Allow week number to be used in the elasticsearch output index template

[hemasalma]

Hello,

We have installed telegraf and tried to send metrics data to elasticsearch ouput and that worked properly.

In config file in
[[outputs.elasticsearch]] block we have option for daily indexing data in elasticsearch
i.e., index=index-name-%Y-%m-%d

what we need is..
can we index data for a week of year basis..
i.e., instead of indexing data in a daily index basis it should be indexed in week of year basis..

[danielnelson]

I can imagine adding more formatting symbols, I know in python they use %U and %W for week depending on what day of the week is the start of the week. In Go, the .ISOWeek() function seems to be equivalent to %W

[lpic10]

In linux date it can be %U, %V or %W also depending on first day of the week, being %V the ISO week number. Since python 3.6 there is also %V for ISO week number. If you agree on using ISO week, I think it makes sense to use that as well.

[danielnelson]

That sounds perfect.