public void CanInvalidateCleanCache()
{
this.enlistmentDirectory.CreateFile(Path.Combine(this.gvfsMetadataPath, GVFSConstants.DotGVFS.GitStatusCache.CachePath), "Git status cache contents", createDirectories: true);
using (GitStatusCache statusCache = new GitStatusCache(this.context, TimeSpan.Zero))
{
statusCache.Initialize();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
// Refresh the cache to put it into the clean state.
statusCache.RefreshAndWait();
bool result = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out _);
result.ShouldBeTrue();
statusCache.IsCacheReadyAndUpToDate().ShouldBeTrue();
// Invalidate the cache, and make sure that it transistions into
// the dirty state, and that commands are still allowed through.
statusCache.Invalidate();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
result = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out _);
result.ShouldBeTrue();
// After checking if we are ready for external lock requests, cache should still be dirty
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
statusCache.Shutdown();
}
}
private void MountAndStartWorkingDirectoryCallbacks(CacheServerInfo cache)
{
string error;
if (!this.context.Enlistment.Authentication.TryInitialize(this.context.Tracer, this.context.Enlistment, out error))
{
this.FailMountAndExit("Failed to obtain git credentials: " + error);
}
GitObjectsHttpRequestor objectRequestor = new GitObjectsHttpRequestor(this.context.Tracer, this.context.Enlistment, cache, this.retryConfig);
this.gitObjects = new GVFSGitObjects(this.context, objectRequestor);
FileSystemVirtualizer virtualizer = this.CreateOrReportAndExit(() => GVFSPlatformLoader.CreateFileSystemVirtualizer(this.context, this.gitObjects), "Failed to create src folder virtualizer");
GitStatusCache gitStatusCache = (!this.context.Unattended && GVFSPlatform.Instance.IsGitStatusCacheSupported()) ? new GitStatusCache(this.context, this.gitStatusCacheConfig) : null;
if (gitStatusCache != null)
{
this.tracer.RelatedInfo("Git status cache enabled. Backoff time: {0}ms", this.gitStatusCacheConfig.BackoffTime.TotalMilliseconds);
}
else
{
this.tracer.RelatedInfo("Git status cache is not enabled");
}
this.fileSystemCallbacks = this.CreateOrReportAndExit(() => new FileSystemCallbacks(this.context, this.gitObjects, RepoMetadata.Instance, virtualizer, gitStatusCache), "Failed to create src folder callback listener");
this.maintenanceScheduler = this.CreateOrReportAndExit(() => new GitMaintenanceScheduler(this.context, this.gitObjects), "Failed to start maintenance scheduler");
int majorVersion;
int minorVersion;
if (!RepoMetadata.Instance.TryGetOnDiskLayoutVersion(out majorVersion, out minorVersion, out error))
{
this.FailMountAndExit("Error: {0}", error);
}
if (majorVersion != GVFSPlatform.Instance.DiskLayoutUpgrade.Version.CurrentMajorVersion)
{
this.FailMountAndExit(
"Error: On disk version ({0}) does not match current version ({1})",
majorVersion,
GVFSPlatform.Instance.DiskLayoutUpgrade.Version.CurrentMajorVersion);
}
try
{
if (!this.fileSystemCallbacks.TryStart(out error))
{
this.FailMountAndExit("Error: {0}. \r\nPlease confirm that gvfs clone completed without error.", error);
}
}
catch (Exception e)
{
this.FailMountAndExit("Failed to initialize src folder callbacks. {0}", e.ToString());
}
this.heartbeat = new HeartbeatThread(this.tracer, this.fileSystemCallbacks);
this.heartbeat.Start();
}
public void Dispose()
{
if (this.BlobSizes != null)
{
this.BlobSizes.Dispose();
this.BlobSizes = null;
}
if (this.fileSystemVirtualizer != null)
{
this.fileSystemVirtualizer.Dispose();
this.fileSystemVirtualizer = null;
}
if (this.GitIndexProjection != null)
{
this.GitIndexProjection.Dispose();
this.GitIndexProjection = null;
}
if (this.modifiedPaths != null)
{
this.modifiedPaths.Dispose();
this.modifiedPaths = null;
}
if (this.gitStatusCache != null)
{
