private static bool ArchiveTimeRange(ImageServerLogWriter <ApplicationLog> writer, DateTime cutOffTime)
{
ApplicationLogSelectCriteria criteria = new ApplicationLogSelectCriteria();
criteria.Timestamp.LessThan(cutOffTime);
criteria.Timestamp.SortAsc(0);
using (ServerExecutionContext context = new ServerExecutionContext())
{
IApplicationLogEntityBroker broker = context.ReadContext.GetBroker <IApplicationLogEntityBroker>();
List <ServerEntityKey> keyList = new List <ServerEntityKey>(1000);
try
{
broker.Find(criteria, delegate(ApplicationLog result)
{
keyList.Add(result.Key);
if (writer.WriteLog(result, result.Timestamp))
{
// The logs been flushed, delete the log entries cached.
// Purposely use a read context here, even though we're doing
// an update, so we don't use transaction wrappers, optimization
// is more important at this point.
using (
IReadContext update =
PersistentStoreRegistry.GetDefaultStore().OpenReadContext())
{
IApplicationLogEntityBroker updateBroker =
update.GetBroker <IApplicationLogEntityBroker>();
foreach (ServerEntityKey key in keyList)
{
updateBroker.Delete(key);
}
}
keyList = new List <ServerEntityKey>(1000);
}
});
if (keyList.Count > 0)
{
// Purposely use a read context here, even though we're doing an update, so we
// don't have to do an explicit commit and don't use transaction wrappers.
using (
IReadContext update =
PersistentStoreRegistry.GetDefaultStore().OpenReadContext())
{
IApplicationLogEntityBroker updateBroker = update.GetBroker <IApplicationLogEntityBroker>();
foreach (ServerEntityKey key in keyList)
{
updateBroker.Delete(key);
}
}
}
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception when purging log files.");
return(false);
}
return(true);
}
}
private bool ArchiveLogs(ServerFilesystemInfo archiveFs)
{
string archivePath = Path.Combine(archiveFs.Filesystem.FilesystemPath, "AlertLog");
DateTime cutOffTime = Platform.Time.Date.AddDays(ServiceLockSettings.Default.AlertCachedDays * -1);
AlertSelectCriteria criteria = new AlertSelectCriteria();
criteria.InsertTime.LessThan(cutOffTime);
criteria.InsertTime.SortAsc(0);
using (ServerExecutionContext context = new ServerExecutionContext())
{
IAlertEntityBroker broker = context.ReadContext.GetBroker <IAlertEntityBroker>();
ImageServerLogWriter <Alert> writer = new ImageServerLogWriter <Alert>(archivePath, "Alert");
List <ServerEntityKey> keyList = new List <ServerEntityKey>(500);
try
{
broker.Find(criteria, delegate(Alert result)
{
keyList.Add(result.Key);
// If configured, don't flush to disk. We just delete the contents of keyList below.
if (!ServiceLockSettings.Default.AlertDelete)
{
if (writer.WriteLog(result, result.InsertTime))
{
// The logs been flushed, delete the log entries cached.
using (
IUpdateContext update =
PersistentStoreRegistry.GetDefaultStore().OpenUpdateContext(UpdateContextSyncMode.Flush)
)
{
IApplicationLogEntityBroker updateBroker =
update.GetBroker <IApplicationLogEntityBroker>();
foreach (ServerEntityKey key in keyList)
{
updateBroker.Delete(key);
}
update.Commit();
}
keyList = new List <ServerEntityKey>();
}
}
});
writer.FlushLog();
if (keyList.Count > 0)
{
using (
IUpdateContext update =
PersistentStoreRegistry.GetDefaultStore().OpenUpdateContext(UpdateContextSyncMode.Flush))
{
IAlertEntityBroker updateBroker = update.GetBroker <IAlertEntityBroker>();
foreach (ServerEntityKey key in keyList)
{
updateBroker.Delete(key);
}
update.Commit();
}
}
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception when purging Alert log files.");
writer.Dispose();
return(false);
}
writer.Dispose();
return(true);
}
}
private bool ArchiveLogs(ServerFilesystemInfo archiveFs)
{
try
{
using (ServerExecutionContext context = new ServerExecutionContext())
{
string archivePath = Path.Combine(archiveFs.Filesystem.FilesystemPath, "ApplicationLog");
ApplicationLogSelectCriteria criteria = new ApplicationLogSelectCriteria();
criteria.Timestamp.SortAsc(0);
IApplicationLogEntityBroker broker = context.ReadContext.GetBroker <IApplicationLogEntityBroker>();
ApplicationLog firstLog = broker.FindOne(criteria);
if (firstLog == null)
{
return(true);
}
DateTime currentCutOffTime = firstLog.Timestamp.AddMinutes(5);
int cachedDays = ServiceLockSettings.Default.ApplicationLogCachedDays;
if (cachedDays < 0)
{
cachedDays = 0;
}
DateTime cutOffTime = Platform.Time.Date.AddDays(cachedDays * -1);
if (currentCutOffTime > cutOffTime)
{
return(true);
}
using (
ImageServerLogWriter <ApplicationLog> writer =
new ImageServerLogWriter <ApplicationLog>(archivePath, "ApplicationLog"))
{
while (currentCutOffTime < cutOffTime)
{
if (!ArchiveTimeRange(writer, currentCutOffTime))
{
writer.FlushLog();
return(false);
}
currentCutOffTime = currentCutOffTime.AddMinutes(5);
}
// Now flush the last potential 5 minutes.
if (!ArchiveTimeRange(writer, cutOffTime))
{
writer.FlushLog();
return(false);
}
writer.FlushLog();
}
return(true);
}
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception when writing log file.");
return(false);
}
}