[Duplicity-talk] backend query_info question

[Ken Bass]

Hi,

I am writing a backend (for the idrive/ibackup online storage) and am 
confused about the query_info().

Is a backend supposed to (optionally) provide query_info, or 
_query_list_info or _query_file_info? It is rather confusing as to which 
is really supposed to be provided and I wasn't sure what the leading 
underscore was for.

Initially I was just thinking of providing my own query_info, which is 
consistent with implementing other calls such as get, put, delete,  but 
then when I looked at some other backend code, I noticed _boto, 
couldfiles, gio, local and u1 all go the _query_file_info route. No one 
appears to be simply implementing the query_info themselves.