[codeface] Re: shiny server

  • From: peguet <peguet@xxxxxxxxxxxxxx>
  • To: <codeface@xxxxxxxxxxxxx>
  • Date: Sat, 07 Mar 2015 18:18:25 +0100

I don't succeed to make the shiny server work but:
When I use wireshark, I see that the page not found error is sent by the docker container to the host, so they can comunicate. Besides, there is no log in codeface/log/shiny-server after the error, and the message is not helpfull : Sorry, but the page you requested doesn't exist.
I tried to execute shiny-server as root, but it appears to be a mistake, because it bring an other error "initialization failed" I first think about the previous error with library, so I did the modification related to but I realized that nothing happened and being root make shiny server failed every time. ( I tried using my shiny-server working codeface with this new configuration and I got the same error : "initialization failed") 

So I am back to the Page not found error.
yet, I know that the port binding is correctly done so the error may comes from the shiny server configurations and other r files, inside the container.
for now, I have two different codeface instances that can run shiny-server with exactly the same files, and one is working while the other fails. 

Best Regards,Florian Peguet.
that sounds good; however, I'm curious why these includes are necessary. Since the web front end used to work, and there were no changes to it 
lately, things should work as-is. Can you post you code somewhere to
make the problem reproducible?


I think, my code the same as yours.
Maybe you did something to load these libraries before you run R.
I am not used to R, so it's just an idea but maybe you have a .Rprofile 
in your home directory that do the trick?

no, that's not the case.

With code I meant the Docker file (or some other form of script-based
installation) so that we can reproduce your issue.

Best regards, Wolfgang Mauerer



Best Regards,Florian Peguet.
You were right, I have added the breadcrumb source to the ui.r file in 
$CFDIR/codeface/R/shiny/apps/dashboard that way
(I don't know if it is the best)
source("../../nav/breadcrum.shiny.r", chdir = TRUE)
source("../../nav/widgets.r", chdir = TRUE)
source("../../nav/qa_cookie.r", chdir = TRUE)
source("gridsterWidgetsExt.r", chdir = TRUE) ( to correct an other
error)
I also add library(stringr) to $CFDIR/codeface/R/shiny/figure.of.merit.r 
and library(shinyGridster) to
$CFDIR/codeface/R/shiny/apps/dashboard/gridsterWidgetsExt.r so that
error all errors disappears
that sounds good; however, I'm curious why these includes are necessary. 
Since the web front end used to work, and there were no changes to it
lately, things should work as-is. Can you post you code somewhere to
make the problem reproducible?
I now have some widgets that appears on the screen, but not enough, I 
think.

I still have nothing for docker


please follow the suggestions from my previous email.

Best regards, Wolfgang Mauerer



Dear all,
I managed to solve my previous problem ( the command xsltproc was not installed and seems to be mandatory for cppstats, maybe it could be a 
good thing to add apt-get install xsltproc, in the README process)


yes, this requirement is indeed documented on cppstat's homepage:
http://www.infosun.fim.uni-passau.de/cl/staff/liebig/cppstats/
Good catch - could you please submit a patch for the README file?
"Codeface test" now give the same result wether I execute it from the 
regensburg server or the docker images.
The enhancements of analyses for project may be pass on the docker
instance since I use git clone.

I am now thinking about using shiny server so that users can use
codeface easily from their web browser, but I got errors.

When I run shiny server (with the command shiny-server
shiny-server.config) from my computer (same as the regensburg-server) I 
got this at localhost with firefox :
ERROR: impossible to find the function "breadcrumbOutput".
Have I missed something?


the function should be defined in
codeface/R/shiny/nav/breadcrumb.shiny.r,
maybe there a file inclusion missing somewhere. Can you look at the log 
files (there are several of them, look for *.log in the installation
directory) and post the complete error message?


for docker, it is harder to run shiny-server, because localhost is
running on the virtual container and not on the real computer/server. 
The solution is to create a bridge between ports.
I tried to make a bridge for port 8081 where the shiny server may run 
but i got Page not found on my web browser. This means something
happened otherwise I would get "connection failed"


the approach is sound; naturally, docker cannot use the host
ports directly because otherwise you would not be able to run,
for instance, two containers with different versions of a server
software on one single machine.


for now I don't understand why I don't get the previous error with
docker (breadcrumbOutput not found) .
Is there more than one port to bind?


did you properly expose the port in the dockerfile? Can you sniff
the traffic with, say, wireshark to see what it going on on the wire? 

Best regards, Wolfgang Mauerer


I use docker like that:
docker run -p port_on_docker:port_on_the_real_computer
folder_name/my_image_name:tag

Florian.

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