wehub-resource-sync
d68f003000
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87 lines
3.4 KiB
Markdown
87 lines
3.4 KiB
Markdown
# RFC: Persistence SQLite Migration
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### 1.1 `crates/state` — partial SQLite (rusqlite)
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**Backend**: SQLite via `rusqlite` (not sqlx).
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**Path**: `~/.deepseek/state.db`
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**Tables**: `threads`, `thread_dynamic_tools`, `messages`, `checkpoints`, `jobs`
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**Also**: `session_index.jsonl` — append-only JSONL for thread-name lookups.
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**Schema versioning**: none — table shape is versioned implicitly by the binary.
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### 1.2 `crates/tui/src/session_manager.rs` — JSON sessions
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**Backend**: individual JSON files + atomic writes via `write_atomic`.
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**Paths**:
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- `~/.codewhale/sessions/{id}.json` (preferred, v0.8.44+) or `~/.deepseek/sessions/{id}.json` (fallback)
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- `~/.deepseek/sessions/checkpoints/latest.json` — crash-recovery checkpoint
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- `~/.deepseek/sessions/checkpoints/offline_queue.json` — offline/degraded-mode queue
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**Schema constants**:
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- `CURRENT_SESSION_SCHEMA_VERSION: u32 = 1` (`SavedSession`)
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- `CURRENT_QUEUE_SCHEMA_VERSION: u32 = 1` (`OfflineQueueState`)
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**Policy**: reject-newer — older binary will refuse to load data written by a newer version.
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### 1.3 `crates/tui/src/runtime_threads.rs` — JSON runtime store
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**Backend**: per-record JSON files + append-only JSONL for events.
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**Paths** (under `~/.deepseek/tasks/runtime/` or `DEEPSEEK_RUNTIME_DIR`):
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- `threads/{id}.json`
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- `turns/{id}.json`
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- `items/{id}.json`
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- `events/{thread_id}.jsonl` — append-only JSONL event timeline
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- `state.json` — global monotonic sequence counter
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**Schema constants**:
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- `CURRENT_RUNTIME_SCHEMA_VERSION: u32 = 2`
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**Policy**: reject-newer.
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### 1.4 `crates/tui/src/task_manager.rs` — JSON task store
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**Backend**: per-record JSON files + atomic writes.
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**Paths** (under `~/.deepseek/tasks/` or `DEEPSEEK_TASKS_DIR`):
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- `{id}.json` — per-task records
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- `queue.json` — queue state
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**Schema constants**:
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- `CURRENT_TASK_SCHEMA_VERSION: u32 = 2`
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**Policy**: reject-newer.
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### 1.5 `crates/tui/src/automation_manager.rs` — JSON automation store
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**Backend**: per-record JSON files.
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**Paths** (under `~/.deepseek/automations/` or `DEEPSEEK_AUTOMATIONS_DIR`):
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- `{id}.json`
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**Schema constants**:
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- `CURRENT_AUTOMATION_SCHEMA_VERSION: u32 = 1`
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### 1.6 `crates/tui/src/audit.rs` — JSONL audit log
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**Backend**: append-only JSONL with fsync after each event.
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**Path**: `~/.deepseek/audit.log`
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**Schema**: no version field — each line is a `{"ts", "event", "details"}` blob.
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### 1.7 Summary of issues
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| Area | Backend | Schema Version | Write Strategy | Queryability |
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|------|---------|---------------|----------------|-------------|
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| state (threads/messages/jobs) | SQLite | implicit | direct SQL | SQL |
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| sessions | JSON files | v1 | atomic rename | file scan |
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| runtime threads/turns/items | JSON files | v2 | atomic rename | file scan |
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| runtime events | JSONL | v2 | append+fsync | linear scan |
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| tasks | JSON files | v2 | atomic rename | file scan |
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| automations | JSON files | v1 | atomic rename | file scan |
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| audit | JSONL | none | append+fsync | linear scan |
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**Key pain points**:
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1. **Listing** threads/sessions/tasks requires scanning directories and deserializing every file.
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2. **Filtering** (e.g., "all failed tasks in last 7 days") requires full scans.
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3. **No transactional consistency** — a crash between saving a turn and its items can leave orphans.
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4. **Event timeline growth** — JSONL append is O(n) for replay; no indexing.
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5. **Six different schema version constants** across four modules, each with the same reject-newer policy.
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