336 lines
10 KiB
JavaScript
336 lines
10 KiB
JavaScript
import express from "express";
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import { spawn } from "node:child_process";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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import fs from "node:fs";
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import crypto from "node:crypto";
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = path.dirname(__filename);
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const repoRoot = path.resolve(__dirname, "..");
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const outputsDir = path.join(repoRoot, "outputs");
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fs.mkdirSync(outputsDir, { recursive: true });
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const app = express();
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app.use(express.json({ limit: "2mb" }));
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app.use(
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"/api/static",
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express.static(outputsDir, {
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fallthrough: true,
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setHeaders: (res) => {
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// Important: avoid stale video preview.
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res.setHeader("Cache-Control", "no-cache, no-transform");
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},
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})
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);
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app.use(express.static(path.join(__dirname, "public")));
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app.get("/api/health", (_req, res) => {
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res.setHeader("Cache-Control", "no-cache");
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res.status(200).json({ ok: true });
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});
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app.get("/api/tasks/:task_id", (req, res) => {
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const taskId = String(req.params.task_id || "").trim();
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if (!taskId) return res.status(400).json({ error: "missing task_id" });
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const p = path.join(outputsDir, taskId, "task.json");
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if (!fs.existsSync(p)) return res.status(404).json({ error: "task not found", task_id: taskId });
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try {
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const raw = fs.readFileSync(p, "utf8");
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const data = JSON.parse(raw);
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return res.json(data);
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} catch (e) {
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return res.status(500).json({ error: "failed to read task", task_id: taskId, detail: String(e) });
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}
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});
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function sseHeaders(res) {
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res.setHeader("Content-Type", "text/event-stream; charset=utf-8");
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res.setHeader("Cache-Control", "no-cache, no-transform");
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res.setHeader("Connection", "keep-alive");
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// Nginx proxies may buffer unless disabled; harmless in dev.
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res.setHeader("X-Accel-Buffering", "no");
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}
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function sseSend(res, event, data) {
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if (event) res.write(`event: ${event}\n`);
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const lines = String(data).split(/\r?\n/);
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for (const line of lines) res.write(`data: ${line}\n`);
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res.write("\n");
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}
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function newTaskId() {
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return crypto.randomUUID();
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}
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function taskDir(taskId) {
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return path.join(outputsDir, taskId);
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}
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function ensureTaskDir(taskId) {
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const dir = taskDir(taskId);
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fs.mkdirSync(dir, { recursive: true });
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return dir;
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}
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function spawnPythonStep({ step, prompt, configPath, mock, globalStyle, character, taskId, sceneIndex }) {
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const py = process.env.PYTHON_BIN || "python3.10";
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const args = [
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"-m",
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"engine.main",
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"--prompt",
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prompt,
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"--config",
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configPath,
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"--step",
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step,
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"--task-id",
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taskId,
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];
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if (sceneIndex) args.push("--scene-index", String(sceneIndex));
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if (globalStyle) args.push("--global-style", globalStyle);
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if (character) args.push("--character", character);
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if (mock) args.push("--mock");
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return spawn(py, args, { cwd: repoRoot, env: process.env, stdio: ["pipe", "pipe", "pipe"] });
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}
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app.get("/api/script", (req, res) => {
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const prompt = String(req.query.prompt || "").trim();
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const mock = String(req.query.mock || "1") === "1";
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const globalStyle = String(req.query.global_style || "").trim();
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const character = String(req.query.character || "").trim();
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const configPath = String(req.query.config || "./configs/config.yaml");
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if (!prompt) {
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res.status(400).json({ error: "missing prompt" });
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return;
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}
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const taskId = newTaskId();
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ensureTaskDir(taskId);
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sseHeaders(res);
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sseSend(res, "task", JSON.stringify({ task_id: taskId }));
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sseSend(res, "status", "starting");
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const child = spawnPythonStep({
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step: "script",
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prompt,
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configPath,
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mock,
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globalStyle,
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character,
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taskId,
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});
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let buf = "";
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child.stdout.setEncoding("utf8");
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child.stdout.on("data", (chunk) => {
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buf += chunk;
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const parts = buf.split(/\r?\n/);
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buf = parts.pop() || "";
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for (const line of parts) {
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if (!line) continue;
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if (line.startsWith("SCENE_JSON ")) sseSend(res, "scene", line.slice("SCENE_JSON ".length));
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else if (line.startsWith("PROG ")) sseSend(res, "prog", line.slice("PROG ".length));
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else sseSend(res, "line", line);
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}
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});
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child.stderr.setEncoding("utf8");
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child.stderr.on("data", (chunk) => {
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sseSend(res, "error", chunk);
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});
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req.on("close", () => {
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child.kill("SIGTERM");
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});
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child.on("exit", (code) => {
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if (buf.trim()) sseSend(res, "line", buf.trim());
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sseSend(res, "done", String(code != null ? code : 0));
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res.end();
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});
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});
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app.post("/api/refine", (req, res) => {
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const prompt = String((req.body && req.body.prompt) || "").trim();
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const sceneIndex = Number((req.body && req.body.scene_index) || 1);
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const scenes = req.body && req.body.scenes;
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const scene = req.body && req.body.scene;
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const mock = Boolean((req.body && req.body.mock) != null ? req.body.mock : true);
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const globalStyle = String((req.body && req.body.global_style) || "").trim();
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const character = String((req.body && req.body.character) || "").trim();
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const configPath = String((req.body && req.body.config) || "./configs/config.yaml");
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const taskId = String((req.body && req.body.task_id) || "").trim() || newTaskId();
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if (!prompt) return res.status(400).json({ error: "missing prompt" });
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if (!Number.isFinite(sceneIndex) || sceneIndex < 1) return res.status(400).json({ error: "bad scene_index" });
