internal virtual void execute(ProgressMonitor monitor, FetchResult result)
{
_askFor.Clear();
_localUpdates.Clear();
_fetchHeadUpdates.Clear();
_packLocks.Clear();
try
{
executeImp(monitor, result);
}
finally
{
foreach (PackLock @lock in _packLocks)
{
@lock.Unlock();
}
}
}
/// <summary>
/// Fetch objects and refs from the remote repository to the local one.
/// <para/>
/// This is a utility function providing standard fetch behavior. Local
/// tracking refs associated with the remote repository are automatically
/// updated if this transport was created from a <see cref="RemoteConfig"/> with
/// fetch RefSpecs defined.
/// </summary>
/// <param name="monitor">
/// progress monitor to inform the user about our processing
/// activity. Must not be null. Use <see cref="NullProgressMonitor"/> if
/// progress updates are not interesting or necessary.
/// </param>
/// <param name="toFetch">
/// specification of refs to fetch locally. May be null or the
/// empty collection to use the specifications from the
/// RemoteConfig. Source for each RefSpec can't be null.
/// </param>
/// <returns>information describing the tracking refs updated.</returns>
public FetchResult fetch(ProgressMonitor monitor, List <RefSpec> toFetch)
{
if (toFetch == null || toFetch.isEmpty())
{
// If the caller did not ask for anything use the defaults.
//
if (_fetch.isEmpty())
{
throw new TransportException("Nothing to fetch.");
}
toFetch = _fetch;
}
else if (!_fetch.isEmpty())
{
// If the caller asked for something specific without giving
// us the local tracking branch see if we can update any of
// the local tracking branches without incurring additional
// object transfer overheads.
//
var tmp = new List <RefSpec>(toFetch);
foreach (RefSpec requested in toFetch)
{
string reqSrc = requested.Source;
foreach (RefSpec configured in _fetch)
{
string cfgSrc = configured.Source;
string cfgDst = configured.Destination;
if (cfgSrc.Equals(reqSrc) && cfgDst != null)
{
tmp.Add(configured);
break;
}
}
}
toFetch = tmp;
}
var result = new FetchResult();
new FetchProcess(this, toFetch).execute(monitor, result);
return(result);
}
private void deleteStaleTrackingRefs(FetchResult result, RevWalk.RevWalk walk)
{
Repository db = _transport.Local;
foreach (Ref @ref in db.getAllRefs().Values)
{
string refname = @ref.Name;
foreach (RefSpec spec in _toFetch)
{
if (spec.MatchDestination(refname))
{
RefSpec s = spec.ExpandFromDestination(refname);
if (result.GetAdvertisedRef(s.Source) == null)
{
deleteTrackingRef(result, db, walk, s, @ref);
}
}
}
}
}
public override void Execute()
{
Transport tn = Transport.open(Repository._internal_repo, Remote);
if (Prune != null)
tn.RemoveDeletedRefs = Prune.Value;
if (Thin != null)
tn.FetchThin = Thin.Value;
tn.DryRun = DryRun;
try
{
Result = tn.fetch(ProgressMonitor, RefSpecs);
if (Result.TrackingRefUpdates.Count == 0)
return;
}
finally
{
tn.Dispose();
}
showFetchResult(tn, Result);
}
internal virtual void execute(ProgressMonitor monitor, FetchResult result)
{
_askFor.Clear();
_localUpdates.Clear();
_fetchHeadUpdates.Clear();
_packLocks.Clear();
try
{
executeImp(monitor, result);
}
finally
{
foreach (PackLock @lock in _packLocks)
{
if (@lock != null)
{
@lock.Unlock();
}
}
}
}
protected void showFetchResult(GitSharp.Core.Transport.Transport tn, FetchResult r)
{
bool shownURI = false;
foreach (TrackingRefUpdate u in r.TrackingRefUpdates)
{
if (!verbose && u.Result == RefUpdate.RefUpdateResult.NoChange)
continue;
char type = shortTypeOf(u.Result);
string longType = longTypeOf(u);
string src = AbbreviateRef(u.RemoteName, false);
string dst = AbbreviateRef(u.LocalName, true);
if (!shownURI)
{
OutputStream.Write("From ");
OutputStream.WriteLine(tn.Uri);
shownURI = true;
}
OutputStream.WriteLine(" " + type + " " + longType + " " + src + " -> " + dst);
}
}
private void updateFETCH_HEAD(FetchResult result)
