Function TSHttpTxnCacheLookupStatusSet

src/api/InkAPI.cc:4202–4237

two hooks this function may gets called: TS_HTTP_READ_CACHE_HDR_HOOK & TS_HTTP_CACHE_LOOKUP_COMPLETE_HOOK */

   TS_HTTP_CACHE_LOOKUP_COMPLETE_HOOK
 */
TSReturnCode
TSHttpTxnCacheLookupStatusSet(TSHttpTxn txnp, int cachelookup)
{
  sdk_assert(sdk_sanity_check_txn(txnp) == TS_SUCCESS);

  HttpSM                            *sm        = reinterpret_cast<HttpSM *>(txnp);
  HttpTransact::CacheLookupResult_t *sm_status = &(sm->t_state.cache_lookup_result);

  // converting from a miss to a hit is not allowed
  if (*sm_status == HttpTransact::CACHE_LOOKUP_MISS && cachelookup != TS_CACHE_LOOKUP_MISS) {
    return TS_ERROR;
  }

  // here is to handle converting a hit to a miss
  if (cachelookup == TS_CACHE_LOOKUP_MISS && *sm_status != HttpTransact::CACHE_LOOKUP_MISS) {
    sm->t_state.api_cleanup_cache_read = true;
    ink_assert(sm->t_state.transact_return_point != nullptr);
    sm->t_state.transact_return_point = HttpTransact::HandleCacheOpenRead;
  }

  switch (cachelookup) {
  case TS_CACHE_LOOKUP_MISS:
    *sm_status = HttpTransact::CACHE_LOOKUP_MISS;
    break;
  case TS_CACHE_LOOKUP_HIT_STALE:
    *sm_status = HttpTransact::CACHE_LOOKUP_HIT_STALE;
    break;
  case TS_CACHE_LOOKUP_HIT_FRESH:
    *sm_status = HttpTransact::CACHE_LOOKUP_HIT_FRESH;
    break;
  default:
    return TS_ERROR;
  }

  return TS_SUCCESS;
}

TSReturnCode
TSHttpTxnInfoIntGet(TSHttpTxn txnp, TSHttpTxnInfoKey key, TSMgmtInt *value)