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import { getExtensionUri } from "../util/vscode";
const util = require("util");
const exec = util.promisify(require("child_process").exec);
const { spawn } = require("child_process");
import * as path from "path";
import * as fs from "fs";
import { getContinueServerUrl } from "../bridge";
import fetch from "node-fetch";
import * as vscode from "vscode";
import * as os from "os";
import fkill from "fkill";
async function runCommand(cmd: string): Promise<[string, string | undefined]> {
var stdout: any = "";
var stderr: any = "";
try {
var { stdout, stderr } = await exec(cmd, {
shell: process.platform === "win32" ? "powershell.exe" : undefined,
});
} catch (e: any) {
stderr = e.stderr;
stdout = e.stdout;
}
if (stderr === "") {
stderr = undefined;
}
if (typeof stdout === "undefined") {
stdout = "";
}
return [stdout, stderr];
}
async function checkServerRunning(serverUrl: string): Promise<boolean> {
// Check if already running by calling /health
try {
const response = await fetch(`${serverUrl}/health`);
if (response.status === 200) {
console.log("Continue python server already running");
return true;
} else {
return false;
}
} catch (e) {
return false;
}
}
export function getContinueGlobalPath(): string {
// This is ~/.continue on mac/linux
const continuePath = path.join(os.homedir(), ".continue");
if (!fs.existsSync(continuePath)) {
fs.mkdirSync(continuePath);
}
return continuePath;
}
function serverPath(): string {
const sPath = path.join(getContinueGlobalPath(), "server");
if (!fs.existsSync(sPath)) {
fs.mkdirSync(sPath);
}
return sPath;
}
export function devDataPath(): string {
const sPath = path.join(getContinueGlobalPath(), "dev_data");
if (!fs.existsSync(sPath)) {
fs.mkdirSync(sPath);
}
return sPath;
}
function serverVersionPath(): string {
return path.join(serverPath(), "server_version.txt");
}
export function getExtensionVersion() {
const extension = vscode.extensions.getExtension("continue.continue");
return extension?.packageJSON.version || "";
}
// Returns whether a server of the current version is already running
async function checkOrKillRunningServer(serverUrl: string): Promise<boolean> {
console.log("Checking if server is old version");
// Kill the server if it is running an old version
if (fs.existsSync(serverVersionPath())) {
const serverVersion = fs.readFileSync(serverVersionPath(), "utf8");
if (
serverVersion === getExtensionVersion() &&
(await checkServerRunning(serverUrl))
) {
// The current version is already up and running, no need to continue
return true;
}
}
console.log("Killing old server...");
try {
await fkill(":65432");
} catch (e: any) {
if (!e.message.includes("Process doesn't exist")) {
console.log("Failed to kill old server:", e);
}
}
return false;
}
export async function downloadFromS3(
bucket: string,
fileName: string,
destination: string,
region: string
) {
const s3Url = `https://${bucket}.s3.${region}.amazonaws.com/${fileName}`;
const response = await fetch(s3Url, {
method: "GET",
});
if (!response.ok) {
const text = await response.text();
const errText = `Failed to download Continue server from S3: ${text}`;
vscode.window.showErrorMessage(errText);
throw new Error(errText);
}
const buffer = await response.buffer();
fs.writeFileSync(destination, buffer);
}
export async function startContinuePythonServer() {
// Check vscode settings
const serverUrl = getContinueServerUrl();
if (serverUrl !== "http://localhost:65432") {
return;
}
// Check if server is already running
if (await checkOrKillRunningServer(serverUrl)) {
return;
}
// Download the server executable
const bucket = "continue-server-binaries";
const fileName =
os.platform() === "win32"
? "windows/run.exe"
: os.platform() === "darwin"
? "mac/run"
: "linux/run";
const destination = path.join(
getExtensionUri().fsPath,
"server",
"exe",
"run"
);
// First, check if the server is already downloaded
let shouldDownload = true;
if (fs.existsSync(destination)) {
// Check if the server is the correct version
const serverVersion = fs.readFileSync(serverVersionPath(), "utf8");
if (serverVersion === getExtensionVersion()) {
// The current version is already up and running, no need to continue
console.log("Continue server already downloaded");
shouldDownload = false;
}
}
if (shouldDownload) {
vscode.window.withProgress(
{
location: vscode.ProgressLocation.Notification,
title: "Installing Continue server...",
cancellable: false,
},
async () => {
await downloadFromS3(bucket, fileName, destination, "us-west-1");
}
);
}
// Get name of the corresponding executable for platform
if (os.platform() === "darwin") {
// Add necessary permissions
await runCommand(`chmod +x ${destination}`);
await runCommand(`xattr -dr com.apple.quarantine ${destination}`);
}
// Run the executable
const child = spawn(destination, {
shell: true,
});
child.stderr.on("data", (data: any) => {
console.log(data.toString());
});
child.on("error", (error: any) => {
console.log(`error: ${error.message}`);
});
child.on("close", (code: any) => {
console.log(`child process exited with code ${code}`);
});
child.stdout.on("data", (data: any) => {
console.log(`stdout: ${data.toString()}`);
});
// Write the current version of vscode extension to a file called server_version.txt
fs.writeFileSync(serverVersionPath(), getExtensionVersion());
}
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