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feat(p2p): metrics for Exchange (#125)
Includes: * headRequestTime * responseSize * responseTime * trackerPeersNum * disconnectedPeersNum
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| package p2p | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "sync/atomic" | ||
| "time" | ||
|
|
||
| "go.opentelemetry.io/otel" | ||
| "go.opentelemetry.io/otel/attribute" | ||
| "go.opentelemetry.io/otel/metric" | ||
| ) | ||
|
|
||
| var meter = otel.Meter("header/p2p") | ||
|
|
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| const ( | ||
| failedKey = "failed" | ||
| headerReceivedKey = "num_headers_received" | ||
| headTypeKey = "request_type" | ||
| headTypeTrusted = "trusted_request" | ||
| headTypeUntrusted = "untrusted_request" | ||
| headStatusKey = "status" | ||
| headStatusOk = "ok" | ||
| headStatusTimeout = "timeout" | ||
| headStatusCanceled = "canceled" | ||
| headStatusNoHeaders = "no_headers" | ||
| ) | ||
|
|
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| type exchangeMetrics struct { | ||
| headRequestTimeInst metric.Float64Histogram | ||
| responseSizeInst metric.Int64Histogram | ||
| responseTimeInst metric.Float64Histogram | ||
|
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| trackerPeersNum atomic.Int64 | ||
| trackedPeersNumInst metric.Int64ObservableGauge | ||
| trackedPeersNumReg metric.Registration | ||
|
|
||
| disconnectedPeersNum atomic.Int64 | ||
| disconnectedPeersNumInst metric.Int64ObservableGauge | ||
| disconnectedPeersNumReg metric.Registration | ||
|
|
||
| blockedPeersNum atomic.Int64 | ||
| blockedPeersNumInst metric.Int64ObservableGauge | ||
| blockedPeersNumReg metric.Registration | ||
| } | ||
|
|
||
| func newExchangeMetrics() (m *exchangeMetrics, err error) { | ||
| m = new(exchangeMetrics) | ||
| m.headRequestTimeInst, err = meter.Float64Histogram( | ||
| "hdr_p2p_exch_clnt_head_time_hist", | ||
| metric.WithDescription("exchange client head request time in seconds"), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.responseSizeInst, err = meter.Int64Histogram( | ||
| "hdr_p2p_exch_clnt_resp_size_hist", | ||
| metric.WithDescription("exchange client header response size in bytes"), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.responseTimeInst, err = meter.Float64Histogram( | ||
| "hdr_p2p_exch_clnt_resp_time_hist", | ||
| metric.WithDescription("exchange client response time in seconds"), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.trackedPeersNumInst, err = meter.Int64ObservableGauge( | ||
| "hdr_p2p_exch_clnt_trck_peer_num_gauge", | ||
| metric.WithDescription("exchange client tracked peers number"), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.trackedPeersNumReg, err = meter.RegisterCallback(m.observeTrackedPeers, m.trackedPeersNumInst) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.disconnectedPeersNumInst, err = meter.Int64ObservableGauge( | ||
| "hdr_p2p_exch_clnt_disconn_peer_num_gauge", | ||
| metric.WithDescription("exchange client tracked disconnected peers number"), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.disconnectedPeersNumReg, err = meter.RegisterCallback(m.observeDisconnectedPeers, m.disconnectedPeersNumInst) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.blockedPeersNumInst, err = meter.Int64ObservableGauge( | ||
| "hdr_p2p_exch_clnt_block_peer_num_gauge", | ||
| metric.WithDescription("exchange client blocked peers number"), | ||
| ) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| m.blockedPeersNumReg, err = meter.RegisterCallback(m.observeBlockedPeers, m.blockedPeersNumInst) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return m, nil | ||
| } | ||
|
|
||
| func (m *exchangeMetrics) head(ctx context.Context, duration time.Duration, headersReceived int, tp, status string) { | ||
| m.observe(ctx, func(ctx context.Context) { | ||
| m.headRequestTimeInst.Record(ctx, | ||
| duration.Seconds(), | ||
| metric.WithAttributes( | ||
| attribute.Int(headerReceivedKey, headersReceived), | ||
| attribute.String(headTypeKey, tp), | ||
| attribute.String(headStatusKey, status), | ||
| ), | ||
| ) | ||
| }) | ||
| } | ||
|
|
||
| func (m *exchangeMetrics) response(ctx context.Context, size uint64, duration time.Duration, err error) { | ||
| m.observe(ctx, func(ctx context.Context) { | ||
| m.responseSizeInst.Record(ctx, | ||
| int64(size), | ||
| metric.WithAttributes(attribute.Bool(failedKey, err != nil)), | ||
| ) | ||
| m.responseTimeInst.Record(ctx, | ||
| duration.Seconds(), | ||
| metric.WithAttributes(attribute.Bool(failedKey, err != nil)), | ||
| ) | ||
| }) | ||
| } | ||
|
|
||
| func (m *exchangeMetrics) peersTracked(num int) { | ||
| m.observe(context.Background(), func(context.Context) { | ||
| m.trackerPeersNum.Add(int64(num)) | ||
| }) | ||
| } | ||
|
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| func (m *exchangeMetrics) peersDisconnected(num int) { | ||
| m.observe(context.Background(), func(context.Context) { | ||
| m.disconnectedPeersNum.Add(int64(num)) | ||
| }) | ||
| } | ||
|
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| func (m *exchangeMetrics) peerBlocked() { | ||
| m.observe(context.Background(), func(ctx context.Context) { | ||
| m.blockedPeersNum.Add(1) | ||
| }) | ||
| } | ||
|
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| func (m *exchangeMetrics) observeTrackedPeers(_ context.Context, obs metric.Observer) error { | ||
| obs.ObserveInt64(m.trackedPeersNumInst, m.trackerPeersNum.Load()) | ||
| return nil | ||
| } | ||
|
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| func (m *exchangeMetrics) observeDisconnectedPeers(_ context.Context, obs metric.Observer) error { | ||
| obs.ObserveInt64(m.disconnectedPeersNumInst, m.disconnectedPeersNum.Load()) | ||
| return nil | ||
| } | ||
|
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| func (m *exchangeMetrics) observeBlockedPeers(_ context.Context, obs metric.Observer) error { | ||
| obs.ObserveInt64(m.blockedPeersNumInst, m.blockedPeersNum.Load()) | ||
| return nil | ||
| } | ||
|
|
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| func (m *exchangeMetrics) observe(ctx context.Context, observeFn func(context.Context)) { | ||
| if m == nil { | ||
| return | ||
| } | ||
| if ctx.Err() != nil { | ||
| ctx = context.Background() | ||
| } | ||
|
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| observeFn(ctx) | ||
| } | ||
|
|
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| func (m *exchangeMetrics) Close() (err error) { | ||
| if m == nil { | ||
| return nil | ||
| } | ||
|
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| err = errors.Join(err, m.trackedPeersNumReg.Unregister()) | ||
| err = errors.Join(err, m.disconnectedPeersNumReg.Unregister()) | ||
| return err | ||
| } |
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