@opentelemetry/otlp-exporter-base
Version:
OpenTelemetry OTLP Exporter base (for internal use only)
59 lines • 2.47 kB
JavaScript
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
import { getSharedConfigurationDefaults, mergeOtlpSharedConfigurationWithDefaults, } from './shared-configuration';
import { validateAndNormalizeHeaders } from '../util';
function mergeHeaders(userProvidedHeaders, fallbackHeaders, defaultHeaders) {
return async () => {
const requiredHeaders = {
...(await defaultHeaders()),
};
const headers = {};
// add fallback ones first
if (fallbackHeaders != null) {
Object.assign(headers, await fallbackHeaders());
}
// override with user-provided ones
if (userProvidedHeaders != null) {
Object.assign(headers, validateAndNormalizeHeaders(await userProvidedHeaders()));
}
// override required ones.
return Object.assign(headers, requiredHeaders);
};
}
function validateUserProvidedUrl(url) {
if (url == null) {
return undefined;
}
try {
// NOTE: In non-browser environments, `globalThis.location` will be `undefined`.
const base = globalThis.location?.href;
return new URL(url, base).href;
}
catch {
throw new Error(`Configuration: Could not parse user-provided export URL: '${url}'`);
}
}
/**
* @param userProvidedConfiguration Configuration options provided by the user in code.
* @param fallbackConfiguration Fallback to use when the {@link userProvidedConfiguration} does not specify an option.
* @param defaultConfiguration The defaults as defined by the exporter specification
*/
export function mergeOtlpHttpConfigurationWithDefaults(userProvidedConfiguration, fallbackConfiguration, defaultConfiguration) {
return {
...mergeOtlpSharedConfigurationWithDefaults(userProvidedConfiguration, fallbackConfiguration, defaultConfiguration),
headers: mergeHeaders(userProvidedConfiguration.headers, fallbackConfiguration.headers, defaultConfiguration.headers),
url: validateUserProvidedUrl(userProvidedConfiguration.url) ??
fallbackConfiguration.url ??
defaultConfiguration.url,
};
}
export function getHttpConfigurationDefaults(requiredHeaders, signalResourcePath) {
return {
...getSharedConfigurationDefaults(),
headers: async () => requiredHeaders,
url: 'http://localhost:4318/' + signalResourcePath,
};
}
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