How journal observation works and where the log got persist ?

[Former Community Member]

Hi,

Where the Journal log are stored in cq5 server and is it implicitly configure or it has to be configure explicitly as asynchronous observation ?

Please provide sample to  configure the journal observation in JCR.

Thanks in advance

[Sham_HC · Accepted solution]

It stores in the form of data tar file at <cq_home>/crx-quickstart/repository/tarJournal.  You can configure different general or custom built one in repository.xml.  OOB configarable options for tar journal at http://dev.day.com/docs/en/cq/current/core/administering/persistence_managers.html#Journal

[Former Community Member]

Sham HC wrote...

It stores in the form of data tar file at <cq_home>/crx-quickstart/repository/tarJournal.  You can configure different general or custom built one in repository.xml.  OOB configarable options for tar journal at http://dev.day.com/docs/en/cq/current/core/administering/persistence_managers.html#Journal

Thanks

 I already referred that location but it seems it doesn't have any readable information.

What type of information the journal contains and how to capture it through program.

Suggest me a samples

[Jörg_Hoh]

The journal is not supposed to be used by other components than the repository itself.

Jörg

[Former Community Member]

Jörg Hoh wrote...

The journal is not supposed to be used by other components than the repository itself.

Jörg

Yes.

But how we captured those information and use it for further process .

What type of information journal have ?

Thanks

[Jörg_Hoh]

Why do you want to process the journal data? There is no API to access this data from outside of Jackrabbit/CRX, it's an implementation detail.

Jörg

[Ove_Lindström]

Jörg Hoh wrote...

Why do you want to process the journal data? There is no API to access this data from outside of Jackrabbit/CRX, it's an implementation detail.

Jörg

I ask the same question as Jörg. Why do you want to analyze the journal? Data masturbation?

Ove

[Former Community Member]

Jörg Hoh wrote...

Why do you want to process the journal data? There is no API to access this data from outside of Jackrabbit/CRX, it's an implementation detail.

Jörg

We have api javax.jcr.observation.ObservationManager through this we can access the jcr api from external environment.

some like that

  ObservationManager observationManager = session.getWorkspace().getObservationManager();
            
            EventJournal eventJournal = session.getWorkspace().getObservationManager().getEventJournal();
            
            while(eventJournal.hasNext()){

                Event event = eventJournal.nextEvent();
                System.out.println("userdata"+event.getUserData());
                System.out.println("Event:::"+event.getPath());
                System.out.println("User ID"+event.getUserID());

But my question here is what kind of information journal contains about jcr repository.

Whether it is useful for tracking the changes made by user in jcr it may be field level,user level and node level change . All  can be done through JCR async observation.

Purpose of journal observation ????

Thanks