fix(session-query): make persisted observation non-mutating
This commit is contained in:
Hypatia May
@@ -464,6 +464,10 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
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signature: 'abstract load(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>',
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jsDoc: '/**\n * Load a header and balanced contiguous log. A complete interrupted final\n * turn is preserved and durably closed with missing tool errors plus any open\n * step and turn boundaries; only a torn final record is discarded. Unknown\n * versions and corruption in the committed prefix reject.\n * @param id - the persisted session to reload.\n * @returns the header and a log ending on a balanced `turn/end`.\n */',
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},
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{
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signature: 'abstract inspect(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>',
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jsDoc: '/**\n * Inspect a header and its valid contiguous stored prefix without repairing\n * a torn tail, closing an interrupted turn, or publishing coordinator state.\n * This read is serialized with writes for the same id and returns detached\n * values, so observers cannot mutate backend-owned state.\n * @param id - the persisted session to inspect.\n * @returns the header and valid stored event prefix exactly as observed.\n */',
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},
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{
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signature: 'abstract list(): Promise<SessionHeader[]>',
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jsDoc: '/**\n * Lightweight listing from metadata, without a full-log parse.\n * @returns one header per materialized session.\n */',
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@@ -19,6 +19,9 @@ class TestPersistence extends SessionPersistence {
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load(_id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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return Promise.reject(new Error('not used'))
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}
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inspect(_id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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return Promise.reject(new Error('not used'))
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}
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list(): Promise<SessionHeader[]> { return Promise.resolve([]) }
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listSnapshots(): Promise<never[]> { return Promise.resolve([]) }
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}
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@@ -37,6 +37,7 @@ A root belongs to one encoding. Startup discovery and targeted lookup reject the
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- **Lazy materialization.** `create(meta)` writes nothing; on the first `append`, the backend writes and `fsync`s the encoded header and first batch in a temporary file. POSIX publishes it without overwrite via a hard link and `fsync`s the parent directory. Windows publishes it without overwrite via `MoveFileExW(..., MOVEFILE_WRITE_THROUGH)` and creates missing directories through the same write-through pattern. A created-but-never-appended session leaves nothing on disk and is absent from `list`.
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- **Append-only.** Flushed events are never rewritten. Subsequent raw batches append lines; compressed batches append one frame. Both paths `fsync`, and a caught write or sync failure rolls the file back to its prior byte length.
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- **Crash recovery — preserve valid tail work.** `load` validates every complete compressed frame and scans their decompressed JSONL. If the last frame is structurally incomplete, the reader keeps its complete decoded records, truncates from that frame's start, and re-encodes those records with the synthetic tool, step, and turn closers required by the shared [persistence contract](../../../.agents/notes/implemented/architecture/2026-06-14-session-persistence.md). Raw mode truncates from its first incomplete line. A checksum/decompression failure in a complete frame, or a defect at or before the last committed `turn/end`, is corruption and rejects.
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- **Non-mutating inspection.** `inspect()` returns the detached valid prefix without truncating an incomplete tail or closing an interrupted turn, and leaves the lightweight revision unchanged.
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- **Contiguous-seq.** `append` rejects a batch whose first `seq` does not continue the stored log, and rejects non-JSON-serializable `event.data` naming the offending event type.
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- **Lightweight revisions.** `listSnapshots()` identifies a log by its device, inode, size, and nanosecond timestamps, avoiding a full-log parse while changing after append, repair, replacement, or store changes.
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@@ -131,6 +131,10 @@ export class SessionPersistenceJsonl extends SessionPersistence implements Persi
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return this.coordinator.load(id)
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}
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inspect(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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return this.coordinator.inspect(id)
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}
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// One method serves both public `list` and the backend hook; delegating it to
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// the coordinator would call this hook recursively.
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@@ -19,6 +19,7 @@ On filesystems with POSIX modes, the backend requests mode `0700` for missing di
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- **Append = a transaction.** `append` runs `BEGIN`/`COMMIT` around the batch: it materializes the `sessions` row (if still lazy) and INSERTs every event, asserting the contiguous-seq contract first (the first event's `seq` must equal the stored next-seq). A mid-batch failure (a UNIQUE violation on a duplicated seq) rolls back entirely, so the stored log and the in-memory cursor stay consistent. (`load()` already balanced the stored log, so `append` never has to repair a crash tail.)
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- **Lazy materialization.** `create()` records intent in memory only — no row is written until the first `append`. A created-but-never-appended session has no `sessions` row, so it is absent from `list()` (which reports exactly the sessions that have a row).
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- **Interrupted-turn close on load.** `load()` implements the shared [crash-recovery contract](../../../.agents/notes/implemented/architecture/2026-06-14-session-persistence.md): preserve the valid interrupted turn, append its synthetic closing events in one transaction, and remove only a torn tail row. Committed parse errors or sequence gaps make the session unloadable. Because recovery mutates stored rows, the next append starts from a balanced log and accurate cursor.
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- **Non-mutating inspection.** `inspect()` returns the detached valid row prefix without deleting a torn tail row or appending recovery closers, and leaves the lightweight revision unchanged.
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- **Lightweight revisions.** `listSnapshots()` combines the immutable store and database-file identity, a per-materialization incarnation id, and a per-session counter incremented in each mutating transaction. This keeps unchanged observations stable without parsing event rows and distinguishes independent stores and recreated same-id logs.
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## Configuration (schemastery)
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@@ -157,6 +157,10 @@ export class SessionPersistenceSqlite extends SessionPersistence implements Pers
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return this.coordinator.load(id)
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}
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inspect(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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return this.coordinator.inspect(id)
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}
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// One method serves both public `list` and the backend hook; delegating it to
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// the coordinator would call this hook recursively.
