/**
 * 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 { Measurement , View } from '../stats/types' ; import { TagKey , TagValue } from '../tags/types' ; import * as configTypes from '../trace/config/types' ; import * as modelTypes from '../trace/model/types' ; /** Defines a trace exporter interface. */ export interface Exporter extends modelTypes . SpanEventListener { param spans publish ( spans ) : Promise < number | string | void > ; } /**
 * An interface that describes the possible events that will be emitted from a
 * Stats instance. Stats exporters should implement this interface.
 */ export interface StatsEventListener { deprecated since version 0.0.9 - use  start instead
     *  param view onRegisterView ( view ) : void ; deprecated since version 0.0.9 - use  start instead
     *  param views param measurement param tags onRecord ( views , measurement , tags ) : void ; /**
     * Starts the exporter that polls Metric from Metrics library and send
     * batched data to backend.
     */ start ( ) : void ; /** Stops the exporter. */ stop ( ) : void ; } export type ExporterConfig = configTypes . BufferConfig ;