566 lines
18 KiB
Go
566 lines
18 KiB
Go
package origin
|
|
|
|
import (
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/cloudflare/cloudflared/h2mux"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
const (
|
|
metricsNamespace = "cloudflared"
|
|
tunnelSubsystem = "tunnel"
|
|
muxerSubsystem = "muxer"
|
|
)
|
|
|
|
type muxerMetrics struct {
|
|
rtt *prometheus.GaugeVec
|
|
rttMin *prometheus.GaugeVec
|
|
rttMax *prometheus.GaugeVec
|
|
receiveWindowAve *prometheus.GaugeVec
|
|
sendWindowAve *prometheus.GaugeVec
|
|
receiveWindowMin *prometheus.GaugeVec
|
|
receiveWindowMax *prometheus.GaugeVec
|
|
sendWindowMin *prometheus.GaugeVec
|
|
sendWindowMax *prometheus.GaugeVec
|
|
inBoundRateCurr *prometheus.GaugeVec
|
|
inBoundRateMin *prometheus.GaugeVec
|
|
inBoundRateMax *prometheus.GaugeVec
|
|
outBoundRateCurr *prometheus.GaugeVec
|
|
outBoundRateMin *prometheus.GaugeVec
|
|
outBoundRateMax *prometheus.GaugeVec
|
|
compBytesBefore *prometheus.GaugeVec
|
|
compBytesAfter *prometheus.GaugeVec
|
|
compRateAve *prometheus.GaugeVec
|
|
}
|
|
|
|
type TunnelMetrics struct {
|
|
haConnections prometheus.Gauge
|
|
activeStreams prometheus.Gauge
|
|
totalRequests prometheus.Counter
|
|
requestsPerTunnel *prometheus.CounterVec
|
|
// concurrentRequestsLock is a mutex for concurrentRequests and maxConcurrentRequests
|
|
concurrentRequestsLock sync.Mutex
|
|
concurrentRequestsPerTunnel *prometheus.GaugeVec
|
|
// concurrentRequests records count of concurrent requests for each tunnel
|
|
concurrentRequests map[string]uint64
|
|
maxConcurrentRequestsPerTunnel *prometheus.GaugeVec
|
|
// concurrentRequests records max count of concurrent requests for each tunnel
|
|
maxConcurrentRequests map[string]uint64
|
|
timerRetries prometheus.Gauge
|
|
responseByCode *prometheus.CounterVec
|
|
responseCodePerTunnel *prometheus.CounterVec
|
|
serverLocations *prometheus.GaugeVec
|
|
// locationLock is a mutex for oldServerLocations
|
|
locationLock sync.Mutex
|
|
// oldServerLocations stores the last server the tunnel was connected to
|
|
oldServerLocations map[string]string
|
|
|
|
regSuccess *prometheus.CounterVec
|
|
regFail *prometheus.CounterVec
|
|
authSuccess prometheus.Counter
|
|
authFail *prometheus.CounterVec
|
|
rpcFail *prometheus.CounterVec
|
|
|
|
muxerMetrics *muxerMetrics
|
|
tunnelsHA tunnelsForHA
|
|
userHostnamesCounts *prometheus.CounterVec
|
|
}
|
|
|
|
func newMuxerMetrics() *muxerMetrics {
|
|
rtt := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "rtt",
|
|
Help: "Round-trip time in millisecond",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(rtt)
|
|
|
|
rttMin := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "rtt_min",
|
|
Help: "Shortest round-trip time in millisecond",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(rttMin)
|
|
|
|
rttMax := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "rtt_max",
|
|
Help: "Longest round-trip time in millisecond",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(rttMax)
|
|
|
|
receiveWindowAve := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "receive_window_ave",
|
|
Help: "Average receive window size in bytes",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(receiveWindowAve)
|
|
|
|
sendWindowAve := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "send_window_ave",
|
|
Help: "Average send window size in bytes",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(sendWindowAve)
|
|
|
|
receiveWindowMin := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "receive_window_min",
|
|
Help: "Smallest receive window size in bytes",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(receiveWindowMin)
|
|
|
|
receiveWindowMax := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "receive_window_max",
|
|
Help: "Largest receive window size in bytes",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(receiveWindowMax)
|
|
|
|
sendWindowMin := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "send_window_min",
|
|
