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lens/src/main/proxy/ws-upgrade.ts

58 lines
2.4 KiB
TypeScript

/**
* Copyright (c) 2021 OpenLens Authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* This file is here so that the "../shell-session" import can be injected into
* LensProxy at creation time. So that the `pty.node` extension isn't loaded
* into Lens Extension webpack bundle.
*/
import * as WebSocket from "ws";
import type http from "http";
import type net from "net";
import url from "url";
import { NodeShellSession, LocalShellSession } from "../shell-session";
import { ClusterManager } from "../cluster-manager";
import logger from "../logger";
function createWsListener(): WebSocket.Server {
const ws = new WebSocket.Server({ noServer: true });
return ws.on("connection", ((socket: WebSocket, req: http.IncomingMessage) => {
const cluster = ClusterManager.getInstance().getClusterForRequest(req);
const nodeParam = url.parse(req.url, true).query["node"]?.toString();
const shell = nodeParam
? new NodeShellSession(socket, cluster, nodeParam)
: new LocalShellSession(socket, cluster);
shell.open()
.catch(error => logger.error(`[SHELL-SESSION]: failed to open: ${error}`, { error }));
}));
}
export async function handleWsUpgrade(req: http.IncomingMessage, socket: net.Socket, head: Buffer) {
const wsServer = createWsListener();
wsServer.handleUpgrade(req, socket, head, (con) => {
wsServer.emit("connection", con, req);
});
}