64 lines
3.2 KiB
Markdown
64 lines
3.2 KiB
Markdown
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# Internal Architecture
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OxiCloud follows a **hexagonal (ports & adapters) architecture** with four layers:
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```
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┌───────────────────────────────────────────────────────────────┐
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│ Interfaces │ REST API, WebDAV, CalDAV, CardDAV, WOPI │
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├───────────────────────────────────────────────────────────────┤
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│ Application │ Use cases, DTOs, port definitions │
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├───────────────────────────────────────────────────────────────┤
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│ Domain │ Entities, business rules, repository traits │
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├───────────────────────────────────────────────────────────────┤
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│ Infrastructure│ PostgreSQL, filesystem, caching, auth │
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└───────────────────────────────────────────────────────────────┘
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```
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All cross-layer dependencies point **inward** via trait-based ports. The DI container (`AppServiceFactory`) wires concrete implementations at startup.
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## Storage Model: 100% Blob Storage
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- **File metadata** (name, folder, size, user, timestamps, trash status) → PostgreSQL (`storage.files`)
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- **File content** → content-addressed blobs via DedupService at `.blobs/{prefix}/{hash}.blob`
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- **Folder structure** → purely virtual, rows in `storage.folders` (no filesystem directories per user)
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- **Trash** → soft-delete flags on files/folders, exposed via `storage.trash_items` VIEW
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## Dependency Injection
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`AppServiceFactory` in `src/common/di.rs` builds all services in a defined order:
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1. **Core services** — paths, content cache, thumbnails, chunked upload, transcode, dedup, compression
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2. **Repositories** — `FolderDbRepository`, `FileBlobReadRepository`, `FileBlobWriteRepository`, `TrashDbRepository`
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3. **Trash service** (if enabled)
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4. **Application services** — folder, file upload/retrieval/management, search, i18n
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5. **Share service** (if enabled)
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6. **DB services** — favorites, recent, storage usage, auth
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7. **CalDAV/CardDAV services**
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8. **ZIP service** (last, depends on file & folder services)
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9. **Assemble `AppState`**
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## Project Structure
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```
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src/
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├── common/ # Config, DI container, errors
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├── domain/ # Entities, repository traits
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├── application/ # Use cases, DTOs, port traits
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├── infrastructure/ # PostgreSQL repos, filesystem, caching
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└── interfaces/ # HTTP handlers, WebDAV, CalDAV, CardDAV
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```
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## Key Metrics
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| Metric | Value |
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|--------|-------|
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| Rust source files | ~170 |
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| Lines of code | ~50 000 |
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| Automated tests | 222+ |
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| Docker image | ~40 MB |
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## Further Reading
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- [Caching Architecture →](/architecture/caching)
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- [Storage Quotas →](/architecture/storage-quotas)
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