Hello,
(excuse my english please)
I'd like to ask for help with my problem:
I need to work with the shared tables (master-subagents). So I would like to
register table on the master agent and subagents register rows on master agent.
When "an event" is happening on the subagent, I want to insert a row into the
table.
(I'm doing something similar as logging notifications in notification-log-mib.
But I need more and it is not sufficient to insert row on the master agent
when the trap is received via AgentX on master agent.)
I have generated table with mib2c.create-dataset.conf,v 5.4.:
static netsnmp_table_data_set *fooAlarmModuleTable;
static oid fooAlarmModuleTable_oid[] = {1,3,6,1,4,1,1234,2,1,3,1,2,1};
static size_t fooAlarmModuleTable_oid_len = OID_LENGTH(fooAlarmModuleTable_oid);
static oid fooAlarmModuleRow_oid[] = {1,3,6,1,4,1,1234,2,1,3,1,2,1,1,0,0,0};
static size_t fooAlarmModuleRow_oid_len = OID_LENGTH(fooAlarmModuleRow_oid);
void
initialize_table_fooAlarmModuleTable(void)
{
/* create the table structure itself */
fooAlarmModuleTable = netsnmp_create_table_data_set("fooAlarmModuleTable");
/* comment this out or delete if you don't support creation of new rows */
fooAlarmModuleTable->allow_creation = 1;
/***************************************************
* Adding indexes
*/
DEBUGMSGTL(("initialize_table_fooAlarmModuleTable",
"adding indexes to table fooAlarmModuleTable\n"));
netsnmp_table_set_add_indexes(fooAlarmModuleTable,
ASN_INTEGER, /* index: cfbModuleIndex */
ASN_INTEGER, /* index: fooAlarmModuleIndex */
ASN_INTEGER, /* index: fooAlarmModuleErrorCause */
0);
DEBUGMSGTL(("initialize_table_fooAlarmModuleTable",
"adding column types to table fooAlarmModuleTable\n"));
netsnmp_table_set_multi_add_default_row(fooAlarmModuleTable,
COLUMN_FOOALARMMODULEINDEX,
ASN_INTEGER, 0,
NULL, 0,
COLUMN_FOOALARMMODULEERRORCAUSE,
ASN_INTEGER, 0,
NULL, 0,
COLUMN_FOOALARMMODULEFUNCTIONALGROUP, ASN_INTEGER, 0,
NULL, 0,
COLUMN_FOOALARMMODULEALARMSEVERITY, ASN_INTEGER, 0,
NULL, 0,
COLUMN_FOOALARMMODULEALARMCLASS,
ASN_INTEGER, 0,
NULL, 0,
COLUMN_FOOALARMMODULEALARMTIME,
ASN_OCTET_STR, 0,
NULL, 0,
0);
/* registering the table with the master agent */
/* note: if you don't need a subhandler to deal with any aspects
of the request, change fooAlarmModuleTable_handler to "NULL" */
netsnmp_register_table_data_set(netsnmp_create_handler_registration("fooAlarmModuleTable",
fooAlarmModuleTable_handler,
fooAlarmModuleTable_oid,
fooAlarmModuleTable_oid_len,
HANDLER_CAN_RWRITE),
fooAlarmModuleTable, NULL);
}
There is the empty handler:
int
fooAlarmModuleTable_handler(
netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests) {
/* perform anything here that you need to do. The requests have
already been processed by the master table_dataset handler, but
this gives you chance to act on the request in some other way
if need be. */
return SNMP_ERR_NOERROR;
}
Then I have created a function for adding a row with registering an oid index.
