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snmp generic
SNMP Reference Manual
NewVal = term()
Sets a new value to a variable. The variable is created if it does not exist. No checks are
made on the type of the new value. Returns false if the NameDb argument is incorrectly
specified, otherwise true.
Example
The following example shows an implementation of a table which is stored in Mnesia,
but with some checks performed at set-request operations.
myTable func(new, NameDb) ->
% pass unchanged
snmp generic:table func(new, NameDb).
% pass unchanged
myTable func(delete, NameDb) ->
snmp generic:table func(delete, NameDb).
%% change row
myTable func(is set ok, RowIndex, Cols, NameDb) ->
case snmp generic:table func(is set ok, RowIndex,
Cols, NameDb) of
fnoError, 0g ->
myApplication:is set ok(RowIndex, Cols);
Err ->
Err
end;
myTable func(set, RowIndex, Cols, NameDb) ->
case snmp generic:table func(set, RowIndex, Cols,
NameDb),
fnoError, 0g ->
% Now the row is updated, tell the application
myApplication:update(RowIndex, Cols);
Err ->
Err
end;
myTable func(Op, RowIndex, Cols, NameDb) ->
% pass unchanged
snmp generic:table func(Op, RowIndex, Cols, NameDb).
The .funcs file would look like:
fmyTable, fmyModule, myTable func, [fmyTable, mnesiag]gg.
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Simple Network Management Protocol (SNMP)