Interface ISynchronizer

All Known Implementing Classes:
AbstractComponentRepository, AbstractExtComponentRepository

public interface ISynchronizer
A Synchronizer participates in system synchoronization. During a synchronization, a synchronizer may declare any number of resources invalid and subsequently perform synchronization post processing.

The synchronization implementation looks up all synchronizers and implements the following steps:

  1. Pre-invalidation: Ask all synchronizers for invalid resources via the preInvalidation(ISynchronization) method
  2. Invalidate all declared resources.
  3. Completion:: Complete synchronization via the complete(ISynchronization) method.
Synchronizers have a priority. Synchronizers with higher priority will be called later during the pre-invalidation phase and they will be called earlier during the completion phase.

The following table lists priorities of common synchronizers:

SynchronizerprioritypreInvalidationorderCompletionorder
com.zfabrik.boot.repos/synchronizer900run pre-invalidation on all extensions of AbstractComponentReporun complete on all extensions of AbstractComponentRepo
com.zfabrik.components.workeradapter/workerSynchronizer800 Reset worker side db
com.zfabrik.components/querySynchronizer550 Verify component query subscriptions at home and workers
com.zfabrik.workers/workerSynchronizer500 Propagate invalidations to worker. Attain worker target states
com.zfabrik.hubcr/synchronizer100 Trigger update scan on worker-side Hub CR implementation
com.zfabrik.boot.main/homeSynchronizer1 Attain home states (home_up)
Author:
hb
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final String
    Component property defining the priority of a synchronizer
    static final String
    Component type of a synchronizer
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    synchronizers implement this method to re-establish any desired system state after all invalidations have been performed.
    void
    synchronizers implement this method to collect the set of components to invalidate and log messages to the end user.
  • Field Details

  • Method Details

    • preInvalidation

      void preInvalidation(ISynchronization sync)
      synchronizers implement this method to collect the set of components to invalidate and log messages to the end user.
    • complete

      void complete(ISynchronization sync)
      synchronizers implement this method to re-establish any desired system state after all invalidations have been performed. Note that the set of synchronizer in this call may be different to before, due to new system content.