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Add tests for procstat systemd & cgroup matching (#3469)

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This commit is contained in:
Patrick Hemmer
2017-11-13 17:45:31 -05:00
committed by Daniel Nelson
parent 181a56018f
commit cbd346117a
2 changed files with 78 additions and 2 deletions
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8
plugins/inputs/procstat/procstat.go
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@@ -5,6 +5,7 @@ import (
"fmt"
"io/ioutil"
"os/exec"
"path/filepath"
"strconv"
"time"
@@ -297,9 +298,12 @@ func (p *Procstat) findPids() ([]PID, map[string]string, error) {
return pids, tags, err
}
// execCommand is so tests can mock out exec.Command usage.
var execCommand = exec.Command
func (p *Procstat) systemdUnitPIDs() ([]PID, error) {
var pids []PID
cmd := exec.Command("systemctl", "show", p.SystemdUnit)
cmd := execCommand("systemctl", "show", p.SystemdUnit)
out, err := cmd.Output()
if err != nil {
return nil, err
@@ -331,7 +335,7 @@ func (p *Procstat) cgroupPIDs() ([]PID, error) {
if procsPath[0] != '/' {
procsPath = "/sys/fs/cgroup/" + procsPath
}
procsPath = procsPath + "/cgroup.procs"
procsPath = filepath.Join(procsPath, "cgroup.procs")
out, err := ioutil.ReadFile(procsPath)
if err != nil {
return nil, err