Question #223956 on Graphite changed: https://answers.launchpad.net/graphite/+question/223956
Peter C. Norton posted a new comment: I haven't had a chance to read this whole thread yet, but I have implemented a non-whisper/non-ceres/non-rrd backend so thought I'd chime in. As a hackday project, I have added support to graphite-web to query metrics from kairosdb. I could help with abstracting for pluggable backends as well. I guess a good place to start is what the requirements are. The main changes are here: https://github.com/pcn/graphite- web/tree/add_kairosdb_support This relies on a kairosdb glue library where I put most of the details of getting data in a format appropriate for graphite, but the summary is: 1) In master, there is an idea of "time intervals" which allow data to be queried from >1 physical location in a single backend. E.g. host1 has data from yesterday and host2 has data from today. Their data can be joined and presented. Since kairosdb stores the data in a backend where this doesn't really make sense, I haven't gotten into the details of this, but this is my understanding and it should be documented. 2) Graphite requires that data be in even steps. Kairosdb offers good grouping and aggregation functions, so it was pretty easy to turn data that could be spaced unevenly to be grouped into appropriate time intervals. This is in the glue library, and isn't in the graphite-web code. 3) graphite-web implements search functionality using a better-than- globbing/better-than-fnmatch feature, you just have to give it a list of metrics that the backend knows about. I didn't know that so I implemented something inferior that I should go and fix soon. If you look at the commits in my branch the work required to abstract these things should be pretty apparent, along with some other details that don't really stand out in my memory (this was a month ago, and I need to fix some of this up soon). I'd be happy to talk about making an API for this if I can help. -Peter -- You received this question notification because you are a member of graphite-dev, which is an answer contact for Graphite. _______________________________________________ Mailing list: https://launchpad.net/~graphite-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~graphite-dev More help : https://help.launchpad.net/ListHelp
