public HgResumeApiResponse Execute(string method, HgResumeApiParameters request, byte[] bytesToWrite, int secondsBeforeTimeout)
{
ValidateParameters(method, request, bytesToWrite, secondsBeforeTimeout);
if (method == "getRevisions")
{
IEnumerable<Revision> revisions = _repo.GetAllRevisions();
if (revisions.Count() == 0)
{
return ApiResponses.Revisions("0:default");
}
var revisionStrings = _repo.GetAllRevisions().Select(rev => rev.Number.Hash + ':' + rev.Branch);
return ApiResponses.Revisions(string.Join("|", revisionStrings.ToArray()));
}
if (method == "finishPushBundle")
{
return ApiResponses.PushComplete();
}
if (method == "pushBundleChunk")
{
_executeCount++;
if (_cancelCount == _executeCount)
{
_progress.CancelRequested = true;
return ApiResponses.Failed("");
}
if (_failCount == _executeCount)
{
return ApiResponses.Failed("");
}
if (_timeoutList.Contains(_executeCount))
{
return null;
}
if (_serverUnavailableList.Any(i => i.ExecuteCount == _executeCount))
{
return ApiResponses.NotAvailable(
_serverUnavailableList.Where(i => i.ExecuteCount == _executeCount).First().Message
);
}
_helper = new PullStorageManager(_localStorage.Path, request.TransId);
//int bundleSize = Convert.ToInt32(parameters["bundleSize"]);
//int offset = Convert.ToInt32(parameters["offset"]);
//int chunkSize = bytesToWrite.Length;
_helper.WriteChunk(request.StartOfWindow, bytesToWrite);
if (request.StartOfWindow + request.ChunkSize == request.BundleSize)
{
if (_repo.Unbundle(_helper.BundlePath))
{
return ApiResponses.PushComplete();
}
return ApiResponses.Reset();
}
if (request.StartOfWindow + request.ChunkSize < request.BundleSize)
{
return ApiResponses.PushAccepted(_helper.StartOfWindow);
}
return ApiResponses.Failed("offset + chunkSize > bundleSize !");
}
return ApiResponses.Custom(HttpStatusCode.InternalServerError);
}
public bool Pull(string[] baseRevisions)
{
var tipRevision = _repo.GetTip();
var localTip = "0";
string errorMessage;
if (tipRevision != null)
{
localTip = tipRevision.Number.Hash;
}
if (baseRevisions.Length == 0)
{
errorMessage = "Pull failed: No base revision.";
_progress.WriteError(errorMessage);
throw new HgResumeOperationFailed(errorMessage);
}
var bundleHelper = new PullStorageManager(PathToLocalStorage, GetBundleIdFilenameBase("pull", baseRevisions, localTip));
var req = new HgResumeApiParameters
{
RepoId = _apiServer.ProjectId,
BaseHashes = baseRevisions,
TransId = bundleHelper.TransactionId,
StartOfWindow = bundleHelper.StartOfWindow,
ChunkSize = InitialChunkSize
};
int bundleSize = 0;
int loopCtr = 1;
bool retryLoop;
do
{
if (_progress.CancelRequested)
{
throw new UserCancelledException();
}
retryLoop = false;
var response = PullOneChunk(req);
if (response.Status == PullStatus.Unauthorized)
{
throw new UnauthorizedAccessException();
}
if (response.Status == PullStatus.NotAvailable)
{
_progress.ProgressIndicator.Initialize();
_progress.ProgressIndicator.Finish();
return(false);
}
if (response.Status == PullStatus.Timeout)
{
_progress.WriteWarning("Pull operation timed out. Retrying...");
retryLoop = true;
continue;
}
if (response.Status == PullStatus.NoChange)
{
_progress.WriteMessage("No changes");
bundleHelper.Cleanup();
_progress.ProgressIndicator.Initialize();
_progress.ProgressIndicator.Finish();
return(false);
}
if (response.Status == PullStatus.InProgress)
{
_progress.WriteStatus("Preparing data on server");
retryLoop = true;
// advance the progress bar 2% to show that something is happening