void fooAlarmModuleTable_insert_row(long moduleIndex,
unsigned long fooAlarmModuleIndex,
unsigned long fooAlarmModuleErrorCause,
unsigned long fooAlarmModuleFunctionalGroup,
unsigned long fooAlarmModuleAlarmSeverity,
unsigned long fooAlarmModuleAlarmClass,
char * fooAlarmModuleAlarmTime )
{
netsnmp_table_row *tmprow=NULL, *oldRow = NULL;
if (!fooAlarmModuleTable)
return;
fooAlarmModuleRow_oid[fooAlarmModuleRow_oid_len-3] = moduleIndex;
fooAlarmModuleRow_oid[fooAlarmModuleRow_oid_len-2] = fooAlarmModuleIndex;
fooAlarmModuleRow_oid[fooAlarmModuleRow_oid_len-1] =
fooAlarmModuleErrorCause;
register_oid_index(fooAlarmModuleRow_oid, fooAlarmModuleRow_oid_len,
fooAlarmModuleRow_oid + fooAlarmModuleTable_oid_len + 1, 3);
tmprow = netsnmp_create_table_data_row();
netsnmp_table_row_add_index(tmprow, ASN_INTEGER, (char*) &moduleIndex,
sizeof(moduleIndex));
netsnmp_table_row_add_index(tmprow, ASN_INTEGER, (char*)
&fooAlarmModuleIndex, sizeof(fooAlarmModuleIndex));
netsnmp_table_row_add_index(tmprow, ASN_INTEGER, (char*)
&fooAlarmModuleErrorCause, sizeof(fooAlarmModuleErrorCause));
netsnmp_set_row_column (tmprow, COLUMN_FOOALARMMODULEINDEX, ASN_INTEGER,
(char*) &fooAlarmModuleIndex, sizeof(unsigned long));
netsnmp_mark_row_column_writable(tmprow, COLUMN_FOOALARMMODULEINDEX, 1);
netsnmp_set_row_column (tmprow, COLUMN_FOOALARMMODULEERRORCAUSE,
ASN_INTEGER, (char*) &fooAlarmModuleErrorCause, sizeof(unsigned long));
netsnmp_mark_row_column_writable(tmprow, COLUMN_FOOALARMMODULEERRORCAUSE, 1);
netsnmp_set_row_column (tmprow, COLUMN_FOOALARMMODULEFUNCTIONALGROUP,
ASN_INTEGER, (char*) &fooAlarmModuleFunctionalGroup, sizeof(unsigned long));
netsnmp_mark_row_column_writable(tmprow,
COLUMN_FOOALARMMODULEFUNCTIONALGROUP, 1);
netsnmp_set_row_column (tmprow, COLUMN_FOOALARMMODULEALARMSEVERITY,
ASN_INTEGER, (char*) &fooAlarmModuleAlarmSeverity, sizeof(unsigned long));
netsnmp_mark_row_column_writable(tmprow,
COLUMN_FOOALARMMODULEALARMSEVERITY, 1);
netsnmp_set_row_column (tmprow, COLUMN_FOOALARMMODULEALARMCLASS,
ASN_INTEGER, (char*) &fooAlarmModuleAlarmClass, sizeof(unsigned long));
netsnmp_mark_row_column_writable(tmprow, COLUMN_FOOALARMMODULEALARMCLASS, 1);
netsnmp_set_row_column (tmprow, COLUMN_FOOALARMMODULEALARMTIME,
ASN_OCTET_STR, (char*) fooAlarmModuleAlarmTime, strlen(fooAlarmModuleAlarmTime)
);
netsnmp_mark_row_column_writable(tmprow, COLUMN_FOOALARMMODULEALARMTIME, 1);
/* update row if exist */
oldRow = netsnmp_table_data_get(fooAlarmModuleTable->table, tmprow->indexes);
if (oldRow)
{
netsnmp_table_data_remove_and_delete_row(fooAlarmModuleTable->table,
oldRow);
}
netsnmp_table_dataset_add_row(fooAlarmModuleTable, tmprow);
};
I don't check if it is master agent when I add oid_index yet. I just skip this
line when I am tracing master agent.
So what do I see?
- AgentX communication works fine
- master agent adds the row correctly, when "event" happend on the master agent
- subagent seems to register an index correctly on master agent through AgentX
- subagent adds row localy (on subagent)
When GET request for the subagent row is received:
- I guess that master agent should check all registered indexes and forward
request to an appropriate subagent, but this doesn't happen. Master agent
returns "No Such Instance".
- I have seen some threads about netsnmp_register_mib_table_row() function.
But this function was moved to old_api long time ago. Should I still use this
one? And anyway it is not clear for me how it works. It seems to register a
handler?
I am really stucked here for couple days and I can not make a step :o(.
I would really appreciate your help guys. Any word or a line of code would
help me.
Thank you in advance!
Kind regards,
Peter.
-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
_______________________________________________
Net-snmp-users mailing list
[email protected]
Please see the following page to unsubscribe or change other options:
https://lists.sourceforge.net/lists/listinfo/net-snmp-users