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@@ -12,6 +12,7 @@ The persisted unit IS the existing `SessionEvent` (event-sourced model — the l
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| `create(meta): Promise<void>` | Register a new session's metadata. MAY defer the physical write until the first `append` (lazy materialization). |
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| `append(id, events): Promise<void>` | Durably persist a batch (from the `session/flush` drain). Append-only; first event `seq` == stored next-seq after any repair; rejects non-JSON-serializable data naming the offending type. |
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| `load(id): Promise<{ meta; events }>` | Reload meta + log. Preserves an interrupted (unclosed) final turn and closes it with synthetic closers — an error `tool/result` per unanswered `tool-call`, then `step/end?`+`turn/end {interrupted}` (a turn can be huge — never truncated); only a torn tail fragment is dropped. Events contiguous (`events[i].seq === i`); rejects a committed-region gap/parse error or unknown `version`. |
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| `inspect(id): Promise<{ meta; events }>` | Return a detached valid stored prefix without truncating a torn tail, synthesizing recovery closers, or publishing coordinator state. Serialized with same-id writes; intended for read models and other observers that must never recover a log. |
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| `list(): Promise<SessionHeader[]>` | Lightweight listing from metadata, no full-log parse. A zero-event lazily-materialized session is absent from `list`. |
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| `listSnapshots(): Promise<SessionPersistenceSnapshot[]>` | Lightweight metadata plus an opaque branded per-log revision, without loading event logs. A revision stays equal while that log and its backing store are unchanged, changes after append or mutating load repair, and cannot collide solely because two stores use the same local counter. |
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@@ -37,13 +38,13 @@ The `PersistenceBackend<TornMarker>` hooks (the only seam between the coordinato
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| Hook | Role |
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|---|---|
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| `name` | Backend label for the dispose-failure `AggregateError`. |
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| `loadStored(id)` | Read a stored prefix by id across every storage scope. Used by resume/load, live adoption, and the create-collision probe. Returned metadata identifies `id`; an opaque `tornMarker` is present iff a torn tail must be truncated. |
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| `loadStored(id)` | Read a stored prefix by id across every storage scope. Used by resume/load, non-mutating inspect, live adoption, and the create-collision probe. Returned metadata identifies `id`; an opaque `tornMarker` is present iff a torn tail must be truncated. |
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| `appendBatch(meta, events, isMaterialized)` | Durably append a contiguous batch, lazily materializing ATOMICALLY when not yet materialized. |
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| `commitRepair(meta, tornMarker, closers)` | Make a crash repair durable: truncate the torn tail (iff `tornMarker !== undefined` — a marker may be falsy, e.g. seq/offset `0`) and append `closers`. NOT required to be atomic. Used by load (truncate + closers) and live-adoption (truncate only). |
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| `list()` | List all stored metadata. |
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| `close?()` | Optional lifecycle teardown (e.g. close a db handle), awaited after the dispose drain. |
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The coordinator asserts the stored id and compares stored/live cwd before repair or live adoption. The `tornMarker` is fully OPAQUE: the coordinator only tests `!== undefined` and round-trips it to `commitRepair`, never inspecting its value (the JSONL backend uses the byte offset to truncate to, the SQLite backend the seq to delete from). A third-party backend MAY implement the abstract service directly without the coordinator, but it must also provide trustworthy lightweight snapshot revisions. See [the write-coordinator Agent Note](../../../.agents/notes/implemented/architecture/2026-06-18-shared-persistence-write-coordinator.md).
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The coordinator asserts the stored id and compares stored/live cwd before repair or live adoption. Its `inspect()` path validates and clones the prefix without calling `commitRepair` or publishing write state. The `tornMarker` is fully OPAQUE: the coordinator only tests `!== undefined` and round-trips it to `commitRepair`, never inspecting its value (the JSONL backend uses the byte offset to truncate to, the SQLite backend the seq to delete from). A third-party backend MAY implement the abstract service directly without the coordinator, but it must provide the same non-mutating inspection and trustworthy lightweight snapshot revisions. See [the write-coordinator Agent Note](../../../.agents/notes/implemented/architecture/2026-06-18-shared-persistence-write-coordinator.md).
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## Testing backends
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@@ -252,6 +252,28 @@ export class PersistenceCoordinator<TornMarker = unknown> {
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return this.serialize(id, () => this.loadCore(id))
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}
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/**
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* Read a detached valid stored prefix without recovery mutations or
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* coordinator-state publication.
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* @param id - persisted session to inspect.
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* @returns stored header and events before any synthetic recovery closers.
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*/
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inspect(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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return this.serialize(id, () => this.inspectCore(id))
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}
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private async inspectCore(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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const stored = await this.backend.loadStored(id)
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if (stored === undefined) throw new Error(`session "${id}" not found`)
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this.assertStoredId(id, stored.meta)
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this.assertVersion(stored.meta)
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assertSupportedEvents(stored.events, id)
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return {
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meta: structuredClone(stored.meta),
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events: structuredClone(stored.events),
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}
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}
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private async loadCore(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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const stored = await this.backend.loadStored(id)
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if (stored === undefined) throw new Error(`session "${id}" not found`)
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@@ -93,6 +93,16 @@ export abstract class SessionPersistence extends Service {
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*/
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abstract load(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>
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/**
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* Inspect a header and its valid contiguous stored prefix without repairing
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* a torn tail, closing an interrupted turn, or publishing coordinator state.
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* This read is serialized with writes for the same id and returns detached
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* values, so observers cannot mutate backend-owned state.
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* @param id - the persisted session to inspect.
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* @returns the header and valid stored event prefix exactly as observed.
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*/
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abstract inspect(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }>
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/**
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* Lightweight listing from metadata, without a full-log parse.
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* @returns one header per materialized session.