_progress.ProgressIndicator.PercentCompleted = _progress.ProgressIndicator.PercentCompleted + 2;
continue;
}
if (response.Status == PullStatus.InvalidHash)
{
// this should not happen...but sometimes it gets into a state where it remembers the wrong basehash of the server (CJH Feb-12)
retryLoop = true;
_progress.WriteVerbose("Invalid basehash response received from server... clearing cache and retrying");
req.BaseHashes = GetHashStringsFromRevisions(GetCommonBaseHashesWithRemoteRepo(false));
continue;
}
if (response.Status == PullStatus.Fail)
{
// No need to abort the attempts just because .Net web request says so. See Push also. CP 2012-06
_progress.WriteWarning("Pull data chunk failed");
retryLoop = true;
req.StartOfWindow = bundleHelper.StartOfWindow;
continue;
}
if (response.Status == PullStatus.Reset)
{
retryLoop = true;
bundleHelper.Reset();
_progress.WriteVerbose("Server's bundle cache has expired. Restarting pull...");
req.StartOfWindow = bundleHelper.StartOfWindow;
continue;
}
//bundleSizeFromResponse = response.BundleSize;
if (loopCtr == 1)
{
_progress.ProgressIndicator.Initialize();
if (req.StartOfWindow != 0)
{
string message = String.Format("Resuming pull operation at {0} received", GetHumanReadableByteSize(req.StartOfWindow));
_progress.WriteVerbose(message);
}
}
bundleHelper.WriteChunk(req.StartOfWindow, response.Chunk);
req.StartOfWindow = req.StartOfWindow + response.Chunk.Length;
req.ChunkSize = response.ChunkSize;
if (bundleSize == response.BundleSize && bundleSize != 0)
{
_progress.ProgressIndicator.PercentCompleted = (int)((long)req.StartOfWindow * 100 / bundleSize);
string eta = CalculateEstimatedTimeRemaining(bundleSize, req.ChunkSize, req.StartOfWindow);
_progress.WriteStatus(string.Format("Receiving {0} {1}", GetHumanReadableByteSize(bundleSize), eta));
}
else
{
// this is only useful when the bundle size is significantly large (like with a clone operation) such that
// the server takes a long time to create the bundle, and the bundleSize continues to rise as the chunks are received
bundleSize = response.BundleSize;
_progress.WriteStatus(string.Format("Preparing data on server (>{0})", GetHumanReadableByteSize(bundleSize)));
}
loopCtr++;
} while (req.StartOfWindow < bundleSize || retryLoop);
if (_repo.Unbundle(bundleHelper.BundlePath))
{
_progress.WriteMessage("Pull operation completed successfully");
_progress.ProgressIndicator.Finish();
_progress.WriteMessage("Finished Receiving");
bundleHelper.Cleanup();
var response = FinishPull(req.TransId);
if (response == PullStatus.Reset)
{
/* Calling Pull recursively to finish up another pull will mess up the ProgressIndicator. This case is
* // rare enough that it's not worth trying to get the progress indicator working for a recursive Pull()
*/
_progress.WriteMessage("Remote repo has changed. Initiating additional pull operation");
GetCommonBaseHashesWithRemoteRepo(false); //Rebuild cache with current server information
return(Pull());
}
// REVIEW: I'm not sure why this was set to the server tip before, if we just pulled then won't our head
// be the correct common base? Maybe not if a merge needs to happen,
LastKnownCommonBases = new List <Revision>(_repo.BranchingHelper.GetBranches());
return(true);
}
_progress.WriteError("Received all data but local unbundle operation failed or resulted in multiple heads!");
_progress.ProgressIndicator.Finish();
bundleHelper.Cleanup();
errorMessage = "Pull operation failed";
_progress.WriteError(errorMessage);
throw new HgResumeOperationFailed(errorMessage);
