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MetadataGenerator.cs
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MetadataGenerator.cs
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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Threading.Tasks;
using System.Collections.Generic;
using CoCoL;
using Duplicati.Library.Main.Operation.Common;
using Duplicati.Library.Snapshots;
namespace Duplicati.Library.Main.Operation.Backup
{
/// <summary>
/// This class encapsulates the generation of metadata for a filesystem entry
/// </summary>
internal static class MetadataGenerator
{
private static readonly string METALOGTAG = Logging.Log.LogTagFromType(typeof(MetadataGenerator)) + ".Metadata";
public static Dictionary<string, string> GenerateMetadata(string path, System.IO.FileAttributes attributes, Options options, Snapshots.ISnapshotService snapshot)
{
try
{
Dictionary<string, string> metadata;
if (!options.SkipMetadata)
{
metadata = snapshot.GetMetadata(path, snapshot.IsSymlink(path, attributes), options.SymlinkPolicy == Options.SymlinkStrategy.Follow);
if (metadata == null)
metadata = new Dictionary<string, string>();
if (!metadata.ContainsKey("CoreAttributes"))
metadata["CoreAttributes"] = attributes.ToString();
if (!metadata.ContainsKey("CoreLastWritetime"))
{
try
{
metadata["CoreLastWritetime"] = snapshot.GetLastWriteTimeUtc(path).Ticks.ToString();
}
catch (Exception ex)
{
Logging.Log.WriteWarningMessage(METALOGTAG, "TimestampReadFailed", ex, "Failed to read timestamp on \"{0}\"", path);
}
}
if (!metadata.ContainsKey("CoreCreatetime"))
{
try
{
metadata["CoreCreatetime"] = snapshot.GetCreationTimeUtc(path).Ticks.ToString();
}
catch (Exception ex)
{
Logging.Log.WriteWarningMessage(METALOGTAG, "TimestampReadFailed", ex, "Failed to read timestamp on \"{0}\"", path);
}
}
}
else
{
metadata = new Dictionary<string, string>();
}
return metadata;
}
catch(Exception ex)
{
Logging.Log.WriteWarningMessage(METALOGTAG, "MetadataProcessFailed", ex, "Failed to process metadata for \"{0}\", storing empty metadata", path);
return new Dictionary<string, string>();
}
}
}
}