Added: NbGrader as external service

jupyterhub/nbgrader_config.py

@@ -1,30 +1,44 @@
-# /srv/nbgrader/nbgrader_config.py
+import os
+
 c = get_config()
 
-# 1. Course Configuration
-c.CourseDirectory.course_id = "intro-to-python"  # Change to your course name
-c.CourseDirectory.root = '/srv/nbgrader/courses'
+# Database configuration - use the same PostgreSQL as JupyterHub
+p_user = os.environ.get("POSTGRES_USER", "")
+p_pass = os.environ.get("POSTGRES_PASSWORD", "")
+p_host = os.environ.get("POSTGRES_HOST", "postgres")
+p_db = os.environ.get("POSTGRES_DB", "jupyterhub")
 
-# 2. Exchange Directory (for submitting/collecting assignments)
-c.Exchange.root = '/srv/nbgrader/exchange'
-c.Exchange.path_includes_course = True
+# NBgrader database URL
+c.NbGrader.db_url = f"postgresql://{p_user}:{p_pass}@{p_host}:5432/{p_db}"
 
-# 3. JupyterHub Integration
-#c.NbGrader.hub_url = 'http://jupyterhub:8081/hub/api'
-#c.NbGrader.hubapi_token = 'your-hub-token'  # Generate with: openssl rand -hex 32
+# Course configuration
+course_id = os.environ.get("NBGRADER_COURSE_ID", "default_course")
+c.CourseDirectory.course_id = course_id
+c.CourseDirectory.root = "/srv/nbgrader"
 
-# 4. Database Configuration
-c.StudentAssignmentNotebook.database_url = 'sqlite:////srv/nbgrader/nbgrader.sqlite'
+# Exchange directory configuration
+exchange_dir = os.environ.get("NBGRADER_EXCHANGE_DIRECTORY", "/srv/nbgrader/exchange")
+c.Exchange.root = exchange_dir
+c.Exchange.course_id = course_id
 
-# 5. Assignment Policies
-c.ExecutePreprocessor.timeout = 300  # 5 minutes timeout per cell
-c.ClearSolutions.code_stub = "# YOUR CODE HERE"
-c.ClearSolutions.text_stub = "YOUR ANSWER HERE"
+# Authentication
+c.FormgradeApp.authenticator_plugin_class = "nbgrader.auth.JupyterHubAuthPlugin"
 
-# 6. Formgrader UI Settings
+# Logging
+c.Application.log_level = "INFO"
+
+# Formgrader settings
+c.FormgradeApp.ip = "0.0.0.0"
 c.FormgradeApp.port = 9999
-c.FormgradeApp.authenticator_class = 'nbgrader.auth.hubauth.HubAuth'
-c.FormgradeApp.ip = '0.0.0.0'
+c.FormgradeApp.base_url = "/jupyter/services/nbgrader-formgrader/"
 
-# 7. Permissions
-c.CourseDirectory.groupshared = True
+# Enable tornado debug mode for development
+# c.FormgradeApp.tornado_settings = {'debug': True}
+
+# Assignment settings
+c.AssignmentListApp.assignment_dir = "/home/jovyan/assignments"
+c.AssignmentListApp.exchange_directory = exchange_dir
+
+# Grader settings
+c.AutogradeApp.force = True
+c.GenerateAssignmentApp.force = True