这是indexloc提供的服务，不要输入任何密码
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Const metrics #4

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Merged
merged 3 commits into from
Jan 11, 2017
Merged

Const metrics #4

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16f6bea
update vendor package
sysulq Jan 11, 2017
2de8225
refactor with const metrics
sysulq Jan 11, 2017
d22111f
update promu.yml
sysulq Jan 11, 2017
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22 changes: 22 additions & 0 deletions .promu.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
repository:
path: github.com/hnlq715/nginx-vts-exporter
build:
flags: -a -tags netgo
ldflags: |
-X {{repoPath}}/vendor/github.com/prometheus/common/version.Version={{.Version}}
-X {{repoPath}}/vendor/github.com/prometheus/common/version.Revision={{.Revision}}
-X {{repoPath}}/vendor/github.com/prometheus/common/version.Branch={{.Branch}}
-X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
-X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
tarball:
files:
- LICENSE

crossbuild:
platforms:
- linux/amd64
- linux/386
- darwin/amd64
- darwin/386
- windows/amd64
- windows/386
1 change: 1 addition & 0 deletions VERSION
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@@ -0,0 +1 @@
0.1
206 changes: 94 additions & 112 deletions nginx_vts_exporter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -10,11 +10,11 @@ import (
"net/http"
"os"
"strconv"
"sync"
"time"

"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/version"
)

type NginxVts struct {
Expand Down Expand Up @@ -142,61 +142,48 @@ func FloatToString(input_num float64) string {
}

type Exporter struct {
URI string
mutex sync.RWMutex
URI string

serverMetrics, upstreamMetrics, cacheMetrics map[string]*prometheus.GaugeVec
serverMetrics, upstreamMetrics, cacheMetrics map[string]*prometheus.Desc
}

func newServerMetric(metricName string, docString string, labels []string) *prometheus.GaugeVec {
return prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: *metricsNamespace,
Name: "server_" + metricName,
Help: docString,
},
labels,
func newServerMetric(metricName string, docString string, labels []string) *prometheus.Desc {
return prometheus.NewDesc(
prometheus.BuildFQName(*metricsNamespace, "server", metricName),
docString, labels, nil,
)
}

func newUpstreamMetric(metricName string, docString string, labels []string) *prometheus.GaugeVec {
return prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: *metricsNamespace,
Name: "upstream_" + metricName,
Help: docString,
},
labels,
func newUpstreamMetric(metricName string, docString string, labels []string) *prometheus.Desc {
return prometheus.NewDesc(
prometheus.BuildFQName(*metricsNamespace, "upstream", metricName),
docString, labels, nil,
)
}

func newCacheMetric(metricName string, docString string, labels []string) *prometheus.GaugeVec {
return prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: *metricsNamespace,
Name: "cache_" + metricName,
Help: docString,
},
labels,
func newCacheMetric(metricName string, docString string, labels []string) *prometheus.Desc {
return prometheus.NewDesc(
prometheus.BuildFQName(*metricsNamespace, "cache", metricName),
docString, labels, nil,
)
}

func NewExporter(uri string) *Exporter {

return &Exporter{
URI: uri,
serverMetrics: map[string]*prometheus.GaugeVec{
serverMetrics: map[string]*prometheus.Desc{
"connections": newServerMetric("connections", "nginx connections", []string{"status"}),
"requests": newServerMetric("requests", "requests counter", []string{"host", "code"}),
"bytes": newServerMetric("bytes", "request/response bytes", []string{"host", "direction"}),
"cache": newServerMetric("cache", "cache counter", []string{"host", "status"}),
},
upstreamMetrics: map[string]*prometheus.GaugeVec{
upstreamMetrics: map[string]*prometheus.Desc{
"requests": newUpstreamMetric("requests", "requests counter", []string{"upstream", "code"}),
"bytes": newUpstreamMetric("bytes", "request/response bytes", []string{"upstream", "direction"}),
"response": newUpstreamMetric("response", "request response time", []string{"upstream", "backend"}),
},
cacheMetrics: map[string]*prometheus.GaugeVec{
cacheMetrics: map[string]*prometheus.Desc{
"requests": newCacheMetric("requests", "cache requests counter", []string{"zone", "status"}),
"bytes": newCacheMetric("bytes", "cache request/response bytes", []string{"zone", "direction"}),
},
Expand All @@ -205,51 +192,18 @@ func NewExporter(uri string) *Exporter {

func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
for _, m := range e.serverMetrics {
m.Describe(ch)
ch <- m
}
for _, m := range e.upstreamMetrics {
m.Describe(ch)
ch <- m
}
for _, m := range e.cacheMetrics {
m.Describe(ch)
ch <- m
}
}

func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
e.mutex.Lock()
defer e.mutex.Unlock()

e.resetMetrics()
e.scrape()

e.collectMetrics(ch)
}

func (e *Exporter) resetMetrics() {
for _, m := range e.serverMetrics {
m.Reset()
}
for _, m := range e.upstreamMetrics {
m.Reset()
}
for _, m := range e.cacheMetrics {
m.Reset()
}
}

