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| 1 | +import Foundation.NSDate |
| 2 | +import UIKit.UIApplication |
| 3 | +import ObserveAPI |
| 4 | +import OpenTelemetryApi |
| 5 | +import OpenTelemetrySdk |
| 6 | +import ResourceExtension |
| 7 | +@_exported import Instrumentation |
| 8 | + |
| 9 | +import Combine |
| 10 | + |
| 11 | +public final class ObservabilityClient: @unchecked Sendable, Observe { |
| 12 | + private let tracerFacade: TracerFacade |
| 13 | + private let loggerFacade: LoggerFacade |
| 14 | + private let meterFacade: MeterFacade |
| 15 | + private var session: Session |
| 16 | + |
| 17 | + private var cachedSpans = [String: Span]() |
| 18 | + private var cancellables = Set<AnyCancellable>() |
| 19 | + |
| 20 | + private var onWillEndSession: @Sendable (_ sessionId: String) -> Void { |
| 21 | + { [weak self] sessionId in |
| 22 | + self?.willEndSession(sessionId) |
| 23 | + } |
| 24 | + } |
| 25 | + private var onDidStartSession: @Sendable (_ sessionId: String) -> Void { |
| 26 | + { [weak self] sessionId in |
| 27 | + self?.didStartSession(sessionId) |
| 28 | + } |
| 29 | + } |
| 30 | + |
| 31 | + public init(configuration: Configuration = .init(), sdkKey: String = "") { |
| 32 | + self.tracerFacade = TracerFacade(configuration: configuration) |
| 33 | + self.loggerFacade = LoggerFacade(configuration: configuration) |
| 34 | + self.meterFacade = MeterFacade(configuration: configuration) |
| 35 | + self.session = Session(options: SessionOptions(timeout: configuration.sessionTimeout)) |
| 36 | + self.registerPropagators() |
| 37 | + |
| 38 | + |
| 39 | + self.session.start( |
| 40 | + onWillEndSession: onWillEndSession, |
| 41 | + onDidStartSession: onDidStartSession |
| 42 | + ) |
| 43 | + } |
| 44 | + |
| 45 | + private func didStartSession(_ id: String) { |
| 46 | + let span = spanBuilder(spanName: "app.session.started") |
| 47 | + .setSpanKind(spanKind: .client) |
| 48 | + .startSpan() |
| 49 | + cachedSpans[id] = span |
| 50 | + } |
| 51 | + |
| 52 | + private func willEndSession(_ id: String) { |
| 53 | + guard let span = cachedSpans[id] else { return } |
| 54 | + span.end() |
| 55 | + } |
| 56 | + |
| 57 | + private func registerPropagators() { |
| 58 | + OpenTelemetry.registerPropagators( |
| 59 | + textPropagators: [ |
| 60 | + W3CTraceContextPropagator(), |
| 61 | + B3Propagator(), |
| 62 | + JaegerPropagator(), |
| 63 | + ], |
| 64 | + baggagePropagator: W3CBaggagePropagator() |
| 65 | + ) |
| 66 | + } |
| 67 | + |
| 68 | + // MARK: - Public API |
| 69 | + |
| 70 | + public static func defaultResource() -> Resource { |
| 71 | + DefaultResources().get() |
| 72 | + } |
| 73 | + |
| 74 | + public func spanBuilder(spanName: String) -> SpanBuilder { |
| 75 | + tracerFacade.spanBuilder(spanName: spanName) |
| 76 | + } |
| 77 | + |
| 78 | + |
| 79 | + public func spanBuilder(spanName: String, attributes: [String: AttributeValue]) -> Span { |
| 80 | + let builder = tracerFacade |
| 81 | + .spanBuilder(spanName: spanName) |
| 82 | + |
| 83 | + attributes.forEach { |
| 84 | + builder.setAttribute(key: $0.key, value: $0.value) |
| 85 | + } |
| 86 | + |
| 87 | + return builder.startSpan() |
| 88 | + } |
| 89 | + |
| 90 | + |
| 91 | + public func recordMetric(metric: ObserveAPI.Metric) { |
| 92 | + var gauge = meterFacade.meter |
