Function foundFresh

plugins/prefetch/plugin.cc:247–263

* @brief Find out if the object was found fresh in cache. * * This function finely controls if the pre-fetch should be scheduled or not. * @param txnp HTTP transaction structure * @return true - hit fresh, false - miss/stale/skipped or error */

 * @return true - hit fresh, false - miss/stale/skipped or error
 */
static bool
foundFresh(TSHttpTxn txnp)
{
  bool fresh = false;
  int  lookupStatus;
  if (TS_SUCCESS == TSHttpTxnCacheLookupStatusGet(txnp, &lookupStatus)) {
    PrefetchDebug("lookup status: %s", getCacheLookupResultName((TSCacheLookupResult)lookupStatus));
    if (TS_CACHE_LOOKUP_HIT_FRESH == lookupStatus) {
      fresh = true;
    }
  } else {
    /* Failed to get the lookup status,  likely a previous plugin already prepared the client response w/o a cache lookup,
     * we don't really know if the cache has a fresh object, so just don't trigger pre-fetch  */
    PrefetchDebug("failed to check cache-ability");
  }
  return fresh;
}

/**
 * @brief Check if the response from origin for N-th object is success (200 and 206)