|
| 1 | +package p2p |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "errors" |
| 6 | + "sync/atomic" |
| 7 | + "time" |
| 8 | + |
| 9 | + "go.opentelemetry.io/otel" |
| 10 | + "go.opentelemetry.io/otel/attribute" |
| 11 | + "go.opentelemetry.io/otel/metric" |
| 12 | +) |
| 13 | + |
| 14 | +var meter = otel.Meter("header/p2p") |
| 15 | + |
| 16 | +const ( |
| 17 | + failedKey = "failed" |
| 18 | + headerReceivedKey = "num_headers_received" |
| 19 | + headTypeKey = "request_type" |
| 20 | + headTypeTrusted = "trusted_request" |
| 21 | + headTypeUntrusted = "untrusted_request" |
| 22 | + headStatusKey = "status" |
| 23 | + headStatusOk = "ok" |
| 24 | + headStatusTimeout = "timeout" |
| 25 | + headStatusCanceled = "canceled" |
| 26 | + headStatusNoHeaders = "no_headers" |
| 27 | +) |
| 28 | + |
| 29 | +type exchangeMetrics struct { |
| 30 | + headRequestTimeInst metric.Float64Histogram |
| 31 | + responseSizeInst metric.Int64Histogram |
| 32 | + responseTimeInst metric.Float64Histogram |
| 33 | + |
| 34 | + trackerPeersNum atomic.Int64 |
| 35 | + trackedPeersNumInst metric.Int64ObservableGauge |
| 36 | + trackedPeersNumReg metric.Registration |
| 37 | + |
| 38 | + disconnectedPeersNum atomic.Int64 |
| 39 | + disconnectedPeersNumInst metric.Int64ObservableGauge |
| 40 | + disconnectedPeersNumReg metric.Registration |
| 41 | + |
| 42 | + blockedPeersNum atomic.Int64 |
| 43 | + blockedPeersNumInst metric.Int64ObservableGauge |
| 44 | + blockedPeersNumReg metric.Registration |
| 45 | +} |
| 46 | + |
| 47 | +func newExchangeMetrics() (m *exchangeMetrics, err error) { |
| 48 | + m = new(exchangeMetrics) |
| 49 | + m.headRequestTimeInst, err = meter.Float64Histogram( |
| 50 | + "hdr_p2p_exch_clnt_head_time_hist", |
| 51 | + metric.WithDescription("exchange client head request time in seconds"), |
| 52 | + ) |
| 53 | + if err != nil { |
| 54 | + return nil, err |
| 55 | + } |
| 56 | + m.responseSizeInst, err = meter.Int64Histogram( |
| 57 | + "hdr_p2p_exch_clnt_resp_size_hist", |
| 58 | + metric.WithDescription("exchange client header response size in bytes"), |
| 59 | + ) |
| 60 | + if err != nil { |
| 61 | + return nil, err |
| 62 | + } |
| 63 | + m.responseTimeInst, err = meter.Float64Histogram( |
| 64 | + "hdr_p2p_exch_clnt_resp_time_hist", |
| 65 | + metric.WithDescription("exchange client response time in seconds"), |
| 66 | + ) |
| 67 | + if err != nil { |
| 68 | + return nil, err |
| 69 | + } |
| 70 | + m.trackedPeersNumInst, err = meter.Int64ObservableGauge( |
| 71 | + "hdr_p2p_exch_clnt_trck_peer_num_gauge", |
| 72 | + metric.WithDescription("exchange client tracked peers number"), |
| 73 | + ) |
| 74 | + if err != nil { |
| 75 | + return nil, err |
| 76 | + } |
| 77 | + m.trackedPeersNumReg, err = meter.RegisterCallback(m.observeTrackedPeers, m.trackedPeersNumInst) |
| 78 | + if err != nil { |
| 79 | + return nil, err |
| 80 | + } |
| 81 | + m.disconnectedPeersNumInst, err = meter.Int64ObservableGauge( |
| 82 | + "hdr_p2p_exch_clnt_disconn_peer_num_gauge", |
| 83 | + metric.WithDescription("exchange client tracked disconnected peers number"), |
| 84 | + ) |
| 85 | + if err != nil { |
| 86 | + return nil, err |
| 87 | + } |
| 88 | + m.disconnectedPeersNumReg, err = meter.RegisterCallback(m.observeDisconnectedPeers, m.disconnectedPeersNumInst) |
| 89 | + if err != nil { |
| 90 | + return nil, err |
| 91 | + } |
| 92 | + m.blockedPeersNumInst, err = meter.Int64ObservableGauge( |
| 93 | + "hdr_p2p_exch_clnt_block_peer_num_gauge", |