}
public bool Pull(string[] baseRevisions)
{
var tipRevision = _repo.GetTip();
string localTip = "0";
string errorMessage;
if (tipRevision != null)
{
localTip = tipRevision.Number.Hash;
}
if (baseRevisions.Length == 0)
{
errorMessage = "Pull failed: No base revision.";
_progress.WriteError(errorMessage);
throw new HgResumeOperationFailed(errorMessage);
}
string bundleId = "";
foreach (var revision in baseRevisions)
{
bundleId += revision + "_" + localTip + '-';
}
bundleId = bundleId.TrimEnd('-');
var bundleHelper = new PullStorageManager(PathToLocalStorage, bundleId);
var req = new HgResumeApiParameters
{
RepoId = _apiServer.ProjectId,
BaseHashes = baseRevisions,
TransId = bundleHelper.TransactionId,
StartOfWindow = bundleHelper.StartOfWindow,
ChunkSize = InitialChunkSize
};
int bundleSize = 0;
int loopCtr = 1;
bool retryLoop;
do
{
if (_progress.CancelRequested)
{
throw new UserCancelledException();
}
retryLoop = false;
var response = PullOneChunk(req);
if (response.Status == PullStatus.Unauthorized)
{
throw new UnauthorizedAccessException();
}
if (response.Status == PullStatus.NotAvailable)
{
_progress.ProgressIndicator.Initialize();
_progress.ProgressIndicator.Finish();
return false;
}
if (response.Status == PullStatus.Timeout)
{
_progress.WriteWarning("Pull operation timed out. Retrying...");
retryLoop = true;
continue;
}
if (response.Status == PullStatus.NoChange)
{
_progress.WriteMessage("No changes");
bundleHelper.Cleanup();
_progress.ProgressIndicator.Initialize();
_progress.ProgressIndicator.Finish();
return false;
}
if (response.Status == PullStatus.InProgress)
{
_progress.WriteStatus("Preparing data on server");
retryLoop = true;
// advance the progress bar 2% to show that something is happening
_progress.ProgressIndicator.PercentCompleted = _progress.ProgressIndicator.PercentCompleted + 2;
continue;
}
if (response.Status == PullStatus.InvalidHash)
{
// this should not happen...but sometimes it gets into a state where it remembers the wrong basehash of the server (CJH Feb-12)
retryLoop = true;
_progress.WriteVerbose("Invalid basehash response received from server... clearing cache and retrying");
req.BaseHashes = GetHashStringsFromRevisions(GetCommonBaseHashesWithRemoteRepo(false));
continue;
}
if (response.Status == PullStatus.Fail)
{
// Not sure that we need to abort the attempts just because .Net web request says so. See Push also. CP 2012-06
errorMessage = "Pull data chunk failed";
_progress.WriteError(errorMessage);
retryLoop = true;
req.StartOfWindow = bundleHelper.StartOfWindow;
//_progress.ProgressIndicator.Initialize();
//_progress.ProgressIndicator.Finish();
//throw new HgResumeOperationFailed(errorMessage);
continue;
}
if (response.Status == PullStatus.Reset)
{
retryLoop = true;
bundleHelper.Reset();
_progress.WriteVerbose("Server's bundle cache has expired. Restarting pull...");
req.StartOfWindow = bundleHelper.StartOfWindow;
continue;
}
//bundleSizeFromResponse = response.BundleSize;
if (loopCtr == 1)
{
_progress.ProgressIndicator.Initialize();
if (req.StartOfWindow != 0)
{
string message = String.Format("Resuming pull operation at {0} received", GetHumanReadableByteSize(req.StartOfWindow));
_progress.WriteVerbose(message);
}
}
bundleHelper.WriteChunk(req.StartOfWindow, response.Chunk);
req.StartOfWindow = req.StartOfWindow + response.Chunk.Length;
req.ChunkSize = response.ChunkSize;
if (bundleSize == response.BundleSize && bundleSize != 0)
{
_progress.ProgressIndicator.PercentCompleted = (int)((long)req.StartOfWindow * 100 / bundleSize);
