From 9e2c3de52027c9099b61a360f01cf1972325637d Mon Sep 17 00:00:00 2001
From: Julian <julian@edyoucated.org>
Date: Mon, 11 Mar 2024 22:59:48 +0100
Subject: [PATCH] changed method to find jupyterlab base url for dash app
---
app/app.py | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/app/app.py b/app/app.py
index 604849e..b43ae3a 100644
--- a/app/app.py
+++ b/app/app.py
@@ -4,13 +4,25 @@ sys.path.append("/home/jovyan/")
import argparse
import logging
+from urllib.parse import urlparse, urljoin
+
from dash import Dash
+from jupyter_server.serverapp import list_running_servers
+
from layout import layout
from callbacks import register_callbacks
logging.basicConfig(level=logging.INFO)
+# weird trick to find base_url for the jupyterlab
+def find_jupyterlab_base_url():
+ servers = list_running_servers()
+ for server in servers:
+ if server["port"] == 8888:
+ return server['url']
+ return None
+
# get the correct port from proxy
parser = argparse.ArgumentParser()
@@ -23,10 +35,19 @@ if not port:
else:
logging.debug(f"Dash app running on port {port}.")
+
+base_url = find_jupyterlab_base_url()
+if base_url is None:
+ raise ValueError("Base URL of Jupyterlab could not be detected.")
+logging.debug(f"Base URL: {base_url}")
+
+proxy_base_path = urlparse(urljoin(base_url + "/", f"proxy/{port}/")).path
+logging.debug(f"Proxy base path: {proxy_base_path}")
+
# define Dash app
app = Dash(
name=__name__,
- requests_pathname_prefix="/Dash/"
+ requests_pathname_prefix=proxy_base_path
)
# define layout
@@ -39,6 +60,6 @@ register_callbacks(app=app)
app.run(
jupyter_mode="jupyterlab",
port=port,
- host="localhost",
+ host="0.0.0.0",
debug=True
)
--
GitLab