public TfProjectCollection(string uri, ITfsConnectionFactory connectionFactory, ILogger logger)
{
_uri = uri;
_connectionFactory = connectionFactory;
_logger = logger;
_projects = new ConcurrentDictionary <Guid, ITfProject>();
ProjectRetrievalStatus = RetrievalStatus.Unstarted;
}
public async Task RetrieveProjects()
{
if (ProjectRetrievalStatus == RetrievalStatus.Suceeded)
{
return;
}
ProjectRetrievalStatus = RetrievalStatus.Ongoing;
_logger.Info($"{nameof(TfProjectCollection)}: triggering one-time retrieval of projects from {_uri}...");
var exceptions = new List <Exception>();
try
{
var connection = _connectionFactory.Create(_uri);
var currentProjectReferences = await connection.GetProjects();
foreach (var projectReference in currentProjectReferences)
{
_projects[projectReference.Id] = projectReference;
}
ProjectRetrievalStatus = RetrievalStatus.Suceeded;
_logger.Info($"{nameof(TfProjectCollection)}: projects successfully retrieved; project count is {Projects.Count()}.");
}
catch (AggregateException ae)
{
exceptions.AddRange(ae.Flatten().InnerExceptions);
ProjectRetrievalStatus = RetrievalStatus.FailedReasonUnknown;
}
catch (Exception e)
{
exceptions.Add(e);
ProjectRetrievalStatus = RetrievalStatus.FailedReasonUnknown;
}
if (exceptions.Any(ExceptionClassifiers.IsConnectivityException))
{
ProjectRetrievalStatus = RetrievalStatus.FailedDueToConnection;
_logger.Info($"{nameof(TfProjectCollection)}: retrieving projects failed because the server cannot be contacted.");
}
else if (exceptions.Any(ExceptionClassifiers.IsAuthorisationException))
{
ProjectRetrievalStatus = RetrievalStatus.FailedDueToAuth;
_logger.Info($"{nameof(TfProjectCollection)}: retrieving projects failed because of an authentication or authorisation error.");
}
else if (exceptions.Any())
{
_logger.Error($"{nameof(TfProjectCollection)}: retrieving projects failed due to one or more unrecognised exceptions. The first:", exceptions[0]);
}
OnProjectRetrievalCompleted(this, EventArgs.Empty);
}