internal CherryPickProcessor(ObjectRepositoryCherryPick objectRepositoryCherryPick,
ComputeTreeChangesFactory computeTreeChangesFactory, ObjectRepositorySerializerFactory serializerFactory)
{
if (serializerFactory == null)
{
throw new ArgumentNullException(nameof(serializerFactory));
}
_cherryPick = objectRepositoryCherryPick ?? throw new ArgumentNullException(nameof(objectRepositoryCherryPick));
_computeTreeChangesFactory = computeTreeChangesFactory ?? throw new ArgumentNullException(nameof(computeTreeChangesFactory));
_serializer = serializerFactory(new ModelObjectSerializationContext(objectRepositoryCherryPick.Repository.Container));
}
internal RebaseProcessor(ObjectRepositoryRebase objectRepositoryRebase,
ComputeTreeChangesFactory computeTreeChangesFactory, ObjectRepositorySerializerFactory serializerFactory)
{
if (serializerFactory == null)
{
throw new ArgumentNullException(nameof(serializerFactory));
}
_rebase = objectRepositoryRebase ?? throw new ArgumentNullException(nameof(objectRepositoryRebase));
_computeTreeChangesFactory = computeTreeChangesFactory ?? throw new ArgumentNullException(nameof(computeTreeChangesFactory));
_serializer = serializerFactory(new ModelObjectSerializationContext(objectRepositoryRebase.Repository.Container));
}
internal static ObjectRepositoryDelete ComputeChanges_Deleted(IObjectRepositorySerializer serializer, IRepository repository, PatchEntryChanges change, Func <string, string> relativeFileDataResolver, Func <string, IList <TreeEntryChanges> > deletionConflictProvider = null)
{
// Only data file changes have to be taken into account
// Changes made to the blobs will product a 'modified' change as well
if (System.IO.Path.GetFileName(change.Path) != FileSystemStorage.DataFile)
{
return(null);
}
var conflicts = deletionConflictProvider?.Invoke(change.Path);
if (conflicts?.Any() ?? false)
{
throw new NotImplementedException("Node deletion while children have been added or modified in head is not supported.");
}
var mergeBaseObject = serializer.Deserialize(repository.Lookup <Blob>(change.OldOid).GetContentStream(), relativeFileDataResolver);
return(new ObjectRepositoryDelete(change.Path, mergeBaseObject.Id));
}
private static IEnumerable <IMigration> GetCommitMigrations(IRepository repository, Commit previousCommit, Commit commit, IObjectRepositorySerializer serializer)
{
using (var changes = repository.Diff.Compare <TreeChanges>(previousCommit.Tree, commit.Tree))
{
foreach (var change in changes.Where(c => c.Path.StartsWith(FileSystemStorage.MigrationFolder, StringComparison.OrdinalIgnoreCase) && (c.Status == ChangeKind.Added || c.Status == ChangeKind.Modified)))
{
var blob = (Blob)commit[change.Path].Target;
yield return((IMigration)serializer.Deserialize(blob.GetContentStream(),
relativePath => (commit[change.Path.GetSiblingFile(relativePath)]?.Target as Blob)?.GetContentText() ?? string.Empty));
}
}
}
internal static void UpdateTreeDefinition(this IRepository repository, ObjectRepositoryChangeCollection changes, TreeDefinition definition, IObjectRepositorySerializer serializer, Commit oldCommit = null)
{
if (repository == null)
{
throw new ArgumentNullException(nameof(repository));
}
if (definition == null)
{
throw new ArgumentNullException(nameof(definition));
}
UpdateChangeTreeDefinitions(repository, changes.Modified, definition, serializer);
UpdateChangeTreeDefinitions(repository, changes.Added, definition, serializer);
UpdateDeletionTreeDefinitions(changes.Deleted, definition, oldCommit);
UpdateIndexTreeDefinitions(repository, changes, definition, serializer);
}
internal static Commit CommitChanges(this IRepository repository, ObjectRepositoryChangeCollection changes, IObjectRepositorySerializer serializer, string message, Signature author, Signature committer, GitHooks hooks, CommitOptions options = null, Commit mergeParent = null)
{
TreeDefinition definition;
Commit startCommit;
if (changes.OldRepository?.CommitId != null)
{
if (repository.Head.Tip.Id != changes.OldRepository.CommitId)
{
throw new GitObjectDbException("Changes are not based on the HEAD commit.");
}
startCommit = repository.Lookup <Commit>(changes.OldRepository.CommitId);
definition = TreeDefinition.From(startCommit);
}
else if (repository.Info.IsHeadUnborn)
{
startCommit = null;
definition = new TreeDefinition();
}
else
{
throw new GitObjectDbException("Changes are not based on the HEAD commit.");
}
if (!hooks.OnCommitStarted(changes, message))
{
return(null);
}
repository.UpdateTreeDefinition(changes, definition, serializer, startCommit);
var result = Commit(repository, definition, message, author, committer, options, mergeParent);
hooks.OnCommitCompleted(changes, message, result.Id);
