urllib
Version:
Help in opening URLs (mostly HTTP) in a complex world — basic and digest authentication, redirections, timeout and more. Base undici API.
246 lines • 18 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.fetch = exports.FetchFactory = void 0;
const node_async_hooks_1 = require("node:async_hooks");
const node_util_1 = require("node:util");
const undici_1 = require("undici");
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
const symbols_js_1 = __importDefault(require("undici/lib/core/symbols.js"));
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
const response_js_1 = require("undici/lib/web/fetch/response.js");
const HttpClient_js_1 = require("./HttpClient.js");
const HttpAgent_js_1 = require("./HttpAgent.js");
const diagnosticsChannel_js_1 = require("./diagnosticsChannel.js");
const utils_js_1 = require("./utils.js");
const symbols_js_2 = __importDefault(require("./symbols.js"));
const BaseAgent_js_1 = require("./BaseAgent.js");
const debug = (0, node_util_1.debuglog)('urllib/fetch');
class FetchFactory {
#dispatcher;
#opaqueLocalStorage = new node_async_hooks_1.AsyncLocalStorage();
static #instance = new FetchFactory();
setClientOptions(clientOptions) {
let dispatcherOption = {
opaqueLocalStorage: this.#opaqueLocalStorage,
};
let dispatcherClazz = BaseAgent_js_1.BaseAgent;
if (clientOptions?.lookup || clientOptions?.checkAddress) {
dispatcherOption = {
...dispatcherOption,
lookup: clientOptions.lookup,
checkAddress: clientOptions.checkAddress,
connect: clientOptions.connect,
allowH2: clientOptions.allowH2,
};
dispatcherClazz = HttpAgent_js_1.HttpAgent;
}
else if (clientOptions?.connect) {
dispatcherOption = {
...dispatcherOption,
connect: clientOptions.connect,
allowH2: clientOptions.allowH2,
};
dispatcherClazz = BaseAgent_js_1.BaseAgent;
}
else if (clientOptions?.allowH2) {
// Support HTTP2
dispatcherOption = {
...dispatcherOption,
allowH2: clientOptions.allowH2,
};
dispatcherClazz = BaseAgent_js_1.BaseAgent;
}
this.#dispatcher = new dispatcherClazz(dispatcherOption);
(0, diagnosticsChannel_js_1.initDiagnosticsChannel)();
}
getDispatcher() {
return this.#dispatcher ?? (0, undici_1.getGlobalDispatcher)();
}
setDispatcher(dispatcher) {
this.#dispatcher = dispatcher;
}
getDispatcherPoolStats() {
const agent = this.getDispatcher();
// origin => Pool Instance
const clients = Reflect.get(agent, symbols_js_1.default.kClients);
const poolStatsMap = {};
if (!clients) {
return poolStatsMap;
}
for (const [key, ref] of clients) {
const pool = (typeof ref.deref === 'function' ? ref.deref() : ref);
// NOTE: pool become to { dispatcher: Pool } in undici@v7
const stats = pool?.stats ?? pool?.dispatcher?.stats;
if (!stats)
continue;
poolStatsMap[key] = {
connected: stats.connected,
free: stats.free,
pending: stats.pending,
queued: stats.queued,
running: stats.running,
size: stats.size,
};
}
return poolStatsMap;
}
static setClientOptions(clientOptions) {
FetchFactory.#instance.setClientOptions(clientOptions);
}
static getDispatcherPoolStats() {
return FetchFactory.#instance.getDispatcherPoolStats();
}
async fetch(input, init) {
const requestStartTime = performance.now();
init = init ?? {};
init.dispatcher = init.dispatcher ?? this.#dispatcher;
const request = new undici_1.Request(input, init);
const requestId = (0, utils_js_1.globalId)('HttpClientRequest');
// https://developer.chrome.com/docs/devtools/network/reference/?utm_source=devtools#timing-explanation
const timing = {
// socket assigned
queuing: 0,
// dns lookup time
dnslookup: 0,
// socket connected
connected: 0,
// request headers sent