{
LockFile @lock = new LockFile(new FileInfo(Path.Combine(_transport.Local.Directory.FullName, "FETCH_HEAD")));
try
{
if (@lock.Lock())
{
StreamWriter w = new StreamWriter(@lock.GetOutputStream());
try
{
foreach (FetchHeadRecord h in _fetchHeadUpdates)
{
h.Write(w);
result.Add(h);
}
}
finally
{
w.Close();
}
@lock.Commit();
}
}
finally
{
@lock.Unlock();
}
}
private void executeImp(ProgressMonitor monitor, FetchResult result)
{
_connection = _transport.openFetch();
try
{
result.SetAdvertisedRefs(_transport.Uri, _connection.RefsMap);
HashSet<Ref> matched = new HashSet<Ref>();
foreach (RefSpec spec in _toFetch)
{
if (spec.Source == null)
throw new TransportException("Source ref not specified for refspec: " + spec);
if (spec.Wildcard)
{
expandWildcard(spec, matched);
}
else
{
expandSingle(spec, matched);
}
}
ICollection<Ref> additionalTags = new Collection<Ref>();
TagOpt tagopt = _transport.TagOpt;
if (tagopt == TagOpt.AUTO_FOLLOW)
{
additionalTags = expandAutoFollowTags();
}
else if (tagopt == TagOpt.FETCH_TAGS)
{
expandFetchTags();
}
bool includedTags;
if (_askFor.Count != 0 && !askForIsComplete())
{
fetchObjects(monitor);
includedTags = _connection.DidFetchIncludeTags;
// Connection was used for object transfer. If we
// do another fetch we must open a new connection.
//
closeConnection();
}
else
{
includedTags = false;
}
if (tagopt == TagOpt.AUTO_FOLLOW && additionalTags.Count != 0)
{
// There are more tags that we want to follow, but
// not all were asked for on the initial request.
foreach(ObjectId key in _askFor.Keys)
{
_have.Add(key);
}
_askFor.Clear();
foreach (Ref r in additionalTags)
{
ObjectId id = r.PeeledObjectId;
if (id == null || _transport.Local.HasObject(id))
{
wantTag(r);
}
}
if (_askFor.Count != 0 && (!includedTags || !askForIsComplete()))
{
reopenConnection();
if (_askFor.Count != 0)
{
fetchObjects(monitor);
}
}
}
}
finally
{
closeConnection();
}
using( RevWalk.RevWalk walk = new RevWalk.RevWalk(_transport.Local))
{
if (_transport.RemoveDeletedRefs)
{
deleteStaleTrackingRefs(result, walk);
}
foreach (TrackingRefUpdate u in _localUpdates)
{
try
{
u.Update(walk);
result.Add(u);
}
catch (IOException err)
{
throw new TransportException("Failure updating tracking ref " + u.LocalName + ": " + err.Message, err);
}
}
}
if (_fetchHeadUpdates.Count != 0)
{
try
{
updateFETCH_HEAD(result);
}
catch (IOException err)
{
throw new TransportException("Failure updating FETCH_HEAD: " + err.Message, err);
}
}
}
private void deleteTrackingRef(FetchResult result, Repository db, RevWalk.RevWalk walk, RefSpec spec, Ref localRef)
{
string name = localRef.Name;
try
{
TrackingRefUpdate u = new TrackingRefUpdate(db, name, spec.Source, true, ObjectId.ZeroId, "deleted");
result.Add(u);
if (_transport.DryRun)
{
return;
}
u.Delete(walk);
switch (u.Result)
{
case RefUpdate.RefUpdateResult.New:
case RefUpdate.RefUpdateResult.NoChange:
case RefUpdate.RefUpdateResult.FastForward:
case RefUpdate.RefUpdateResult.Forced:
break;
default:
throw new TransportException(_transport.Uri, "Cannot delete stale tracking ref " + name + ": " + u.Result.ToString());
}
}
catch (System.IO.IOException e)
{
throw new TransportException(_transport.Uri, "Cannot delete stale tracking ref " + name, e);
}
}
private void deleteStaleTrackingRefs(FetchResult result, RevWalk.RevWalk walk)
{
Repository db = _transport.Local;
foreach (Ref @ref in db.getAllRefs().Values)
{
string refname = @ref.Name;
foreach (RefSpec spec in _toFetch)
{
if (spec.MatchDestination(refname))
{
RefSpec s = spec.ExpandFromDestination(refname);
if (result.GetAdvertisedRef(s.Source) == null)
{
deleteTrackingRef(result, db, walk, s, @ref);
}
}
}
}
}
private static GitSharp.Core.Ref guessHEAD(FetchResult result)
{
// Some transports allow us to see where HEAD points to. If that is not so,
// we'll have to guess.