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@@ -99,6 +99,15 @@ export function runPersistenceContract(name: string, make: () => Promise<Contrac
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const beforeRepair = (await persistence.listSnapshots())
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.find(snapshot => snapshot.header.id === m.id)?.revision
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const inspected = await persistence.inspect(m.id)
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const afterInspect = (await persistence.listSnapshots())
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.find(snapshot => snapshot.header.id === m.id)?.revision
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expect(afterInspect).toBe(beforeRepair)
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expect(inspected.events.map(e => e.type)).toEqual([
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'turn/start', 'user/message', 'step/start', 'assistant/message', 'step/end', 'turn/end',
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'turn/start', 'step/start',
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])
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// load PRESERVES the interrupted turn's events (a turn can be huge — they
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// must not be truncated) and closes the orphaned turn with synthetic
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// boundary events: step/end (the step was open) then turn/end {interrupted}.
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@@ -643,11 +643,12 @@ export function runCoordinatorContract(name: string, makeFixture: () => Promise<
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}
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})
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it('load rejects a missing session', async () => {
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it('load and inspect reject a missing session', async () => {
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const fix = await makeFixture()
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const { ctx, fiber } = await freshCtx(fix)
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try {
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await expect(ctx.sessionPersistence.load(SessionId('nope'))).rejects.toThrow(/not found/)
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await expect(ctx.sessionPersistence.inspect(SessionId('nope'))).rejects.toThrow(/not found/)
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} finally {
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await fiber.dispose()
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await fix.cleanup()
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@@ -96,6 +96,10 @@ class MemoryPersistence extends SessionPersistence implements PersistenceBackend
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return this.coordinator.load(id)
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}
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inspect(id: SessionId): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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return this.coordinator.inspect(id)
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}
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// --- PersistenceBackend hooks (the Map storage primitives) ---
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// A Map-backed store has no torn tails, so `tornMarker` is never set.
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@@ -12,11 +12,11 @@ All three surfaces (`current`, `shadowed`, and `log-only`) are searchable by def
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## Source and index lifecycle
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The service requires `ctx.sessions` and observes optional `ctx.sessionPersistence` dynamically. One serialized state machine compares source-qualified lightweight durable snapshot revisions, loads only new or changed logs, extracts shared semantic documents, reconciles changes transactionally, and runs the query. It never invokes the persistence backend's mutating `load()` for an id currently owned by `ctx.sessions`; the TEMP live row still records persisted availability, and the durable base refreshes after that live owner detaches. Repeated queries and unchanged same-store reopen load no full durable logs; switching stores, or observing new, changed, deleted, or load-repaired sources, reconciles on the next stable observation. Source or transaction failure commits nothing, and the next search retries.
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The service requires `ctx.sessions` and observes optional `ctx.sessionPersistence` dynamically. One serialized state machine compares source-qualified lightweight durable snapshot revisions, non-mutatingly inspects only new or changed logs, extracts shared semantic documents, reconciles changes transactionally, and runs the query. Session queries never invoke the persistence backend's crash-repairing `load()`; an owner attaching during inspection cannot mutate its log, and the stable-observation retry makes the result live-preferred. The TEMP live row still records persisted availability, and the durable base refreshes after that live owner detaches. Repeated queries and an unchanged same-store reopen perform no full durable-log inspection; switching stores, or observing new, changed, deleted, or externally load-repaired sources, reconciles on the next stable observation. Source or transaction failure commits nothing, and the next search retries.
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Persisted FTS rows live in a dedicated derived database. Connection-local TEMP tables hold live rows, which shadow the durable base for the same session and reveal it when the live owner disappears. Unmounting persistence hides durable rows without discarding the cache; remounting reconciles it. Closing or reopening the database drops every live overlay while retaining persisted rows.
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The database is disposable but reset is guarded: a recognized incompatible search schema rebuilds in place, while an unrelated or canonical database is refused before mutating journal mode. Never point `path` at the session-persistence database. On filesystems with POSIX modes, missing directories and databases are created owner-only (`0700` and `0600` before the process umask), and SQLite sidecars inherit the database mode; existing modes are preserved. Exactly one service in one process owns a derived-index path; external writers or a second process are unsupported because generations and TEMP shadow state are connection-owned.
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The database is disposable but reset is guarded: every recognized schema version rejects unknown user tables before mutating journal mode, and only a recognized incompatible schema containing derived tables rebuilds in place. An unrelated or canonical database is refused. Never point `path` at the session-persistence database. On filesystems with POSIX modes, missing directories and databases are created owner-only (`0700` and `0600` before the process umask), and SQLite sidecars inherit the database mode; existing modes are preserved. Exactly one service in one process owns a derived-index path; external writers or a second process are unsupported because generations and TEMP shadow state are connection-owned.
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## Configuration
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@@ -438,11 +438,12 @@ export class SessionQuerySqlite extends SessionQueryService {
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persisted = materializePersistenceSnapshots(before)
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for (const entry of persisted.values()) {
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if (canReuseIndexed && indexed.get(entry.header.id)?.revision === entry.revision) continue
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// `load()` may durably repair an interrupted tail. Never invoke it
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// for a session currently owned by the live store: a checkpointed
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// open turn is active, not crash-interrupted.
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// Skip work already shadowed by a live owner. `inspect()` is
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// non-mutating, so an owner attaching after this check cannot cause
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// crash-repair side effects; the live-membership retry below makes
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// the returned observation live-preferred.
