@opentelemetry/exporter-zipkin
Version:
OpenTelemetry Zipkin Exporter allows the user to send collected traces to Zipkin.
67 lines • 2.28 kB
JavaScript
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
import { diag } from '@opentelemetry/api';
import { ExportResultCode } from '@opentelemetry/core';
import * as http from 'http';
import * as https from 'https';
/**
* Prepares send function that will send spans to the remote Zipkin service.
* @param urlStr - url to send spans
* @param headers - headers
* send
*/
export function prepareSend(urlStr, headers) {
const url = new URL(urlStr);
const reqOpts = Object.assign({
method: 'POST',
headers: {
'Content-Type': 'application/json',
...headers,
},
});
/**
* Send spans to the remote Zipkin service.
*/
return function send(zipkinSpans, done) {
if (zipkinSpans.length === 0) {
diag.debug('Zipkin send with empty spans');
return done({ code: ExportResultCode.SUCCESS });
}
const { request } = url.protocol === 'http:' ? http : https;
const req = request(url, reqOpts, (res) => {
let rawData = '';
res.on('data', chunk => {
rawData += chunk;
});
res.on('end', () => {
const statusCode = res.statusCode || 0;
diag.debug(`Zipkin response status code: ${statusCode}, body: ${rawData}`);
// Consider 2xx and 3xx as success.
if (statusCode < 400) {
return done({ code: ExportResultCode.SUCCESS });
// Consider 4xx as failed non-retryable.
}
else {
return done({
code: ExportResultCode.FAILED,
error: new Error(`Got unexpected status code from zipkin: ${statusCode}`),
});
}
});
});
req.on('error', error => {
return done({
code: ExportResultCode.FAILED,
error,
});
});
// Issue request to remote service
const payload = JSON.stringify(zipkinSpans);
diag.debug(`Zipkin request payload: ${payload}`);
req.write(payload, 'utf8');
req.end();
};
}
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