Help: "Smallest send window size in bytes",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(sendWindowMin)
|
|
|
|
sendWindowMax := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "send_window_max",
|
|
Help: "Largest send window size in bytes",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(sendWindowMax)
|
|
|
|
inBoundRateCurr := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "inbound_bytes_per_sec_curr",
|
|
Help: "Current inbounding bytes per second, 0 if there is no incoming connection",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(inBoundRateCurr)
|
|
|
|
inBoundRateMin := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "inbound_bytes_per_sec_min",
|
|
Help: "Minimum non-zero inbounding bytes per second",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(inBoundRateMin)
|
|
|
|
inBoundRateMax := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "inbound_bytes_per_sec_max",
|
|
Help: "Maximum inbounding bytes per second",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(inBoundRateMax)
|
|
|
|
outBoundRateCurr := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "outbound_bytes_per_sec_curr",
|
|
Help: "Current outbounding bytes per second, 0 if there is no outgoing traffic",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(outBoundRateCurr)
|
|
|
|
outBoundRateMin := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "outbound_bytes_per_sec_min",
|
|
Help: "Minimum non-zero outbounding bytes per second",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(outBoundRateMin)
|
|
|
|
outBoundRateMax := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "outbound_bytes_per_sec_max",
|
|
Help: "Maximum outbounding bytes per second",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(outBoundRateMax)
|
|
|
|
compBytesBefore := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "comp_bytes_before",
|
|
Help: "Bytes sent via cross-stream compression, pre compression",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(compBytesBefore)
|
|
|
|
compBytesAfter := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "comp_bytes_after",
|
|
Help: "Bytes sent via cross-stream compression, post compression",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(compBytesAfter)
|
|
|
|
compRateAve := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: muxerSubsystem,
|
|
Name: "comp_rate_ave",
|
|
Help: "Average outbound cross-stream compression ratio",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(compRateAve)
|
|
|
|
return &muxerMetrics{
|
|
rtt: rtt,
|
|
rttMin: rttMin,
|
|
rttMax: rttMax,
|
|
receiveWindowAve: receiveWindowAve,
|
|
sendWindowAve: sendWindowAve,
|
|
receiveWindowMin: receiveWindowMin,
|
|
receiveWindowMax: receiveWindowMax,
|
|
sendWindowMin: sendWindowMin,
|
|
sendWindowMax: sendWindowMax,
|
|
inBoundRateCurr: inBoundRateCurr,
|
|
inBoundRateMin: inBoundRateMin,
|
|
inBoundRateMax: inBoundRateMax,
|
|
outBoundRateCurr: outBoundRateCurr,
|
|
outBoundRateMin: outBoundRateMin,
|
|
outBoundRateMax: outBoundRateMax,
|
|
compBytesBefore: compBytesBefore,
|
|
compBytesAfter: compBytesAfter,
|
|
compRateAve: compRateAve,
|
|
}
|
|
}
|
|
|
|
func (m *muxerMetrics) update(connectionID string, metrics *h2mux.MuxerMetrics) {
|
|
m.rtt.WithLabelValues(connectionID).Set(convertRTTMilliSec(metrics.RTT))
|
|
m.rttMin.WithLabelValues(connectionID).Set(convertRTTMilliSec(metrics.RTTMin))
|
|
m.rttMax.WithLabelValues(connectionID).Set(convertRTTMilliSec(metrics.RTTMax))
|
|
m.receiveWindowAve.WithLabelValues(connectionID).Set(metrics.ReceiveWindowAve)
|
|
m.sendWindowAve.WithLabelValues(connectionID).Set(metrics.SendWindowAve)
|
|
m.receiveWindowMin.WithLabelValues(connectionID).Set(float64(metrics.ReceiveWindowMin))
|
|
m.receiveWindowMax.WithLabelValues(connectionID).Set(float64(metrics.ReceiveWindowMax))
|
|
m.sendWindowMin.WithLabelValues(connectionID).Set(float64(metrics.SendWindowMin))
|
|
m.sendWindowMax.WithLabelValues(connectionID).Set(float64(metrics.SendWindowMax))
|
|
