Bokeh Server different data for different users.

Sanjaya_Prakash · April 11, 2018, 2:27pm

Hi,

I have created bokeh application. This bokeh application is reading .xlsx file to get input data(Pandas DataFrame) and forming the interactive graph.

For each user .xlsx file will be different.

With the same server bokeh application should give different data in the graph for different users.

Please help me regarding this.

Joris_Nettelstroth · April 12, 2018, 6:40am

Hi there,

your question is not very specific, so it is very difficult to provide useful help.

I guess what might help you is the ability to upload a .xlsx file from the user’s browser to the Bokeh server.

Check this thread for information on how to do that:

https://groups.google.com/a/continuum.io/forum/#!searchin/bokeh/upload$20file/bokeh/EtuMtJI39qQ/4o2x2pRiBAAJ

If you are trying to upload larger files (about 10 MB or more), the following issue becomes important:

github.com/bokeh/bokeh

Connection errors when sending large amounts of data to browser via a bokeh server

opened 09:37AM - 05 Jan 18 UTC

closed 01:06AM - 05 Jun 18 UTC

Laurens-T

type: task reso: completed tag: component: server

Recently I came across a problem with sending lots of data to a bokeh server, be…tween 20 - 50 MB. The command I used was ``` bokeh serve data_visualisation --show --args -i path_to_large_file ``` What would happen is that my plot would render, and then almost instantly a timeout would occur so no communication between the browser and server was possible: ``` 2018-01-05 10:19:58,280 200 GET /data_visualisation (::1) 9227.38ms 2018-01-05 10:19:58,455 101 GET /data_visualisation/ws?bokeh-protocol-version=1.0&bokeh-session-id=jbQmzoBZbYDBDUdi5Ix6QShbAJtAMGPhmKvC1SWjOuwA (::1) 0.87ms 2018-01-05 10:19:58,455 WebSocket connection opened 2018-01-05 10:19:58,456 ServerConnection created 2018-01-05 10:21:28,512 WebSocket connection closed: code=None, reason=None ``` In the browser console, the following errors where shown: ``` [bokeh] Lost websocket 0 connection, 1006 () connection.js:221 [bokeh] Websocket connection 0 disconnected, will not attempt to reconnect connection.js:105 ``` The problem was solved by editing tornado.py by changing the rule on line 221 ```super(BokehTornado, self).__init__(all_patterns)``` to ``` super(BokehTornado, self).__init__(all_patterns, websocket_max_message_size=50 * 1024 * 1024) ``` By default, the maximum socket message size is 10MiB for the used version of Tornado, and would disconnect for this reason. A more meaningful error message or the possibility to change this value in bokeh would be appreciated. #### Software version info bokeh==0.12.13 Tornado==4.5.2 python==3.6.3 MacOS High Sierra (10.13.2) Any browser (Chrome (63.0.3239.84) / Safari / Firefox)

Cheers

···

Am Mittwoch, 11. April 2018 16:27:54 UTC+2 schrieb Sanjaya Prakash:

Hi,

I have created bokeh application. This bokeh application is reading .xlsx file to get input data(Pandas DataFrame) and forming the interactive graph.

For each user .xlsx file will be different.

With the same server bokeh application should give different data in the graph for different users.

Please help me regarding this.