seaweedfs/weed/stats/metrics.go

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package stats
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import (
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"fmt"
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"log"
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"net"
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"net/http"
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"os"
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"strconv"
"strings"
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"time"
"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/prometheus/client_golang/prometheus/push"
"github.com/seaweedfs/seaweedfs/weed/glog"
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)
// Readonly volume types
const (
IsReadOnly = "IsReadOnly"
NoWriteOrDelete = "noWriteOrDelete"
NoWriteCanDelete = "noWriteCanDelete"
IsDiskSpaceLow = "isDiskSpaceLow"
)
var readOnlyVolumeTypes = [4]string{IsReadOnly, NoWriteOrDelete, NoWriteCanDelete, IsDiskSpaceLow}
var (
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Gather = prometheus.NewRegistry()
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MasterClientConnectCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "wdclient",
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Name: "connect_updates",
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Help: "Counter of master client leader updates.",
}, []string{"type"})
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MasterRaftIsleader = prometheus.NewGauge(
prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "master",
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Name: "is_leader",
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Help: "is leader",
})
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MasterReceivedHeartbeatCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "master",
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Name: "received_heartbeats",
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Help: "Counter of master received heartbeat.",
}, []string{"type"})
MasterReplicaPlacementMismatch = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "master",
Name: "replica_placement_mismatch",
Help: "replica placement mismatch",
}, []string{"collection", "id"})
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MasterLeaderChangeCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "master",
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Name: "leader_changes",
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Help: "Counter of master leader changes.",
}, []string{"type"})
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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"})
FilerServerLastSendTsOfSubscribeGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "filer",
Name: "last_send_timestamp_of_subscribe",
Help: "The last send timestamp of the filer subscription.",
}, []string{"sourceFiler", "clientName", "path"})
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FilerStoreCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "filerStore",
Name: "request_total",
Help: "Counter of filer store requests.",
}, []string{"store", "type"})
FilerStoreHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "SeaweedFS",
Subsystem: "filerStore",
Name: "request_seconds",
Help: "Bucketed histogram of filer store request processing time.",
Buckets: prometheus.ExponentialBuckets(0.0001, 2, 24),
}, []string{"store", "type"})
FilerSyncOffsetGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "filerSync",
Name: "sync_offset",
Help: "The offset of the filer synchronization service.",
}, []string{"sourceFiler", "targetFiler", "clientName", "path"})
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VolumeServerRequestCounter = prometheus.NewCounterVec(
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prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "request_total",
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Help: "Counter of volume server requests.",
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}, []string{"type"})
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VolumeServerRequestHistogram = prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "request_seconds",
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Help: "Bucketed histogram of volume server request processing time.",
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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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VolumeServerReadOnlyVolumeGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "read_only_volumes",
Help: "Number of read only volumes.",
}, []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"})
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VolumeServerResourceGauge = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Namespace: "SeaweedFS",
Subsystem: "volumeServer",
Name: "resource",
Help: "Resource usage",
}, []string{"name", "type"})
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S3RequestCounter = prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: "SeaweedFS",
Subsystem: "s3",
Name: "request_total",
Help: "Counter of s3 requests.",
}, []string{"type", "code", "bucket"})
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S3RequestHistogram = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "SeaweedFS",
Subsystem: "s3",
Name: "request_seconds",
Help: "Bucketed histogram of s3 request processing time.",
Buckets: prometheus.ExponentialBuckets(0.0001, 2, 24),
}, []string{"type", "bucket"})
)
func init() {
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Gather.MustRegister(MasterClientConnectCounter)
Gather.MustRegister(MasterRaftIsleader)
Gather.MustRegister(MasterReceivedHeartbeatCounter)
Gather.MustRegister(MasterLeaderChangeCounter)
Gather.MustRegister(MasterReplicaPlacementMismatch)
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Gather.MustRegister(FilerRequestCounter)
Gather.MustRegister(FilerRequestHistogram)
Gather.MustRegister(FilerStoreCounter)
Gather.MustRegister(FilerStoreHistogram)
Gather.MustRegister(FilerSyncOffsetGauge)
Gather.MustRegister(FilerServerLastSendTsOfSubscribeGauge)
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Gather.MustRegister(collectors.NewGoCollector())
Gather.MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}))
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Gather.MustRegister(VolumeServerRequestCounter)
Gather.MustRegister(VolumeServerRequestHistogram)
Gather.MustRegister(VolumeServerVolumeCounter)
Gather.MustRegister(VolumeServerMaxVolumeCounter)
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Gather.MustRegister(VolumeServerReadOnlyVolumeGauge)
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Gather.MustRegister(VolumeServerDiskSizeGauge)
Gather.MustRegister(VolumeServerResourceGauge)
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Gather.MustRegister(S3RequestCounter)
Gather.MustRegister(S3RequestHistogram)
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}
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func LoopPushingMetric(name, instance, addr string, intervalSeconds int) {
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if addr == "" || intervalSeconds == 0 {
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return
}
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glog.V(0).Infof("%s server sends metrics to %s every %d seconds", name, addr, intervalSeconds)
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pusher := push.New(addr, name).Gatherer(Gather).Grouping("instance", instance)
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for {
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err := pusher.Push()
if err != nil && !strings.HasPrefix(err.Error(), "unexpected status code 200") {
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)
}
}
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func StartMetricsServer(port int) {
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if port == 0 {
return
}
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http.Handle("/metrics", promhttp.HandlerFor(Gather, promhttp.HandlerOpts{}))
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log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), nil))
}
func SourceName(port uint32) string {
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hostname, err := os.Hostname()
if err != nil {
return "unknown"
}
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return net.JoinHostPort(hostname, strconv.Itoa(int(port)))
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}
// todo - can be changed to DeletePartialMatch when https://github.com/prometheus/client_golang/pull/1013 gets released
func DeleteCollectionMetrics(collection string) {
VolumeServerDiskSizeGauge.DeleteLabelValues(collection, "normal")
for _, volume_type := range readOnlyVolumeTypes {
VolumeServerReadOnlyVolumeGauge.DeleteLabelValues(collection, volume_type)
}
VolumeServerVolumeCounter.DeleteLabelValues(collection, "volume")
}