| 93 | + .gaugeBuilder(name: metric.name) |
| 94 | + .build() |
| 95 | + gauge.record(value: metric.value, attributes: metric.attributes) |
| 96 | + } |
| 97 | + |
| 98 | + public func recordCount(metric: ObserveAPI.Metric) { |
| 99 | + var counter = meterFacade.meter.counterBuilder(name: metric.name).ofDoubles().build() |
| 100 | + counter.add(value: metric.value, attributes: metric.attributes) |
| 101 | + } |
| 102 | + |
| 103 | + public func recordIncr(metric: ObserveAPI.Metric) { |
| 104 | + var counter = meterFacade.meter.counterBuilder(name: metric.name).build() |
| 105 | + counter.add(value: 1, attributes: metric.attributes) |
| 106 | + } |
| 107 | + |
| 108 | + public func recordHistogram(metric: ObserveAPI.Metric) { |
| 109 | + var histogram = meterFacade.meter.histogramBuilder(name: metric.name).build() |
| 110 | + histogram.record(value: metric.value, attributes: metric.attributes) |
| 111 | + } |
| 112 | + |
| 113 | + public func recordUpDownCounter(metric: ObserveAPI.Metric) { |
| 114 | + var upDownCounter = meterFacade.meter.upDownCounterBuilder(name: metric.name).ofDoubles().build() |
| 115 | + upDownCounter.add(value: metric.value, attributes: metric.attributes) |
| 116 | + } |
| 117 | + |
| 118 | + public func recordError(error: any Error, attributes: [String : OpenTelemetryApi.AttributeValue]) { |
| 119 | + let builder = tracerFacade.tracer.spanBuilder(spanName: "highlight.error") |
| 120 | + |
| 121 | + if let parent = tracerFacade.currentSpan { |
| 122 | + builder.setParent(parent) |
| 123 | + } |
| 124 | + |
| 125 | + attributes.forEach { |
| 126 | + builder.setAttribute(key: $0.key, value: $0.value) |
| 127 | + } |
| 128 | + |
| 129 | + let span = builder.startSpan() |
| 130 | + span.recordException(ErrorSpanException(error: error), attributes: attributes) |
| 131 | + span.end() |
| 132 | + } |
| 133 | + |
| 134 | + public func recordLog(message: String, severity: Severity, attributes: [String : OpenTelemetryApi.AttributeValue]) { |
| 135 | + loggerFacade.logger.logRecordBuilder() |
| 136 | + .setBody(.string(message)) |
| 137 | + .setTimestamp(.now) |
| 138 | + .setSeverity(severity) |
| 139 | + .setAttributes(attributes) |
| 140 | + .emit() |
| 141 | + } |
| 142 | + |
| 143 | + public func startSpan(name: String, attributes: [String : OpenTelemetryApi.AttributeValue]) -> any OpenTelemetryApi.Span { |
| 144 | + let builder = tracerFacade |
| 145 | + .spanBuilder(spanName: name) |
| 146 | + |
| 147 | + if let parent = tracerFacade.currentSpan { |
| 148 | + builder.setParent(parent) |
| 149 | + } |
| 150 | + |
| 151 | + attributes.forEach { |
| 152 | + builder.setAttribute(key: $0.key, value: $0.value) |
| 153 | + } |
| 154 | + |
| 155 | + return builder.startSpan() |
| 156 | + } |
| 157 | +} |
| 158 | + |
| 159 | +struct ErrorSpanException: SpanException { |
| 160 | + private let error: Error |
| 161 | + var type: String { |
| 162 | + String(describing: error) |
| 163 | + } |
| 164 | + |
| 165 | + var message: String? { |
| 166 | + String(describing: error) |
| 167 | + } |
| 168 | + |
| 169 | + var stackTrace: [String]? { |
| 170 | + Thread.callStackSymbols |
| 171 | + } |
| 172 | + |
| 173 | + init(error: Error) { |
| 174 | + self.error = error |
| 175 | + } |
| 176 | +} |
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