@opentelemetry/api
Version:
Public API for OpenTelemetry
75 lines • 2.82 kB
JavaScript
;
/*
* Copyright The OpenTelemetry Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.NoopTracer = void 0;
const context_1 = require("../api/context");
const context_utils_1 = require("../trace/context-utils");
const NonRecordingSpan_1 = require("./NonRecordingSpan");
const spancontext_utils_1 = require("./spancontext-utils");
const contextApi = context_1.ContextAPI.getInstance();
/**
* No-op implementations of {@link Tracer}.
*/
class NoopTracer {
// startSpan starts a noop span.
startSpan(name, options, context = contextApi.active()) {
const root = Boolean(options === null || options === void 0 ? void 0 : options.root);
if (root) {
return new NonRecordingSpan_1.NonRecordingSpan();
}
const parentFromContext = context && (0, context_utils_1.getSpanContext)(context);
if (isSpanContext(parentFromContext) &&
(0, spancontext_utils_1.isSpanContextValid)(parentFromContext)) {
return new NonRecordingSpan_1.NonRecordingSpan(parentFromContext);
}
else {
return new NonRecordingSpan_1.NonRecordingSpan();
}
}
startActiveSpan(name, arg2, arg3, arg4) {
let opts;
let ctx;
let fn;
if (arguments.length < 2) {
return;
}
else if (arguments.length === 2) {
fn = arg2;
}
else if (arguments.length === 3) {
opts = arg2;
fn = arg3;
}
else {
opts = arg2;
ctx = arg3;
fn = arg4;
}
const parentContext = ctx !== null && ctx !== void 0 ? ctx : contextApi.active();
const span = this.startSpan(name, opts, parentContext);
const contextWithSpanSet = (0, context_utils_1.setSpan)(parentContext, span);
return contextApi.with(contextWithSpanSet, fn, undefined, span);
}
}
exports.NoopTracer = NoopTracer;
function isSpanContext(spanContext) {
return (typeof spanContext === 'object' &&
typeof spanContext['spanId'] === 'string' &&
typeof spanContext['traceId'] === 'string' &&
typeof spanContext['traceFlags'] === 'number');
}
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