// Gather retrieves all the configured fields and tables.
// Any error encountered does not halt the process. The errors are accumulated
// and returned at the end.
func (s *Snmp) Gather(acc telegraf.Accumulator) error {
if err := s.init(); err != nil {
return err
}
for _, agent := range s.Agents {
gs, err := s.getConnection(agent)
if err != nil {
acc.AddError(Errorf(err, "agent %s", agent))
continue
}
// First is the top-level fields. We treat the fields as table prefixes with an empty index.
t := Table{
Name: s.Name,
Fields: s.Fields,
}
topTags := map[string]string{}
if err := s.gatherTable(acc, gs, t, topTags, false); err != nil {
acc.AddError(Errorf(err, "agent %s", agent))
}
// Now is the real tables.
for _, t := range s.Tables {
if err := s.gatherTable(acc, gs, t, topTags, true); err != nil {
acc.AddError(Errorf(err, "agent %s", agent))
}
}
}
return nil
}