public int Cleanup(DateTime target)
{
int counter = 0;
using (IsolatedStorageDirectory dir = GetStorageDirectory()) {
// first delete all files older than the target date
IEnumerable <IsolatedStorageFileInfo> files = dir.GetFilesWithTimes().Where(m => m.CreationTime < target && !m.FileName.EndsWith(".config", StringComparison.OrdinalIgnoreCase));
foreach (IsolatedStorageFileInfo file in files)
{
try {
if (dir.DeleteFile(file.FileName))
{
counter++;
}
} catch (Exception ex) {
LogAccessor.Log.FormattedError(typeof(IsolatedStorageQueueStore), ex, "Error deleting file '{0}' from isolated storage", file);
}
}
// check to see if we have an excessive amount of manifests
List <IsolatedStorageFileInfo> manifests = GetManifestsSortedByNewestCreateFirst(dir);
if (manifests.Count <= 250)
{
return(counter);
}
// delete all but the newest 250
foreach (IsolatedStorageFileInfo file in manifests.Skip(250))
{
try {
var manifest = dir.ReadFile <Manifest>(file.FileName);
if (manifest == null || !manifest.CanDiscard)
{
continue;
}
Delete(dir, manifest.Id);
counter++;
} catch (Exception ex) {
LogAccessor.Log.FormattedError(typeof(IsolatedStorageQueueStore), ex, "Error deleting manifest file '{0}' from isolated storage", file);
}
}
}
return(counter);
}
private List <IsolatedStorageFileInfo> GetManifestsSortedByNewestCreateFirst(IsolatedStorageDirectory dir)
{
return(dir.GetFilesWithTimes("*" + QueueManager.MANIFEST_EXTENSION).OrderByDescending(m => m.CreationTime).ToList());
}
private List <IsolatedStorageFileInfo> GetManifestsSortedByOldestWriteFirst(IsolatedStorageDirectory dir, DateTime?manifestsLastWriteTimeOlderThan = null)
{
DateTime lastWriteTimeFilter = manifestsLastWriteTimeOlderThan.HasValue ? manifestsLastWriteTimeOlderThan.Value : DateTime.Now;
return(dir.GetFilesWithTimes("*" + QueueManager.MANIFEST_EXTENSION).Where(m => m.LastWriteTime.DateTime <= lastWriteTimeFilter).OrderBy(m => m.LastWriteTime).ToList());
}
private List<IsolatedStorageFileInfo> GetManifestsSortedByNewestCreateFirst(IsolatedStorageDirectory dir) {
return dir.GetFilesWithTimes("*" + QueueManager.MANIFEST_EXTENSION).OrderByDescending(m => m.CreationTime).ToList();
}
private List<IsolatedStorageFileInfo> GetManifestsSortedByOldestWriteFirst(IsolatedStorageDirectory dir, DateTime? manifestsLastWriteTimeOlderThan = null) {
DateTime lastWriteTimeFilter = manifestsLastWriteTimeOlderThan.HasValue ? manifestsLastWriteTimeOlderThan.Value : DateTime.Now;
return dir.GetFilesWithTimes("*" + QueueManager.MANIFEST_EXTENSION).Where(m => m.LastWriteTime.DateTime <= lastWriteTimeFilter).OrderBy(m => m.LastWriteTime).ToList();
}