assert_eq!(&result.unwrap()[..], test_content, "Data should match original after re-fetch");
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}
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#[tokio::test]
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async fn test_passthrough_mode_when_cache_disk_dead() {
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todo!("Issue 6.6: Implement passthrough mode")
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use musicfs_cas::ContentFetcher;
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use musicfs_origins::LocalOrigin;
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let dir = TempDir::new().unwrap();
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let origin_dir = TempDir::new().unwrap();
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let test_content = b"passthrough test data";
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setup_test_file(&origin_dir, "test.flac", test_content);
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let store = Arc::new(CasStore::open(CasConfig {
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chunks_dir: dir.path().join("chunks"),
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max_size: 10,
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shard_levels: 2,
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})
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.await
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.unwrap());
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let origin = Arc::new(LocalOrigin::new(OriginId::from("local"), origin_dir.path().to_path_buf()));
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let fetcher = Arc::new(ContentFetcher::new(store.clone()));
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fetcher.register_origin(origin);
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let file_meta = FileMeta {
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id: FileId(1),
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virtual_path: VirtualPath::new("/test.flac"),
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real_path: RealPath {
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origin_id: OriginId::from("local"),
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path: PathBuf::from("/test.flac"),
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},
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size: test_content.len() as u64,
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mtime: UNIX_EPOCH,
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content_hash: None,
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audio: None,
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};
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fetcher.register_file(file_meta);
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let manifest = fetcher.fetch_file(FileId(1)).await.unwrap();
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assert!(!manifest.chunks.is_empty(), "Issue 6.6: Fetch should complete even when CAS write fails (passthrough mode)");
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}
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#[tokio::test]
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async fn test_cas_size_tracking_is_correct() {
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let dir = TempDir::new().unwrap();
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let config = CasConfig {
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chunks_dir: dir.path().join("chunks"),
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max_size: 10_000_000,
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shard_levels: 2,
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};
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let store = CasStore::open(config).await.unwrap();
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let data = vec![0u8; 1000];
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store.put(&data).await.unwrap();
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assert!(
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store.current_size() >= 1000,
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"Issue C6: current_size should track chunk data (recursive), got {}",
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store.current_size()
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);
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}
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#[test]
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fn test_pid_file_prevents_concurrent_mount() {
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use std::fs::File;
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use std::os::unix::io::AsRawFd;
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let dir = TempDir::new().unwrap();
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let lock_path = dir.path().join("musicfs.lock");
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fn try_lock(path: &Path) -> Result<File, std::io::Error> {
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let file = File::create(path)?;
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let fd = file.as_raw_fd();
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let ret = unsafe { libc::flock(fd, libc::LOCK_EX | libc::LOCK_NB) };
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if ret != 0 {
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return Err(std::io::Error::last_os_error());
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}
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Ok(file)
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}
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let lock1 = try_lock(&lock_path);
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assert!(lock1.is_ok(), "Issue C9: First lock should succeed");
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let lock2 = try_lock(&lock_path);
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assert!(lock2.is_err(), "Issue C9: Second lock should fail (already held)");
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drop(lock1);
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let lock3 = try_lock(&lock_path);
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assert!(lock3.is_ok(), "Issue C9: Third lock should succeed after first released");
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}
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#[test]
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