Package org.imixs.archive.service

Class SyncService

java.lang.Object

org.imixs.archive.service.SyncService

public class SyncService
extends Object

The SyncService pulls a Snapshot into an Apache Cassandra archive. The service uses an asynchronous mechanism based on the Imixs EventLog.

The service connects to an Imixs-Workflow instance by the Rest Client to read new snapshot data.

The service is triggered by the SyncScheduler implementing a ManagedScheduledExecutorService.

Version:

2.0

Author:

ralph.soika@imixs.com

Constructor Summary

Constructors

Constructor	Description
SyncService()

Method Summary

Modifier and Type	Method	Description
void	processEventLog(org.imixs.melman.EventLogClient eventLogClient, org.imixs.melman.DocumentClient documentClient)	This method is called by the ManagedScheduledExecutorService.
org.imixs.workflow.ItemCollection	pullSnapshot(org.imixs.workflow.ItemCollection eventLogEntry, org.imixs.melman.DocumentClient documentClient, org.imixs.melman.EventLogClient eventLogClient)	This method lookups the event log entries and pushes new snapshots into the archive service.
void	releaseDeadLocks(org.imixs.melman.EventLogClient eventLogClient)	Asynchronous method to release dead locks

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SyncService

public SyncService()

Method Detail

processEventLog

public void processEventLog(org.imixs.melman.EventLogClient eventLogClient,
                            org.imixs.melman.DocumentClient documentClient)
                     throws org.imixs.melman.RestAPIException

This method is called by the ManagedScheduledExecutorService. The method lookups the event log entries and pushes new snapshots into the archive service.

Each eventLogEntry is locked to guaranty exclusive processing.

Throws:

org.imixs.melman.RestAPIException

releaseDeadLocks

public void releaseDeadLocks(org.imixs.melman.EventLogClient eventLogClient)
                      throws org.imixs.melman.RestAPIException

Asynchronous method to release dead locks

Parameters:

eventLogClient -

deadLockInterval -

topic -

Throws:

org.imixs.melman.RestAPIException

pullSnapshot

public org.imixs.workflow.ItemCollection pullSnapshot(org.imixs.workflow.ItemCollection eventLogEntry,
                                                      org.imixs.melman.DocumentClient documentClient,
                                                      org.imixs.melman.EventLogClient eventLogClient)
                                               throws ArchiveException

This method lookups the event log entries and pushes new snapshots into the archive service.

The method returns a AsyncResult to indicate the completion of the push. A client can use this information for further control.

The method returns the snapshot ItemCollection

Throws:

ArchiveException

org.imixs.melman.RestAPIException