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fixes #384
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // Copyright (C) 2023, Ava Labs, Inc. All rights reserved. | ||
| // See the file LICENSE for licensing terms. | ||
|
|
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| package metrics | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "log" | ||
| "net/http" | ||
|
|
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| "github.com/ava-labs/avalanchego/api/metrics" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/client_golang/prometheus/promhttp" | ||
| ) | ||
|
|
||
| var ( | ||
| ErrFailedToCreateSignatureAggregatorMetrics = errors.New( | ||
| "failed to create signature aggregator metrics", | ||
| ) | ||
| ) | ||
|
|
||
| var Opts = struct { | ||
| AggregateSignaturesLatencyMS prometheus.GaugeOpts | ||
| AggregateSignaturesRequestCount prometheus.CounterOpts | ||
| ValidatorFailures prometheus.CounterOpts | ||
| }{ | ||
| AggregateSignaturesLatencyMS: prometheus.GaugeOpts{ | ||
| Name: "agg_sigs_latency_ms", | ||
| Help: "Latency of requests for aggregate signatures", | ||
| }, | ||
| AggregateSignaturesRequestCount: prometheus.CounterOpts{ | ||
| Name: "agg_sigs_req_count", | ||
| Help: "Number of requests for aggregate signatures", | ||
| }, | ||
| ValidatorFailures: prometheus.CounterOpts{ | ||
| Name: "validator_failures", | ||
| Help: "Number of failed requests to validator nodes", | ||
| }, | ||
| } | ||
|
|
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| type SignatureAggregatorMetrics struct { | ||
| AggregateSignaturesLatencyMS prometheus.Gauge | ||
| AggregateSignaturesRequestCount prometheus.Counter | ||
| ValidatorFailures prometheus.Counter | ||
|
|
||
| // TODO: consider other failures to monitor. Issue #384 requires | ||
| // "network failures", but we probably don't handle those directly. | ||
| // Surely there are some error types specific to this layer that we can | ||
| // count. | ||
|
|
||
| // TODO: consider how the relayer keeps separate counts of aggregations | ||
| // by AppRequest vs by Warp API and whether we should have such counts. | ||
| } | ||
|
|
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| func NewSignatureAggregatorMetrics( | ||
| registerer prometheus.Registerer, | ||
| ) *SignatureAggregatorMetrics { | ||
| m := SignatureAggregatorMetrics{ | ||
| AggregateSignaturesLatencyMS: prometheus.NewGauge( | ||
| Opts.AggregateSignaturesLatencyMS, | ||
| ), | ||
| AggregateSignaturesRequestCount: prometheus.NewCounter( | ||
| Opts.AggregateSignaturesRequestCount, | ||
| ), | ||
| ValidatorFailures: prometheus.NewCounter( | ||
| Opts.ValidatorFailures, | ||
| ), | ||
| } | ||
|
|
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| registerer.MustRegister(m.AggregateSignaturesLatencyMS) | ||
| registerer.MustRegister(m.AggregateSignaturesRequestCount) | ||
| registerer.MustRegister(m.ValidatorFailures) | ||
|
|
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| return &m | ||
| } | ||
|
|
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| func (m *SignatureAggregatorMetrics) HandleMetricsRequest( | ||
| gatherer metrics.MultiGatherer, | ||
| ) { | ||
| http.Handle( | ||
| "/metrics", | ||
| promhttp.HandlerFor(gatherer, promhttp.HandlerOpts{}), | ||
| ) | ||
| } | ||
|
|
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| func Initialize(port uint16) *prometheus.Registry { | ||
| gatherer := metrics.NewPrefixGatherer() | ||
| registry := prometheus.NewRegistry() | ||
| err := gatherer.Register("signature-aggregator", registry) | ||
| if err != nil { | ||
| panic( | ||
| fmt.Errorf( | ||
| "failed to register metrics gatherer: %w", | ||
| err, | ||
| ), | ||
| ) | ||
| } | ||
|
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| http.Handle( | ||
| "/metrics", | ||
| promhttp.HandlerFor(gatherer, promhttp.HandlerOpts{}), | ||
| ) | ||
|
|
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| go func() { | ||
| log.Fatalln(http.ListenAndServe(fmt.Sprintf(":%d", port), nil)) | ||
| }() | ||
|
|
||
| return registry | ||
| } |
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