private async Task ExecuteAsync(
VsrModule module,
IReadOnlyList <IGitRef> refs,
IObserver <GitRevision> subject,
RefFilterOptions refFilterOptions,
string branchFilter,
string revisionFilter,
string pathFilter,
[CanBeNull] Func <GitRevision, bool> revisionPredicate)
{
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
var token = _cancellationTokenSequence.Next();
var revisionCount = 0;
await TaskScheduler.Default;
token.ThrowIfCancellationRequested();
var branchName = module.IsValidVersionrWorkingDir()
? module.GetSelectedBranch()
: "";
token.ThrowIfCancellationRequested();
UpdateSelectedRef(module, refs, branchName);
var refsByObjectId = refs.ToLookup(head => head.ObjectId);
token.ThrowIfCancellationRequested();
var arguments = BuildArguments(refFilterOptions, branchFilter, revisionFilter, pathFilter);
#if TRACE
var sw = Stopwatch.StartNew();
#endif
var versions = module.GetLog(1000); // TODO: VSR - limit is in revisionFilter variable
foreach (var version in versions)
{
token.ThrowIfCancellationRequested();
var revision = new GitRevision(new ObjectId(version.ID))
{
ParentIds = version.Parent.HasValue ? new[] { new ObjectId(version.Parent.Value) } : null,
TreeGuid = null, // TODO: VSR
Author = version.Author,
AuthorEmail = version.Email,
AuthorDate = version.Timestamp, // TODO: VSR
Committer = version.Author, // TODO: VSR
CommitterEmail = version.Email, // TODO: VSR
CommitDate = version.Timestamp,
MessageEncoding = null, // TODO: VSR
Subject = version.Message,
Body = version.Message, // TODO: VSR
Name = version.ShortName, // TODO: VSR
HasMultiLineMessage = false, // TODO: VSR - !ReferenceEquals(Subject, Body),
HasNotes = false
};
if (revisionPredicate == null || revisionPredicate(revision))
{
// The full commit message body is used initially in InMemFilter, after which it isn't
// strictly needed and can be re-populated asynchronously.
//
// We keep full multiline message bodies within the last six months.
// Commits earlier than that have their properties set to null and the
// memory will be GCd.
if (DateTime.Now - revision.AuthorDate > TimeSpan.FromDays(30 * 6))
{
revision.Body = null;
}
// Look up any refs associated with this revision
revision.Refs = refsByObjectId[revision.ObjectId].AsReadOnlyList();
revisionCount++;
subject.OnNext(revision);
}
}
// This property is relatively expensive to call for every revision, so
// cache it for the duration of the loop.
var logOutputEncoding = module.LogOutputEncoding;
if (!token.IsCancellationRequested)
{
subject.OnCompleted();
}
}