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Merge pull request #569 from KindDragon/changeset_id_cache

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`FindCommitByChangesetId` cache added
This commit is contained in:
Matt Burke
2014-04-10 09:52:10 -04:00
parent 3efaea75e8 ea5fed7914
commit 37e5510c55
1 changed files with 31 additions and 2 deletions
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GitTfs/Core/GitRepository.cs
+31 -2
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@@ -44,6 +44,7 @@ namespace Sep.Git.Tfs.Core
false,
logEntry.Tree,
parents);
changesetsCache[logEntry.ChangesetId] = commit.Sha;
return new GitCommit(commit);
}
@@ -475,6 +476,9 @@ namespace Sep.Git.Tfs.Core
return reference != null;
}
private readonly Dictionary<long, string> changesetsCache = new Dictionary<long, string>();
private bool cacheIsFull = false;
public string FindCommitHashByChangesetId(long changesetId)
{
var commit = FindCommitByChangesetId(changesetId);
@@ -484,11 +488,20 @@ namespace Sep.Git.Tfs.Core
return commit.Sha;
}
private readonly Regex tfsIdRegex = new Regex("^git-tfs-id: .*;C([0-9]+)$", RegexOptions.Singleline | RegexOptions.Compiled);
private Commit FindCommitByChangesetId(long changesetId, string remoteRef = null)
{
Trace.WriteLine("Looking for changeset " + changesetId + " in git repository...");
var regex = new Regex("git-tfs-id: .*;C" + changesetId + "[^0-9]", RegexOptions.Singleline | RegexOptions.Compiled);
if (remoteRef == null)
{
string sha;
if (changesetsCache.TryGetValue(changesetId, out sha))
return _repository.Lookup<Commit>(sha);
if (cacheIsFull)
return null;
}
var reachableFromRemoteBranches = new CommitFilter
{
@@ -500,7 +513,23 @@ namespace Sep.Git.Tfs.Core
reachableFromRemoteBranches.Since = _repository.Branches.Where(p => p.IsRemote && p.CanonicalName.EndsWith(remoteRef));
var commitsFromRemoteBranches = _repository.Commits.QueryBy(reachableFromRemoteBranches);
var commit = commitsFromRemoteBranches.FirstOrDefault(c => regex.IsMatch(c.Message));
Commit commit = null;
foreach (var c in commitsFromRemoteBranches)
{
var match = tfsIdRegex.Match(commit.Message);
if (match.Success)
{
int id = int.Parse(match.Groups[1].Value);
changesetsCache[id] = c.Sha;
if (id == changesetId)
{
commit = c;
break;
}
}
}
if (remoteRef == null && commit == null)
cacheIsFull = true; // repository fully scanned
Trace.WriteLine((commit == null) ? " => Commit not found!" : " => Commit found! hash: " + commit.Sha);
return commit;
}