m.inBoundRateCurr.WithLabelValues(connectionID).Set(float64(metrics.InBoundRateCurr))
|
|
m.inBoundRateMin.WithLabelValues(connectionID).Set(float64(metrics.InBoundRateMin))
|
|
m.inBoundRateMax.WithLabelValues(connectionID).Set(float64(metrics.InBoundRateMax))
|
|
m.outBoundRateCurr.WithLabelValues(connectionID).Set(float64(metrics.OutBoundRateCurr))
|
|
m.outBoundRateMin.WithLabelValues(connectionID).Set(float64(metrics.OutBoundRateMin))
|
|
m.outBoundRateMax.WithLabelValues(connectionID).Set(float64(metrics.OutBoundRateMax))
|
|
m.compBytesBefore.WithLabelValues(connectionID).Set(float64(metrics.CompBytesBefore.Value()))
|
|
m.compBytesAfter.WithLabelValues(connectionID).Set(float64(metrics.CompBytesAfter.Value()))
|
|
m.compRateAve.WithLabelValues(connectionID).Set(float64(metrics.CompRateAve()))
|
|
}
|
|
|
|
func convertRTTMilliSec(t time.Duration) float64 {
|
|
return float64(t / time.Millisecond)
|
|
}
|
|
|
|
// Metrics that can be collected without asking the edge
|
|
func NewTunnelMetrics() *TunnelMetrics {
|
|
haConnections := prometheus.NewGauge(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "ha_connections",
|
|
Help: "Number of active ha connections",
|
|
})
|
|
prometheus.MustRegister(haConnections)
|
|
|
|
activeStreams := h2mux.NewActiveStreamsMetrics(metricsNamespace, tunnelSubsystem)
|
|
|
|
totalRequests := prometheus.NewCounter(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "total_requests",
|
|
Help: "Amount of requests proxied through all the tunnels",
|
|
})
|
|
prometheus.MustRegister(totalRequests)
|
|
|
|
requestsPerTunnel := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "requests_per_tunnel",
|
|
Help: "Amount of requests proxied through each tunnel",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(requestsPerTunnel)
|
|
|
|
concurrentRequestsPerTunnel := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "concurrent_requests_per_tunnel",
|
|
Help: "Concurrent requests proxied through each tunnel",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(concurrentRequestsPerTunnel)
|
|
|
|
maxConcurrentRequestsPerTunnel := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "max_concurrent_requests_per_tunnel",
|
|
Help: "Largest number of concurrent requests proxied through each tunnel so far",
|
|
},
|
|
[]string{"connection_id"},
|
|
)
|
|
prometheus.MustRegister(maxConcurrentRequestsPerTunnel)
|
|
|
|
timerRetries := prometheus.NewGauge(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "timer_retries",
|
|
Help: "Unacknowledged heart beats count",
|
|
})
|
|
prometheus.MustRegister(timerRetries)
|
|
|
|
responseByCode := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "response_by_code",
|
|
Help: "Count of responses by HTTP status code",
|
|
},
|
|
[]string{"status_code"},
|
|
)
|
|
prometheus.MustRegister(responseByCode)
|
|
|
|
responseCodePerTunnel := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "response_code_per_tunnel",
|
|
Help: "Count of responses by HTTP status code fore each tunnel",
|
|
},
|
|
[]string{"connection_id", "status_code"},
|
|
)
|
|
prometheus.MustRegister(responseCodePerTunnel)
|
|
|
|
serverLocations := prometheus.NewGaugeVec(
|
|
prometheus.GaugeOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "server_locations",
|
|
Help: "Where each tunnel is connected to. 1 means current location, 0 means previous locations.",
|
|
},
|
|
[]string{"connection_id", "location"},
|
|
)
|
|
prometheus.MustRegister(serverLocations)
|
|
|
|
rpcFail := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "tunnel_rpc_fail",
|
|
Help: "Count of RPC connection errors by type",
|
|
},
|
|
[]string{"error"},
|
|
)
|
|
prometheus.MustRegister(rpcFail)
|
|
|
|
registerFail := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "tunnel_register_fail",
|
|
Help: "Count of tunnel registration errors by type",
|
|
},
|
|
[]string{"error", "rpcName"},
|
|
)
|
|
prometheus.MustRegister(registerFail)
|
|
|
|
userHostnamesCounts := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "user_hostnames_counts",
|
|
