Current File : //usr/lib/node_modules/pm2/node_modules/@opencensus/propagation-b3/build/src/b3-format.d.ts
/**
* Copyright 2018, OpenCensus 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
*
* http://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 { HeaderGetter, HeaderSetter, Propagation, SpanContext } from '@opencensus/core';
/** Propagates span context through B3 Format propagation. */
export declare class B3Format implements Propagation {
/**
* Gets the trace context from a request headers. If there is no trace context
* in the headers, null is returned.
* @param getter
*/
extract(getter: HeaderGetter): SpanContext;
/**
* Adds a trace context in a request headers.
* @param setter
* @param spanContext
*/
inject(setter: HeaderSetter, spanContext: SpanContext): void;
/**
* Generate SpanContexts
*/
generate(): SpanContext;
}
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