Merge pull request #130 from Michele-Alberti/development

🛎️ Add ready/disconnect notification

dlunch/__main__.py

@@ -37,6 +37,11 @@ def run_app(config: DictConfig):
     )
 
     log.info("set panel config")
+    # Set notifications options
+    pn.extension(
+        disconnect_notification=config.panel.notifications.disconnect_notification,
+        ready_notification=config.panel.notifications.ready_notification,
+    )
     # Configurations
     pn.config.nthreads = config.panel.nthreads
     pn.config.notifications = True
@@ -88,6 +93,10 @@ def run_app(config: DictConfig):
             "missing config.server.auth_provider, auth_object dict left empty"
         )
 
+    # Set session begin/end logs
+    pn.state.on_session_created(lambda ctx: log.debug("session created"))
+    pn.state.on_session_destroyed(lambda ctx: log.debug("session closed"))
+
     pn.serve(
         panels=pages, **hydra.utils.instantiate(config.server), **auth_object
     )

dlunch/cli.py

@@ -4,7 +4,7 @@
 import pandas as pd
 
 # Import database object
-from .models import create_database, create_engine, SCHEMA, Data
+from .models import create_database, create_engine, SCHEMA, Data, metadata_obj
 
 # Import functions from core
 from .core import clean_tables as clean_tables_func
@@ -31,9 +31,7 @@
 )
 @click.pass_context
 def cli(ctx, hydra_overrides: tuple | None):
-    """Command line interface for creating a local sqlite database.
-    To be used only for development purposes.
-    """
+    """Command line interface for managing Data-Lunch database and users."""
     # global initialization
     initialize(
         config_path="conf", job_name="data_lunch_cli", version_base="1.3"
@@ -230,8 +228,7 @@ def delete_table(obj, name):
     # Drop table
     try:
         engine = create_engine(obj["config"])
-        command = f"DROP TABLE {name};"
-        engine.execute(command)
+        metadata_obj.tables[name].drop(engine)
         click.secho(f"Table '{name}' deleted", fg="green")
     except Exception as e:
         # Generic error

dlunch/conf/panel/default.yaml

@@ -64,6 +64,11 @@ guest_types: # Check also guests icons in panel/gui
 # NOTIFICATIONS
 notifications:
   duration: 0
+  # Notification on first connection or on disconnection (set to ""
+  # to deactivate)
+  disconnect_notification: |-
+    Connection lost<br>Please reload the page
+  ready_notification: ""
 # Drop unused menus entries in orders tables (drop unused if true)
 drop_unused_menu_items: true
 

dlunch/conf/server/common.yaml

@@ -13,4 +13,8 @@ static_dirs:
 compress_response: true
 cookie_secret: ${oc.env:DATA_LUNCH_COOKIE_SECRET} # Secure cookies are required (this vakue can't be null)
 enable_xsrf_cookies: true
-liveness: health
+liveness: health
+keep_alive_milliseconds: 29000 # Default 37000
+check_unused_sessions_milliseconds: 17000 # Default 17000
+unused_session_lifetime_milliseconds: 15000 # Default 15000
+session_token_expiration: 300 # Default 300