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if (initiallyLive.has(entry.header.id) || this.ctx.sessions.get(entry.header.id) !== undefined) continue
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const loaded = await waitWithAbort(persistence.load(entry.header.id), signal)
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const loaded = await waitWithAbort(persistence.inspect(entry.header.id), signal)
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assertSessionHeadersCompatible(entry.header, loaded.meta)
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entry.loaded = observeSession(loaded.meta, loaded.events)
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}
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@@ -60,8 +60,9 @@ export async function openSearchDatabase(path: string, journalMode: JournalMode)
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if (applicationId === 0 && userTables.length > 0) {
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throw new Error(`session-search database at "${actual}" is not an empty or recognized derived index`)
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}
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if (applicationId === SESSION_QUERY_SQLITE_APPLICATION_ID && version !== SESSION_QUERY_SQLITE_SCHEMA_VERSION) {
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resetDerivedSchema(db, actual, userTables)
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if (applicationId === SESSION_QUERY_SQLITE_APPLICATION_ID) {
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assertDerivedUserTables(actual, userTables)
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if (version !== SESSION_QUERY_SQLITE_SCHEMA_VERSION) resetDerivedSchema(db, userTables)
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}
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// Apply mutating pragmas only after refusing foreign or canonical files.
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// journalMode is a validated closed union, not caller-controlled SQL.
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@@ -82,13 +83,16 @@ function listUserTables(db: DatabaseSync): string[] {
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return rows.map(row => row.name)
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}
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function resetDerivedSchema(db: DatabaseSync, path: string, userTables: readonly string[]): void {
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function assertDerivedUserTables(path: string, userTables: readonly string[]): void {
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const unknownTables = userTables.filter(name => !DERIVED_USER_TABLES.has(name))
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if (unknownTables.length > 0) {
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throw new Error(
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`session-search database at "${path}" has unrecognized user tables: ${unknownTables.join(', ')}`,
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)
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}
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}
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function resetDerivedSchema(db: DatabaseSync, userTables: readonly string[]): void {
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for (const name of userTables) {
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db.exec(`DROP TABLE IF EXISTS ${quoteIdentifier(name)}`)
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}
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@@ -67,7 +67,9 @@ class TestPersistence extends SessionPersistence {
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static revisions = new Map<SessionIdType, number>()
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static nextRevision = 0
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static loads = new Map<SessionIdType, number>()
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static inspections = new Map<SessionIdType, number>()
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static loadEffect: ((entry: { meta: SessionHeader; events: SessionEvent[] }) => void) | undefined
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static inspectEffect: ((entry: { meta: SessionHeader; events: SessionEvent[] }) => void | Promise<void>) | undefined
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static listGate: Promise<void> | undefined
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static listStarted: (() => void) | undefined
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static snapshotEffect: (() => void | Promise<void>) | undefined
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@@ -82,7 +84,9 @@ class TestPersistence extends SessionPersistence {
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this.entries = new Map()
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this.revisions = new Map()
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this.loads = new Map()
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this.inspections = new Map()
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this.loadEffect = undefined
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this.inspectEffect = undefined
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for (const entry of entries) this.set(entry)
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this.listGate = undefined
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this.listStarted = undefined
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@@ -123,6 +127,16 @@ class TestPersistence extends SessionPersistence {
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return structuredClone(entry)
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}
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async inspect(id: SessionIdType): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
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TestPersistence.inspections.set(id, (TestPersistence.inspections.get(id) ?? 0) + 1)
