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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package metrics | ||
|
|
||
| import ( | ||
| "github.com/mysteriumnetwork/openvpn-forwarder/proxy" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "time" | ||
| ) | ||
|
|
||
| var _ proxy.Listener = (*Service)(nil) | ||
|
|
||
| type Service struct { | ||
| proxyRequestDuration *prometheus.HistogramVec | ||
| proxyRequestData *prometheus.CounterVec | ||
| proxyNumberOfLiveConnecions *prometheus.GaugeVec | ||
| proxyNumberOfIncommingConnections *prometheus.CounterVec | ||
| proxyNumberOfProcessedConnections *prometheus.CounterVec | ||
| } | ||
|
|
||
| func NewMetricsService() (*Service, error) { | ||
| proxyRequestDuration := prometheus.NewHistogramVec(prometheus.HistogramOpts{ | ||
| Name: "proxy_request_duration", | ||
| Help: "Proxy request duration in seconds", | ||
| }, []string{"request_type"}) | ||
|
|
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| if err := prometheus.Register(proxyRequestDuration); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| proxyRequestData := prometheus.NewCounterVec(prometheus.CounterOpts{ | ||
| Name: "proxy_request_data", | ||
| Help: "Proxy request data in bytes", | ||
| }, []string{"request_type", "direction"}) | ||
|
|
||
| if err := prometheus.Register(proxyRequestData); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| proxyNumberOfLiveConnections := prometheus.NewGaugeVec(prometheus.GaugeOpts{ | ||
| Name: "proxy_number_of_live_connections", | ||
| Help: "Number of currently live connections", | ||
| }, []string{"request_type"}) | ||
|
|
||
| if err := prometheus.Register(proxyNumberOfLiveConnections); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| proxyNumberOfIncommingConnections := prometheus.NewCounterVec(prometheus.CounterOpts{ | ||
| Name: "proxy_number_of_incomming_connections", | ||
| Help: "Number of incomming connections (failed and successful)", | ||
| }, []string{}) | ||
|
|
||
| if err := prometheus.Register(proxyNumberOfIncommingConnections); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| proxyNumberOfProcessedConnections := prometheus.NewCounterVec(prometheus.CounterOpts{ | ||
| Name: "proxy_number_of_processed_connections", | ||
| Help: "Number of incmming connections which were succesfully assigned and processed", | ||
| }, []string{"request_type"}) | ||
|
|
||
| if err := prometheus.Register(proxyNumberOfProcessedConnections); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &Service{ | ||
| proxyRequestDuration: proxyRequestDuration, | ||
| proxyRequestData: proxyRequestData, | ||
| proxyNumberOfLiveConnecions: proxyNumberOfLiveConnections, | ||
| proxyNumberOfIncommingConnections: proxyNumberOfIncommingConnections, | ||
| proxyNumberOfProcessedConnections: proxyNumberOfProcessedConnections, | ||
| }, nil | ||
| } | ||
|
|
||
| func (s *Service) ProxyHandlerMiddleware(next func(c *proxy.Context), proxyHandlerType string) func(c *proxy.Context) { | ||
| return func(c *proxy.Context) { | ||
| startTime := time.Now() | ||
|
|
||
| s.proxyNumberOfLiveConnecions.With(prometheus.Labels{ | ||
| "request_type": proxyHandlerType, | ||
| }).Inc() | ||
|
|
||
| next(c) | ||
|
|
||
| s.proxyNumberOfLiveConnecions.With(prometheus.Labels{ | ||
| "request_type": proxyHandlerType, | ||
| }).Dec() | ||
|
|
||
| s.proxyRequestDuration.With(prometheus.Labels{ | ||
| "request_type": proxyHandlerType, | ||
| }).Observe(time.Since(startTime).Seconds()) | ||
|
|
||
| s.proxyRequestData.With(prometheus.Labels{ | ||
| "request_type": proxyHandlerType, | ||
| "direction": "sent", | ||
| }).Add(float64(c.BytesSent())) | ||
|
|
||
| s.proxyRequestData.With(prometheus.Labels{ | ||
| "request_type": proxyHandlerType, | ||
| "direction": "received", | ||
| }).Add(float64(c.BytesReceived())) | ||
|
|
||
| s.proxyNumberOfProcessedConnections.With(prometheus.Labels{ | ||
| "request_type": proxyHandlerType, | ||
| }).Inc() | ||
| } | ||
| } | ||
|
|
||
| func (s *Service) OnProxyConnectionAccept() { | ||
| s.proxyNumberOfIncommingConnections.With(prometheus.Labels{}).Inc() | ||
| } |
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