feat(inputs.procstat): Add status field (#13505)

plugins/inputs/procstat/README.md

@@ -124,6 +124,7 @@ the `win_perf_counters` input plugin as a more mature alternative.
     - num_threads (int)
     - pid (int)
     - ppid (int)
+    - status (string)
     - read_bytes (int, *telegraf* may need to be ran as **root**)
     - read_count (int, *telegraf* may need to be ran as **root**)
     - realtime_priority (int)

plugins/inputs/procstat/process.go

@@ -28,6 +28,7 @@ type Process interface {
 	Username() (string, error)
 	CreateTime() (int64, error)
 	Ppid() (int32, error)
+	Status() ([]string, error)
 }
 
 type PIDFinder interface {

plugins/inputs/procstat/procstat.go

@@ -284,6 +284,11 @@ func (p *Procstat) addMetric(proc Process, acc telegraf.Accumulator, t time.Time
 		fields[prefix+"ppid"] = ppid
 	}
 
+	status, err := proc.Status()
+	if err == nil {
+		fields[prefix+"status"] = status[0]
+	}
+
 	acc.AddFields("procstat", fields, proc.Tags(), t)
 }
 

plugins/inputs/procstat/procstat_test.go

@@ -169,6 +169,10 @@ func (p *testProc) Ppid() (int32, error) {
 	return 0, nil
 }
 
+func (p *testProc) Status() ([]string, error) {
+	return []string{"running"}, nil
+}
+
 var pid = PID(42)
 var exe = "foo"