/// <summary>
/// A stream to the local cache, or null if the file is not cached.
/// </summary>
/// <returns>A stream to access the file.</returns>
public virtual ISharedStreamReader GetStream()
{
if (this.LocalCachePath != null && File.Exists(this.LocalCachePath))
{
CachedClusterResidentObject.Record(this);
return(new FileSharedStreamReader(this.LocalCachePath));
}
return(null);
}
/// <summary>
/// Create a wrapper around a folder in the cache.
/// </summary>
///
/// <param name="folder">Folder to represent.</param>
public FolderInCachedCluster(CachedClusterResidentObject folder)
: base(folder.Config, folder.Job)
{
if (!folder.RepresentsAFolder)
{
throw new ArgumentException(folder + " is not a folder");
}
this.OriginalFolder = folder;
// ReSharper disable once DoNotCallOverridableMethodsInConstructor
this.RepresentsAFolder = true;
}
/// <summary>
/// Record the creation of this particular cluster resident object so it can be retrieved from the job summary.
/// </summary>
/// <param name="file">Object to record.</param>
private static void Record(CachedClusterResidentObject file)
{
if (file.Job == null)
{
return;
}
if (string.IsNullOrEmpty(file.LocalCachePath))
{
throw new ClusterException("Missing expected LocalCachePath");
}
CachedClusterResidentObject.RecordCachedFile(file.Job, file.LocalCachePath);
}
/// <summary>
/// This is closed when the cached file has been completely read.
/// </summary>
protected void OnClose()
{
// save the file to its proper place
if (this.cacheWriter != null)
{
// this.cacheWriter.Close(); -- the callee should have done this already
try
{
Utilities.EnsureDirectoryExistsForFile(this.LocalCachePath);
Utilities.Move(this.tempFileName, this.LocalCachePath);
Trace.TraceInformation("Writing to cache {0}", this.LocalCachePath);
CachedClusterResidentObject.Record(this);
}
catch (Exception e)
{
Trace.TraceInformation("Exception {0} during move", e.Message);
}
this.tempFileName = null;
this.cacheWriter = null;
}
}
/// <summary>
/// Create a wrapper around a folder in the cache.
/// </summary>
///
/// <param name="folder">Folder to represent.</param>
public FolderInCachedCluster(CachedClusterResidentObject folder)
: base(folder.Config, folder.Job)
{
if (!folder.RepresentsAFolder)
throw new ArgumentException(folder + " is not a folder");
this.OriginalFolder = folder;
// ReSharper disable once DoNotCallOverridableMethodsInConstructor
this.RepresentsAFolder = true;
}
/// <summary>
/// Record the creation of this particular cluster resident object so it can be retrieved from the job summary.
/// </summary>
/// <param name="file">Object to record.</param>
private static void Record(CachedClusterResidentObject file)
{
if (file.Job == null)
return;
if (string.IsNullOrEmpty(file.LocalCachePath))
throw new ClusterException("Missing expected LocalCachePath");
CachedClusterResidentObject.RecordCachedFile(file.Job, file.LocalCachePath);
}