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fix(session): resolve packed default without schema

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This commit is contained in:
Tianyi Cui
2026-07-27 03:54:03 +08:00
parent d525bbabbb
commit 4a336ba8d7
3 changed files with 31 additions and 6 deletions
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2
docs/config-catalog.md
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@@ -1003,7 +1003,7 @@ export interface Config {
export type JsonlCompression = 'zstd' | 'none'
```
Source: [`packages/session-persistence/session-persistence-jsonl/src/index.ts:39`](../packages/session-persistence/session-persistence-jsonl/src/index.ts)
Source: [`packages/session-persistence/session-persistence-jsonl/src/index.ts:40`](../packages/session-persistence/session-persistence-jsonl/src/index.ts)
## `@deepseek-ai/dsh-session-persistence-sqlite`

8
packages/session-persistence/session-persistence-jsonl/src/index.ts
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@@ -27,6 +27,7 @@ import { ensureDurableDirectoryWin32, publishNewFileWin32 } from './win32.ts'
export type { JsonlCompression } from './format.ts'
const DEFAULT_PACK_CHUNKS = true
const DEFAULT_COMPRESSION: JsonlCompression = 'zstd'
/** Loader schema for the JSONL artifact's physical encoding. */
@@ -79,7 +80,7 @@ export class SessionPersistenceJsonl extends SessionPersistence implements Persi
static Config: z<Config> = z.object({
root: z.string().required(),
packChunks: z.boolean().default(true),
packChunks: z.boolean().default(DEFAULT_PACK_CHUNKS),
compression: JsonlCompressionSchema,
})
@@ -100,9 +101,8 @@ export class SessionPersistenceJsonl extends SessionPersistence implements Persi
super(ctx)
// Resolve once so later process.cwd() changes cannot split one backend across roots.
this.root = resolve(config.root)
// schemastery (static Config) applied the default before construction;
// the cast records that runtime fact for exactOptionalPropertyTypes.
this.packChunks = (config as Required<Config>).packChunks
// Programmatic wrappers may construct the backend without Schemastery normalization.
this.packChunks = config.packChunks ?? DEFAULT_PACK_CHUNKS
this.compression = config.compression ?? DEFAULT_COMPRESSION
this.assertUsableRoot()
this.coordinator = new PersistenceCoordinator<JsonlTornMarker>(this.ctx, this)

27
packages/session-persistence/session-persistence-jsonl/tests/zstd.spec.ts
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@@ -245,10 +245,35 @@ describe('SessionPersistenceJsonl: default Zstandard encoding', () => {
backend = new SessionPersistenceJsonl(inner, { root })
}, { inject: ['sessions'] }))
const header = meta('direct-default')
const path = logPath(root, header.cwd, header.id, 'zstd')
expect(backend.locate(header)).toEqual({
kind: 'jsonl',
path: logPath(root, header.cwd, header.id, 'zstd'),
path,
})
const base = oneTurnLog()
const events: SessionEvent[] = [
...base.slice(0, 3),
...Array.from({ length: 3 }, (_, index): SessionEvent => ({
type: 'assistant/chunk',
seq: 3 + index,
time: 4 + index,
data: { turn: 1, step: 1, chunk: { type: 'text-delta', index: 0, text: `part-${index}` } },
})),
...base.slice(3).map((event): SessionEvent => ({
...event,
seq: event.seq + 3,
time: event.time + 3,
})),
]
await backend.create(header)
await backend.append(header.id, events)
const plaintext = (await decodeCompleteFrames(await readFile(path))).toString()
const recordTypes = plaintext.trimEnd().split('\n')
.map(line => (JSON.parse(line) as { type: string }).type)
expect(recordTypes).toContain('text-chunks')
expect((await backend.load(header.id)).events).toEqual(events)
})
it('appends one frame per durable batch without rewriting prior bytes', async () => {