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@@ -8,6 +8,7 @@
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import { Context } from 'cordis'
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import z from 'schemastery'
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+import { readdirSync } from 'node:fs'
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import { open, mkdir, readFile, readdir, link, rm, truncate } from 'node:fs/promises'
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import { dirname, join, resolve } from 'node:path'
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import { randomBytes } from 'node:crypto'
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@@ -25,7 +26,9 @@ export interface Config {
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/**
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* Root directory for all session files. Required (no default): a default of
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* `process.cwd()` would scatter session files as the process's cwd changes
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- * (bash calls, subprocesses). Sessions group under per-cwd subdirectories.
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+ * (bash calls, subprocesses). Sessions group under per-cwd subdirectories. An
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+ * existing root must be a readable directory; an absent root is created on
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+ * first materialization.
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*/
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root: string
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}
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@@ -64,6 +67,7 @@ export class SessionPersistenceJsonl extends SessionPersistence implements Persi
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super(ctx)
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// Resolve once so later process.cwd() changes cannot split one backend across roots.
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this.root = resolve(config.root)
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+ this.assertUsableRoot()
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this.coordinator = new PersistenceCoordinator<number>(this.ctx, this)
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}
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@@ -304,6 +308,16 @@ export class SessionPersistenceJsonl extends SessionPersistence implements Persi
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return matches[0]
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}
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+ /** Require an existing configured root to be a readable directory. */
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+ private assertUsableRoot(): void {
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+ try {
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+ readdirSync(this.root)
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+ } catch (error) {
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+ if (isENOENT(error)) return
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+ throw error
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+ }
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+ }
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+
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/** Reject metadata that does not identify the selected physical log. */
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private assertStoredIdentity(path: string, meta: SessionHeader, expectedId?: SessionId): void {
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if (expectedId !== undefined && meta.id !== expectedId) {
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Tianyi Cui