@opentelemetry/otlp-exporter-base
Version:
OpenTelemetry OTLP Exporter base (for internal use only)
118 lines • 3.92 kB
JavaScript
/*
* 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 * as http from 'http';
import * as https from 'https';
import * as zlib from 'zlib';
import { Readable } from 'stream';
import { isExportRetryable, parseRetryAfterToMills, } from '../is-export-retryable';
import { OTLPExporterError } from '../types';
/**
* Sends data using http
* @param params
* @param agent
* @param data
* @param onDone
* @param timeoutMillis
*/
export function sendWithHttp(params, agent, data, onDone, timeoutMillis) {
const parsedUrl = new URL(params.url);
const nodeVersion = Number(process.versions.node.split('.')[0]);
const options = {
hostname: parsedUrl.hostname,
port: parsedUrl.port,
path: parsedUrl.pathname,
method: 'POST',
headers: {
...params.headers(),
},
agent: agent,
};
const request = parsedUrl.protocol === 'http:' ? http.request : https.request;
const req = request(options, (res) => {
const responseData = [];
res.on('data', chunk => responseData.push(chunk));
res.on('end', () => {
if (res.statusCode && res.statusCode < 299) {
onDone({
status: 'success',
data: Buffer.concat(responseData),
});
}
else if (res.statusCode && isExportRetryable(res.statusCode)) {
onDone({
status: 'retryable',
retryInMillis: parseRetryAfterToMills(res.headers['retry-after']),
});
}
else {
const error = new OTLPExporterError(res.statusMessage, res.statusCode, Buffer.concat(responseData).toString());
onDone({
status: 'failure',
error,
});
}
});
});
req.setTimeout(timeoutMillis, () => {
req.destroy();
onDone({
status: 'failure',
error: new Error('Request Timeout'),
});
});
req.on('error', (error) => {
onDone({
status: 'failure',
error,
});
});
const reportTimeoutErrorEvent = nodeVersion >= 14 ? 'close' : 'abort';
req.on(reportTimeoutErrorEvent, () => {
onDone({
status: 'failure',
error: new Error('Request timed out'),
});
});
compressAndSend(req, params.compression, data, (error) => {
onDone({
status: 'failure',
error,
});
});
}
export function compressAndSend(req, compression, data, onError) {
let dataStream = readableFromUint8Array(data);
if (compression === 'gzip') {
req.setHeader('Content-Encoding', 'gzip');
dataStream = dataStream
.on('error', onError)
.pipe(zlib.createGzip())
.on('error', onError);
}
dataStream.pipe(req).on('error', onError);
}
function readableFromUint8Array(buff) {
const readable = new Readable();
readable.push(buff);
readable.push(null);
return readable;
}
export function createHttpAgent(rawUrl, agentOptions) {
const parsedUrl = new URL(rawUrl);
const Agent = parsedUrl.protocol === 'http:' ? http.Agent : https.Agent;
return new Agent(agentOptions);
}
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