private IEnumerable <BackupItemReference> GetReverseBackupSequence(
DateTime?minBackupEndTime, DateTime?restoreTargetTime, SupportedBackupType backupType)
{
var reverseFileSequence = BackupFileCatalog.GetReverseBackupSequence(restoreTargetTime, backupType);
return(GetReverseBackupSequence(minBackupEndTime, restoreTargetTime, reverseFileSequence));
}
/// <summary>
/// Factory method creating catalog for calendar month folders and default 'month-day-day' file naming convention.
/// </summary>
public static BackupFileCatalog CreateDefaultMonthDayDayCatalog(string databaseBackupFolder)
{
Check.DoRequireArgumentNotNull(databaseBackupFolder, "databaseBackupFolder");
var namingConvention = BackupDirectoryNamingConvention.CreateDefaultMonthDayDayConvention();
var result = new BackupFileCatalog(namingConvention, databaseBackupFolder);
return(result);
}
/// <summary>
/// Set EndTime to start of the next file of the same type where it has not yet been set explicitly.
/// </summary>
/// <param name="objectSequence">
/// Must be sorted chronologically
/// </param>
public static void InferEndTimeWhereNotDefinedExplicitly(List <BackupFileInfo> objectSequence)
{
var supportedBackupTypes = Enumerable.Cast <SupportedBackupType>(
Enum.GetValues(typeof(SupportedBackupType)))
.Where(t => t != SupportedBackupType.None);
foreach (var tp in supportedBackupTypes)
{
var filesOfTheSameType = objectSequence.Where(o => o.BackupType == tp).ToList();
BackupFileCatalog.InferEndTimeWhereNotDefinedExplicitly(filesOfTheSameType);
}
}
/// <summary>
/// Factory method creating catalog for calendar month folders and given file naming convention.
/// </summary>
/// <param name="fileNamingConvention">
/// File naming convention to use.
/// </param>
public static BackupFileCatalog CreateMonthlyCatalog(string databaseBackupFolder, IBackupFileNamingConvention fileNamingConvention)
{
Check.DoRequireArgumentNotNull(databaseBackupFolder, "databaseBackupFolder");
Check.DoRequireArgumentNotNull(fileNamingConvention, "fileNamingConvention");
var namingConvention = BackupDirectoryNamingConvention.CreateMonthlyConvention(fileNamingConvention);
var result = new BackupFileCatalog(namingConvention, databaseBackupFolder);
return(result);
}
/// <summary>
/// Verified sequence of backup items to restore to achieve configured outcome.
/// Never returns null.
/// </summary>
/// <param name="lastDatabaseBackupItem"></param>
/// <returns></returns>
private List <BackupItem> GetLogBackupItems(BackupItem lastDatabaseBackupItem, DateTime?targetTime)
{
Check.DoRequireArgumentNotNull(lastDatabaseBackupItem, "lastDatabaseBackupItem");
var result = new List <BackupItem>(1000);
var logFiles = BackupFileCatalog.GetLogBackupsSequence(lastDatabaseBackupItem.BackupStartTime);
// need only first log backup after target time; flag indicates that file is already processed
var targetReached = false;
var fileIterator = logFiles.GetEnumerator();
var lastBackupItem = lastDatabaseBackupItem;
while (!targetReached && fileIterator.MoveNext())
{
var header = ParseBackupHeader(fileIterator.Current.FileInfo);
if (header != null)
{
var itemIterator = header.ValidItems.GetEnumerator();
while (!targetReached && itemIterator.MoveNext())
{
var item = itemIterator.Current;
Check.DoAssertLambda(CheckSequence(lastBackupItem, item, false), () =>
$"Item #{item.Position} in file {item.FileInfo.Name} cannot be applied after item #{lastBackupItem.Position} in" +
$" file {lastBackupItem.FileInfo.Name}");
lastBackupItem = item;
result.Add(item);
targetReached = (targetTime.HasValue && item.BackupStartTime > targetTime.Value);
}
}
}
return(result);
}
