/
CollectorExporterNodeBase.ts
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/
CollectorExporterNodeBase.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 { CollectorExporterBase } from '../../CollectorExporterBase';
import { CollectorExporterNodeConfigBase } from './types';
import * as collectorTypes from '../../types';
import { parseHeaders } from '../../util';
import { sendWithHttp } from './util';
/**
* Collector Metric Exporter abstract base class
*/
export abstract class CollectorExporterNodeBase<
ExportItem,
ServiceRequest
> extends CollectorExporterBase<
CollectorExporterNodeConfigBase,
ExportItem,
ServiceRequest
> {
DEFAULT_HEADERS: Record<string, string> = {};
headers: Record<string, string>;
keepAlive: boolean = true;
httpAgentOptions: http.AgentOptions | https.AgentOptions = {};
constructor(config: CollectorExporterNodeConfigBase = {}) {
super(config);
if ('metadata' in config) {
this.logger.warn('Metadata cannot be set when using http');
}
this.headers =
parseHeaders(config.headers, this.logger) || this.DEFAULT_HEADERS;
if (typeof config.keepAlive === 'boolean') {
this.keepAlive = config.keepAlive;
}
if (config.httpAgentOptions) {
if (!this.keepAlive) {
this.logger.warn(
'httpAgentOptions is used only when keepAlive is true'
);
}
this.httpAgentOptions = Object.assign({}, config.httpAgentOptions);
}
}
onInit(_config: CollectorExporterNodeConfigBase): void {
this._isShutdown = false;
}
send(
objects: ExportItem[],
onSuccess: () => void,
onError: (error: collectorTypes.CollectorExporterError) => void
): void {
if (this._isShutdown) {
this.logger.debug('Shutdown already started. Cannot send objects');
return;
}
const serviceRequest = this.convert(objects);
const promise = new Promise(resolve => {
const _onSuccess = (): void => {
onSuccess();
_onFinish();
};
const _onError = (error: collectorTypes.CollectorExporterError): void => {
onError(error);
_onFinish();
};
const _onFinish = () => {
resolve();
const index = this._sendingPromises.indexOf(promise);
this._sendingPromises.splice(index, 1);
};
sendWithHttp(
this,
JSON.stringify(serviceRequest),
'application/json',
_onSuccess,
_onError
);
});
this._sendingPromises.push(promise);
}
onShutdown(): void {}
}