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Distribute NPrinting reports after reloading a Qlik App

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Distribute NPrinting reports after reloading a Qlik App

One of the most common questions is how can i distribute my NPrinting reports to occur automatically as soon as my Qlik app is done reloading ?

THis is possible in both Qlik Sense and with QlikView using the NPrinting API. Moreover, you can invoke the API through the the Qlik load script Qlik REST Connector v1.3+.  What this means is that you can schedule and/or chain your NPrinting report distributions using the Qlik Sense scheduler or the QlikView publisher to better integrate the operations across the platform

.The sample included herein draws on the great document published by gianluca perrin on Qlik Community here:   https://community.qlik.com/thread/292037

Benefits

  1. Common Scheduler

    Currently NPrinting and QLik (Sense or View) have separate schedulers.

    If you reload a Qlik application daily at 1:00AM and want to send the NPrinting reports directly after a successful reload, you must schedule them separately for times that you believe  will not intefere with each other.   Its better to have a100% chained solution however whereby reports are only distribute upon successful reload of the Qlik app.


  2. Error handling

     Should the NPrinting task, publisher has a built in solution to notify administrators. Qlik Sense also has 3rd party solutions to do the same.

Restrictions

       You need to have v1.3 of the Qlik REST Connector. Its available as of  Feb 2018.

Sample


       Connection setup


       You will need to create two REST Connector connections to the NPrinting API.  One that uses a default HTTP method of "GET" , the other will use "POST" as the default method.

        Please reference pages 8-9 of the document  https://community.qlik.com/thread/292037  to create the two connections.

Image 1 Get Rest Connection.png

                    

Image 2 Post Rest Connection.png

                      

      App Setup

               1. Import the attached application and open the script in the Data Load Editor

               2. Modify the SETUP tab to reflect your

                    i. on lines 25/26  update the names of the two REST Connections that you create using the steps in 'Connection Setup' above.

                    ii. on line 30 , if NPrinting is configured to use https (it is by default) leave this setting to 'Yes' .  If you reconfigured it to use http , set to 'No'

                    iii.   On line 31 ,  set the NPrinting server and endpoint  (host + port)

                    iv:   Line 35 is the name of the NPrinting Publish Task that you want to execute

                    v:   Line 37 and 38 is an enhancement to have Qlik check the NPrinting task executions for errors, or , if it runs too long, to abort it and report a failure .

Image 3 Variables.png

                              

                  3.  (optional)  You can also Import the following application into Qlik Sense to send an administrative alert. THis is not necessary with QV Publisher as it has an in-built feature to notify administrators when a publish task fails.

                      

                 4. Open the imported app in the data load editor and update the 'setup' section

                     i.   on lines 21/22  update the names of the two REST Connections that you create using the steps in 'Connection Setup' above.

                    ii.   on line 26 , if NPrinting is configured to use https (it is by default) leave this setting to 'Yes' .  If you reconfigured it to use http , set to 'No'

                    iii.   On line 37 ,  set the NPrinting server and endpoint  (host + port)

                    iv:   Line 32 is the name of the NPrinting Publish Task that will alert an administrator about a report failure

              

                     (note that i've toyed with using the Notification Web Connector to send an administrative email alert in the event of a full blown NPrinting outage.  This sample is a little simpler)

Image 4 Variables.png

                       

       Task setup

                In Qlik Sense QMC under tasks i've setup 3 tasks .

                Task #1 - reloads  a Qlik App

                Task #2 - Distributes reports in an NPrinting Publish task     (this is chained to execute 'on success' of Task #1)

                 Task #3 - Send an Administrator alert   (this is chained to execute 'on failure' of Task #2)

               Image 5 Task setup.png


QLIKVIEW


            The QLikVIew solution has all the same benefits as the Qlik Sense solution with a couple more benefits.

            Additional benefits:

             - you can pass the vTask  name from the publisher task to make for greater re-usability of the load script for chaining multiple tasks

             - Publisher has a built in admin notification feature. SHould the NP task fail, the publisher task will also fail and an admin notification will be sent  (you can do that with qlik sense but need to use a 3rd party qlik sense task notification solution, or use the load script to call an administrative task to send a notification. The latter can be done with NPrinting or with the Qlik Web Notification Connector.


Load script



The QlikView load script has a login ,  get task ID (lookup using task name),  post task execution, and a task execution check  tab.    The task execution check tab will monitor the NP task execution on an interval with a configurable timeout.  Should the NP task throw a warning or error, it errors out the publisher task.  Should the NP task exceed the timeout, it kills the NP task and errors out the publisher task.

You will need to update the NPServer, Task and timeout settings in the CONFIG tab.  Again use the REST Connector 1.3 and i suggest testing with QV desktop first .  The REST Connector must be manually installed on QV desktop and on the publisher machine to work.

Image 6 Load Script.png


Attachments
Comments
khan_imran
Contributor

I have followed the above mentioned steps but not getting below script. Am I missing any steps to achieve it? 

Kindly assist.

RestConnectorMasterTable:
SQL SELECT
"__KEY_data",
(SELECT
"id",
"name",
"description",
"type",
"created",
"lastUpdate",
"lastExecution",
"enabled",
"appId",
"__FK_items"
FROM "items" FK "__FK_items")
FROM JSON (wrap off) "data" PK "__KEY_data"
WITH CONNECTION( URL "$(vEndpoint)", HTTPHEADER "cookie" "$(vCookie)",
QUERY "Limit" "1000000",);

0 Likes
gayathri_nagara
New Contributor II

Hi,

Thank you for the script.

Now I have a query.

How to trigger multiple tasks from the given script.

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jsobrinho
New Contributor III

Hello guys,

First of all, thank you for post

I would like your help, I am trying to use your .qvw app, and just change the npserver domain and I get the error:

QVX_UNEXPECTED_END_OF_DATA: Response headers are denied by the current connection. Please edit your connection in order to enable response headers loading.
RestConnectorMasterTable:

If I continue the script I have other error:

QVX_UNEXPECTED_END_OF_DATA: HTTP protocol error 403 (Forbidden):

 

Could you please help me, I don't know API or Qlik Connector REST it's my first time.

0 Likes
prinzchristian
New Contributor III

Hi,

I get the same error - already found a solution?

Thank You! Smiley Happy 

 

 

0 Likes
khan_imran
Contributor

I have followed all the steps and it is working perfectly fine now. In the Query Header, I have mentioned Origin Under Name and my server host name and it worked.

Kindly go through step by step and it will work fine.

 

Cheers

Imran K

 

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Last update:
‎03-08-2018 10:52 AM
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Employee