64 lines
2.1 KiB
JavaScript
64 lines
2.1 KiB
JavaScript
/*
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* Copyright The OpenTelemetry Authors
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* SPDX-License-Identifier: Apache-2.0
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*/
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import { ContextAPI } from '../api/context';
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import { getSpanContext, setSpan } from '../trace/context-utils';
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import { NonRecordingSpan } from './NonRecordingSpan';
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import { isSpanContextValid } from './spancontext-utils';
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const contextApi = ContextAPI.getInstance();
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/**
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* No-op implementations of {@link Tracer}.
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*/
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export class NoopTracer {
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// startSpan starts a noop span.
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startSpan(name, options, context = contextApi.active()) {
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const root = Boolean(options === null || options === void 0 ? void 0 : options.root);
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if (root) {
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return new NonRecordingSpan();
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}
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const parentFromContext = context && getSpanContext(context);
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if (isSpanContext(parentFromContext) &&
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isSpanContextValid(parentFromContext)) {
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return new NonRecordingSpan(parentFromContext);
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}
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else {
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return new NonRecordingSpan();
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}
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}
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startActiveSpan(name, arg2, arg3, arg4) {
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let opts;
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let ctx;
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let fn;
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if (arguments.length < 2) {
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return;
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}
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else if (arguments.length === 2) {
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fn = arg2;
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}
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else if (arguments.length === 3) {
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opts = arg2;
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fn = arg3;
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}
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else {
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opts = arg2;
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ctx = arg3;
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fn = arg4;
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}
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const parentContext = ctx !== null && ctx !== void 0 ? ctx : contextApi.active();
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const span = this.startSpan(name, opts, parentContext);
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const contextWithSpanSet = setSpan(parentContext, span);
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return contextApi.with(contextWithSpanSet, fn, undefined, span);
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}
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}
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function isSpanContext(spanContext) {
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return (spanContext !== null &&
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typeof spanContext === 'object' &&
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'spanId' in spanContext &&
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typeof spanContext['spanId'] === 'string' &&
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'traceId' in spanContext &&
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typeof spanContext['traceId'] === 'string' &&
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'traceFlags' in spanContext &&
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typeof spanContext['traceFlags'] === 'number');
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}
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//# sourceMappingURL=NoopTracer.js.map
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