seaweedfs/weed/stats/metrics.go

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package stats
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import (
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"fmt"
"os"
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"time"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/push"
)
var (
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FilerGather = prometheus.NewRegistry()
VolumeServerGather = prometheus.NewRegistry()
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FilerRequestCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "filer",
Name: "request_total",
Help: "Counter of filer requests.",
}, []string{"type"})
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FilerRequestHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "SeaweedFS",
Subsystem: "filer",
Name: "request_seconds",
Help: "Bucketed histogram of filer request processing time.",
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Buckets: prometheus.ExponentialBuckets(0.0001, 2, 24),
}, []string{"type"})
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VolumeServerRequestCounter = prometheus.NewCounterVec(
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prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "request_total",
Help: "Counter of filer requests.",
}, []string{"type"})
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VolumeServerRequestHistogram = prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "request_seconds",
Help: "Bucketed histogram of filer request processing time.",
Buckets: prometheus.ExponentialBuckets(0.0001, 2, 24),
}, []string{"type"})
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VolumeServerVolumeCounter = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "volumes",
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Help: "Number of volumes or shards.",
}, []string{"collection", "type"})
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VolumeServerMaxVolumeCounter = prometheus.NewGauge(
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prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
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Name: "max_volumes",
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Help: "Maximum number of volumes.",
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})
VolumeServerDiskSizeGauge = prometheus.NewGaugeVec(
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prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "total_disk_size",
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Help: "Actual disk size used by volumes.",
}, []string{"collection", "type"})
)
func init() {
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FilerGather.MustRegister(FilerRequestCounter)
FilerGather.MustRegister(FilerRequestHistogram)
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VolumeServerGather.MustRegister(VolumeServerRequestCounter)
VolumeServerGather.MustRegister(VolumeServerRequestHistogram)
VolumeServerGather.MustRegister(VolumeServerVolumeCounter)
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VolumeServerGather.MustRegister(VolumeServerMaxVolumeCounter)
VolumeServerGather.MustRegister(VolumeServerDiskSizeGauge)
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}
func LoopPushingMetric(name, instance string, gatherer *prometheus.Registry, fnGetMetricsDest func() (addr string, intervalSeconds int)) {
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addr, intervalSeconds := fnGetMetricsDest()
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pusher := push.New(addr, name).Gatherer(gatherer).Grouping("instance", instance)
currentAddr := addr
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for {
if currentAddr != "" {
err := pusher.Push()
if err != nil {
glog.V(0).Infof("could not push metrics to prometheus push gateway %s: %v", addr, err)
}
}
if intervalSeconds <= 0 {
intervalSeconds = 15
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}
time.Sleep(time.Duration(intervalSeconds) * time.Second)
addr, intervalSeconds = fnGetMetricsDest()
if currentAddr != addr {
pusher = push.New(addr, name).Gatherer(gatherer).Grouping("instance", instance)
currentAddr = addr
}
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}
}
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func SourceName(port int) string {
hostname, err := os.Hostname()
if err != nil {
return "unknown"
}
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return fmt.Sprintf("%s:%d", hostname, port)
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}