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if (TestPersistence.failure !== undefined) throw TestPersistence.failure
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const entry = TestPersistence.entries.get(id)
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if (entry === undefined) throw new Error('missing test session')
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await TestPersistence.inspectEffect?.(entry)
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TestPersistence.inspectEffect = undefined
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return structuredClone(entry)
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}
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async list(): Promise<SessionHeader[]> {
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TestPersistence.listStarted?.()
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await TestPersistence.listGate
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@@ -602,11 +616,13 @@ describe('SQLite reconciliation and source lifecycle', () => {
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items: [{ header: shared, live: true, persisted: true }],
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})
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expect(TestPersistence.loads.get(shared.id)).toBeUndefined()
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expect(TestPersistence.inspections.get(shared.id)).toBeUndefined()
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detach()
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await expect(ctx.sessionQuery.searchSessions({ query: 'persisted' }))
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.resolves.toMatchObject({ items: [{ header: shared, live: false, persisted: true }] })
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expect(TestPersistence.loads.get(shared.id)).toBe(1)
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expect(TestPersistence.loads.get(shared.id)).toBeUndefined()
|
||||
expect(TestPersistence.inspections.get(shared.id)).toBe(1)
|
||||
await persistence.dispose()
|
||||
})
|
||||
|
||||
@@ -623,6 +639,28 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
.resolves.toMatchObject({ items: [{ header: { id: SessionId('attached') } }] })
|
||||
})
|
||||
|
||||
it('cannot crash-repair a log when live ownership begins during persisted inspection', async () => {
|
||||
const shared = header('attach-during-inspect', 10)
|
||||
const persistedEvents = messageEvents('persisted needle')
|
||||
TestPersistence.reset([{ meta: shared, events: persistedEvents }])
|
||||
const ctx = await liveContext()
|
||||
await ctx.plugin(TestPersistence)
|
||||
TestPersistence.loadEffect = (entry) => {
|
||||
entry.events = messageEvents('incorrect repair')
|
||||
}
|
||||
TestPersistence.inspectEffect = () => {
|
||||
ctx.sessions.create(shared.id, {
|
||||
seed: messageEvents('live needle'),
|
||||
meta: { createdAt: shared.createdAt },
|
||||
})
|
||||
}
|
||||
|
||||
await expect(ctx.sessionQuery.searchSessions({ query: 'live' }))
|
||||
.resolves.toMatchObject({ items: [{ header: shared, live: true, persisted: true }] })
|
||||
expect(TestPersistence.loads.get(shared.id)).toBeUndefined()
|
||||
expect(TestPersistence.entries.get(shared.id)?.events).toEqual(persistedEvents)
|
||||
})
|
||||
|
||||
it('retries when one live owner replaces another during persistence observation', async () => {
|
||||
TestPersistence.reset()
|
||||
const ctx = await liveContext()
|
||||
@@ -733,10 +771,10 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
TestPersistence.revisions.set(durable.id, revision)
|
||||
const replacement = await ctx.plugin(TestPersistence)
|
||||
const page = await ctx.sessionQuery.searchSessions({ query: 'new needle' })
|
||||
expect(TestPersistence.loads.get(durable.id)).toBe(2)
|
||||
expect(TestPersistence.inspections.get(durable.id)).toBe(2)
|
||||
expect(page).toMatchObject({ items: [{ header: durable }] })
|
||||
await expect(ctx.sessionQuery.searchSessions({ query: 'old' })).resolves.toEqual({ items: [] })
|
||||
expect(TestPersistence.loads.get(durable.id)).toBe(2)
|
||||
expect(TestPersistence.inspections.get(durable.id)).toBe(2)
|
||||
await replacement.dispose()
|
||||
})
|
||||
|
||||
@@ -768,8 +806,8 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
|
||||
const page = await ctx.sessionQuery.searchSessions({ query: 'needle' })
|
||||
expect(page.items.map(item => item.header.id).sort()).toEqual([added.id, first.id].sort())
|
||||
expect(TestPersistence.loads.get(first.id)).toBe(2)
|
||||
expect(TestPersistence.loads.get(added.id)).toBe(1)
|
||||
expect(TestPersistence.inspections.get(first.id)).toBe(2)
|
||||
expect(TestPersistence.inspections.get(added.id)).toBe(1)
|
||||
})
|
||||
|
||||
it('fails after one retry when persistence snapshots keep changing', async () => {
|
||||
@@ -811,7 +849,7 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
|
||||
await expect(ctx.sessionQuery.searchSessions({ query: 'needle' }))
|
||||
.resolves.toMatchObject({ items: [{ header: durable }] })
|
||||
expect(TestPersistence.loads.get(durable.id)).toBe(2)
|
||||
expect(TestPersistence.inspections.get(durable.id)).toBe(2)
|
||||
list.mockRestore()
|
||||
})
|
||||
|
||||
@@ -869,9 +907,9 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
const firstPersistence = await first.plugin(TestPersistence)
|
||||
const firstSearch = await first.plugin(SessionQuerySqlite, { path })
|
||||
await first.sessionQuery.searchSessions({ query: 'needle' })
|
||||
expect(Object.fromEntries(TestPersistence.loads)).toEqual({ unchanged: 1, changed: 1, deleted: 1 })
|
||||
expect(Object.fromEntries(TestPersistence.inspections)).toEqual({ unchanged: 1, changed: 1, deleted: 1 })
|
||||
await first.sessionQuery.searchSessions({ query: 'needle' })
|
||||
expect(Object.fromEntries(TestPersistence.loads)).toEqual({ unchanged: 1, changed: 1, deleted: 1 })
|
||||
expect(Object.fromEntries(TestPersistence.inspections)).toEqual({ unchanged: 1, changed: 1, deleted: 1 })