Help: "Which user hostnames cloudflared is serving",
|
|
},
|
|
[]string{"userHostname"},
|
|
)
|
|
prometheus.MustRegister(userHostnamesCounts)
|
|
|
|
registerSuccess := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "tunnel_register_success",
|
|
Help: "Count of successful tunnel registrations",
|
|
},
|
|
[]string{"rpcName"},
|
|
)
|
|
prometheus.MustRegister(registerSuccess)
|
|
|
|
authSuccess := prometheus.NewCounter(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "tunnel_authenticate_success",
|
|
Help: "Count of successful tunnel authenticate",
|
|
},
|
|
)
|
|
prometheus.MustRegister(authSuccess)
|
|
|
|
authFail := prometheus.NewCounterVec(
|
|
prometheus.CounterOpts{
|
|
Namespace: metricsNamespace,
|
|
Subsystem: tunnelSubsystem,
|
|
Name: "tunnel_authenticate_fail",
|
|
Help: "Count of tunnel authenticate errors by type",
|
|
},
|
|
[]string{"error"},
|
|
)
|
|
prometheus.MustRegister(authFail)
|
|
|
|
return &TunnelMetrics{
|
|
haConnections: haConnections,
|
|
activeStreams: activeStreams,
|
|
totalRequests: totalRequests,
|
|
requestsPerTunnel: requestsPerTunnel,
|
|
concurrentRequestsPerTunnel: concurrentRequestsPerTunnel,
|
|
concurrentRequests: make(map[string]uint64),
|
|
maxConcurrentRequestsPerTunnel: maxConcurrentRequestsPerTunnel,
|
|
maxConcurrentRequests: make(map[string]uint64),
|
|
timerRetries: timerRetries,
|
|
responseByCode: responseByCode,
|
|
responseCodePerTunnel: responseCodePerTunnel,
|
|
serverLocations: serverLocations,
|
|
oldServerLocations: make(map[string]string),
|
|
muxerMetrics: newMuxerMetrics(),
|
|
tunnelsHA: NewTunnelsForHA(),
|
|
regSuccess: registerSuccess,
|
|
regFail: registerFail,
|
|
rpcFail: rpcFail,
|
|
userHostnamesCounts: userHostnamesCounts,
|
|
authSuccess: authSuccess,
|
|
authFail: authFail,
|
|
}
|
|
}
|
|
|
|
func (t *TunnelMetrics) incrementHaConnections() {
|
|
t.haConnections.Inc()
|
|
}
|
|
|
|
func (t *TunnelMetrics) decrementHaConnections() {
|
|
t.haConnections.Dec()
|
|
}
|
|
|
|
func (t *TunnelMetrics) updateMuxerMetrics(connectionID string, metrics *h2mux.MuxerMetrics) {
|
|
t.muxerMetrics.update(connectionID, metrics)
|
|
}
|
|
|
|
func (t *TunnelMetrics) incrementRequests(connectionID string) {
|
|
t.concurrentRequestsLock.Lock()
|
|
var concurrentRequests uint64
|
|
var ok bool
|
|
if concurrentRequests, ok = t.concurrentRequests[connectionID]; ok {
|
|
t.concurrentRequests[connectionID]++
|
|
concurrentRequests++
|
|
} else {
|
|
t.concurrentRequests[connectionID] = 1
|
|
concurrentRequests = 1
|
|
}
|
|
if maxConcurrentRequests, ok := t.maxConcurrentRequests[connectionID]; (ok && maxConcurrentRequests < concurrentRequests) || !ok {
|
|
t.maxConcurrentRequests[connectionID] = concurrentRequests
|
|
t.maxConcurrentRequestsPerTunnel.WithLabelValues(connectionID).Set(float64(concurrentRequests))
|
|
}
|
|
t.concurrentRequestsLock.Unlock()
|
|
|
|
t.totalRequests.Inc()
|
|
t.requestsPerTunnel.WithLabelValues(connectionID).Inc()
|
|
t.concurrentRequestsPerTunnel.WithLabelValues(connectionID).Inc()
|
|
}
|
|
|
|
func (t *TunnelMetrics) decrementConcurrentRequests(connectionID string) {
|
|
t.concurrentRequestsLock.Lock()
|
|
if _, ok := t.concurrentRequests[connectionID]; ok {
|
|
t.concurrentRequests[connectionID]--
|
|
}
|
|
t.concurrentRequestsLock.Unlock()
|
|
|
|
t.concurrentRequestsPerTunnel.WithLabelValues(connectionID).Dec()
|
|
}
|
|
|
|
func (t *TunnelMetrics) incrementResponses(connectionID, code string) {
|
|
t.responseByCode.WithLabelValues(code).Inc()
|
|
t.responseCodePerTunnel.WithLabelValues(connectionID, code).Inc()
|
|
|
|
}
|
|
|
|
func (t *TunnelMetrics) registerServerLocation(connectionID, loc string) {
|
|
t.locationLock.Lock()
|
|
defer t.locationLock.Unlock()
|
|
if oldLoc, ok := t.oldServerLocations[connectionID]; ok && oldLoc == loc {
|
|
return
|
|
} else if ok {
|
|
t.serverLocations.WithLabelValues(connectionID, oldLoc).Dec()
|
|
}
|
|
t.serverLocations.WithLabelValues(connectionID, loc).Inc()
|
|
t.oldServerLocations[connectionID] = loc
|
|
}
|