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fix(logs): add robust log endpoint fallback and html guard

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This commit is contained in:
Parth Bandwal 2026-02-23 18:26:34 +05:30
parent 2f01019e60
commit caa8983dfc
1 changed files with 65 additions and 4 deletions
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69
src/lib/api/logs.ts
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@ -3,6 +3,24 @@ export interface AuthApiRequestContext {
signal?: AbortSignal
}
export class LogsApiError extends Error {
status?: number
code?: 'not_supported' | 'request_failed'
constructor(
message: string,
options: {
status?: number
code?: 'not_supported' | 'request_failed'
} = {},
) {
super(message)
this.name = 'LogsApiError'
this.status = options.status
this.code = options.code
}
}
const buildAuthHeader = (token: string) => {
return { 'x-jm-authorization': `Bearer ${token}` }
}
@ -23,6 +41,9 @@ const withExpectedContentTypeOrThrow = (response: Response, expectedContentType:
return response
}
const LOG_ENDPOINT_PATHS = ['/api/v0/log', '/jam/api/v0/log'] as const
const LOG_FALLBACK_STATUSES = new Set([404, 405, 501])
/**
* Fetch features configuration from the server
* @param token - Authentication token
@ -50,8 +71,48 @@ export const fetchLog = async ({
}: AuthApiRequestContext & {
fileName: string
}) => {
return await fetch(`/jam/api/v0/log/${fileName}`, {
headers: { ...buildAuthHeader(token) },
signal,
}).then((response) => withExpectedContentTypeOrThrow(response, 'text/plain'))
const encodedFileName = encodeURIComponent(fileName)
let fallbackError: LogsApiError | undefined
for (const path of LOG_ENDPOINT_PATHS) {
const response = await fetch(`${path}/${encodedFileName}`, {
headers: { ...buildAuthHeader(token) },
signal,
})
if (response.ok) {
const contentType = response.headers.get('content-type')?.toLowerCase() || ''
const body = await response.text()
const bodyStart = body.trimStart().slice(0, 64).toLowerCase()
const isHtmlResponse =
contentType.includes('text/html') || bodyStart.startsWith('<!doctype html') || bodyStart.startsWith('<html')
if (isHtmlResponse) {
fallbackError = new LogsApiError('Unexpected HTML response while fetching logs.', {
status: response.status,
code: 'not_supported',
})
continue
}
return new Response(body, {
status: response.status,
statusText: response.statusText,
headers: response.headers,
})
}
const requestError = new LogsApiError(`Request failed with status ${response.status}`, {
status: response.status,
code: LOG_FALLBACK_STATUSES.has(response.status) ? 'not_supported' : 'request_failed',
})
if (LOG_FALLBACK_STATUSES.has(response.status)) {
fallbackError = requestError
continue
}
throw requestError
}
throw fallbackError ?? new LogsApiError('Failed to load log file.', { code: 'request_failed' })
}