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if (!Array.isArray(scenes) && (!scene || typeof scene !== "object")) {
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return res.status(400).json({ error: "missing scene or scenes[]" });
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}
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ensureTaskDir(taskId);
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const child = spawnPythonStep({
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step: "refine",
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prompt,
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configPath,
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mock,
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globalStyle,
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character,
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taskId,
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sceneIndex,
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});
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if (Array.isArray(scenes)) {
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child.stdin.end(JSON.stringify({ scenes }));
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} else {
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child.stdin.end(JSON.stringify({ scene }));
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}
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let out = "";
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let err = "";
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child.stdout.setEncoding("utf8");
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child.stderr.setEncoding("utf8");
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child.stdout.on("data", (c) => (out += c));
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child.stderr.on("data", (c) => (err += c));
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child.on("exit", (code) => {
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if (code !== 0) return res.status(500).json({ error: "python failed", stderr: err, stdout: out });
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const line = out
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.split(/\r?\n/)
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.map((s) => s.trim())
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.find((s) => s.startsWith("SCENE_JSON "));
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if (!line) return res.status(500).json({ error: "no SCENE_JSON", stderr: err, stdout: out });
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const payload = JSON.parse(line.slice("SCENE_JSON ".length));
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return res.json({ task_id: taskId, scene: payload, stderr: err });
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});
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});
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let isBusy = false;
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app.post("/api/render", (req, res) => {
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const prompt = String((req.body && req.body.prompt) || "").trim();
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const scenes = req.body && req.body.scenes;
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const mock = Boolean((req.body && req.body.mock) != null ? req.body.mock : false);
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const globalStyle = String((req.body && req.body.global_style) || "").trim();
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const character = String((req.body && req.body.character) || "").trim();
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const configPath = String((req.body && req.body.config) || "./configs/config.yaml");
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const taskId = String((req.body && req.body.task_id) || "").trim() || newTaskId();
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if (!prompt) return res.status(400).json({ error: "missing prompt" });
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if (!Array.isArray(scenes)) return res.status(400).json({ error: "missing scenes[]" });
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ensureTaskDir(taskId);
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if (isBusy) {
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return res.status(429).json({ error: "busy", msg: "GPU is busy, try later" });
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}
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isBusy = true;
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sseHeaders(res);
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sseSend(res, "task", JSON.stringify({ task_id: taskId }));
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sseSend(res, "status", "render_start");
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const child = spawnPythonStep({
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step: "render",
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prompt,
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configPath,
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mock,
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globalStyle,
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character,
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taskId,
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});
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child.stdin.end(JSON.stringify({ scenes }));
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let buf = "";
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child.stdout.setEncoding("utf8");
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child.stderr.setEncoding("utf8");
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child.stdout.on("data", (chunk) => {
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buf += chunk;
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const parts = buf.split(/\r?\n/);
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buf = parts.pop() || "";
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for (const line of parts) {
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if (!line) continue;
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if (line.startsWith("PROG ")) sseSend(res, "prog", line.slice("PROG ".length));
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else if (line.startsWith("PROG_SHOT ")) {
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const rest = line.slice("PROG_SHOT ".length).trim();
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const firstSpace = rest.indexOf(" ");
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if (firstSpace > 0) {
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const shotId = rest.slice(0, firstSpace).trim();
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const status = rest.slice(firstSpace + 1).trim();
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sseSend(res, "shot_progress", JSON.stringify({ shot_id: shotId, status }));
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} else {
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sseSend(res, "line", line);
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}
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}
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else if (line.startsWith("RENDER_DONE ")) sseSend(res, "done", line.slice("RENDER_DONE ".length));
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else sseSend(res, "line", line);
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}
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});
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child.stderr.on("data", (chunk) => {
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sseSend(res, "error", chunk);
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});
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req.on("close", () => {
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child.kill("SIGTERM");
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});
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child.on("exit", (code) => {
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isBusy = false;
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if (buf.trim()) sseSend(res, "line", buf.trim());
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if (code !== 0) sseSend(res, "error", `[ERROR] python exit_code=${code}`);
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res.end();
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});
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});
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async function runSelfCheck() {
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const py = process.env.PYTHON_BIN || "python3.10";
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const checks = [
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{ name: "check_comfy", args: ["scripts/check_comfy.py"] },
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{ name: "inspect_comfy_node", args: ["scripts/inspect_comfy_node.py"] },
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];
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for (const c of checks) {
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const deadline = Date.now() + 90_000;
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let lastErr = "";
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while (Date.now() < deadline) {
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try {
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await new Promise((resolve, reject) => {
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const child = spawn(py, c.args, { cwd: repoRoot, env: process.env, stdio: ["ignore", "pipe", "pipe"] });
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let out = "";
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let err = "";
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child.stdout.setEncoding("utf8");
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child.stderr.setEncoding("utf8");
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child.stdout.on("data", (d) => (out += d));
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child.stderr.on("data", (d) => (err += d));
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child.on("exit", (code) => {
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if (code === 0) return resolve(true);
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reject(new Error(`${c.name} failed (code=${code})\n${err || out}`));
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});
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});
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lastErr = "";
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break;
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} catch (e) {
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lastErr = String(e);
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await new Promise((r) => setTimeout(r, 2000));
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}
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}
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if (lastErr) {
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throw new Error(lastErr);
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}
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}
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}
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const port = Number(process.env.PORT || 3000);
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(async () => {
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try {
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await runSelfCheck();
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app.listen(port, () => {
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console.log(`[server] http://127.0.0.1:${port}`);
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});
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} catch (e) {
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console.error(String(e));
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process.exit(1);
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}
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})();
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