117 lines
3.5 KiB
TypeScript
117 lines
3.5 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {createHttpClient as createHttpClientCore} from '@fluxer/http_client/src/HttpClient';
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import type {HttpClient, RequestOptions, StreamResponse} from '@fluxer/http_client/src/HttpClientTypes';
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import {HttpError as CoreHttpError} from '@fluxer/http_client/src/HttpError';
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import {createPublicInternetRequestUrlPolicy} from '@fluxer/http_client/src/PublicInternetRequestUrlPolicy';
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import type {ErrorType} from '@fluxer/media_proxy/src/types/HonoEnv';
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import type {MetricsInterface} from '@fluxer/media_proxy/src/types/Metrics';
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import type {TracingInterface} from '@fluxer/media_proxy/src/types/Tracing';
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export class HttpError extends Error {
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constructor(
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message: string,
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public readonly status?: number,
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public readonly response?: Response,
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public readonly isExpected = false,
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public readonly errorType?: ErrorType,
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) {
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super(message);
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this.name = 'HttpError';
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}
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}
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function convertHttpError(err: unknown): never {
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if (err instanceof CoreHttpError && err instanceof Error) {
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throw new HttpError(
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err.message,
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err.status,
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err.response,
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err.isExpected,
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(err.errorType as ErrorType) ?? undefined,
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);
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}
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throw err;
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}
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export function createHttpClient(
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userAgent: string,
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options?: {metrics?: MetricsInterface | undefined; tracing?: TracingInterface | undefined},
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): HttpClient {
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const {metrics, tracing} = options ?? {};
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const coreClient: HttpClient = createHttpClientCore({
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userAgent,
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requestUrlPolicy: createPublicInternetRequestUrlPolicy(),
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telemetry: {
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metrics: metrics
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? {
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counter: (params) => {
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const newName = params.name.replace('http_client', 'media_proxy.origin');
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metrics.counter({...params, name: newName});
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},
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histogram: (params) => {
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const newName = params.name.replace('http_client', 'media_proxy.origin');
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metrics.histogram({...params, name: newName});
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},
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}
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: undefined,
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tracing: tracing
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? {
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withSpan: (spanOpts, fn) =>
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tracing.withSpan(
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{
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name: spanOpts.name.replace('http_client.fetch', 'origin.fetch'),
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attributes: spanOpts.attributes as Record<string, string | number | boolean | undefined>,
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},
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fn,
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),
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}
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: undefined,
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},
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});
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async function sendRequest(opts: RequestOptions): Promise<StreamResponse> {
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try {
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const result = await coreClient.sendRequest(opts);
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const contentLength = result.headers.get('content-length');
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if (contentLength && metrics) {
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const bytes = Number.parseInt(contentLength, 10);
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if (!Number.isNaN(bytes)) {
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metrics.counter({
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name: 'media_proxy.origin.bytes',
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dimensions: {method: opts.method ?? 'GET'},
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value: bytes,
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});
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}
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}
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return result;
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} catch (error) {
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convertHttpError(error);
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}
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}
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return {
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request: sendRequest,
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sendRequest,
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streamToString: coreClient.streamToString,
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};
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}
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