package stats import ( "fmt" "log" "net" "net/http" "os" "strconv" "strings" "time" "github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus/collectors" "github.com/prometheus/client_golang/prometheus/promhttp" "github.com/prometheus/client_golang/prometheus/push" "github.com/seaweedfs/seaweedfs/weed/glog" ) // Readonly volume types const ( IsReadOnly = "IsReadOnly" NoWriteOrDelete = "noWriteOrDelete" NoWriteCanDelete = "noWriteCanDelete" IsDiskSpaceLow = "isDiskSpaceLow" ) var readOnlyVolumeTypes = [4]string{IsReadOnly, NoWriteOrDelete, NoWriteCanDelete, IsDiskSpaceLow} var ( Gather = prometheus.NewRegistry() MasterClientConnectCounter = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "SeaweedFS", Subsystem: "wdclient", Name: "connect_updates", Help: "Counter of master client leader updates.", }, []string{"type"}) MasterRaftIsleader = prometheus.NewGauge( prometheus.GaugeOpts{ Namespace: "SeaweedFS", Subsystem: "master", Name: "is_leader", Help: "is leader", }) MasterReceivedHeartbeatCounter = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "SeaweedFS", Subsystem: "master", Name: "received_heartbeats", 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"}) MasterLeaderChangeCounter = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "SeaweedFS", Subsystem: "master", Name: "leader_changes", Help: "Counter of master leader changes.", }, []string{"type"}) FilerRequestCounter = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "SeaweedFS", Subsystem: "filer", Name: "request_total", Help: "Counter of filer requests.", }, []string{"type"}) FilerRequestHistogram = prometheus.NewHistogramVec( prometheus.HistogramOpts{ Namespace: "SeaweedFS", Subsystem: "filer", Name: "request_seconds", Help: "Bucketed histogram of filer request processing time.", 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"}) 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"}) VolumeServerRequestCounter = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "request_total", Help: "Counter of volume server requests.", }, []string{"type"}) VolumeServerRequestHistogram = prometheus.NewHistogramVec( prometheus.HistogramOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "request_seconds", Help: "Bucketed histogram of volume server request processing time.", Buckets: prometheus.ExponentialBuckets(0.0001, 2, 24), }, []string{"type"}) VolumeServerVolumeCounter = prometheus.NewGaugeVec( prometheus.GaugeOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "volumes", Help: "Number of volumes or shards.", }, []string{"collection", "type"}) VolumeServerReadOnlyVolumeGauge = prometheus.NewGaugeVec( prometheus.GaugeOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "read_only_volumes", Help: "Number of read only volumes.", }, []string{"collection", "type"}) VolumeServerMaxVolumeCounter = prometheus.NewGauge( prometheus.GaugeOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "max_volumes", Help: "Maximum number of volumes.", }) VolumeServerDiskSizeGauge = prometheus.NewGaugeVec( prometheus.GaugeOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "total_disk_size", Help: "Actual disk size used by volumes.", }, []string{"collection", "type"}) VolumeServerResourceGauge = prometheus.NewGaugeVec( prometheus.GaugeOpts{ Namespace: "SeaweedFS", Subsystem: "volumeServer", Name: "resource", Help: "Resource usage", }, []string{"name", "type"}) S3RequestCounter = prometheus.NewCounterVec( prometheus.CounterOpts{ Namespace: "SeaweedFS", Subsystem: "s3", Name: "request_total", Help: "Counter of s3 requests.", }, []string{"type", "code", "bucket"}) 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() { Gather.MustRegister(MasterClientConnectCounter) Gather.MustRegister(MasterRaftIsleader) Gather.MustRegister(MasterReceivedHeartbeatCounter) Gather.MustRegister(MasterLeaderChangeCounter) Gather.MustRegister(MasterReplicaPlacementMismatch) Gather.MustRegister(FilerRequestCounter) Gather.MustRegister(FilerRequestHistogram) Gather.MustRegister(FilerStoreCounter) Gather.MustRegister(FilerStoreHistogram) Gather.MustRegister(FilerSyncOffsetGauge) Gather.MustRegister(FilerServerLastSendTsOfSubscribeGauge) Gather.MustRegister(collectors.NewGoCollector()) Gather.MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{})) Gather.MustRegister(VolumeServerRequestCounter) Gather.MustRegister(VolumeServerRequestHistogram) Gather.MustRegister(VolumeServerVolumeCounter) Gather.MustRegister(VolumeServerMaxVolumeCounter) Gather.MustRegister(VolumeServerReadOnlyVolumeGauge) Gather.MustRegister(VolumeServerDiskSizeGauge) Gather.MustRegister(VolumeServerResourceGauge) Gather.MustRegister(S3RequestCounter) Gather.MustRegister(S3RequestHistogram) } func LoopPushingMetric(name, instance, addr string, intervalSeconds int) { if addr == "" || intervalSeconds == 0 { return } glog.V(0).Infof("%s server sends metrics to %s every %d seconds", name, addr, intervalSeconds) pusher := push.New(addr, name).Gatherer(Gather).Grouping("instance", instance) for { 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 } time.Sleep(time.Duration(intervalSeconds) * time.Second) } } func StartMetricsServer(port int) { if port == 0 { return } http.Handle("/metrics", promhttp.HandlerFor(Gather, promhttp.HandlerOpts{})) log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), nil)) } func SourceName(port uint32) string { hostname, err := os.Hostname() if err != nil { return "unknown" } return net.JoinHostPort(hostname, strconv.Itoa(int(port))) } // 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") }