Filesystem Metrics sampling

;; Leiningen project
[com.brunobonacci/mulog-filesystem-metrics "x.x.x"]

;; deps.edn format
{:deps { com.brunobonacci/mulog-filesystem-metrics {:mvn/version "x.x.x"}}}

Current version:

It is possible to sample filesystem metrics such as total and available disk space for each mounted filesystem using a special publisher.

(def publisher
  (u/start-publisher!
    {:type :filesystem-metrics
     ;; the interval in millis between two samples (default: 60s)
     :sampling-interval 60000
     ;; transform metrics (e.g. filter only volumes over 1 GB)
     ;; (default: `nil` leaves metrics unchanged)
     :transform
     (partial filter #(> (:total-bytes %) 1e9)}))

Here an example of the metrics sampled for one filesystem

{:mulog/event-name :mulog/filesystem-metrics-sampled,
 :mulog/timestamp 1601629811722,
 :mulog/trace-id #mulog/flake "4YcWozKEUcfE9JxfQMnuwb-NnO8ygEpE",
 :filesystem-metrics
 {:name "/dev/disk1s1"
  :type "apfs"
  :path "/"
  :readonly? false
  :total-bytes 499963170816
  :unallocated-bytes 40646381568
  :usable-bytes 30255194112}}

NOTE: values will change depending on available disks.