func (c *processesCollector) Update(ch chan<- prometheus.Metric) error {
processes, err := procfs.AllProcs()
if err != nil {
return fmt.Errorf("failed to get processes: %s", err)
}
for _, process := range processes {
cmd, err := process.Comm()
if err != nil {
log.Debugf("Failed to get process command: %s", err)
continue
}
stats, err := process.NewStat()
if err != nil {
log.Debugf("Failed to get process stats: %s", err)
continue
}
// skip processes with empty stats
if stats.ResidentMemory() == 0 || stats.CPUTime() == 0 {
log.Debugf("Skipping process %s due to empty stats", cmd)
continue
}
c.metrics[0].(*prometheus.GaugeVec).WithLabelValues(cmd).Set(float64(stats.ResidentMemory()))
c.metrics[1].(*prometheus.GaugeVec).WithLabelValues(cmd).Set(stats.CPUTime())
}
for _, c := range c.metrics {
c.Collect(ch)
}
return err
}
func (ps ProcStatus) procStatusMetrics() []metric.Metric {
procs, err := procfs.AllProcs()
if err != nil {
ps.log.Warn("Error getting processes: ", err)
return nil
}
ret := []metric.Metric{}
for _, proc := range procs {
cmd, err := proc.CmdLine()
if err != nil {
ps.log.Warn("Error getting command line: ", err)
continue
}
if ps.matches(cmd, proc.Comm) {
ret = append(ret, ps.getMetrics(proc, cmd)...)
}
}
return ret
}
func (ps ProcStatus) procStatusMetrics() []metric.Metric {
procs, err := procfs.AllProcs()
if err != nil {
ps.log.Warn("Error getting processes: ", err)
return nil
}
ret := []metric.Metric{}
for _, proc := range procs {
cmd, err := proc.CmdLine()
if err != nil {
ps.log.Warn("Error getting command line: ", err)
continue
}
if len(ps.processName) == 0 || len(cmd) > 0 && strings.Contains(cmd[0], ps.processName) {
ret = append(ret, ps.getMetrics(proc, cmd)...)
}
}
return ret
}