func (e *Exporter) collectMetrics(metrics chan<- prometheus.Metric) {
for _, m := range e.serverMetrics {
m.Collect(metrics)
}
for _, m := range e.upstreamMetrics {
m.Collect(metrics)
}
for _, m := range e.cacheMetrics {
m.Collect(metrics)
}
}

func (e *Exporter) scrape() {
body, err := fetchHTTP(e.URI, 2*time.Second)()
if err != nil {
log.Println("fetchHTTP failed", err)
Expand All @@ -270,63 +224,78 @@ func (e *Exporter) scrape() {
return
}

e.serverMetrics["connections"].WithLabelValues("active").Set(float64(nginxVtx.Connections.Active))
e.serverMetrics["connections"].WithLabelValues("reading").Set(float64(nginxVtx.Connections.Reading))
e.serverMetrics["connections"].WithLabelValues("waiting").Set(float64(nginxVtx.Connections.Waiting))
e.serverMetrics["connections"].WithLabelValues("writing").Set(float64(nginxVtx.Connections.Writing))
e.serverMetrics["connections"].WithLabelValues("accepted").Set(float64(nginxVtx.Connections.Accepted))
e.serverMetrics["connections"].WithLabelValues("handled").Set(float64(nginxVtx.Connections.Handled))
e.serverMetrics["connections"].WithLabelValues("requests").Set(float64(nginxVtx.Connections.Requests))
// connections
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Active), "active")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Reading), "reading")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Waiting), "waiting")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Writing), "writing")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Accepted), "accepted")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Handled), "handled")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["connections"], prometheus.GaugeValue, float64(nginxVtx.Connections.Requests), "requests")

// ServerZones
for host, s := range nginxVtx.ServerZones {
e.serverMetrics["requests"].WithLabelValues(host, "total").Set(float64(s.RequestCounter))
e.serverMetrics["requests"].WithLabelValues(host, "1xx").Set(float64(s.Responses.OneXx))
e.serverMetrics["requests"].WithLabelValues(host, "2xx").Set(float64(s.Responses.TwoXx))
e.serverMetrics["requests"].WithLabelValues(host, "3xx").Set(float64(s.Responses.ThreeXx))
e.serverMetrics["requests"].WithLabelValues(host, "4xx").Set(float64(s.Responses.FourXx))
e.serverMetrics["requests"].WithLabelValues(host, "5xx").Set(float64(s.Responses.FiveXx))

e.serverMetrics["cache"].WithLabelValues(host, "bypass").Set(float64(s.Responses.Bypass))
e.serverMetrics["cache"].WithLabelValues(host, "expired").Set(float64(s.Responses.Expired))
e.serverMetrics["cache"].WithLabelValues(host, "hit").Set(float64(s.Responses.Hit))
e.serverMetrics["cache"].WithLabelValues(host, "miss").Set(float64(s.Responses.Miss))
e.serverMetrics["cache"].WithLabelValues(host, "revalidated").Set(float64(s.Responses.Revalidated))
e.serverMetrics["cache"].WithLabelValues(host, "scarce").Set(float64(s.Responses.Scarce))
e.serverMetrics["cache"].WithLabelValues(host, "stale").Set(float64(s.Responses.Stale))
e.serverMetrics["cache"].WithLabelValues(host, "updating").Set(float64(s.Responses.Updating))

e.serverMetrics["bytes"].WithLabelValues(host, "in").Set(float64(s.InBytes))
e.serverMetrics["bytes"].WithLabelValues(host, "out").Set(float64(s.OutBytes))
ch <- prometheus.MustNewConstMetric(e.serverMetrics["requests"], prometheus.CounterValue, float64(s.RequestCounter), host, "total")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["requests"], prometheus.CounterValue, float64(s.Responses.OneXx), host, "1xx")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["requests"], prometheus.CounterValue, float64(s.Responses.TwoXx), host, "2xx")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["requests"], prometheus.CounterValue, float64(s.Responses.ThreeXx), host, "3xx")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["requests"], prometheus.CounterValue, float64(s.Responses.FourXx), host, "4xx")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["requests"], prometheus.CounterValue, float64(s.Responses.FiveXx), host, "5xx")

ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Bypass), host, "bypass")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Expired), host, "expired")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Hit), host, "hit")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Miss), host, "miss")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Revalidated), host, "revalidated")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Scarce), host, "scarce")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Stale), host, "stale")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["cache"], prometheus.CounterValue, float64(s.Responses.Updating), host, "updating")

ch <- prometheus.MustNewConstMetric(e.serverMetrics["bytes"], prometheus.CounterValue, float64(s.InBytes), host, "in")
ch <- prometheus.MustNewConstMetric(e.serverMetrics["bytes"], prometheus.CounterValue, float64(s.OutBytes), host, "out")
}