|
||||
await firstSearch.dispose()
|
||||
await firstPersistence.dispose()
|
||||
|
||||
@@ -890,7 +928,7 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
const secondSearch = await second.plugin(SessionQuerySqlite, { path })
|
||||
const result = await second.sessionQuery.searchSessions({ query: 'needle' })
|
||||
expect(result.items.map(item => item.header.id).sort()).toEqual([added.id, changed.id, unchanged.id].sort())
|
||||
expect(Object.fromEntries(TestPersistence.loads)).toEqual({
|
||||
expect(Object.fromEntries(TestPersistence.inspections)).toEqual({
|
||||
unchanged: 1,
|
||||
changed: 2,
|
||||
deleted: 1,
|
||||
@@ -929,25 +967,30 @@ describe('SQLite reconciliation and source lifecycle', () => {
|
||||
await expect(second.sessionQuery.searchSessions({ query: 'live' })).resolves.toEqual({ items: [] })
|
||||
await expect(second.sessionQuery.searchSessions({ query: 'persisted' }))
|
||||
.resolves.toMatchObject({ items: [{ header: shared, live: false, persisted: true }] })
|
||||
expect(TestPersistence.loads.get(shared.id)).toBe(1)
|
||||
expect(TestPersistence.inspections.get(shared.id)).toBe(1)
|
||||
await searchAgain.dispose()
|
||||
await persistenceAgain.dispose()
|
||||
})
|
||||
|
||||
it('refreshes the stored revision after a mutating load repair', async () => {
|
||||
it('refreshes after an external mutating load repair without loading from the query path', async () => {
|
||||
const durable = header('repair')
|
||||
TestPersistence.reset([{ meta: durable, events: messageEvents('before repair') }])
|
||||
const ctx = await liveContext()
|
||||
const persistence = await ctx.plugin(TestPersistence)
|
||||
await expect(ctx.sessionQuery.searchSessions({ query: 'before' }))
|
||||
.resolves.toMatchObject({ items: [{ header: durable }] })
|
||||
TestPersistence.loadEffect = (entry) => {
|
||||
entry.events = messageEvents('repaired needle')
|
||||
}
|
||||
const ctx = await liveContext()
|
||||
await ctx.plugin(TestPersistence)
|
||||
await ctx.sessionPersistence.load(durable.id)
|
||||
|
||||
await expect(ctx.sessionQuery.searchSessions({ query: 'repaired' }))
|
||||
.resolves.toMatchObject({ items: [{ header: durable }] })
|
||||
expect(TestPersistence.loads.get(durable.id)).toBe(2)
|
||||
expect(TestPersistence.inspections.get(durable.id)).toBe(2)
|
||||
await ctx.sessionQuery.searchSessions({ query: 'repaired' })
|
||||
expect(TestPersistence.loads.get(durable.id)).toBe(2)
|
||||
expect(TestPersistence.inspections.get(durable.id)).toBe(2)
|
||||
expect(TestPersistence.loads.get(durable.id)).toBe(1)
|
||||
await persistence.dispose()
|
||||
})
|
||||
|
||||
it('recovers on the next search after source and SQLite transaction failures', async () => {
|
||||
@@ -1066,6 +1109,27 @@ describe('SQLite schema, cancellation, and real persistence integration', () =>
|
||||
expect(stillAugmented.prepare('PRAGMA user_version').get()).toEqual({ user_version: 999 })
|
||||
stillAugmented.close()
|
||||
|
||||
const currentAugmentedPath = await temporaryPath('current-augmented.db')
|
||||
const currentAugmentedOwner = await liveContext({ path: currentAugmentedPath })
|
||||
await (currentAugmentedOwner.sessionQuery as SessionQuerySqlite).close()
|
||||
const currentAugmented = new DatabaseSync(currentAugmentedPath)
|
||||
currentAugmented.exec('CREATE TABLE unrelated(value TEXT)')
|
||||
currentAugmented.exec("INSERT INTO unrelated VALUES ('safe')")
|
||||
currentAugmented.close()
|
||||
const currentAugmentedCtx = new Context()
|
||||
await currentAugmentedCtx.plugin(SessionStore)
|
||||
await expect(currentAugmentedCtx.plugin(SessionQuerySqlite, {
|
||||
path: currentAugmentedPath,
|
||||
journalMode: 'delete',
|
||||
})).rejects.toThrow(expectCode('SESSION_QUERY_INDEX_FAILED'))
|
||||
expect(currentAugmentedCtx.sessionQuery).toBeUndefined()
|
||||
const stillCurrentAugmented = new DatabaseSync(currentAugmentedPath)
|
||||
expect(stillCurrentAugmented.prepare('SELECT value FROM unrelated').get()).toEqual({ value: 'safe' })
|
||||
expect(stillCurrentAugmented.prepare('PRAGMA user_version').get())
|
||||
.toEqual({ user_version: SESSION_QUERY_SQLITE_SCHEMA_VERSION })
|
||||
expect(stillCurrentAugmented.prepare('PRAGMA journal_mode').get()).toEqual({ journal_mode: 'wal' })
|
||||
stillCurrentAugmented.close()
|
||||
|
||||
const foreignPath = await temporaryPath('foreign.db')
|
||||
const foreign = new DatabaseSync(foreignPath)
|
||||
foreign.exec('PRAGMA journal_mode = WAL')
|
||||
@@ -1260,22 +1324,22 @@ describe('SQLite schema, cancellation, and real persistence integration', () =>
|
||||
const persistenceA = await first.plugin(SessionPersistenceSqlite, { path: persistencePathA })
|
||||
await first.sessionPersistence.create(shared)
|
||||
await first.sessionPersistence.append(shared.id, messageEvents('alpha source'))
|
||||
const loadA = vi.spyOn(first.sessionPersistence, 'load')
|
||||
const inspectA = vi.spyOn(first.sessionPersistence, 'inspect')
|
||||
const searchA = await first.plugin(SessionQuerySqlite, { path: searchPath })
|
||||
await expect(first.sessionQuery.searchSessions({ query: 'alpha' }))
|
||||
.resolves.toMatchObject({ items: [{ header: shared }] })
|
||||
expect(loadA).toHaveBeenCalledTimes(1)
|
||||
expect(inspectA).toHaveBeenCalledTimes(1)
|
||||
await searchA.dispose()
|
||||
await persistenceA.dispose()
|
||||
|
||||
const reopened = new Context()
|
||||
await reopened.plugin(SessionStore)
|
||||
const persistenceAAgain = await reopened.plugin(SessionPersistenceSqlite, { path: persistencePathA })
|
||||
const reopenedLoad = vi.spyOn(reopened.sessionPersistence, 'load')
|
||||
const reopenedInspect = vi.spyOn(reopened.sessionPersistence, 'inspect')
|
||||
const searchAAgain = await reopened.plugin(SessionQuerySqlite, { path: searchPath })
|
||||
await expect(reopened.sessionQuery.searchSessions({ query: 'alpha' }))
|
||||
.resolves.toMatchObject({ items: [{ header: shared }] })
|
||||
expect(reopenedLoad).not.toHaveBeenCalled()
|
||||
expect(reopenedInspect).not.toHaveBeenCalled()
|
||||
await searchAAgain.dispose()
|
||||
await persistenceAAgain.dispose()
|
