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Add support for stats from /proc/net/snmp as well.

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This commit is contained in:
Jari Takkala 2015-06-17 16:05:09 -04:00
parent 5e86b55c46
commit 21ce0cbda9
2 changed files with 21 additions and 9 deletions
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24
collector/netstat_linux.go
View File

@ -15,6 +15,7 @@ import (
const (
procNetStat = "/proc/net/netstat"
procSNMPStat = "/proc/net/snmp"
netStatsSubsystem = "netstat"
)
@ -35,10 +36,19 @@ func NewNetStatCollector() (Collector, error) {
}
func (c *netStatCollector) Update(ch chan<- prometheus.Metric) (err error) {
netStats, err := getNetStats()
netStats, err := getNetStats(procNetStat)
if err != nil {
return fmt.Errorf("couldn't get netstats: %s", err)
}
snmpStats, err := getNetStats(procSNMPStat)
if err != nil {
return fmt.Errorf("couldn't get SNMP stats: %s", err)
}
// Merge the results of snmpStats into netStats (collisions are possible, but
// we know that the keys are always unique for the given use case)
for k, v := range snmpStats {
netStats[k] = v
}
for protocol, protocolStats := range netStats {
for name, value := range protocolStats {
key := protocol + "_" + name
@ -48,7 +58,7 @@ func (c *netStatCollector) Update(ch chan<- prometheus.Metric) (err error) {
Namespace: Namespace,
Subsystem: netStatsSubsystem,
Name: key,
Help: fmt.Sprintf("%s %s from /proc/net/netstat.", protocol, name),
Help: fmt.Sprintf("%s %s from /proc/net/{netstat,snmp}.", protocol, name),
},
)
}
@ -65,17 +75,17 @@ func (c *netStatCollector) Update(ch chan<- prometheus.Metric) (err error) {
return err
}
func getNetStats() (map[string]map[string]string, error) {
file, err := os.Open(procNetStat)
func getNetStats(fileName string) (map[string]map[string]string, error) {
file, err := os.Open(fileName)
if err != nil {
return nil, err
}
defer file.Close()
return parseNetStats(file)
return parseNetStats(file, fileName)
}
func parseNetStats(r io.Reader) (map[string]map[string]string, error) {
func parseNetStats(r io.Reader, fileName string) (map[string]map[string]string, error) {
var (
netStats = map[string]map[string]string{}
scanner = bufio.NewScanner(r)
@ -90,7 +100,7 @@ func parseNetStats(r io.Reader) (map[string]map[string]string, error) {
netStats[protocol] = map[string]string{}
if len(nameParts) != len(valueParts) {
return nil, fmt.Errorf("mismatch field count mismatch in %s: %s",
procNetStat, protocol)
fileName, protocol)
}
for i := 1; i < len(nameParts); i++ {
netStats[protocol][nameParts[i]] = valueParts[i]

6
collector/netstat_linux_test.go
View File

@ -5,14 +5,16 @@ import (
"testing"
)
var fileName = "fixtures/netstat"
func TestNetStats(t *testing.T) {
file, err := os.Open("fixtures/netstat")
file, err := os.Open(fileName)
if err != nil {
t.Fatal(err)
}
defer file.Close()
netStats, err := parseNetStats(file)
netStats, err := parseNetStats(file, fileName)
if err != nil {
t.Fatal(err)
}