More k8s websocket proxying
This commit is contained in:
Radon Rosborough
parent
1aed40f7eb
commit
ddb0084b0c
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@ -20,7 +20,7 @@ type clientMessage struct {
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}
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type serverMessage struct {
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// "start", "stdout", "stderr", "exit", "warn", "error"
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// "stdout", "stderr", "exit", "warn", "error"
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Event string `json:"event"`
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// contents of stdout/stderr
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Data []byte `json:"data,omitempty"`
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@ -3,6 +3,7 @@ package main
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import (
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"fmt"
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"os"
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"strings"
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"syscall"
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"time"
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)
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@ -26,6 +27,17 @@ type managedProcess struct {
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CloseChan chan struct{}
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}
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func cleanEnv(env []string) []string {
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newEnv := []string{}
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for _, entry := range env {
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if strings.HasPrefix(entry, "RIJU_") || strings.HasPrefix(entry, "KUBERNETES_") {
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continue
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}
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newEnv = append(newEnv, entry)
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}
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return newEnv
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}
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func NewManagedProcess(name string, argv []string, attr *os.ProcAttr) (*managedProcess, error) {
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mp := &managedProcess{
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internalExitChan: make(chan struct{}, 16),
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@ -66,6 +78,10 @@ func NewManagedProcess(name string, argv []string, attr *os.ProcAttr) (*managedP
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newAttr.Files[1] = mp.stdoutWrite
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newAttr.Files[2] = mp.stderrWrite
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}
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if newAttr.Env == nil {
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newAttr.Env = os.Environ()
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}
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newAttr.Env = cleanEnv(newAttr.Env)
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mp.proc, err = os.StartProcess(name, argv, newAttr)
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if err != nil {
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return mp, fmt.Errorf("spawning process: %w", err)
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184
backend/k8s.js
184
backend/k8s.js
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@ -1,5 +1,6 @@
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import * as k8sClient from "@kubernetes/client-node";
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import lodash from "lodash";
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import fetch from "node-fetch";
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import WebSocket from "ws";
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const kubeconfig = new k8sClient.KubeConfig();
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kubeconfig.loadFromDefault();
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@ -46,6 +47,9 @@ export function watchPods() {
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callback("add", pods[podName]);
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}
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},
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podExists: (podName) => {
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return podName in pods;
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},
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};
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}
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@ -125,11 +129,59 @@ export async function createUserSession({
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},
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command: ["/riju-bin/agent"],
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env: [
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// For agent
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{
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name: "RIJU_AGENT_COMMAND_PREFIX",
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value: "runuser -u riju --",
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},
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// For user code
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{
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name: "HOME",
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value: "/home/riju",
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},
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{
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name: "LANG",
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value: "C.UTF-8",
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},
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{
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name: "LC_ALL",
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value: "C.UTF-8",
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},
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{
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name: "LOGNAME",
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value: "riju",
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},
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{
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name: "PATH",
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value:
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"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
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},
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{
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name: "PWD",
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value: "/home/riju/src",
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},
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{
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name: "SHELL",
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value: "/usr/bin/bash",
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},
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{
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name: "TERM",
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value: "xterm-256color",
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},
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{
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name: "TMPDIR",
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value: "/tmp",
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},
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{
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name: "USER",
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value: "riju",
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},
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{
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name: "USERNAME",