requestHeadersSent: 0,
// request sent, including headers and body
requestSent: 0,
// Time to first byte (TTFB), the response headers have been received
waiting: 0,
// the response body and trailers have been received
contentDownload: 0,
};
// using opaque to diagnostics channel, binding request and socket
const internalOpaque = {
[symbols_js_2.default.kRequestId]: requestId,
[symbols_js_2.default.kRequestStartTime]: requestStartTime,
[symbols_js_2.default.kEnableRequestTiming]: !!(init.timing ?? true),
[symbols_js_2.default.kRequestTiming]: timing,
// [symbols.kRequestOriginalOpaque]: originalOpaque,
};
const reqMeta = {
requestId,
url: request.url,
args: {
method: request.method,
type: request.method,
data: request.body,
headers: (0, utils_js_1.convertHeader)(request.headers),
},
retries: 0,
};
const fetchMeta = {
requestId,
request,
};
const socketInfo = {
id: 0,
localAddress: '',
localPort: 0,
remoteAddress: '',
remotePort: 0,
remoteFamily: '',
bytesWritten: 0,
bytesRead: 0,
handledRequests: 0,
handledResponses: 0,
};
HttpClient_js_1.channels.request.publish({
request: reqMeta,
isSentByFetch: true,
fetchOpaque: internalOpaque,
});
HttpClient_js_1.channels.fetchRequest.publish({
fetch: fetchMeta,
fetchOpaque: internalOpaque,
});
let res;
// keep urllib createCallbackResponse style
const resHeaders = {};
const urllibResponse = {
status: -1,
statusCode: -1,
statusText: '',
statusMessage: '',
headers: resHeaders,
size: 0,
aborted: false,
rt: 0,
keepAliveSocket: true,
requestUrls: [
request.url,
],
timing,
socket: socketInfo,
retries: 0,
socketErrorRetries: 0,
};
try {
await this.#opaqueLocalStorage.run(internalOpaque, async () => {
res = await (0, undici_1.fetch)(request);
});
}
catch (e) {
(0, utils_js_1.updateSocketInfo)(socketInfo, internalOpaque, e);
urllibResponse.rt = (0, utils_js_1.performanceTime)(requestStartTime);
debug('Request#%d throw error: %s', requestId, e);
HttpClient_js_1.channels.fetchResponse.publish({
fetch: fetchMeta,
error: e,
fetchOpaque: internalOpaque,
});
HttpClient_js_1.channels.response.publish({
request: reqMeta,
response: urllibResponse,
error: e,
isSentByFetch: true,
fetchOpaque: internalOpaque,
});
throw e;
}
// get undici internal response
const state = (0, response_js_1.getResponseState)(res);
(0, utils_js_1.updateSocketInfo)(socketInfo, internalOpaque);
urllibResponse.headers = (0, utils_js_1.convertHeader)(res.headers);
urllibResponse.status = urllibResponse.statusCode = res.status;
urllibResponse.statusMessage = res.statusText;
if (urllibResponse.headers['content-length']) {
urllibResponse.size = parseInt(urllibResponse.headers['content-length']);
}
urllibResponse.rt = (0, utils_js_1.performanceTime)(requestStartTime);
debug('Request#%d got response, status: %s, headers: %j, timing: %j, socket: %j', requestId, urllibResponse.status, urllibResponse.headers, timing, urllibResponse.socket);
HttpClient_js_1.channels.fetchResponse.publish({
fetch: fetchMeta,
timingInfo: state.timingInfo,
response: res,
fetchOpaque: internalOpaque,
});
HttpClient_js_1.channels.response.publish({
request: reqMeta,
response: urllibResponse,
isSentByFetch: true,
fetchOpaque: internalOpaque,
});
return res;
}
static getDispatcher() {
return FetchFactory.#instance.getDispatcher();
}
static setDispatcher(dispatcher) {
FetchFactory.#instance.setDispatcher(dispatcher);
}
static async fetch(input, init) {
return FetchFactory.#instance.fetch(input, init);
}
}
exports.FetchFactory = FetchFactory;
exports.fetch = FetchFactory.fetch;
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