||||
|
||||
@@ -1284,12 +1348,12 @@ describe('SQLite schema, cancellation, and real persistence integration', () =>
|
||||
const persistenceB = await second.plugin(SessionPersistenceSqlite, { path: persistencePathB })
|
||||
await second.sessionPersistence.create(shared)
|
||||
await second.sessionPersistence.append(shared.id, messageEvents('bravo source'))
|
||||
const loadB = vi.spyOn(second.sessionPersistence, 'load')
|
||||
const inspectB = vi.spyOn(second.sessionPersistence, 'inspect')
|
||||
const searchB = await second.plugin(SessionQuerySqlite, { path: searchPath })
|
||||
await expect(second.sessionQuery.searchSessions({ query: 'bravo' }))
|
||||
.resolves.toMatchObject({ items: [{ header: shared }] })
|
||||
await expect(second.sessionQuery.searchSessions({ query: 'alpha' })).resolves.toEqual({ items: [] })
|
||||
expect(loadB).toHaveBeenCalledTimes(1)
|
||||
expect(inspectB).toHaveBeenCalledTimes(1)
|
||||
await searchB.dispose()
|
||||
await persistenceB.dispose()
|
||||
})
|
||||
|
||||
@@ -72,16 +72,18 @@ export class SessionCorpus {
|
||||
if (persistence === undefined) throw notFound(sessionId)
|
||||
const listed = (await listPersisted(persistence)).find(header => header.id === sessionId)
|
||||
if (listed === undefined) throw notFound(sessionId)
|
||||
let loaded: Awaited<ReturnType<SessionPersistence['load']>>
|
||||
let loaded: Awaited<ReturnType<SessionPersistence['inspect']>>
|
||||
try {
|
||||
loaded = await persistence.load(sessionId)
|
||||
loaded = await persistence.inspect(sessionId)
|
||||
} catch (error: unknown) {
|
||||
throw new SessionQueryError(
|
||||
`failed to load session "${sessionId}": ${errorMessage(error)}`,
|
||||
`failed to inspect session "${sessionId}": ${errorMessage(error)}`,
|
||||
'SESSION_QUERY_PERSISTENCE_FAILED',
|
||||
{ cause: error },
|
||||
)
|
||||
}
|
||||
const attached = this._ctx.sessions.get(sessionId)
|
||||
if (attached !== undefined) return snapshotLive(attached)
|
||||
assertSessionHeadersCompatible(loaded.meta, listed)
|
||||
return {
|
||||
header: structuredClone(loaded.meta),
|
||||
|
||||
@@ -27,13 +27,15 @@ function eventLog(text = 'hello'): SessionEvent[] {
|
||||
class TestPersistence extends SessionPersistence {
|
||||
static entries = new Map<SessionIdType, { meta: SessionHeader; events: SessionEvent[] }>()
|
||||
static listFailure: unknown
|
||||
static loadFailure: unknown
|
||||
static inspectFailure: unknown
|
||||
static inspectEffect: (() => void) | undefined
|
||||
static afterList: (() => void) | undefined
|
||||
|
||||
static reset(entries: readonly { meta: SessionHeader; events: SessionEvent[] }[] = []): void {
|
||||
this.entries = new Map(entries.map(entry => [entry.meta.id, structuredClone(entry)]))
|
||||
this.listFailure = undefined
|
||||
this.loadFailure = undefined
|
||||
this.inspectFailure = undefined
|
||||
this.inspectEffect = undefined
|
||||
this.afterList = undefined
|
||||
}
|
||||
|
||||
@@ -54,10 +56,17 @@ class TestPersistence extends SessionPersistence {
|
||||
}
|
||||
|
||||
load(id: SessionIdType): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
|
||||
if (TestPersistence.loadFailure !== undefined) return rejectUnknown(TestPersistence.loadFailure)
|
||||
return this.inspect(id)
|
||||
}
|
||||
|
||||
inspect(id: SessionIdType): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
|
||||
if (TestPersistence.inspectFailure !== undefined) return rejectUnknown(TestPersistence.inspectFailure)
|
||||
const entry = TestPersistence.entries.get(id)
|
||||
if (entry === undefined) return Promise.reject(new Error('missing test session'))
|
||||
return Promise.resolve(structuredClone(entry))
|
||||
const result = structuredClone(entry)
|
||||
TestPersistence.inspectEffect?.()
|
||||
TestPersistence.inspectEffect = undefined
|
||||
return Promise.resolve(result)
|
||||
}
|
||||
|
||||
list(): Promise<SessionHeader[]> {
|
||||
@@ -96,6 +105,22 @@ function rejectUnknown<T>(reason: unknown): Promise<T> {
|
||||
}
|
||||
|
||||
describe('session-query exact reads', () => {
|
||||
it('prefers a live owner that attaches while its persisted prefix is inspected', async () => {
|
||||
const shared = header('attach-during-inspect', 2)
|
||||
TestPersistence.reset([{ meta: shared, events: eventLog('persisted') }])
|
||||
const ctx = await liveContext()
|
||||
await ctx.plugin(TestPersistence)
|
||||
TestPersistence.inspectEffect = () => {
|
||||
ctx.sessions.create(shared.id, {
|
||||
seed: eventLog('live'),
|
||||
meta: { createdAt: shared.createdAt },
|
||||
})
|
||||
}
|
||||
|
||||
await expect(ctx.sessionQuery.filterEvents(shared.id, []))
|
||||
.resolves.toMatchObject([{ sessionId: shared.id, text: 'live' }])
|
||||
})
|
||||
|
||||
it('reads the latest title from one live-preferred or persisted log without widening listSessions', async () => {
|
||||
const persistedHeader = header('persisted-title', 2)
|
||||
const sharedHeader = header('shared-title', 3)
|
||||
@@ -363,7 +388,7 @@ describe('session-query exact reads', () => {
|
||||
)
|
||||
await ctx.plugin(TestPersistence)
|
||||
TestPersistence.listFailure = new Error('list unavailable')
|
||||
TestPersistence.loadFailure = new Error('load unavailable')
|
||||
TestPersistence.inspectFailure = new Error('inspect unavailable')
|
||||
|
||||
await expect(ctx.sessionQuery.listEvents(live.id)).resolves.toHaveLength(2)
|
||||
await expect(ctx.sessionQuery.readEvent({ sessionId: live.id, seq: 1 })).resolves.toMatchObject({ target: { seq: 1 } })
|
||||
@@ -381,10 +406,10 @@ describe('session-query exact reads', () => {
|
||||
await expect(ctx.sessionQuery.listEvents(SessionId('absent')))
|
||||
.rejects.toThrow(expectCode('SESSION_QUERY_SESSION_NOT_FOUND'))
|
||||
|
||||
TestPersistence.loadFailure = 'raw failure'
|
||||
TestPersistence.inspectFailure = 'raw failure'
|
||||
await expect(ctx.sessionQuery.listEvents(durable.id))
|
||||
.rejects.toThrow(expectCode('SESSION_QUERY_PERSISTENCE_FAILED'))
|
||||
TestPersistence.loadFailure = undefined
|
||||
TestPersistence.inspectFailure = undefined
|
||||
const durableEntry = TestPersistence.entries.get(durable.id)!