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value: "riju",
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},
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],
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workingDir: "/home/riju/src",
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securityContext: {
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runAsUser: 0,
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},
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@ -182,24 +234,136 @@ export async function createUserSession({
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},
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})
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).body;
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return pod.metadata.name;
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}
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export async function initUserSession({ watcher, podName, proxyInfo }) {
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let done = false;
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try {
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return await new Promise(async (resolve, reject) => {
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try {
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setTimeout(
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() => reject("timed out waiting for pod to become ready"),
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5 * 60 * 1000
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);
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const podIP = await new Promise((resolve, reject) => {
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setTimeout(() => reject("timed out"), 5 * 60 * 1000);
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watcher.setCallback(pod.metadata.name, (event, pod) => {
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watcher.setCallback(podName, (event, pod) => {
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if (event == "delete") {
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reject(new Error("pod was deleted"));
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} else if (pod.status.phase === "Failed") {
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reject(new Error("pod status became Failed"));
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} else if (
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pod.status.podIP &&
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lodash.every(pod.status.containerStatuses, (status) => status.ready)
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) {
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} else if (pod.status.podIP) {
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resolve(pod.status.podIP);
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} else {
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console.log(event, JSON.stringify(pod.status, null, 2));
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}
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});
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});
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return podIP;
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while (!done) {
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let resp;
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try {
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if (!proxyInfo) {
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resp = await fetch(`http://${podIP}:869`);
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} else {
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resp = await fetch(
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`${proxyInfo.httpProtocol}://${proxyInfo.host}:${proxyInfo.port}/${podIP}/health`,
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{
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headers: {
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Authorization: `Basic ${Buffer.from(
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`${proxyInfo.username}:${proxyInfo.password}`
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).toString("base64")}`,
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},
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}
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);
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}
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if (!resp.ok) {
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throw new Error(`Got HTTP error ${resp.status}`);
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} else {
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done = true;
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}
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} catch (err) {
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await new Promise((resolve) => setTimeout(resolve, 250));
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}
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}
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resolve({
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exec: (cmdline, { on, pty }) => {
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// on :: { stdout, stderr, exit, error, close }
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if (pty) {
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cmdline = ["/riju-bin/ptyify", ...cmdline];
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}
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let conn;
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if (!proxyInfo) {
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conn = new WebSocket(
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`ws://${podIP}:869/exec?${new URLSearchParams({
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cmdline,
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}).toString()}`
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);
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} else {
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conn = new WebSocket(
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`${proxyInfo.wsProtocol}://${proxyInfo.host}:${
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proxyInfo.port
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}/${podIP}/exec?${new URLSearchParams({
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cmdline,
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}).toString()}`,
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{
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headers: {
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Authorization: `Basic ${Buffer.from(
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`${proxyInfo.username}:${proxyInfo.password}`
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).toString("base64")}`,
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},
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}
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);
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}
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conn.on("message", (msg) => {
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let event, data, text, exitStatus;
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try {
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({ event, data, text, exitStatus } = JSON.parse(msg));
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} catch (err) {
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on.error(
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`Unable to parse JSON message from agent: ${JSON.stringify(
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msg
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)}`
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);
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}
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switch (event) {
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case "stdout":
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on.stdout(data);
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break;
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case "stderr":