return(result);
}
private static bool UpdateAndSerializerIndex(IObjectRepositoryIndex index, ObjectRepositoryChangeCollection changes, IObjectRepositorySerializer serializer, StringBuilder buffer, bool fullScan)
{
buffer.Clear();
var binding = index.DataAccessor.ConstructorParameterBinding;
var updatedIndex = fullScan ? index.FullScan() : index.Update(changes);
if (updatedIndex == null)
{
return(false);
}
var cloned = (IObjectRepositoryIndex)binding.Cloner(index,
(instance, propertyName, type, fallback) =>
propertyName == nameof(IObjectRepositoryIndex.Values) ? updatedIndex : fallback,
(childProperty, children, @new, dataAccessor) =>
throw new NotSupportedException("Index should not contain child properties."));
serializer.Serialize(cloned, buffer);
return(true);
}
private static void UpdateIndexTreeDefinitions(IRepository repository, ObjectRepositoryChangeCollection changes, TreeDefinition definition, IObjectRepositorySerializer serializer)
{
var buffer = new StringBuilder();
foreach (var index in changes.NewRepository.Indexes)
{
var fullScan = changes.Added.Any(c => c.New.Id == index.Id);
if (UpdateAndSerializerIndex(index, changes, serializer, buffer, fullScan))
{
definition.Add(index.GetDataPath(), repository.CreateBlob(buffer), Mode.NonExecutableFile);
}
}
}
private static void UpdateChangeTreeDefinitions(IRepository repository, IEnumerable <ObjectRepositoryEntryChanges> changes, TreeDefinition definition, IObjectRepositorySerializer serializer)
{
var buffer = new StringBuilder();
foreach (var change in changes)
{
if (change.New is IObjectRepositoryIndex index)
{
// Index are managed separately
continue;
}
buffer.Clear();
var nested = serializer.Serialize(change.New, buffer);
definition.Add(change.Path, repository.CreateBlob(buffer), Mode.NonExecutableFile);
foreach (var info in nested)
{
var nestedPath = change.New.GetDataPath(info.FileName);
definition.Add(nestedPath, repository.CreateBlob(info.Data), Mode.NonExecutableFile);
}
}
}
internal static ObjectRepositoryAdd ComputeChanges_Added(IObjectRepository objectRepository, IObjectRepositorySerializer serializer, IRepository repository, PatchEntryChanges change, Func <string, string> relativeFileDataResolver)
{
// Only data file changes have to be taken into account
// Changes made to the blobs will product a 'modified' change as well
if (System.IO.Path.GetFileName(change.Path) != FileSystemStorage.DataFile)
{
return(null);
}
if (objectRepository.TryGetFromGitPath(change.Path) != null)
{
throw new NotImplementedException("Node already present in current state.");
}
var parentDataPath = change.Path.GetDataParentDataPath();
if (objectRepository.TryGetFromGitPath(parentDataPath) == null)
{
throw new NotImplementedException("Node addition while parent has been deleted in head is not supported.");
}
var @new = serializer.Deserialize(repository.Lookup <Blob>(change.Oid).GetContentStream(), relativeFileDataResolver);
var parentId = change.Path.GetDataParentId(objectRepository);
return(new ObjectRepositoryAdd(change.Path, @new, parentId));
}
internal static IEnumerable <ObjectRepositoryPropertyChange> ComputeChanges_Modified(IObjectRepository objectRepository, IObjectRepositorySerializer serializer, PatchEntryChanges change, Func <string, Blob> relativeFileDataResolverStart, Func <string, Blob> relativeFileDataResolverEnd)
{
// Get data file path, in the case where a blob has changed
var dataPath = change.Path.GetSiblingFile(FileSystemStorage.DataFile);
var currentObject = objectRepository.TryGetFromGitPath(dataPath) ??
throw new NotImplementedException($"Conflict as a modified node {change.Path} has been deleted in current rebase state.");
var changeStart = serializer.Deserialize(
relativeFileDataResolverStart(FileSystemStorage.DataFile)?.GetContentStream() ?? throw new GitObjectDbException("Change start content could not be found."),
relativePath => relativeFileDataResolverStart(relativePath)?.GetContentText() ?? string.Empty);
var changeEnd = serializer.Deserialize(
relativeFileDataResolverEnd(FileSystemStorage.DataFile)?.GetContentStream() ?? throw new GitObjectDbException("Change end content could not be found."),
relativePath => relativeFileDataResolverEnd(relativePath)?.GetContentText() ?? string.Empty);
var changes = ObjectRepositoryMerge.ComputeModifiedProperties(change, changeStart, changeEnd, currentObject);
// Indexes will be recomputed anyways from the changes when committed,
// so there is no need to track them in the modified chunks
var changesWithoutIndexes = changes.Where(
modifiedProperty => !typeof(IObjectRepositoryIndex).IsAssignableFrom(modifiedProperty.Property.Property.ReflectedType));
return(changesWithoutIndexes);
}
