opentelemetry-auto-instrume.../plugins/node/opentelemetry-instrumentation-http/test/utils/DummyPropagation.ts

52 lines
1.8 KiB
TypeScript

/*
* 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.
*/
import {
Context,
TextMapPropagator,
trace,
TraceFlags,
} from '@opentelemetry/api';
import type * as http from 'http';
export class DummyPropagation implements TextMapPropagator {
static TRACE_CONTEXT_KEY = 'x-dummy-trace-id';
static SPAN_CONTEXT_KEY = 'x-dummy-span-id';
extract(context: Context, carrier: http.OutgoingHttpHeaders) {
const extractedSpanContext = {
traceId: carrier[DummyPropagation.TRACE_CONTEXT_KEY] as string,
spanId: carrier[DummyPropagation.SPAN_CONTEXT_KEY] as string,
traceFlags: TraceFlags.SAMPLED,
isRemote: true,
};
if (extractedSpanContext.traceId && extractedSpanContext.spanId) {
return trace.setSpanContext(context, extractedSpanContext);
}
return context;
}
inject(context: Context, headers: { [custom: string]: string }): void {
const spanContext = trace.getSpanContext(context);
if (!spanContext) return;
headers[DummyPropagation.TRACE_CONTEXT_KEY] = spanContext.traceId;
headers[DummyPropagation.SPAN_CONTEXT_KEY] = spanContext.spanId;
}
fields(): string[] {
return [
DummyPropagation.TRACE_CONTEXT_KEY,
DummyPropagation.SPAN_CONTEXT_KEY,
];
}
}