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on.stderr(data);
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break;
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case "exit":
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on.exit(exitStatus);
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break;
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case "warn":
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case "error":
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on.error(text);
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break;
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default:
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on.error(`Unexpected event type: ${JSON.stringify(event)}`);
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break;
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}
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});
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conn.on("close", () => {
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on.close();
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});
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conn.on("error", (err) => {
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on.error(`Websocket closed with error: ${err}`);
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on.close();
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});
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return {
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stdin: {
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write: (data) =>
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conn.write(JSON.stringify({ event: "stdin", data })),
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},
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};
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},
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});
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} catch (err) {
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reject(err);
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}
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});
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} finally {
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done = true;
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}
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}
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export async function deleteUserSessions(sessionsToDelete) {
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@ -4,7 +4,7 @@ import process from "process";
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import { readLangConfig } from "../lib/yaml.js";
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import * as k8s from "./k8s.js";
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import { getUUID, quote } from "./util.js";
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import { deptyify, getUUID } from "./util.js";
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function die(msg) {
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console.error(msg);
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@ -27,54 +27,49 @@ async function main() {
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const sessionID = getUUID();
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console.log(`Starting session with UUID ${sessionID}`);
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const watcher = k8s.watchPods();
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await k8s.createUserSession({
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const podName = await k8s.createUserSession({
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watcher,
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sessionID,
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langConfig,
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revisions: {
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agent: "20221229-002450-semantic-moccasin-albatross",
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agent: "20230104-131916-extensive-aquamarine-crocodile",
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ptyify: "20221228-023645-clean-white-gorilla",
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langImage: "20221227-195753-forward-harlequin-wolverine",
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},
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});
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// let buffer = "";
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// await new Promise((resolve) => {
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// session.stdout.on("data", (data) => {
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// buffer += data.toString();
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// let idx;
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// while ((idx = buffer.indexOf("\n")) !== -1) {
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// const line = buffer.slice(0, idx);
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// buffer = buffer.slice(idx + 1);
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// if (line === "riju: container ready") {
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// resolve();
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// } else {
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// console.error(line);
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// }
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// }
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// });
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// });
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// const args = [].concat.apply(
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// ["riju-pty", "-f"],
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// privilegedPty(
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// { uuid },
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// bash(
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// `env L='${lang}' LANG_CONFIG=${quote(
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// JSON.stringify(langConfig)
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// )} bash --rcfile <(cat <<< ${quote(sandboxScript)})`
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// )
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// )
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// );
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// const proc = spawn(args[0], args.slice(1), {
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// stdio: "inherit",
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// });
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// try {
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// await new Promise((resolve, reject) => {
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// proc.on("error", reject);
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// proc.on("close", resolve);
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// });
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// } finally {
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// session.kill();
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// }
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const proxyInfo = {
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httpProtocol: "https",
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wsProtocol: "wss",
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host: "k8s.riju.codes",
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port: 1869,
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username: "admin",
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password: process.env.RIJU_PROXY_PASSWORD,
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};
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console.log(`Waiting for session to become ready`);
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const session = await k8s.initUserSession({
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watcher,
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podName,
