add new collector for fairshare data

Author: vpenso

DEVELOPMENT.md

@@ -30,7 +30,7 @@ go mod download
 Build the exporter:
 
 ```bash
-go build -o bin/prometheus-slurm-exporter {main,accounts,cpus,gpus,partitions,nodes,queue,scheduler,users}.go
+go build -o bin/prometheus-slurm-exporter {main,accounts,cpus,gpus,partitions,nodes,queue,scheduler,sshare,users}.go
 ```
 
 Run all tests included in `_test.go` files:

Makefile

@@ -2,7 +2,7 @@ PROJECT_NAME = prometheus-slurm-exporter
 ifndef GOPATH
 	GOPATH=$(shell pwd):/usr/share/gocode
 endif
-GOFILES=accounts.go cpus.go gpus.go main.go nodes.go partitions.go queue.go scheduler.go users.go
+GOFILES=accounts.go cpus.go gpus.go main.go nodes.go partitions.go queue.go scheduler.go sshare.go users.go
 GOBIN=bin/$(PROJECT_NAME)
 
 build:

sshare.go

@@ -0,0 +1,38 @@
+/* Copyright 2021 Victor Penso
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+package main
+
+import (
+        "io/ioutil"
+        "os/exec"
+        "log"
+)
+
+func FairShareData() []byte {
+        cmd := exec.Command("sshare", "-o account,fairshare")
+        stdout, err := cmd.StdoutPipe()
+        if err != nil {
+                log.Fatal(err)
+        }
+        if err := cmd.Start(); err != nil {
+                log.Fatal(err)
+        }
+        out, _ := ioutil.ReadAll(stdout)
+        if err := cmd.Wait(); err != nil {
+                log.Fatal(err)
+        }
+        return out
+}