private void HandleLockRequest(NamedPipeServer.Connection connection, NamedPipeMessages.Message message)
{
NamedPipeMessages.AcquireLock.Response response;
NamedPipeMessages.AcquireLock.Data externalHolder;
NamedPipeMessages.AcquireLock.Request request = new NamedPipeMessages.AcquireLock.Request(message);
NamedPipeMessages.AcquireLock.Data requester = request.RequestData;
if (request == null)
{
response = new NamedPipeMessages.AcquireLock.Response(NamedPipeMessages.UnknownRequest, requester);
}
else if (this.currentState != MountState.Ready)
{
response = new NamedPipeMessages.AcquireLock.Response(NamedPipeMessages.AcquireLock.MountNotReadyResult);
}
else
{
bool lockAcquired = this.gvfsLock.TryAcquireLock(requester, out externalHolder);
if (lockAcquired)
{
response = new NamedPipeMessages.AcquireLock.Response(NamedPipeMessages.AcquireLock.AcceptResult);
}
else if (externalHolder == null)
{
response = new NamedPipeMessages.AcquireLock.Response(NamedPipeMessages.AcquireLock.DenyGVFSResult);
}
else
{
response = new NamedPipeMessages.AcquireLock.Response(NamedPipeMessages.AcquireLock.DenyGitResult, externalHolder);
}
}
connection.TrySendResponse(response.CreateMessage());
}
private static void AcquireGlobalLock(string[] args)
{
try
{
if (ShouldLock(args))
{
GVFSEnlistment enlistment = GVFSEnlistment.CreateFromCurrentDirectory(null, GitProcess.GetInstalledGitBinPath());
if (enlistment == null)
{
ExitWithError("This hook must be run from a GVFS repo");
}
if (EnlistmentIsReady(enlistment))
{
string fullCommand = "git " + string.Join(" ", args.Skip(1));
int pid = ProcessHelper.GetParentProcessId("git.exe");
Process parentProcess = null;
if (pid == GVFSConstants.InvalidProcessId ||
!ProcessHelper.TryGetProcess(pid, out parentProcess))
{
ExitWithError("GVFS.Hooks: Unable to find parent git.exe process " + "(PID: " + pid + ").");
}
using (NamedPipeClient pipeClient = new NamedPipeClient(enlistment.NamedPipeName))
{
if (!pipeClient.Connect())
{
ExitWithError("The enlistment does not appear to be mounted. Use 'gvfs status' to check.");
}
NamedPipeMessages.AcquireLock.Request request =
new NamedPipeMessages.AcquireLock.Request(pid, fullCommand, ProcessHelper.GetCommandLine(parentProcess));
NamedPipeMessages.Message requestMessage = request.CreateMessage();
pipeClient.SendRequest(requestMessage);
NamedPipeMessages.AcquireLock.Response response = new NamedPipeMessages.AcquireLock.Response(pipeClient.ReadResponse());
if (response.Result == NamedPipeMessages.AcquireLock.AcceptResult)
{
return;
}
else if (response.Result == NamedPipeMessages.AcquireLock.MountNotReadyResult)
{
ExitWithError("GVFS has not finished initializing, please wait a few seconds and try again.");
}
else
{
int retries = 0;
char[] waiting = { '\u2014', '\\', '|', '/' };
string message = string.Empty;
while (true)
{
if (response.Result == NamedPipeMessages.AcquireLock.AcceptResult)
{
if (!Console.IsOutputRedirected)
{
Console.WriteLine("\r{0}...", message);
}
return;
}
else if (response.Result == NamedPipeMessages.AcquireLock.DenyGVFSResult)
{
message = "Waiting for GVFS to release the lock";
}
else if (response.Result == NamedPipeMessages.AcquireLock.DenyGitResult)
{
message = string.Format("Waiting for '{0}' to release the lock", response.ResponseData.ParsedCommand);
}
else
{
ExitWithError("Error when acquiring the lock. Unrecognized response: " + response.CreateMessage());
tracer.RelatedError("Unknown LockRequestResponse: " + response);
}
if (Console.IsOutputRedirected && retries == 0)
{
Console.WriteLine("{0}...", message);
}
else if (!Console.IsOutputRedirected)
{
Console.Write("\r{0}..{1}", message, waiting[retries % waiting.Length]);
}
Thread.Sleep(500);
pipeClient.SendRequest(requestMessage);
response = new NamedPipeMessages.AcquireLock.Response(pipeClient.ReadResponse());
retries++;
}
}
}
}
}
}
catch (Exception e)
{
EventMetadata metadata = new EventMetadata();
metadata.Add("Error", e.ToString());
tracer.RelatedError(metadata);
ExitWithError(
"Unable to initialize Git command.",
"Ensure that GVFS is running.");
}
}