wip

bin/apps.tsx

@@ -1,7 +1,7 @@
 // Show the webapps hosted on this NOSEputer.
 
 import { $ } from "bun"
-import { apps } from "@/webapp"
+import { apps } from "@/webapp/server"
 
 const devMode = process.env.NODE_ENV !== "production"
 

bin/share.ts

@@ -1,6 +1,6 @@
 // Share a webapp with the public internet.
 
-import { apps } from "@/webapp"
+import { apps } from "@/webapp/server"
 import { connectSneaker, sneakers, sneakerUrl } from "@/sneaker"
 
 export default async function (app: string) {

bin/unshare.ts

@@ -1,6 +1,6 @@
 // Stop sharing a webapp with the public internet.
 
-import { apps } from "@/webapp"
+import { apps } from "@/webapp/server"
 import { disconnectSneaker, sneakers } from "@/sneaker"
 
 export default async function (app: string) {

src/dns.ts

@@ -2,7 +2,7 @@
 // Publishes webapps as subdomains on your local network
 
 import { watch } from "fs"
-import { apps } from "./webapp"
+import { apps } from "./webapp/server"
 import { expectDir } from "./utils"
 import { NOSE_DIR } from "./config"
 import { expectShellCmd } from "./utils"

src/helpers.tsx

@@ -8,7 +8,7 @@
 //   import { css } from "@nose"
 
 import { Hono } from "hono"
-import { type Handler, toResponse } from "./webapp"
+import { type Handler, toResponse } from "./webapp/server"
 
 //
 // command helpers

src/server.tsx

@@ -7,9 +7,9 @@ import color from "kleur"
 
 import type { Message } from "./shared/types"
 import { rewriteJsImports } from "./build"
-import { NOSE_ICON, NOSE_BIN, NOSE_DATA, NOSE_DIR, NOSE_ROOT_BIN, DEFAULT_PROJECT } from "./config"
+import { NOSE_ICON, NOSE_BIN, NOSE_DATA, NOSE_DIR, NOSE_ROOT_BIN, BUN_BIN, DEFAULT_PROJECT } from "./config"
 import { transpile, isFile, tilde, isDir } from "./utils"
-import { serveApp, apps, initWebapps } from "./webapp"
+import { serveApp, apps, initWebapps } from "./webapp/server"
 import { commands, commandPath, loadCommandModule } from "./commands"
 import { runCommandFn } from "./shell"
 import { send, addWebsocket, removeWebsocket, closeWebsockets } from "./websocket"
@@ -241,6 +241,7 @@ initWebapps()
 initSneakers()
 
 console.log(color.cyan(NOSE_ICON))
+console.log(color.blue("      BUN_BIN:"), color.yellow(tilde(BUN_BIN)))
 console.log(color.blue("     NOSE_BIN:"), color.yellow(tilde(NOSE_BIN)))
 console.log(color.blue("    NOSE_DATA:"), color.yellow(tilde(NOSE_DATA)))
 console.log(color.blue("     NOSE_DIR:"), color.yellow(tilde(NOSE_DIR)))

src/webapp/server.ts

@@ -5,36 +5,34 @@ import type { Child } from "hono/jsx"
 import { type Context, Hono } from "hono"
 import { join } from "path"
 import { readdirSync, watch } from "fs"
-import { sendAll } from "./websocket"
-import { expectDir } from "./utils"
-import { NOSE_DIR } from "./config"
-import { isFile, isDir, mtimeEpoch } from "./utils"
-import { importUrl } from "./shared/utils"
+import { sendAll } from "../websocket"
+import { expectDir } from "../utils"
+import { NOSE_DIR, BUN_BIN } from "../config"
+import { isFile, isDir } from "../utils"
 
 export type Handler = (r: Context) => string | Child | Response | Promise<Response>
 export type App = Hono | Handler
 
+const processes = new Map<string, { port: string, proc: ReturnType<typeof Bun.spawn> }>()
+
 export function initWebapps() {
     startWatcher()
 }
 
 export async function serveApp(c: Context, subdomain: string): Promise<Response> {
-    const app = await findApp(subdomain)
-    const path = appDir(subdomain)
+    const port = await startApp(subdomain)
+    if (!port) return c.text(`App not found: ${subdomain}`, 404)
 
