/*
* initialization
*/
void
netsnmp_access_systemstats_init(void)
{
netsnmp_container * ifcontainer;
netsnmp_access_systemstats_arch_init();
/*
* load once to set up ifIndexes
*/
ifcontainer = netsnmp_access_systemstats_container_load(NULL, 0);
if(NULL != ifcontainer)
netsnmp_access_systemstats_container_free(ifcontainer, 0);
}
/**
* load initial data
*
* TODO:350:M: Implement ipIfStatsTable data load
* This function will also be called by the cache helper to load
* the container again (after the container free function has been
* called to free the previous contents).
*
* @param container container to which items should be inserted
*
* @retval MFD_SUCCESS : success.
* @retval MFD_RESOURCE_UNAVAILABLE : Can't access data source
* @retval MFD_ERROR : other error.
*
* This function is called to load the index(es) (and data, optionally)
* for the every row in the data set.
*
* @remark
* While loading the data, the only important thing is the indexes.
* If access to your data is cheap/fast (e.g. you have a pointer to a
* structure in memory), it would make sense to update the data here.
* If, however, the accessing the data invovles more work (e.g. parsing
* some other existing data, or peforming calculations to derive the data),
* then you can limit yourself to setting the indexes and saving any
* information you will need later. Then use the saved information in
* ipIfStatsTable_row_prep() for populating data.
*
* @note
* If you need consistency between rows (like you want statistics
* for each row to be from the same time frame), you should set all
* data here.
*
*/
int
ipIfStatsTable_container_load(netsnmp_container * container)
{
netsnmp_container *stats;
DEBUGMSGTL(("verbose:ipIfStatsTable:ipIfStatsTable_container_load",
"called\n"));
netsnmp_assert(NULL != container);
stats = netsnmp_access_systemstats_container_load(NULL, NETSNMP_ACCESS_SYSTEMSTATS_LOAD_IFTABLE);
if (NULL == stats)
return MFD_RESOURCE_UNAVAILABLE; /* msg already logged */
/*
* TODO:351:M: |-> Load/update data in the ipIfStatsTable container.
* loop over your ipIfStatsTable data, allocate a rowreq context,
* set the index(es) [and data, optionally] and insert into
* the container.
*/
/*
* we just got a fresh copy of data. compare it to
* what we've already got, and make any adjustements...
*/
CONTAINER_FOR_EACH(container, (netsnmp_container_obj_func *)
_check_for_updates, stats);
/*
* now add any new entries
*/
CONTAINER_FOR_EACH(stats, (netsnmp_container_obj_func *)
_add_new, container);
/*
* free the container. we've either claimed each ifentry, or released it,
* so the dal function doesn't need to clear the container.
*/
netsnmp_access_systemstats_container_free(stats,
NETSNMP_ACCESS_SYSTEMSTATS_FREE_DONT_CLEAR);
DEBUGMSGT(("verbose:ipIfStatsTable:ipIfStatsTable_container_load",
"%lu records\n", (unsigned long)CONTAINER_SIZE(container)));
return MFD_SUCCESS;
} /* ipIfStatsTable_container_load */