string eta = CalculateEstimatedTimeRemaining(bundleSize, req.ChunkSize, req.StartOfWindow);
_progress.WriteStatus(string.Format("Receiving {0} {1}", GetHumanReadableByteSize(bundleSize), eta));
}
else
{
// this is only useful when the bundle size is significantly large (like with a clone operation) such that
// the server takes a long time to create the bundle, and the bundleSize continues to rise as the chunks are received
bundleSize = response.BundleSize;
_progress.WriteStatus(string.Format("Preparing data on server (>{0})", GetHumanReadableByteSize(bundleSize)));
}
loopCtr++;
} while (req.StartOfWindow < bundleSize || retryLoop);
if (_repo.Unbundle(bundleHelper.BundlePath))
{
_progress.WriteMessage("Pull operation completed successfully");
_progress.ProgressIndicator.Finish();
_progress.WriteMessage("Finished Receiving");
bundleHelper.Cleanup();
var response = FinishPull(req.TransId);
if (response == PullStatus.Reset)
{
/* Calling Pull recursively to finish up another pull will mess up the ProgressIndicator. This case is
// rare enough that it's not worth trying to get the progress indicator working for a recursive Pull()
*/
_progress.WriteMessage("Remote repo has changed. Initiating additional pull operation");
return Pull();
}
// REVIEW: I'm not sure why this was set to the server tip before, if we just pulled then won't our head
// be the correct common base? Maybe not if a merge needs to happen,
LastKnownCommonBases = new List<Revision>(_repo.BranchingHelper.GetBranches());
return true;
}
_progress.WriteError("Received all data but local unbundle operation failed or resulted in multiple heads!");
_progress.ProgressIndicator.Finish();
bundleHelper.Cleanup();
errorMessage = "Pull operation failed";
_progress.WriteError(errorMessage);
throw new HgResumeOperationFailed(errorMessage);
}
public void StartOfWindow_NoWrites_Zero()
{
using (var e = new PullStorageEnvForTest())
{
var bundleHelper = new PullStorageManager(e.BaseFolder.Path, "randomHash");
Assert.That(bundleHelper.StartOfWindow, Is.EqualTo(0));
}
}
public void WriteChunk_WriteMultipleChunks_AssembledOk()
{
using (var e = new PullStorageEnvForTest())
{
var bundleHelper = new PullStorageManager(e.BaseFolder.Path, "randomHash");
string[] sampleTexts = new[] { "this is a sentence. ", "Another sentence. ", "Yet another word string." };
string combinedText = "";
int startOfWindow = 0;
foreach (var sampleText in sampleTexts)
{
combinedText += sampleText;
byte[] bytes = Encoding.UTF8.GetBytes(sampleText);
bundleHelper.WriteChunk(startOfWindow, bytes);
startOfWindow += bytes.Length;
}
Assert.That(combinedText, Is.EqualTo(File.ReadAllText(bundleHelper.BundlePath)));
}
}
public void WriteChunk_Text_WriteOk()
{
using (var e = new PullStorageEnvForTest())
{
var bundleHelper = new PullStorageManager(e.BaseFolder.Path, "randomHash");
string sampleText = "some sample text";
byte[] bytes = Encoding.UTF8.GetBytes(sampleText);
bundleHelper.WriteChunk(0, bytes);
string fromFile = File.ReadAllText(bundleHelper.BundlePath);
Assert.That(sampleText, Is.EqualTo(fromFile));
}
}
public void StartOfWindow_WriteBytes_LengthOfBytes()
{
using (var e = new PullStorageEnvForTest())
{
var bundleHelper = new PullStorageManager(e.BaseFolder.Path, "randomHash");
string sampleText = "some sample text";
byte[] bytes = Encoding.UTF8.GetBytes(sampleText);
bundleHelper.WriteChunk(0, bytes);
Assert.That(bundleHelper.StartOfWindow, Is.EqualTo(bytes.Length));
}
}