this.gitStatusCache.Dispose();
this.gitStatusCache = null;
}
if (this.backgroundFileSystemTaskRunner != null)
{
this.backgroundFileSystemTaskRunner.Dispose();
this.backgroundFileSystemTaskRunner = null;
}
if (this.context != null)
{
this.context.Dispose();
this.context = null;
}
}
public void CacheFileErrorShouldBlock()
{
this.fileSystem.DeleteFileThrowsException = true;
this.enlistmentDirectory.CreateFile(Path.Combine(this.gvfsMetadataPath, GVFSConstants.DotGVFS.GitStatusCache.CachePath), "Git status cache contents", createDirectories: true);
using (GitStatusCache statusCache = new GitStatusCache(this.context, TimeSpan.Zero))
{
statusCache.Initialize();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
bool isReady = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out _);
isReady.ShouldBeFalse();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
statusCache.Shutdown();
}
}
private void MountAndStartWorkingDirectoryCallbacks(CacheServerInfo cache)
{
string error;
if (!this.context.Enlistment.Authentication.TryInitialize(this.context.Tracer, this.context.Enlistment, out error))
{
this.FailMountAndExit("Failed to obtain git credentials: " + error);
}
GitObjectsHttpRequestor objectRequestor = new GitObjectsHttpRequestor(this.context.Tracer, this.context.Enlistment, cache, this.retryConfig);
this.gitObjects = new GSDGitObjects(this.context, objectRequestor);
GitStatusCache gitStatusCache = (!this.context.Unattended && GSDPlatform.Instance.IsGitStatusCacheSupported()) ? new GitStatusCache(this.context, this.gitStatusCacheConfig) : null;
if (gitStatusCache != null)
{
this.tracer.RelatedInfo("Git status cache enabled. Backoff time: {0}ms", this.gitStatusCacheConfig.BackoffTime.TotalMilliseconds);
}
else
{
this.tracer.RelatedInfo("Git status cache is not enabled");
}
this.maintenanceScheduler = this.CreateOrReportAndExit(() => new GitMaintenanceScheduler(this.context, this.gitObjects), "Failed to start maintenance scheduler");
int majorVersion;
int minorVersion;
if (!RepoMetadata.Instance.TryGetOnDiskLayoutVersion(out majorVersion, out minorVersion, out error))
{
this.FailMountAndExit("Error: {0}", error);
}
if (majorVersion != GSDPlatform.Instance.DiskLayoutUpgrade.Version.CurrentMajorVersion)
{
this.FailMountAndExit(
"Error: On disk version ({0}) does not match current version ({1})",
majorVersion,
GSDPlatform.Instance.DiskLayoutUpgrade.Version.CurrentMajorVersion);
}
}
public void OnExecute(CommandEventArgs e)
{
if (_commandService == null)
{
_commandService = e.GetService <IAnkhCommandService>();
}
if (_fileCache == null)
{
_fileCache = e.GetService <GitStatusCache>(typeof(IGitStatusCache));
}
_commandService.TockCommand(e.Command);
if (e.Command == AnkhCommand.GitCacheFinishTasks)
{
_fileCache.OnCleanup();
}
else
{
_fileCache.BroadcastChanges();
}
}
public void CanRefreshCache()
{
this.enlistmentDirectory.CreateFile(Path.Combine(this.gvfsMetadataPath, GVFSConstants.DotGVFS.GitStatusCache.CachePath), "Git status cache contents", createDirectories: true);
using (GitStatusCache statusCache = new GitStatusCache(this.context, TimeSpan.Zero))
{
statusCache.Initialize();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
string message;
bool result = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out message);
result.ShouldBeTrue();
statusCache.RefreshAndWait();
result = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out message);
result.ShouldBeTrue();
statusCache.IsCacheReadyAndUpToDate().ShouldBeTrue();
statusCache.Shutdown();
}
}
public void HandlesExceptionsCreatingDirectory(Exception exceptionToThrow)
{
this.enlistmentDirectory.CreateFile(Path.Combine(this.gvfsMetadataPath, GSDConstants.DotGSD.GitStatusCache.CachePath), "Git status cache contents", createDirectories: true);
this.fileSystem.ExceptionThrownByCreateDirectory = exceptionToThrow;
