private static string CreateCachedRepo(string source, string commitId, IDictionary <string, string> environments)
{
string cachedPath = null;
if (source.IndexOf("github.com", StringComparison.OrdinalIgnoreCase) != -1)
{
// If we're allowed to cache the repository, check if it already exists. If not clone it.
string repoName = Path.GetFileNameWithoutExtension(source.Split('/').Last());
cachedPath = Path.Combine(PathHelper.RepositoryCachePath, repoName);
// Check for the actually .git folder, in case some bogus parent exists but is not an actual repo
bool alreadyExists = Directory.Exists(Path.Combine(cachedPath, ".git")) && IsGitRepo(cachedPath);
Executable gitExe = GetGitExe(cachedPath, environments);
if (alreadyExists)
{
TestTracer.Trace("Using cached copy at location {0}", cachedPath);
// Get it into a clean state on the correct commit id
try
{
// If we don't have a specific commit id to go to, use origin/master
if (commitId == null)
{
commitId = "origin/master";
}
GitExecute(gitExe, "reset --hard " + commitId);
}
catch (Exception e)
{
// Some repos like Drupal don't use a master branch (e.g. default branch is 7.x). In those cases,
// simply reset to the HEAD. That won't undo any test commits, but at least it does some cleanup.
if (e.Message.Contains("ambiguous argument 'origin/master'"))
{
GitExecute(gitExe, "reset --hard HEAD");
}
else if (e.Message.Contains("unknown revision"))
{
// If that commit id doesn't exist, try fetching and doing the reset again
// The reason we don't initially fetch is to avoid the network hit when not necessary
GitExecute(gitExe, "fetch origin");
GitExecute(gitExe, "reset --hard " + commitId);
}
else
{
throw;
}
}
GitExecute(gitExe, "clean -dxf");
}
else
{
// Delete any leftover, ignoring errors
FileSystemHelpers.DeleteDirectorySafe(cachedPath);
TestTracer.Trace("Could not find a cached copy at {0}. Cloning from source {1}.", cachedPath, source);
PathHelper.EnsureDirectory(cachedPath);
GitExecute(gitExe, "clone \"{0}\" .", source);
// If we have a commit id, reset to it in case it's older than the latest on our clone
if (commitId != null)
{
GitExecute(gitExe, "reset --hard " + commitId);
}
}
}
return(cachedPath);
}