Examples of org.syncany.operations.down.DownOperation

org.syncany.operations.down.DownOperation

The down operation implements a central part of Syncany's business logic. It determines whether other clients have uploaded new changes, downloads and compares these changes to the local database, and applies them locally. The down operation is the complement to the {@link UpOperation}.

The general operation flow is as follows:

List all database versions on the remote storage using the {@link LsRemoteOperation}(implemented in {@link #listUnknownRemoteDatabases(MemoryDatabase,TransferManager) listUnknownRemoteDatabases()}
Download unknown databases using a {@link TransferManager} (if any), skip the rest down otherwise(implemented in {@link #downloadUnknownRemoteDatabases(TransferManager,List) downloadUnknownRemoteDatabases()}
Load remote database headers (branches) and compare them to the local database to determine a winner using several methods of the {@link DatabaseReconciliator}
Determine whether the local branch conflicts with the winner branch; if so, prune conflicting local database versions (using {@link DatabaseReconciliator#findLosersPruneBranch(DatabaseBranch,DatabaseBranch) findLosersPruneBranch()})
If the apply-changes-flag is switched on, changes are applied to the local file system using the {@link ApplyChangesOperation}.
Save local database and update known database list (database files that do not need to be downloaded anymore

@see DatabaseReconciliator @author Philipp C. Heckel

    
    logger.log(Level.INFO, "Sync up performance: "+timeSyncUpTotal+" ms");
    
    // Sync down B
    long timeSyncDownStart = System.currentTimeMillis();
    new DownOperation(configB).execute();
    long timeSyncDownEnd = System.currentTimeMillis();    
    long timeSyncDownTotal = timeSyncDownEnd - timeSyncDownStart;
    
    if (timeSyncDownTotal > 3000) {
      fail("Sync down took: "+timeSyncDownTotal+" ms");

      
      try {
        boolean notifyChanges = false;
        
        // Run down
        DownOperationResult downResult = new DownOperation(config, options.getDownOptions()).execute();
        
        if (downResult.getResultCode() == DownResultCode.OK_WITH_REMOTE_CHANGES) {
          // TODO [low] Do something?
        }

  public DownOperationResult down() throws Exception {
    return down(new DownOperationOptions());
  }


  public DownOperationResult down(DownOperationOptions options) throws Exception {
    return new DownOperation(config, options).execute();
  }

Examples of org.syncany.operations.down.DownOperation

Related Classes of org.syncany.operations.down.DownOperation