using (GitStatusCache statusCache = new GitStatusCache(this.context, TimeSpan.Zero))
{
statusCache.Initialize();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
string message;
bool result = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out message);
result.ShouldBeTrue();
statusCache.RefreshAndWait();
result = statusCache.IsReadyForExternalAcquireLockRequests(statusCommandLockData, out message);
result.ShouldBeTrue();
statusCache.IsCacheReadyAndUpToDate().ShouldBeFalse();
statusCache.Shutdown();
}
}
public FileSystemCallbacks(
GVFSContext context,
GVFSGitObjects gitObjects,
RepoMetadata repoMetadata,
BlobSizes blobSizes,
GitIndexProjection gitIndexProjection,
BackgroundFileSystemTaskRunner backgroundFileSystemTaskRunner,
FileSystemVirtualizer fileSystemVirtualizer,
GitStatusCache gitStatusCache = null)
{
this.logsHeadFileProperties = null;
this.postFetchJobLock = new object();
this.context = context;
this.gitObjects = gitObjects;
this.fileSystemVirtualizer = fileSystemVirtualizer;
this.placeHolderCreationCount = new ConcurrentDictionary <string, PlaceHolderCreateCounter>(StringComparer.OrdinalIgnoreCase);
this.newlyCreatedFileAndFolderPaths = new ConcurrentHashSet <string>(StringComparer.OrdinalIgnoreCase);
string error;
if (!ModifiedPathsDatabase.TryLoadOrCreate(
this.context.Tracer,
Path.Combine(this.context.Enlistment.DotGVFSRoot, GVFSConstants.DotGVFS.Databases.ModifiedPaths),
this.context.FileSystem,
out this.modifiedPaths,
out error))
{
throw new InvalidRepoException(error);
}
this.BlobSizes = blobSizes;
this.BlobSizes.Initialize();
PlaceholderListDatabase placeholders;
if (!PlaceholderListDatabase.TryCreate(
this.context.Tracer,
Path.Combine(this.context.Enlistment.DotGVFSRoot, GVFSConstants.DotGVFS.Databases.PlaceholderList),
this.context.FileSystem,
out placeholders,
out error))
{
throw new InvalidRepoException(error);
}
this.GitIndexProjection = gitIndexProjection ?? new GitIndexProjection(
context,
gitObjects,
this.BlobSizes,
repoMetadata,
fileSystemVirtualizer,
placeholders,
this.modifiedPaths);
if (backgroundFileSystemTaskRunner != null)
{
this.backgroundFileSystemTaskRunner = backgroundFileSystemTaskRunner;
this.backgroundFileSystemTaskRunner.SetCallbacks(
this.PreBackgroundOperation,
this.ExecuteBackgroundOperation,
this.PostBackgroundOperation);
}
else
{
this.backgroundFileSystemTaskRunner = new BackgroundFileSystemTaskRunner(
this.context,
this.PreBackgroundOperation,
this.ExecuteBackgroundOperation,
this.PostBackgroundOperation,
Path.Combine(context.Enlistment.DotGVFSRoot, GVFSConstants.DotGVFS.Databases.BackgroundFileSystemTasks));
}
this.enableGitStatusCache = gitStatusCache != null;
// If the status cache is not enabled, create a dummy GitStatusCache that will never be initialized
// This lets us from having to add null checks to callsites into GitStatusCache.
this.gitStatusCache = gitStatusCache ?? new GitStatusCache(context, TimeSpan.Zero);
this.logsHeadPath = Path.Combine(this.context.Enlistment.WorkingDirectoryRoot, GVFSConstants.DotGit.Logs.Head);
EventMetadata metadata = new EventMetadata();
metadata.Add("placeholders.Count", placeholders.EstimatedCount);
metadata.Add("background.Count", this.backgroundFileSystemTaskRunner.Count);
metadata.Add(TracingConstants.MessageKey.InfoMessage, $"{nameof(FileSystemCallbacks)} created");
this.context.Tracer.RelatedEvent(EventLevel.Informational, $"{nameof(FileSystemCallbacks)}_Constructor", metadata);
}
public FileSystemCallbacks(GVFSContext context, GVFSGitObjects gitObjects, RepoMetadata repoMetadata, FileSystemVirtualizer fileSystemVirtualizer, GitStatusCache gitStatusCache)
: this(
context,
gitObjects,
repoMetadata,
new BlobSizes(context.Enlistment.BlobSizesRoot, context.FileSystem, context.Tracer),
gitIndexProjection : null,
backgroundFileSystemTaskRunner : null,
fileSystemVirtualizer : fileSystemVirtualizer,
gitStatusCache : gitStatusCache)
{
}