GitSharp.Core.Ref head = result.GetAdvertisedRef(Constants.HEAD);
if (head != null)
{
return head;
}
var availableHeads = result.AdvertisedRefs.Where(r => r.Name.StartsWith(Constants.R_HEADS));
// master is our preferred guess, so if it's advertised, return that.
GitSharp.Core.Ref guessedHead = result.GetAdvertisedRef(Constants.R_HEADS + Constants.MASTER);
if (guessedHead == null && availableHeads.Count() > 0)
{
// if master is not advertised, return any other head.
guessedHead = availableHeads.First();
}
return guessedHead;
}
private void deleteTrackingRef(FetchResult result, Repository db, RevWalk.RevWalk walk, RefSpec spec, Ref localRef)
{
string name = localRef.Name;
try
{
TrackingRefUpdate u = new TrackingRefUpdate(db, name, spec.Source, true, ObjectId.ZeroId, "deleted");
result.Add(u);
if (_transport.DryRun)
{
return;
}
u.Delete(walk);
switch (u.Result)
{
case RefUpdate.RefUpdateResult.NEW:
case RefUpdate.RefUpdateResult.NO_CHANGE:
case RefUpdate.RefUpdateResult.FAST_FORWARD:
case RefUpdate.RefUpdateResult.FORCED:
break;
default:
throw new TransportException(_transport.Uri, "Cannot delete stale tracking ref " + name + ": " + Enum.GetName(typeof(RefUpdate.RefUpdateResult), u.Result));
}
}
catch (IOException e)
{
throw new TransportException(_transport.Uri, "Cannot delete stale tracking ref " + name, e);
}
}
private void updateFETCH_HEAD(FetchResult result)
{
using (LockFile @lock = new LockFile(PathUtil.CombineFilePath(_transport.Local.Directory, "FETCH_HEAD")))
{
if (@lock.Lock())
{
using (StreamWriter w = new StreamWriter(@lock.GetOutputStream()))
{
foreach (FetchHeadRecord h in _fetchHeadUpdates)
{
h.Write(w);
result.Add(h);
}
}
@lock.Commit();
}
}
}
private void executeImp(ProgressMonitor monitor, FetchResult result)
{
_connection = _transport.openFetch();
try
{
result.SetAdvertisedRefs(_transport.Uri, _connection.RefsMap);
HashSet <Ref> matched = new HashSet <Ref>();
foreach (RefSpec spec in _toFetch)
{
if (spec.Source == null)
{
throw new TransportException("Source ref not specified for refspec: " + spec);
}
if (spec.Wildcard)
{
expandWildcard(spec, matched);
}
else
{
expandSingle(spec, matched);
}
}
ICollection <Ref> additionalTags = new Collection <Ref>();
TagOpt tagopt = _transport.TagOpt;
if (tagopt == TagOpt.AUTO_FOLLOW)
{
additionalTags = expandAutoFollowTags();
}
else if (tagopt == TagOpt.FETCH_TAGS)
{
expandFetchTags();
}
bool includedTags;
if (_askFor.Count != 0 && !askForIsComplete())
{
fetchObjects(monitor);
includedTags = _connection.DidFetchIncludeTags;
// Connection was used for object transfer. If we
// do another fetch we must open a new connection.
