polish structure, update requirements

[hublib] / hub / app.py

diff --git a/hub/app.py b/hub/app.py
index 24212d0972581d1e6e7bef054074c80f8b229c6b..22a7cd481a6db610c1f1417fe2abd093c6887d78 100644 (file)
--- a/hub/app.py
+++ b/hub/app.py
@@ -1,16 +1,103 @@
+import socket
+import sys
 from argparse import ArgumentParser
+from base64 import urlsafe_b64encode
+from hashlib import pbkdf2_hmac
+from itertools import chain
+from pathlib import Path
+from secrets import token_urlsafe
+from subprocess import run
+from traceback import print_exception
+from urllib.parse import urlunsplit
 
-from falcon.asgi import App
+from falcon.asgi import App as FalconApp
 from falcon.constants import MEDIA_HTML
+from jinja2 import Environment, FileSystemLoader, select_autoescape
+from uvicorn import Config, Server
 
-from .cryptresource import CryptResource
+from .hubapp import HubApp, RootApp
 
 
-def get_app():
-    app = App(media_type=MEDIA_HTML)
+class App(FalconApp):
+    def __init__(self, secret, **kwargs):
+        kwargs.setdefault("media_type", MEDIA_HTML)
+        super().__init__(**kwargs)
+        self.base_dir = Path(__file__).parents[1] / "webroot"
+        self.env = Environment(
+            loader=FileSystemLoader(self.base_dir),
+            autoescape=select_autoescape(),
+            extensions=["hub.utils.StaticTag"],
+        )
+        self.secret = secret or token_urlsafe(64)
+        self.hubapps = {}
+        RootApp(self, self.base_dir)
+        for base_dir in self.base_dir.iterdir():
+            if not base_dir.is_dir() or HubApp.is_ignored_filename(base_dir):
+                continue
+            HubApp(self, base_dir)
+        self.add_error_handler(Exception, self.print_exception)
+
+    def scramble(self, value):
+        if isinstance(value, str):
+            value = value.encode()
+        secret = self.secret
+        if isinstance(secret, str):
+            secret = secret.encode()
+        return urlsafe_b64encode(
+            pbkdf2_hmac("sha512", value, secret, 221100)
+        ).rstrip(b"=").decode("ascii")
+
+    async def print_exception(self, req, resp, ex, params):
+        print_exception(*sys.exc_info())
+
+
+class HubServer(Server):
+    def __init__(self, *args, browser, **kwargs):
+        self.browser = browser
+        super().__init__(*args, **kwargs)
+
+    async def startup(self, sockets: list[socket.socket] | None = None) -> None:
+        await super().startup(sockets)
+        config = self.config
+        protocol_name = "https" if config.ssl else "http"
+        host = "0.0.0.0" if config.host is None else config.host
+        if ":" in host:
+            # It's an IPv6 address.
+            host = f"[{host.rstrip(']').lstrip('[')}]"
+
+        port = config.port
+        if port == 0:
+            try:
+                port = next(
+                    chain.from_iterable(
+                        (server.sockets for server in getattr(self, "servers", ()))
+                    )
+                ).getsockname()[1]
+            except StopIteration:
+                pass
+        if {"http": 80, "https": 443}[protocol_name] != port:
+            host = f"{host}:{port}"
+        app = config.loaded_app.app
+        print("Secret:", app.secret)
+        for key, value in app.hubapps["root"].files_per_uris.items():
+            if Path(value.path.name).stem == "index.html":
+                url = urlunsplit((protocol_name, host, key, "", ""))
+                print("URL:", url)
+                if self.browser:
+                    run([self.browser, url])
+
+
+app: App
+
+
+async def main():
+    global app
     ap = ArgumentParser()
     ap.add_argument("--secret")
+    ap.add_argument("--browser", default="firefox")
     args = ap.parse_args()
-    cr = CryptResource(args.secret)
-    cr.register_on(app)
-    return app
+    app = App(args.secret)
+    config = Config("hub.app:app", port=5000, log_level="info")
+    config.setup_event_loop()
+    hs = HubServer(config, browser=args.browser)
+    await hs.serve()