Function getTeleportEvents

src/services/api/sessionIngress.ts:291–415

(
  sessionId: string,
  accessToken: string,
  orgUUID: string,
)

 * 50k is gone; we loop.
 */
export async function getTeleportEvents(
  sessionId: string,
  accessToken: string,
  orgUUID: string,
): Promise<Entry[] | null> {
  const baseUrl = `${getOauthConfig().BASE_API_URL}/v1/code/sessions/${sessionId}/teleport-events`
  const headers = {
    ...getOAuthHeaders(accessToken),
    'x-organization-uuid': orgUUID,
  }

  logForDebugging(`[teleport] Fetching events from: ${baseUrl}`)

  const all: Entry[] = []
  let cursor: string | undefined
  let pages = 0

  // Infinite-loop guard: 1000/page × 100 pages = 100k events. Larger than
  // session-ingress's 50k one-shot. If we hit this, something's wrong
  // (server not advancing cursor) — bail rather than hang.
  const maxPages = 100

  while (pages < maxPages) {
    const params: Record<string, string | number> = { limit: 1000 }
    if (cursor !== undefined) {
      params.cursor = cursor
    }

    let response
    try {
      response = await axios.get<TeleportEventsResponse>(baseUrl, {
        headers,
        params,
        timeout: 20000,
        validateStatus: status => status < 500,
      })
    } catch (e) {
      const err = e as AxiosError
      logError(new Error(`Teleport events fetch failed: ${err.message}`))
      logForDiagnosticsNoPII('error', 'teleport_events_fetch_fail')
      return null
    }

    if (response.status === 404) {
      // 404 on page 0 is ambiguous during the migration window:
      //   (a) Session genuinely not found (not in Spanner AND not in
      //       threadstore) — nothing to fetch.
      //   (b) Route-level 404: endpoint not deployed yet, or session is
      //       a threadstore session not yet backfilled into Spanner.
      // We can't tell them apart from the response alone. Returning null
      // lets the caller fall back to session-ingress, which will correctly
      // return empty for case (a) and data for case (b). Once the backfill
      // is complete and session-ingress is gone, the fallback also returns
      // null → same "Failed to fetch session logs" error as today.
      //
      // 404 mid-pagination (pages > 0) means session was deleted between
      // pages — return what we have.
      logForDebugging(