| 94 | + metric.WithDescription("exchange client blocked peers number"), |
| 95 | + ) |
| 96 | + if err != nil { |
| 97 | + return nil, err |
| 98 | + } |
| 99 | + m.blockedPeersNumReg, err = meter.RegisterCallback(m.observeBlockedPeers, m.blockedPeersNumInst) |
| 100 | + if err != nil { |
| 101 | + return nil, err |
| 102 | + } |
| 103 | + return m, nil |
| 104 | +} |
| 105 | + |
| 106 | +func (m *exchangeMetrics) head(ctx context.Context, duration time.Duration, headersReceived int, tp, status string) { |
| 107 | + m.observe(ctx, func(ctx context.Context) { |
| 108 | + m.headRequestTimeInst.Record(ctx, |
| 109 | + duration.Seconds(), |
| 110 | + metric.WithAttributes( |
| 111 | + attribute.Int(headerReceivedKey, headersReceived), |
| 112 | + attribute.String(headTypeKey, tp), |
| 113 | + attribute.String(headStatusKey, status), |
| 114 | + ), |
| 115 | + ) |
| 116 | + }) |
| 117 | +} |
| 118 | + |
| 119 | +func (m *exchangeMetrics) response(ctx context.Context, size uint64, duration time.Duration, err error) { |
| 120 | + m.observe(ctx, func(ctx context.Context) { |
| 121 | + m.responseSizeInst.Record(ctx, |
| 122 | + int64(size), |
| 123 | + metric.WithAttributes(attribute.Bool(failedKey, err != nil)), |
| 124 | + ) |
| 125 | + m.responseTimeInst.Record(ctx, |
| 126 | + duration.Seconds(), |
| 127 | + metric.WithAttributes(attribute.Bool(failedKey, err != nil)), |
| 128 | + ) |
| 129 | + }) |
| 130 | +} |
| 131 | + |
| 132 | +func (m *exchangeMetrics) peersTracked(num int) { |
| 133 | + m.observe(context.Background(), func(context.Context) { |
| 134 | + m.trackerPeersNum.Add(int64(num)) |
| 135 | + }) |
| 136 | +} |
| 137 | + |
| 138 | +func (m *exchangeMetrics) peersDisconnected(num int) { |
| 139 | + m.observe(context.Background(), func(context.Context) { |
| 140 | + m.disconnectedPeersNum.Add(int64(num)) |
| 141 | + }) |
| 142 | +} |
| 143 | + |
| 144 | +func (m *exchangeMetrics) peerBlocked() { |
| 145 | + m.observe(context.Background(), func(ctx context.Context) { |
| 146 | + m.blockedPeersNum.Add(1) |
| 147 | + }) |
| 148 | +} |
| 149 | + |
| 150 | +func (m *exchangeMetrics) observeTrackedPeers(_ context.Context, obs metric.Observer) error { |
| 151 | + obs.ObserveInt64(m.trackedPeersNumInst, m.trackerPeersNum.Load()) |
| 152 | + return nil |
| 153 | +} |
| 154 | + |
| 155 | +func (m *exchangeMetrics) observeDisconnectedPeers(_ context.Context, obs metric.Observer) error { |
| 156 | + obs.ObserveInt64(m.disconnectedPeersNumInst, m.disconnectedPeersNum.Load()) |
| 157 | + return nil |
| 158 | +} |
| 159 | + |
| 160 | +func (m *exchangeMetrics) observeBlockedPeers(_ context.Context, obs metric.Observer) error { |
| 161 | + obs.ObserveInt64(m.blockedPeersNumInst, m.blockedPeersNum.Load()) |
| 162 | + return nil |
| 163 | +} |
| 164 | + |
| 165 | +func (m *exchangeMetrics) observe(ctx context.Context, observeFn func(context.Context)) { |
| 166 | + if m == nil { |
| 167 | + return |
| 168 | + } |
| 169 | + if ctx.Err() != nil { |
| 170 | + ctx = context.Background() |
| 171 | + } |
| 172 | + |
| 173 | + observeFn(ctx) |
| 174 | +} |
| 175 | + |
| 176 | +func (m *exchangeMetrics) Close() (err error) { |
| 177 | + if m == nil { |
| 178 | + return nil |
| 179 | + } |
| 180 | + |
| 181 | + err = errors.Join(err, m.trackedPeersNumReg.Unregister()) |
| 182 | + err = errors.Join(err, m.disconnectedPeersNumReg.Unregister()) |
| 183 | + return err |
| 184 | +} |
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