Refactor with its own entry point and startup script cista, instead of running via sanic. Config file handling and Droppy updates. HTTP redirection/acme server added.

cista/serve.py

@@ -0,0 +1,37 @@
+import os
+import re
+from pathlib import Path
+
+from sanic import Sanic
+
+from . import config
+
+
+def run(dev=False):
+    """Run Sanic main process that spawns worker processes to serve HTTP requests."""
+    from .app import app
+    url, opts = parse_listen(config.config.listen)
+    # Silence Sanic's warning about running in production rather than debug
+    os.environ["SANIC_IGNORE_PRODUCTION_WARNING"] = "1"
+    if opts.get("ssl"):
+        # Run plain HTTP redirect/acme server on port 80
+        from . import httpredir
+        httpredir.app.prepare(port=80, motd=False)
+    app.prepare(**opts, motd=False, dev=dev, auto_reload=dev)
+    Sanic.serve()
+
+def parse_listen(listen):
+    if listen.startswith("/"):
+        unix = Path(listen).resolve()
+        if not unix.parent.exists():
+            raise ValueError(f"Directory for unix socket does not exist: {unix.parent}/")
+        return "http://localhost", {"unix": unix}
+    elif re.fullmatch(r"(\w+(-\w+)*\.)+\w{2,}", listen, re.UNICODE):
+        return f"https://{listen}", {"host": listen, "ssl": True}
+    else:
+        try:
+            addr, _port = listen.split(":", 1)
+            port = int(_port)
+        except Exception:
+            raise ValueError(f"Invalid listen address: {listen}")
+        return f"http://localhost:{port}", {"host": addr, "port": port}