/
OTLPExporterNodeBase.ts
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/
OTLPExporterNodeBase.ts
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/*
* 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 type * as http from 'http';
import type * as https from 'https';
import { OTLPExporterBase } from '../../OTLPExporterBase';
import { OTLPExporterNodeConfigBase, CompressionAlgorithm } from './types';
import * as otlpTypes from '../../types';
import { parseHeaders } from '../../util';
import { createHttpAgent, sendWithHttp } from './util';
import { diag } from '@opentelemetry/api';
import { getEnv, baggageUtils } from '@opentelemetry/core';
/**
* Collector Metric Exporter abstract base class
*/
export abstract class OTLPExporterNodeBase<
ExportItem,
ServiceRequest
> extends OTLPExporterBase<
OTLPExporterNodeConfigBase,
ExportItem,
ServiceRequest
> {
DEFAULT_HEADERS: Record<string, string> = {};
headers: Record<string, string>;
agent: http.Agent | https.Agent | undefined;
compression: CompressionAlgorithm;
constructor(config: OTLPExporterNodeConfigBase = {}) {
super(config);
// eslint-disable-next-line @typescript-eslint/no-explicit-any
if ((config as any).metadata) {
diag.warn('Metadata cannot be set when using http');
}
this.headers = Object.assign(
this.DEFAULT_HEADERS,
parseHeaders(config.headers),
baggageUtils.parseKeyPairsIntoRecord(getEnv().OTEL_EXPORTER_OTLP_HEADERS)
);
this.agent = createHttpAgent(config);
this.compression = config.compression || CompressionAlgorithm.NONE;
}
onInit(_config: OTLPExporterNodeConfigBase): void {
this._isShutdown = false;
}
send(
objects: ExportItem[],
onSuccess: () => void,
onError: (error: otlpTypes.OTLPExporterError) => void
): void {
if (this._isShutdown) {
diag.debug('Shutdown already started. Cannot send objects');
return;
}
const serviceRequest = this.convert(objects);
const promise = new Promise<void>((resolve, reject) => {
sendWithHttp(
this,
JSON.stringify(serviceRequest),
'application/json',
resolve,
reject
);
})
.then(onSuccess, onError);
this._sendingPromises.push(promise);
const popPromise = () => {
const index = this._sendingPromises.indexOf(promise);
this._sendingPromises.splice(index, 1);
}
promise.then(popPromise, popPromise);
}
onShutdown(): void {}
}