/// <summary>
/// Creates a new <see cref="RolloverLog"/>
/// </summary>
/// <param name="settings">the settings</param>
/// <param name="list">the list</param>
public RolloverLog(RolloverLogSettings settings, ArchiveList list)
{
m_settings = settings.CloneReadonly();
m_settings.Validate();
if (settings.IsFileBacked)
{
foreach (var logFile in Directory.GetFiles(settings.LogPath, settings.SearchPattern))
{
var log = new RolloverLogFile(logFile);
if (log.IsValid)
{
log.Recover(list);
}
else
{
log.Delete();
}
}
}
}
/// <summary>
/// Creates a new <see cref="RolloverLog"/>
/// </summary>
/// <param name="settings">the settings</param>
/// <param name="list">the list</param>
public RolloverLog(RolloverLogSettings settings, ArchiveList list)
{
m_settings = settings.CloneReadonly();
m_settings.Validate();
if (settings.IsFileBacked)
{
foreach (var logFile in Directory.GetFiles(settings.LogPath, settings.SearchPattern))
{
var log = new RolloverLogFile(logFile);
if (log.IsValid)
{
log.Recover(list);
}
else
{
log.Delete();
}
}
}
}
private void OnExecute(object sender, EventArgs <ScheduledTaskRunningReason> e)
{
//The worker can be disposed either via the Stop() method or
//the Dispose() method. If via the dispose method, then
//don't do any cleanup.
if (m_disposed && e.Argument == ScheduledTaskRunningReason.Disposing)
{
return;
}
//go ahead and schedule the next rollover since nothing
//will happen until this function exits anyway.
//if the task is disposing, the following line does nothing.
m_rolloverTask.Start(m_settings.ExecuteTimer);
lock (m_syncRoot)
{
if (m_disposed)
{
return;
}
using (ArchiveListSnapshot <TKey, TValue> resource = m_archiveList.CreateNewClientResources())
{
resource.UpdateSnapshot();
List <ArchiveTableSummary <TKey, TValue> > list = new List <ArchiveTableSummary <TKey, TValue> >();
List <Guid> listIds = new List <Guid>();
for (int x = 0; x < resource.Tables.Length; x++)
{
ArchiveTableSummary <TKey, TValue> table = resource.Tables[x];
if (table.SortedTreeTable.BaseFile.Snapshot.Header.Flags.Contains(m_settings.MatchFlag) && table.SortedTreeTable.BaseFile.Snapshot.Header.Flags.Contains(FileFlags.IntermediateFile))
{
list.Add(table);
listIds.Add(table.FileId);
}
else
{
resource.Tables[x] = null;
}
}
bool shouldRollover = list.Count >= m_settings.CombineOnFileCount;
long size = 0;
for (int x = 0; x < list.Count; x++)
{
size += list[x].SortedTreeTable.BaseFile.ArchiveSize;
if (size > m_settings.CombineOnFileSize)
{
if (x != list.Count - 1)//If not the last entry
{
list.RemoveRange(x + 1, list.Count - x - 1);
}
break;
}
}
if (size > m_settings.CombineOnFileSize)
{
shouldRollover = true;
}
if (shouldRollover)
{
TKey startKey = new TKey();
TKey endKey = new TKey();
startKey.SetMax();
endKey.SetMin();
foreach (Guid fileId in listIds)
{
ArchiveTableSummary <TKey, TValue> table = resource.TryGetFile(fileId);
if (table is null)
{
throw new Exception("File not found");
}
if (!table.IsEmpty)
{
if (startKey.IsGreaterThan(table.FirstKey))
{
table.FirstKey.CopyTo(startKey);
}
if (endKey.IsLessThan(table.LastKey))
{
table.LastKey.CopyTo(endKey);
}
}
}
RolloverLogFile logFile = null;
Action <Guid> createLog = (x) =>
{
logFile = m_rolloverLog.Create(listIds, x);
};
using (UnionReader <TKey, TValue> reader = new UnionReader <TKey, TValue>(list))
{
SortedTreeTable <TKey, TValue> dest = m_createNextStageFile.CreateArchiveFile(startKey, endKey, size, reader, createLog);
resource.Dispose();
using (ArchiveListEditor <TKey, TValue> edit = m_archiveList.AcquireEditLock())
{
//Add the newly created file.
edit.Add(dest);
foreach (ArchiveTableSummary <TKey, TValue> table in list)
{
edit.TryRemoveAndDelete(table.FileId);
}
}
}
if (logFile != null)
{
logFile.Delete();
}
}
resource.Dispose();
}
m_rolloverComplete.Set();
}
}