-    if (!path) return c.text(`App not found: ${subdomain}`, 404)
+    const staticPath = join(appDir(subdomain)!, "pub", c.req.path === "/" ? "/index.html" : c.req.path)
+    if (isFile(staticPath)) return serveStatic(staticPath)
 
-    const staticPath = join(path, "pub", c.req.path === "/" ? "/index.html" : c.req.path)
+    const res = await fetch(`http://localhost:${port}${c.req.path}`, {
+        method: c.req.method,
+        headers: c.req.raw.headers,
+        body: c.req.raw.body,
+    })
 
-    if (isFile(staticPath))
-        return serveStatic(staticPath)
-
-    if (!app) return c.text(`App not found: ${subdomain}`, 404)
-
-    if (app instanceof Hono)
-        return app.fetch(c.req.raw)
-    else
-        return toResponse(await app(c))
+    return new Response(res.body, { status: res.status, headers: res.headers })
 }
 
 export function apps(): string[] {
@@ -58,24 +56,23 @@ export function appDir(name: string): string | undefined {
         return join(NOSE_DIR, name)
 }
 
-async function findApp(name: string): Promise<App | undefined> {
-    const paths = [
-        join(name, "index.ts"),
-        join(name, "index.tsx")
-    ]
+async function startApp(name: string): Promise<string | undefined> {
+    const existing = processes.get(name)
+    if (existing) return existing.port
 
-    for (const path of paths) {
-        const app = await loadApp(join(NOSE_DIR, path))
-        if (app) return app
-    }
-}
 
-async function loadApp(path: string): Promise<App | undefined> {
-    if (!await Bun.file(path).exists()) return
+    const port = String(4000 + processes.size)
+    const proc = Bun.spawn({
+        cmd: [BUN_BIN, "run", "src/webapp/worker.ts", name],
+        env: { PORT: port },
+        stdout: "inherit",
+        stderr: "inherit",
+    })
 
-    const mod = await importUrl(path, await mtimeEpoch(path))
-    if (mod?.default)
-        return mod.default as App
+    processes.set(name, { port, proc })
+    proc.exited.then(() => processes.delete(name))
+
+    return port
 }
 
 export async function toResponse(source: string | Child | Response): Promise<Response> {
@@ -100,6 +97,14 @@ function serveStatic(path: string): Response {
     })
 }
 
+async function shutdown() {
+    for (const [name, { port, proc }] of processes) {
+        console.log(`Shutting down ${name}`)
+        try { proc.kill() } catch { }
+    }
+    process.exit(0)
+}
+
 let wwwWatcher
 function startWatcher() {
     if (!expectDir(NOSE_DIR)) return
@@ -110,4 +115,7 @@ function startWatcher() {
         if (/^.+\/index\.tsx?$/.test(filename))
             sendAll({ type: "apps", data: apps() })
     })
-}
+}
+
+process.on("SIGINT", shutdown)
+process.on("SIGTERM", shutdown)

src/webapp/utils.ts

@@ -0,0 +1,9 @@
+import { join } from "path"
+import { NOSE_DIR } from "../config"
+
+export async function appPath(appName: string): Promise<string | undefined> {
+    const ts = join(NOSE_DIR, appName, "index.ts")
+    const tsx = join(NOSE_DIR, appName, "index.tsx")
+
+    return [ts, tsx].find(async file => await Bun.file(file).exists())
+}

src/webapp/worker.ts

@@ -0,0 +1,26 @@
+////
+// This is the child process that runs a single webapp.
+
+import { Hono } from "hono"
+import { appPath } from "./utils"
+
+const appName = Bun.argv[2]
+if (!appName) {
+    console.log("usage: bun run webapp-worker <app-name>")
+    process.exit(1)
+}
+
+const path = await appPath(appName)
+if (!path) throw `Can't find app: ${appName}`
+
+const mod = await import(path)
+
+const handler = mod.default
+if (typeof handler !== "function") throw `no default export in ${appName}`
+
+const app = new Hono()
+app.all("*", handler)
+const port = Number(process.env.PORT || 4000)
+Bun.serve({ port, fetch: app.fetch })
+
+console.log(`[child:${appName}] listening on localhost:${port}`)