//
closeConnection();
}
else
{
includedTags = false;
}
if (tagopt == TagOpt.AUTO_FOLLOW && additionalTags.Count != 0)
{
// There are more tags that we want to follow, but
// not all were asked for on the initial request.
foreach (ObjectId key in _askFor.Keys)
{
_have.Add(key);
}
_askFor.Clear();
foreach (Ref r in additionalTags)
{
ObjectId id = r.PeeledObjectId;
if (id == null || _transport.Local.HasObject(id))
{
wantTag(r);
}
}
if (_askFor.Count != 0 && (!includedTags || !askForIsComplete()))
{
reopenConnection();
if (_askFor.Count != 0)
{
fetchObjects(monitor);
}
}
}
}
finally
{
closeConnection();
}
using (RevWalk.RevWalk walk = new RevWalk.RevWalk(_transport.Local))
{
if (_transport.RemoveDeletedRefs)
{
deleteStaleTrackingRefs(result, walk);
}
foreach (TrackingRefUpdate u in _localUpdates)
{
try
{
u.Update(walk);
result.Add(u);
}
catch (IOException err)
{
throw new TransportException("Failure updating tracking ref " + u.LocalName + ": " + err.Message, err);
}
}
}
if (_fetchHeadUpdates.Count != 0)
{
try
{
updateFETCH_HEAD(result);
}
catch (IOException err)
{
throw new TransportException("Failure updating FETCH_HEAD: " + err.Message, err);
}
}
}
private static GitSharp.Core.Ref guessHEAD(FetchResult result)
{
GitSharp.Core.Ref idHEAD = result.GetAdvertisedRef(Constants.HEAD);
List<GitSharp.Core.Ref> availableRefs = new List<GitSharp.Core.Ref>();
GitSharp.Core.Ref head = null;
foreach (GitSharp.Core.Ref r in result.AdvertisedRefs.Values)
{
string n = r.Name;
if (!n.StartsWith(Constants.R_HEADS))
continue;
availableRefs.Add(r);
if (idHEAD == null || head != null)
continue;
if (r.ObjectId.Equals(idHEAD.ObjectId))
head = r;
}
availableRefs.Sort(RefComparator.INSTANCE);
if (idHEAD != null && head == null)
head = idHEAD;
return head;
}
public FetchResult fetch(ProgressMonitor monitor, List<RefSpec> toFetch)
{
if (toFetch == null || toFetch.Count == 0)
{
if (_fetchSpecs.Count == 0)
{
throw new TransportException("Nothing to fetch.");
}
toFetch = _fetchSpecs;
}
else if (_fetchSpecs.Count != 0)
{
var tmp = new List<RefSpec>(toFetch);
foreach (RefSpec requested in toFetch)
{
string reqSrc = requested.Source;
foreach (RefSpec configured in _fetchSpecs)
{
string cfgSrc = configured.Source;
string cfgDst = configured.Destination;
if (cfgSrc.Equals(reqSrc) && cfgDst != null)
{
tmp.Add(configured);
break;
}
}
}
toFetch = tmp;
}
var result = new FetchResult();
new FetchProcess(this, toFetch).execute(monitor, result);
return result;
}
/// <summary>
/// Fetch objects and refs from the remote repository to the local one.
/// <para/>
/// This is a utility function providing standard fetch behavior. Local
/// tracking refs associated with the remote repository are automatically
/// updated if this transport was created from a <see cref="RemoteConfig"/> with
/// fetch RefSpecs defined.
/// </summary>
/// <param name="monitor">
/// progress monitor to inform the user about our processing
/// activity. Must not be null. Use <see cref="NullProgressMonitor"/> if
/// progress updates are not interesting or necessary.
/// </param>
/// <param name="toFetch">
/// specification of refs to fetch locally. May be null or the
/// empty collection to use the specifications from the
/// RemoteConfig. Source for each RefSpec can't be null.
/// </param>
/// <returns>information describing the tracking refs updated.</returns>
public FetchResult fetch(ProgressMonitor monitor, List<RefSpec> toFetch)
{
if (toFetch == null || toFetch.isEmpty())
{
// If the caller did not ask for anything use the defaults.
//
if (_fetch.isEmpty())
{
throw new TransportException("Nothing to fetch.");
}
toFetch = _fetch;
}
else if (!_fetch.isEmpty())
{
// If the caller asked for something specific without giving
// us the local tracking branch see if we can update any of
// the local tracking branches without incurring additional
// object transfer overheads.
//
var tmp = new List<RefSpec>(toFetch);
foreach (RefSpec requested in toFetch)
{
string reqSrc = requested.Source;
foreach (RefSpec configured in _fetch)
{
string cfgSrc = configured.Source;
string cfgDst = configured.Destination;
if (cfgSrc.Equals(reqSrc) && cfgDst != null)
{
tmp.Add(configured);
break;
}
}
}
toFetch = tmp;
}
var result = new FetchResult();
new FetchProcess(this, toFetch).execute(monitor, result);
return result;
}