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proxyInfo,
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});
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console.log(`Initializing sandbox`);
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let handlePtyInput;
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const pty = await deptyify({
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handlePtyInput: (data) => handlePtyInput(data),
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handlePtyExit: (_status) => {},
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});
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await new Promise((resolve) => {
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const exec = session.exec(["bash"], {
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pty: true,
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on: {
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stdout: (data) => pty.handlePtyOutput(data),
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stderr: (data) => process.stderr.write(data),
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exit: (status) => process.exit(status),
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error: (err) => process.stderr.write(`riju: error: ${err}\n`),
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close: () => resolve(),
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},
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});
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handlePtyInput = (data) => exec.stdin.write(data);
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});
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}
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main().catch(die);
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@ -1,7 +1,10 @@
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import { spawn } from "child_process";
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import { promises as fs } from "fs";
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import process from "process";
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import TailFile from "@logdna/tail-file";
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import * as Sentry from "@sentry/node";
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import * as tmp from "tmp-promise";
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import { v4 as getUUIDOrig } from "uuid";
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let sentryEnabled = false;
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@ -159,3 +162,73 @@ export function asBool(value, def) {
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}
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throw new Error(`asBool doesn't understand value: ${value}`);
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}
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export function deptyify({ handlePtyInput, handlePtyExit }) {
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return new Promise((resolve, reject) => {
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const done = false;
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let triggerDone = () => {
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// Calling the function stored in this variable should have the
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// effect of terminating the tmp-promise callback and getting
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// the temporary directory cleaned up.
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done = true;
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};
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tmp
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.withDir(
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async (dir) => {
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const mkfifo = spawn("mkfifo", ["input", "output"], {
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cwd: dir.path,
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});
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await new Promise((resolve, reject) => {
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mkfifo.on("error", reject);
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mkfifo.on("exit", (code) => {
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if (code === 0) {
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resolve();
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} else {
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reject(code);
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}
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});
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});
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const input = new TailFile(`${dir.path}/input`, {
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encoding: "utf-8",
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});
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input.on("data", (data) => handlePtyOutput(data));
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input.on("tail_error", logError);
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input.on("error", logError);
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await input.start();
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const output = await fs.open(`${dir.path}/output`, "w");
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const proc = spawn(
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"system/out/riju-pty",
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["-f", "sh", "-c", "cat > input & cat output"],
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{
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cwd: dir.path,
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}
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);
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proc.on("exit", (status) => {
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handlePtyExit(status);
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triggerDone();
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});
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resolve({
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handlePtyOutput: async (data) => {
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await input.write(data);
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},
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});
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},
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{
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unsafeCleanup: true,
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}
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)
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.then(async () => {
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await new Promise((resolve) => {
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if (done) {
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resolve();
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} else {
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triggerDone = resolve;
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}
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});
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})
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.catch((err) => {
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logError(err);
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reject(err);
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});
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});
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}
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|
|
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|
|
@ -10,6 +10,7 @@
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"@babel/preset-env": "^7.12.11",
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"@balena/dockerignore": "^1.0.2",
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"@kubernetes/client-node": "^0.18.0",
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"@logdna/tail-file": "^3.0.0",