// UpstreamZones
for name, upstreamList := range nginxVtx.UpstreamZones {
var total, one, two, three, four, five, inbytes, outbytes float64
for _, s := range upstreamList {
e.upstreamMetrics["requests"].WithLabelValues(name, "total").Add(float64(s.RequestCounter))
e.upstreamMetrics["requests"].WithLabelValues(name, "1xx").Add(float64(s.Responses.OneXx))
e.upstreamMetrics["requests"].WithLabelValues(name, "2xx").Add(float64(s.Responses.TwoXx))
e.upstreamMetrics["requests"].WithLabelValues(name, "3xx").Add(float64(s.Responses.ThreeXx))
e.upstreamMetrics["requests"].WithLabelValues(name, "4xx").Add(float64(s.Responses.FourXx))
e.upstreamMetrics["requests"].WithLabelValues(name, "5xx").Add(float64(s.Responses.FiveXx))
total += float64(s.RequestCounter)
one += float64(s.Responses.OneXx)
two += float64(s.Responses.TwoXx)
three += float64(s.Responses.ThreeXx)
four += float64(s.Responses.FourXx)
five += float64(s.Responses.FiveXx)

e.upstreamMetrics["bytes"].WithLabelValues(name, "in").Add(float64(s.InBytes))
e.upstreamMetrics["bytes"].WithLabelValues(name, "out").Add(float64(s.OutBytes))
inbytes += float64(s.InBytes)
outbytes += float64(s.OutBytes)

e.upstreamMetrics["response"].WithLabelValues(name, s.Server).Add(float64(s.ResponseMsec))
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["response"], prometheus.GaugeValue, float64(s.ResponseMsec), name, s.Server)
}

ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["requests"], prometheus.CounterValue, total, name, "total")
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["requests"], prometheus.CounterValue, one, name, "1xx")
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["requests"], prometheus.CounterValue, two, name, "2xx")
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["requests"], prometheus.CounterValue, three, name, "3xx")
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["requests"], prometheus.CounterValue, four, name, "4xx")
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["requests"], prometheus.CounterValue, five, name, "5xx")

ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["bytes"], prometheus.CounterValue, inbytes, name, "in")
ch <- prometheus.MustNewConstMetric(e.upstreamMetrics["bytes"], prometheus.CounterValue, outbytes, name, "out")
}

// CacheZones
for zone, s := range nginxVtx.CacheZones {
e.cacheMetrics["requests"].WithLabelValues(zone, "bypass").Set(float64(s.Responses.Bypass))
e.cacheMetrics["requests"].WithLabelValues(zone, "expired").Set(float64(s.Responses.Expired))
e.cacheMetrics["requests"].WithLabelValues(zone, "hit").Set(float64(s.Responses.Hit))
e.cacheMetrics["requests"].WithLabelValues(zone, "miss").Set(float64(s.Responses.Miss))
e.cacheMetrics["requests"].WithLabelValues(zone, "revalidated").Set(float64(s.Responses.Revalidated))
e.cacheMetrics["requests"].WithLabelValues(zone, "scarce").Set(float64(s.Responses.Scarce))
e.cacheMetrics["requests"].WithLabelValues(zone, "stale").Set(float64(s.Responses.Stale))
e.cacheMetrics["requests"].WithLabelValues(zone, "updating").Set(float64(s.Responses.Updating))

e.cacheMetrics["bytes"].WithLabelValues(zone, "in").Set(float64(s.InBytes))
e.cacheMetrics["bytes"].WithLabelValues(zone, "out").Set(float64(s.OutBytes))
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Bypass), zone, "bypass")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Expired), zone, "expired")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Hit), zone, "hit")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Miss), zone, "miss")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Revalidated), zone, "revalidated")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Scarce), zone, "scarce")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Stale), zone, "stale")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["requests"], prometheus.CounterValue, float64(s.Responses.Updating), zone, "updating")

ch <- prometheus.MustNewConstMetric(e.cacheMetrics["bytes"], prometheus.CounterValue, float64(s.InBytes), zone, "in")
ch <- prometheus.MustNewConstMetric(e.cacheMetrics["bytes"], prometheus.CounterValue, float64(s.OutBytes), zone, "out")
}
}

Expand All @@ -347,16 +316,29 @@ func fetchHTTP(uri string, timeout time.Duration) func() (io.ReadCloser, error)
}

var (
showVersion = flag.Bool("version", false, "Print version information.")
listenAddress = flag.String("telemetry.address", ":9913", "Address on which to expose metrics.")
metricsEndpoint = flag.String("telemetry.endpoint", "/metrics", "Path under which to expose metrics.")
metricsNamespace = flag.String("metrics.namespace", "nginx", "Prometheus metrics namespace.")
nginxScrapeURI = flag.String("nginx.scrape_uri", "http://localhost/status", "URI to nginx stub status page")
insecure = flag.Bool("insecure", true, "Ignore server certificate if using https")
)

func init() {
prometheus.MustRegister(version.NewCollector("nginx_vts_exporter"))
}

func main() {
flag.Parse()

if *showVersion {
fmt.Fprintln(os.Stdout, version.Print("nginx_vts_exporter"))
os.Exit(0)
}

log.Printf("Starting nginx_vts_exporter %s", version.Info())
log.Printf("Build context %s", version.BuildContext())

exporter := NewExporter(*nginxScrapeURI)
prometheus.MustRegister(exporter)
prometheus.Unregister(prometheus.NewProcessCollector(os.Getpid(), ""))
Expand Down
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