CEF rendering errors in Qlik NPrinting: Troubleshooting step: use benchmarks to test the importing image process

[Sonja_Bauernfeind]

The benchmark application replicates the steps Qlik NPrinting follows to import images from Qlik Sense. It can be used to import many copies of the same image quickly and verify if there are any problems during the process.

This must be used any time a report generation fails with "CEF rendering" error messages in the Qlik NPrinting Engine log files.

The benchmark creates specific log files in the Qlik NPrinting log folder and saves the imported images in C:\tmp.

Environment

• Qlik  NPrinting

Resolution:

To configure the benchmark: 

1. Download the zip file from here (GitHub) or use the direct download link (GitHub).
2. Extract it in C:\Benchmark\ on the machine where the Qlik NPrinting Engine is installed. 
3. Open the Engine.Navigator.QlikSense.Benchmarks.exe.config file in C:\Benchmark\Engine.Navigator.QlikSense.Benchmarks with a text editor program.
4. It is necessary to reconfigure the connection to Qlik Sense. Follow these steps:
   

   In <!-- Sense user identity -->

   <add key="bench-user-identity" value="domain\UserName" />

   Add the user domain and name as it is in the NPrinting connection

   In <!-- Sense url -->

   <add key="bench-proxy-url" value="https://qlikserverName" />

   Add the Qlik Sense Server Proxy address as it is in the NPrinting connection.

   In <!-- Sense app name -->

   <add key="bench-app-name" value="PxP training Executive Dashboard" />

   Add the Sense app name (not the app ID).

   In <!-- Sense object ids to print in the app, each navigator will render in the specified sequence the ids -->

   <add key="bench-obj-ids" value="OjectID" />

   Add the ID of the image that you are importing in the report. The image ID can be seen in the NPrinting template.

   In <!-- number of NPrinting printing identical cloned request per navigator process call -->

   <add key="bench-request-number" value="10" />

   Specify how many times the image must be imported. For troubleshooting purposes, 10 can be considered as the minimum.
   
   

5. If the config file does not already contain the following entry, add it below the first <appSettings> section:

   <add key="validate-server-certificate" value="false" />
   <add key="bench-request-number" value="10" />

   
   
   
6. Stop the Qlik NPrinting Engine and the Qlik  NPrinting Scheduler services.
7. Double-click on Engine.Navigator.QlikSense.Benchmarks.exe to start the application.

   Use an account that is both a local account and which meets all permission requirements as documented in Qlik NPrinting User accounts.

   If the user running the benchmark is a non-local administrator, the application may fail with a System.IO.FileLoadException (0x80131515). If that is the case, unblock the Engine.Navigator.QlikSense.dll and try again.

Collect the Qlik NPrinting logs from the Qlik NPrinting logs folder and check whether the images are generated in C:\tmp. Verify that all the images are there and that their quality is as expected. 

[SonPhan]

Hi Sonja,

the download file is not available, is there any other way to get access to the file?

Best regards Son

[Sonja_Bauernfeind]

Hello @SonPhan

I'll speak to our Support team to see where the file went. Thanks for flagging this!

Update: we have the file available; if you need it currently please direct message me.

All the best,
Sonja

[David_Friend]

@SonPhan do you still need it

[lcasbyapr]

I need it. How can I get it?

[Sonja_Bauernfeind]

Hello @lcasbyapr 

I got in touch with you through direct messages.

All the best,
Sonja 

[Sonja_Bauernfeind]

The file download link is functioning as intended again.