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"@sentry/node": "^6.11.0",
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"async-lock": "^1.2.6",
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"babel-loader": "^8.2.2",
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|
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@ -29,6 +30,7 @@
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|||
"monaco-editor": "0.20.0",
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||||
"monaco-editor-webpack-plugin": "1.9.0",
|
||||
"monaco-languageclient": "0.13.0",
|
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"node-fetch": "^3.3.0",
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"p-queue": "^6.6.2",
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"parse-passwd": "^1.0.0",
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"prettier": "^2.3.1",
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@ -37,17 +39,18 @@
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"semaphore": "^1.1.0",
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"strip-ansi": "^6.0.0",
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"style-loader": "^2.0.0",
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"tmp-promise": "^3.0.3",
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"unique-names-generator": "^4.7.1",
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"uuid": "^8.3.2",
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"vscode-languageserver-protocol": "3.15.3",
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"webpack": "^4.44.2",
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"webpack-cli": "^4.3.0",
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"ws": "^8.11.0",
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"xterm": "^4.9.0",
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"xterm-addon-fit": "^0.4.0",
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"yaml": "^1.10.0"
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},
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"$comments": [
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||||
"limiter version pinned due to https://github.com/jhurliman/node-rate-limiter/issues/80",
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||||
"monaco-languageclient, monaco-editor, vscode-languageserver-protocol pinned because their APIs changed a bunch and Riju hasn't been updated yet"
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||||
]
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||||
}
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||||
|
|
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|||
51
yarn.lock
51
yarn.lock
|
|
@ -904,6 +904,11 @@
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optionalDependencies:
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||||
openid-client "^5.3.0"
|
||||
|
||||
"@logdna/tail-file@^3.0.0":
|
||||
version "3.0.0"
|
||||
resolved "https://registry.yarnpkg.com/@logdna/tail-file/-/tail-file-3.0.0.tgz#0120353e59bf04b318d4861684e95682b0e85071"
|
||||
integrity sha512-aZy8XzJI9zwl7gbmQa1L5Hr6yJbS062OMQJ7I9sqHD/QMEBfwlhxyytJ4Qe2jAoimefuabopEi4Gk+t/7to6/A==
|
||||
|
||||
"@sentry/core@6.11.0":
|
||||
version "6.11.0"
|
||||
resolved "https://registry.yarnpkg.com/@sentry/core/-/core-6.11.0.tgz#40e94043afcf6407a109be26655c77832c64e740"
|
||||
|
|
@ -2047,6 +2052,11 @@ dashdash@^1.12.0:
|
|||
dependencies:
|
||||
assert-plus "^1.0.0"
|
||||
|
||||
data-uri-to-buffer@^4.0.0:
|
||||
version "4.0.0"
|
||||
resolved "https://registry.yarnpkg.com/data-uri-to-buffer/-/data-uri-to-buffer-4.0.0.tgz#b5db46aea50f6176428ac05b73be39a57701a64b"
|
||||
integrity sha512-Vr3mLBA8qWmcuschSLAOogKgQ/Jwxulv3RNE4FXnYWRGujzrRWQI4m12fQqRkwX06C0KanhLr4hK+GydchZsaA==
|
||||
|
||||
debounce@^1.2.0:
|
||||
version "1.2.1"
|
||||
resolved "https://registry.yarnpkg.com/debounce/-/debounce-1.2.1.tgz#38881d8f4166a5c5848020c11827b834bcb3e0a5"
|
||||
|
|
@ -2441,6 +2451,14 @@ fastest-levenshtein@^1.0.12:
|
|||
resolved "https://registry.yarnpkg.com/fastest-levenshtein/-/fastest-levenshtein-1.0.12.tgz#9990f7d3a88cc5a9ffd1f1745745251700d497e2"
|
||||
integrity sha512-On2N+BpYJ15xIC974QNVuYGMOlEVt4s0EOI3wwMqOmK1fdDY+FN/zltPV8vosq4ad4c/gJ1KHScUn/6AWIgiow==
|
||||
|
||||
fetch-blob@^3.1.2, fetch-blob@^3.1.4:
|
||||
version "3.2.0"
|
||||
resolved "https://registry.yarnpkg.com/fetch-blob/-/fetch-blob-3.2.0.tgz#f09b8d4bbd45adc6f0c20b7e787e793e309dcce9"
|
||||
integrity sha512-7yAQpD2UMJzLi1Dqv7qFYnPbaPx7ZfFK6PiIxQ4PfkGPyNyl2Ugx+a/umUonmKqjhM4DnfbMvdX6otXq83soQQ==
|
||||
dependencies:
|
||||
node-domexception "^1.0.0"
|
||||
web-streams-polyfill "^3.0.3"
|
||||
|
||||
figgy-pudding@^3.5.1:
|
||||
version "3.5.2"
|
||||
resolved "https://registry.yarnpkg.com/figgy-pudding/-/figgy-pudding-3.5.2.tgz#b4eee8148abb01dcf1d1ac34367d59e12fa61d6e"
|
||||
|
|
@ -2565,6 +2583,13 @@ form-data@~2.3.2:
|
|||
combined-stream "^1.0.6"
|
||||
mime-types "^2.1.12"
|
||||
|
||||
formdata-polyfill@^4.0.10:
|
||||
version "4.0.10"
|
||||
resolved "https://registry.yarnpkg.com/formdata-polyfill/-/formdata-polyfill-4.0.10.tgz#24807c31c9d402e002ab3d8c720144ceb8848423"
|
||||
integrity sha512-buewHzMvYL29jdeQTVILecSaZKnt/RJWjoZCF5OW60Z67/GmSLBkOFM7qh1PI3zFNtJbaZL5eQu1vLfazOwj4g==
|
||||
dependencies:
|
||||
fetch-blob "^3.1.2"
|
||||
|
||||
forwarded@0.2.0:
|
||||
version "0.2.0"
|
||||
resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.2.0.tgz#2269936428aad4c15c7ebe9779a84bf0b2a81811"
|
||||
|
|
@ -3621,6 +3646,20 @@ neo-async@^2.5.0, neo-async@^2.6.1:
|
|||
resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.2.tgz#b4aafb93e3aeb2d8174ca53cf163ab7d7308305f"
|
||||
integrity sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==
|
||||
|
||||
node-domexception@^1.0.0:
|
||||
version "1.0.0"
|
||||
resolved "https://registry.yarnpkg.com/node-domexception/-/node-domexception-1.0.0.tgz#6888db46a1f71c0b76b3f7555016b63fe64766e5"
|
||||
integrity sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==
|
||||
|
||||
node-fetch@^3.3.0:
|
||||
version "3.3.0"
|
||||
resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-3.3.0.tgz#37e71db4ecc257057af828d523a7243d651d91e4"
|
||||
integrity sha512-BKwRP/O0UvoMKp7GNdwPlObhYGB5DQqwhEDQlNKuoqwVYSxkSZCSbHjnFFmUEtwSKRPU4kNK8PbDYYitwaE3QA==
|
||||
dependencies:
|
||||
data-uri-to-buffer "^4.0.0"
|
||||
fetch-blob "^3.1.4"
|
||||
formdata-polyfill "^4.0.10"
|
||||
|
||||
node-libs-browser@^2.2.1:
|
||||
version "2.2.1"
|
||||
resolved "https://registry.yarnpkg.com/node-libs-browser/-/node-libs-browser-2.2.1.tgz#b64f513d18338625f90346d27b0d235e631f6425"
|
||||
|
|
@ -4800,7 +4839,7 @@ timers-browserify@^2.0.4:
|
|||
dependencies:
|
||||
setimmediate "^1.0.4"
|
||||
|
||||
tmp-promise@^3.0.2:
|
||||
tmp-promise@^3.0.2, tmp-promise@^3.0.3:
|
||||
version "3.0.3"
|
||||
resolved "https://registry.yarnpkg.com/tmp-promise/-/tmp-promise-3.0.3.tgz#60a1a1cc98c988674fcbfd23b6e3367bdeac4ce7"
|
||||
integrity sha512-RwM7MoPojPxsOBYnyd2hy0bxtIlVrihNs9pj5SUvY8Zz1sQcQG2tG1hSr8PDxfgEB8RNKDhqbIlroIarSNDNsQ==
|
||||
|
|
@ -5116,6 +5155,11 @@ watchpack@^1.7.4:
|
|||
chokidar "^3.4.1"
|
||||
watchpack-chokidar2 "^2.0.1"
|
||||
|
||||
web-streams-polyfill@^3.0.3:
|
||||
version "3.2.1"
|
||||
resolved "https://registry.yarnpkg.com/web-streams-polyfill/-/web-streams-polyfill-3.2.1.tgz#71c2718c52b45fd49dbeee88634b3a60ceab42a6"
|
||||
integrity sha512-e0MO3wdXWKrLbL0DgGnUV7WHVuw9OUvL4hjgnPkIeEvESk74gAITi5G606JtZPp39cd8HA9VQzCIvA49LpPN5Q==
|
||||
|
||||
webpack-cli@^4.3.0:
|
||||
version "4.7.2"
|
||||
resolved "https://registry.yarnpkg.com/webpack-cli/-/webpack-cli-4.7.2.tgz#a718db600de6d3906a4357e059ae584a89f4c1a5"
|
||||
|
|
@ -5216,6 +5260,11 @@ ws@^7.3.1:
|
|||
resolved "https://registry.yarnpkg.com/ws/-/ws-7.5.9.tgz#54fa7db29f4c7cec68b1ddd3a89de099942bb591"
|
||||
integrity sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==
|
||||
|
||||
ws@^8.11.0:
|
||||
version "8.11.0"
|
||||
resolved "https://registry.yarnpkg.com/ws/-/ws-8.11.0.tgz#6a0d36b8edfd9f96d8b25683db2f8d7de6e8e143"
|
||||
integrity sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==
|
||||
|
||||
xtend@^4.0.0, xtend@~4.0.1:
|
||||
version "4.0.2"
|
||||
resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.2.tgz#bb72779f5fa465186b1f438f674fa347fdb5db54"
|
||||
|
|
|
|||
Loading…
Reference in New Issue