More robust server startup, startup logo and info screen, renewed devmode script.
This commit is contained in:
Leo Vasanko
Regular → Executable
+58
-31
@@ -1,16 +1,19 @@
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#!/usr/bin/env python3
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"""Development server script for Paskia.
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#!/usr/bin/env -S uv run
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"""Run Vite development server for frontend and FastAPI backend with auto-reload.
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This script is only available when running from the git repository source,
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not from the installed package. It starts both the Vite frontend dev server
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and the FastAPI backend with auto-reload enabled.
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Usage:
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python scripts/dev.py [options...]
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uv run scripts/dev.py [host:port] [options...]
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All options are forwarded to `paskia serve`.
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The optional host:port argument sets where the Vite frontend listens.
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All other options are forwarded to `paskia serve`.
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Backend always listens on localhost:4402.
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"""
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import argparse
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import atexit
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import os
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import shutil
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@@ -21,14 +24,10 @@ from pathlib import Path
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from sys import stderr
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from threading import Thread
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# Set dev mode environment variable BEFORE importing anything from paskia
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os.environ["PASKIA_DEVMODE"] = "1"
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from paskia.fastapi.__main__ import parse_endpoint
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# Ensure the package is importable when running from repo root
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sys.path.insert(0, str(Path(__file__).parent.parent))
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DEFAULT_DEV_PORT = 4402
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DEV_SERVER = "http://localhost:4403"
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DEFAULT_VITE_PORT = 4403 # overrides by CLI option
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BACKEND_PORT = 4402 # hardcoded, also in vite.config.ts
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NO_FRONTEND_TOOL = """\
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┃ ⚠️ deno, npm or bunx needed to run the frontend server.
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@@ -48,17 +47,19 @@ BUN_BUG = """\
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NO_FRONTEND = """\
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┃
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┃ Note: only static build of the frontend is served at localhost:4402.
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┃ The page will not update with frontend code changes.
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┃ The backend will still try reaching Vite at {vite_url}
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┃ for various frontend assets, so make sure to start it manually.
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"""
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def run_vite():
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def run_vite(vite_url: str, vite_host: str | None, vite_port: int):
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"""Spawn the frontend dev server (deno, npm, or bunx) as a background process."""
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devpath = Path(__file__).parent.parent / "frontend"
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if not (devpath / "package.json").exists():
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stderr.write(f"┃ ⚠️ Frontend source not found at {devpath}\n")
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stderr.write(NO_FRONTEND)
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stderr.write(
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f"┃ ⚠️ Frontend source not found at {devpath}\n"
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+ NO_FRONTEND.format(vite_url=vite_url)
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)
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return
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options = [
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@@ -74,24 +75,31 @@ def run_vite():
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tool_name = option[0]
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break
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# Add Vite CLI args for host/port
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vite_args = ["--port", str(vite_port)]
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if vite_host:
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vite_args.extend(["--host", vite_host])
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vite_process = None
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def start_vite():
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nonlocal vite_process
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if cmd is None:
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stderr.write(NO_FRONTEND_TOOL)
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stderr.write(NO_FRONTEND)
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stderr.write(NO_FRONTEND_TOOL + NO_FRONTEND.format(vite_url=vite_url))
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return
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assert tool_name is not None
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try:
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if tool_name == "bunx":
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stderr.write(BUN_BUG)
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stderr.write(f">>> {' '.join([tool_name, *cmd[1:]])}\n")
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vite_process = subprocess.Popen(cmd, cwd=str(devpath), shell=False)
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full_cmd = cmd + vite_args
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stderr.write(f">>> {' '.join([tool_name, *full_cmd[1:]])}\n")
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vite_process = subprocess.Popen(full_cmd, cwd=str(devpath), shell=False)
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except Exception as e:
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stderr.write(f"┃ ⚠️ Vite couldn't start: {e}\n")
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stderr.write(NO_FRONTEND)
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stderr.write(
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f"┃ ⚠️ Vite couldn't start: {e}\n"
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+ NO_FRONTEND.format(vite_url=vite_url)
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)
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def cleanup():
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if vite_process:
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@@ -108,20 +116,39 @@ def run_vite():
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def main():
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# Start Vite dev server first
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run_vite()
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# Parse optional hostport argument for Vite frontend
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parser = argparse.ArgumentParser(add_help=False)
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parser.add_argument("hostport", nargs="?", default=None)
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args, remaining = parser.parse_known_args()
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# Set default origin for Vite if not specified
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if "--origin" not in sys.argv:
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os.environ.setdefault("PASKIA_ORIGIN", DEV_SERVER)
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# Parse Vite endpoint
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vite_host, vite_port, vite_uds, all_ifaces = parse_endpoint(
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args.hostport, DEFAULT_VITE_PORT
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)
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# Build argv for the main CLI
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# Dev mode always listens on localhost:4402 (security: prevents public exposure)
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# User args come after, allowing overrides of other options
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sys.argv = ["paskia", "serve", f"localhost:{DEFAULT_DEV_PORT}"] + sys.argv[1:]
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if vite_uds:
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raise SystemExit("┃ ⚠️ Unix sockets are not supported for Vite frontend")
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# Handle all-interfaces case (:port syntax)
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# Vite uses 0.0.0.0 to listen on all interfaces (IPv4 only, sufficient for dev)
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if all_ifaces:
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vite_host = "0.0.0.0"
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# Build Vite URL for PASKIA_DEVMODE (always use localhost for URL)
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vite_url = f"http://localhost:{vite_port}"
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# Start Vite dev server
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run_vite(vite_url, vite_host, vite_port)
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# Set dev mode with Vite URL
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os.environ["PASKIA_DEVMODE"] = vite_url
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# Import CLI after environment is set up
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from paskia.fastapi.__main__ import main as cli_main
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# Build argv for the main CLI in Dev mode
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# Backend always listens on localhost only (Vite proxies API requests)
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sys.argv = ["paskia", "serve", f"localhost:{BACKEND_PORT}"] + remaining
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cli_main()
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