File size: 2,362 Bytes
064bfd6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | import type { SecureStorage, SecureStorageData } from './types.js'
/**
* Creates a fallback storage that tries to use the primary storage first,
* and if that fails, falls back to the secondary storage
*/
export function createFallbackStorage(
primary: SecureStorage,
secondary: SecureStorage,
): SecureStorage {
return {
name: `${primary.name}-with-${secondary.name}-fallback`,
read(): SecureStorageData {
const result = primary.read()
if (result !== null && result !== undefined) {
return result
}
return secondary.read() || {}
},
async readAsync(): Promise<SecureStorageData | null> {
const result = await primary.readAsync()
if (result !== null && result !== undefined) {
return result
}
return (await secondary.readAsync()) || {}
},
update(data: SecureStorageData): { success: boolean; warning?: string } {
// Capture state before update
const primaryDataBefore = primary.read()
const result = primary.update(data)
if (result.success) {
// Delete secondary when migrating to primary for the first time
// This preserves credentials when sharing .claude between host and containers
// See: https://github.com/anthropics/claude-code/issues/1414
if (primaryDataBefore === null) {
secondary.delete()
}
return result
}
const fallbackResult = secondary.update(data)
if (fallbackResult.success) {
// Primary write failed but primary may still hold an *older* valid
// entry. read() prefers primary whenever it returns non-null, so that
// stale entry would shadow the fresh data we just wrote to secondary —
// e.g. a refresh token the server has already rotated away, causing a
// /login loop (#30337). Best-effort delete; if this also fails the
// user's keychain is in a bad state we can't fix from here.
if (primaryDataBefore !== null) {
primary.delete()
}
return {
success: true,
warning: fallbackResult.warning,
}
}
return { success: false }
},
delete(): boolean {
const primarySuccess = primary.delete()
const secondarySuccess = secondary.delete()
return primarySuccess || secondarySuccess
},
}
}
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