|
||||
durableEntry.meta = { ...durableEntry.meta, cwd: '/changed-after-list' }
|
||||
TestPersistence.afterList = () => {
|
||||
|
||||
@@ -31,17 +31,17 @@ function appendEvent(seq: number, sources?: number[]): SessionEvent {
|
||||
class TracePersistence extends SessionPersistence {
|
||||
static entries = new Map<SessionIdType, { meta: SessionHeader; events: SessionEvent[] }>()
|
||||
static listCalls = 0
|
||||
static loadCalls = 0
|
||||
static inspectCalls = 0
|
||||
static listFailure: Error | undefined
|
||||
static loadFailure: Error | undefined
|
||||
static inspectFailure: Error | undefined
|
||||
static afterList: (() => void) | undefined
|
||||
|
||||
static reset(entries: readonly { meta: SessionHeader; events: SessionEvent[] }[] = []): void {
|
||||
this.entries = new Map(entries.map(entry => [entry.meta.id, structuredClone(entry)]))
|
||||
this.listCalls = 0
|
||||
this.loadCalls = 0
|
||||
this.inspectCalls = 0
|
||||
this.listFailure = undefined
|
||||
this.loadFailure = undefined
|
||||
this.inspectFailure = undefined
|
||||
this.afterList = undefined
|
||||
}
|
||||
|
||||
@@ -62,8 +62,12 @@ class TracePersistence extends SessionPersistence {
|
||||
}
|
||||
|
||||
load(id: SessionIdType): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
|
||||
TracePersistence.loadCalls += 1
|
||||
if (TracePersistence.loadFailure !== undefined) return Promise.reject(TracePersistence.loadFailure)
|
||||
return this.inspect(id)
|
||||
}
|
||||
|
||||
inspect(id: SessionIdType): Promise<{ meta: SessionHeader; events: SessionEvent[] }> {
|
||||
TracePersistence.inspectCalls += 1
|
||||
if (TracePersistence.inspectFailure !== undefined) return Promise.reject(TracePersistence.inspectFailure)
|
||||
const entry = TracePersistence.entries.get(id)
|
||||
if (entry === undefined) return Promise.reject(new Error('missing test session'))
|
||||
return Promise.resolve(structuredClone(entry))
|
||||
@@ -209,7 +213,7 @@ describe('session lineage tracing', () => {
|
||||
complete: true,
|
||||
})
|
||||
expect(TracePersistence.listCalls).toBe(1)
|
||||
expect(TracePersistence.loadCalls).toBe(0)
|
||||
expect(TracePersistence.inspectCalls).toBe(0)
|
||||
|
||||
TracePersistence.listFailure = new Error('unavailable')
|
||||
await expect(ctx.sessionQuery.traceSession(durable.id))
|
||||
@@ -301,7 +305,7 @@ describe('session event tracing', () => {
|
||||
expect(repeated.derivedEventSeqs).toEqual([8])
|
||||
})
|
||||
|
||||
it('loads persisted logs once, prefers live logs, and preserves failures and conflicts', async () => {
|
||||
it('inspects persisted logs once, prefers live logs, and preserves failures and conflicts', async () => {
|
||||
const durable = header('shared', 1, { cwd: '/same' })
|
||||
TracePersistence.reset([{ meta: durable, events: [appendEvent(0)] }])
|
||||
const ctx = await queryContext()
|
||||
@@ -309,7 +313,7 @@ describe('session event tracing', () => {
|
||||
|
||||
await expect(ctx.sessionQuery.traceEvent({ sessionId: durable.id, seq: 0 }))
|
||||
.resolves.toMatchObject({ target: { type: 'user/message', surface: 'current' } })
|
||||
expect([TracePersistence.listCalls, TracePersistence.loadCalls]).toEqual([1, 1])
|
||||
expect([TracePersistence.listCalls, TracePersistence.inspectCalls]).toEqual([1, 1])
|
||||
|
||||
const live = ctx.sessions.create(durable.id, { meta: { createdAt: 1, cwd: '/same' } })
|
||||
live.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
|
||||
@@ -319,10 +323,10 @@ describe('session event tracing', () => {
|
||||
{ surfaceOp: 'append' },
|
||||
)
|
||||
TracePersistence.listFailure = new Error('list unavailable')
|
||||
TracePersistence.loadFailure = new Error('load unavailable')
|
||||
TracePersistence.inspectFailure = new Error('inspect unavailable')
|
||||
await expect(ctx.sessionQuery.traceEvent({ sessionId: durable.id, seq: 1 }))
|
||||
.resolves.toMatchObject({ target: { type: 'context/message' } })
|
||||
expect([TracePersistence.listCalls, TracePersistence.loadCalls]).toEqual([1, 1])
|
||||
expect([TracePersistence.listCalls, TracePersistence.inspectCalls]).toEqual([1, 1])
|
||||
|
||||
TracePersistence.reset([{ meta: durable, events: [appendEvent(0)] }])
|
||||
const failedCtx = await queryContext()
|
||||
@@ -331,10 +335,10 @@ describe('session event tracing', () => {
|
||||
await expect(failedCtx.sessionQuery.traceEvent({ sessionId: durable.id, seq: 0 }))
|
||||
.rejects.toThrow(expectCode('SESSION_QUERY_PERSISTENCE_FAILED'))
|
||||
TracePersistence.listFailure = undefined
|
||||
TracePersistence.loadFailure = new Error('load unavailable')
|
||||
TracePersistence.inspectFailure = new Error('inspect unavailable')
|
||||
await expect(failedCtx.sessionQuery.traceEvent({ sessionId: durable.id, seq: 0 }))
|
||||
.rejects.toThrow(expectCode('SESSION_QUERY_PERSISTENCE_FAILED'))
|
||||
TracePersistence.loadFailure = undefined
|
||||
TracePersistence.inspectFailure = undefined
|
||||
TracePersistence.afterList = () => {
|
||||
mutableHeader(TracePersistence.entries.get(durable.id)!.meta).cwd = '/changed'
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user