/// <summary>
/// Discard selected files.
/// </summary>
/// <param name="files">Files selected for discard.</param>
/// <param name="onProgress">This is called when there is some progress made.</param>
public void Discard(Filemap.FileDiff[] files, Action <string> onProgress)
{
var dataJson = new PullInput
{
Authority = Authority
};
var lastCommitId = -1;
Request.Send(ServerAddress + "getcommit", dataJson.ToJson(), stream =>
{
using (var reader = new BinaryReader(stream))
{
var message = reader.ReadString();
if (message == "Done")
{
lastCommitId = reader.ReadInt32();
}
else
{
throw new Exception("Cannot discard, Error: <br>" + message);
}
}
});
// select current commit id
var commitInfo = RootDir + ".mysync/commit_info.txt";
var currentCommitId = File.Exists(commitInfo) ? int.Parse(File.ReadAllText(commitInfo)) : -1;
if (lastCommitId > currentCommitId)
{
throw new Exception("Cannot discard, project is not up-to-date!");
}
// select all files that are not 'created'
var filesToDownload = new List <Filemap.File>();
foreach (var file in files)
{
if (file.DiffType != Filemap.FileDiff.Type.Created)
{
filesToDownload.Add(new Filemap.File
{
FileName = file.FileName
});
}
}
var input = new DiscardInput
{
Authority = Authority,
Files = filesToDownload.ToArray()
};
// remove new files
var toDelete = 0;
foreach (var file in files)
{
if (file.DiffType == Filemap.FileDiff.Type.Created) // delete all 'created' files
{
var fileName = RootDir + file.FileName;
// delete file
File.Delete(fileName);
DirectoryHelper.DeleteIfEmpty(fileName);
toDelete++;
}
}
// check if there are files only for delete
if (toDelete == files.Length)
{
return;
}
// download original files from server
Request.Send(ServerAddress + "discard", input.ToJson(), stream =>
{
using (var reader = new BinaryReader(stream))
{
var commitJson = reader.ReadString();
while (true)
{
var state = reader.ReadBoolean();
if (state)
{
break;
}
var progress = reader.ReadInt32();
if (progress >= 0)
{
onProgress("Building commit...");
}
}
// download
var dataFile = RootDir + ".mysync/commit_recv.zip";
// send commit diff data file
using (var nfs = new NetFileStream(dataFile,
onError: delegate {
// throw error
throw new Exception("Error when downloading commit data file");
}))
{
nfs.Download(stream, delegate(long bytes, long sentBytes)
{
// show progress
var prc = (sentBytes / (float)bytes) * 100;
onProgress?.Invoke(prc.ToString("f1") + "%");
});
}
var commit = Commit.FromJson(commitJson);
try
{
// downloaded
// now apply changes
commit.Apply(RootDir, dataFile, true);
}
catch (Exception ex)
{
throw new Exception("Error when applying commit data file");
}
}
});
}
public static void Discard(string body, HttpListenerResponse response)
{
var projectName = "";
using (var writer = new BinaryWriter(response.OutputStream))
{
try
{
var input = DiscardInput.FromJson(body);
projectName = input.Authority.ProjectName;
if (!Authorization.HasAuthority(input.Authority.AccessToken, projectName))
{
writer.Write("Failed - project not found!");
return;
}
// request project lock
if (ProjectLock.TryLock(projectName, ProjectLock.LockMode.Upload) == ProjectLock.LockMode.Any)
{
writer.Write("Failed - project is locked!");
return;
}
var projectCollection = ServerCore.Database.GetCollection <CommitModel>(projectName);
var commits = projectCollection.Find(x => x.CommitId >= 0).ToList().OrderBy(x => x.CommitId).ToArray();
// select files then pack them
// and send to the client
var diff = new List <Filemap.FileDiff>();
foreach (var file in input.Files)
{
// select commits which contains this file(which is not removed by the commit) then order by commit and select the first commit.
var validCommit = commits.Where(x => x.Files.Any(n => n.Name == file.FileName && n.Operation != 2)).OrderByDescending(x => x.CommitId).FirstOrDefault();
if (validCommit != null)
{
// select the file
var validFile = validCommit.Files.First(x => x.Name == file.FileName);
diff.Add(new Filemap.FileDiff
{
FileName = validFile.Name,
DiffType = Filemap.FileDiff.Type.Changed,
Version = validFile.Version
});
}
else
{
Console.WriteLine("Commit not found for file " + file.FileName);
}
}
// create commit
var commit = Commit.FromDiff(diff.ToArray());
// write commit in json format
var commitJson = commit.ToJson();
writer.Write(commitJson);
// build commit diff data file
var dir = "data/" + projectName + "/";
var tempDataFile = "temp_send_" + input.Authority.Username + ".zip";
commit.Build(dir, tempDataFile, delegate(int progress)
{
var lastSend = DateTime.Now;
if ((DateTime.Now - lastSend).TotalSeconds >= 1.0f)
{
writer.Write(false);
writer.Write(progress);
}
});
writer.Write(true);
// send commit diff data file
using (var nfs = new NetFileStream(tempDataFile, onError: delegate
{
// user lost connection or closed the client
// before the whole data file is sent
Console.WriteLine("User '" + input.Authority.Username + "' canceled commit download.");
ProjectLock.Unlock(projectName);
}))
{
nfs.Upload(response.OutputStream);
}
File.Delete(tempDataFile);
}
catch (Exception ex)
{
writer.Write("Failed - invalid protocol/connection error! Error: " + ex);
Console.WriteLine(ex);
ProjectLock.Unlock(projectName);
}
}
ProjectLock.Unlock(projectName);
}
