private void applyWinnersBranch(Branch winnersBranch, List<File> unknownRemoteDatabasesInCache)
throws Exception {
Branch winnersApplyBranch =
databaseReconciliator.findWinnersApplyBranch(localBranch, winnersBranch);
logger.log(Level.INFO, "- Database versions to APPLY locally: " + winnersApplyBranch);
if (winnersApplyBranch.size() == 0) {
logger.log(Level.WARNING, " + Nothing to update. Nice!");
result.setResultCode(DownResultCode.OK_NO_REMOTE_CHANGES);
} else {
logger.log(Level.INFO, "- Loading winners database ...");
Database winnersDatabase =
readWinnersDatabase(winnersApplyBranch, unknownRemoteDatabasesInCache);
FileSystemActionReconciliator actionReconciliator =
new FileSystemActionReconciliator(config, localDatabase, result);
List<FileSystemAction> actions =
actionReconciliator.determineFileSystemActions(winnersDatabase);
Set<MultiChunkEntry> unknownMultiChunks =
determineRequiredMultiChunks(actions, winnersDatabase);
downloadAndDecryptMultiChunks(unknownMultiChunks);
applyFileSystemActions(actions);
// Add winners database to local database
// Note: This must happen AFTER the file system stuff, because we compare the winners database
// with the local database!
for (DatabaseVersionHeader applyDatabaseVersionHeader : winnersApplyBranch.getAll()) {
logger.log(
Level.INFO,
" + Applying database version " + applyDatabaseVersionHeader.getVectorClock());
DatabaseVersion applyDatabaseVersion =
winnersDatabase.getDatabaseVersion(applyDatabaseVersionHeader.getVectorClock());
localDatabase.addDatabaseVersion(applyDatabaseVersion);
}
logger.log(Level.INFO, "- Saving local database to " + config.getDatabaseFile() + " ...");
saveLocalDatabase(localDatabase, config.getDatabaseFile());
result.setResultCode(DownResultCode.OK_WITH_REMOTE_CHANGES);
}
}
private void pruneConflictingLocalBranch(Branch winnersBranch) throws Exception {
Branch localPruneBranch =
databaseReconciliator.findLosersPruneBranch(localBranch, winnersBranch);
logger.log(Level.INFO, "- Database versions to REMOVE locally: " + localPruneBranch);
if (localPruneBranch.size() == 0) {
logger.log(Level.INFO, " + Nothing to prune locally. No conflicts. Only updates. Nice!");
} else {
// Load dirty database (if existent)
logger.log(Level.INFO, " + Pruning databases locally ...");
Database dirtyDatabase = new Database();
for (DatabaseVersionHeader databaseVersionHeader : localPruneBranch.getAll()) {
// Database version
DatabaseVersion databaseVersion =
localDatabase.getDatabaseVersion(databaseVersionHeader.getVectorClock());
dirtyDatabase.addDatabaseVersion(databaseVersion);
// Remove database version locally
logger.log(Level.INFO, " * Removing " + databaseVersionHeader + " ...");
localDatabase.removeDatabaseVersion(databaseVersion);
DatabaseRemoteFile remoteFileToPrune =
new DatabaseRemoteFile(
"db-"
+ config.getMachineName()
+ "-"
+ databaseVersionHeader.getVectorClock().get(config.getMachineName()));
logger.log(Level.INFO, " * Deleting remote database file " + remoteFileToPrune + " ...");
transferManager.delete(remoteFileToPrune);
}
logger.log(
Level.INFO, " * Saving dirty database to " + config.getDirtyDatabaseFile() + " ...");
saveLocalDatabase(dirtyDatabase, config.getDirtyDatabaseFile());
}
}
