/// <summary>
/// The unique identifier for the service owner. This property will attempt to return
/// a cached value, if possible.
/// </summary>
public async Task <Guid> GetInstanceTypeAsync(
CancellationToken cancellationToken = default(CancellationToken))
{
if (!NeedToConnect(ConnectOptions.None))
{
// We've already made a Connect call and have the authoritative service owner ID.
return(m_serviceOwner);
}
else
{
ServerMapData serverData = LocationServerMapCache.ReadServerData(m_fullyQualifiedUrl);
Guid toReturn = serverData.ServiceOwner;
if (Guid.Empty != toReturn)
{
// We do. Return it.
return(toReturn);
}
// We do not. Make a Connect call and retrieve the service owner ID.
await EnsureConnectedAsync(ConnectOptions.None, cancellationToken).ConfigureAwait(false);
return(m_serviceOwner);
}
}
public VssServerDataProvider(
VssConnection connection,
HttpMessageHandler pipeline,
String fullyQualifiedUrl)
{
m_connection = connection;
m_baseUri = connection.Uri;
m_fullyQualifiedUrl = fullyQualifiedUrl;
m_locationClient = new LocationHttpClient(m_baseUri, pipeline, false);
// Try to get the guid for this server
ServerMapData serverData = LocationServerMapCache.ReadServerData(m_fullyQualifiedUrl);
m_locationDataCacheManager = new LocationCacheManager(serverData.ServerId, serverData.ServiceOwner, m_baseUri);
}
public async Task ConnectAsync(ConnectOptions connectOptions, CancellationToken cancellationToken = default(CancellationToken))
{
// We want to force ourselves to includes services if our location service cache has no access mappings.
// This means that this is our first time connecting.
if (!m_locationDataCacheManager.AccessMappings.Any())
{
connectOptions |= ConnectOptions.IncludeServices;
}
Int32 lastChangeId = m_locationDataCacheManager.GetLastChangeId();
// If we have -1 then that means we have no disk cache yet or it means that we recently hit an exception trying to reload
// the the cache from disk (see Exception catch block in EnsureDiskCacheLoaded).
// Either way, we cannot make a call to the server with -1 and pass None.
// If we do, the resulting payload (which would have ClientCacheFresh=false but include no ServiceDefinitions)
// would leave the in-memory cache in an inconsistent state
if (lastChangeId == -1)
{
connectOptions |= ConnectOptions.IncludeServices;
}
Boolean includeServices = (connectOptions & ConnectOptions.IncludeServices) == ConnectOptions.IncludeServices;
// Perform the connection
ConnectionData connectionData = await GetConnectionDataAsync(connectOptions, lastChangeId, cancellationToken).ConfigureAwait(false);
LocationServiceData locationServiceData = connectionData.LocationServiceData;
// If we were previously connected, make sure we cannot connect as a different user.
if (m_authenticatedIdentity != null)
{
if (!IdentityDescriptorComparer.Instance.Equals(m_authenticatedIdentity.Descriptor, connectionData.AuthenticatedUser.Descriptor))
{
throw new VssAuthenticationException(WebApiResources.CannotAuthenticateAsAnotherUser(m_authenticatedIdentity.DisplayName, connectionData.AuthenticatedUser.DisplayName));
}
}
m_authenticatedIdentity = connectionData.AuthenticatedUser;
m_authorizedIdentity = connectionData.AuthorizedUser;
m_instanceId = connectionData.InstanceId;
if (locationServiceData != null)
{
Guid serviceOwner = connectionData.LocationServiceData.ServiceOwner;
if (Guid.Empty == serviceOwner)
{
serviceOwner = ServiceInstanceTypes.TFSOnPremises;
}
m_serviceOwner = serviceOwner;
}
// Verify with our locationServerMap cache that we are storing the correct guid
// for this server. If we are, this is essentially a no-op.
Boolean wroteMapping = LocationServerMapCache.EnsureServerMappingExists(m_fullyQualifiedUrl, m_instanceId, m_serviceOwner);
if (wroteMapping)
{
if (includeServices &&
(connectionData.LocationServiceData.ServiceDefinitions == null ||
connectionData.LocationServiceData.ServiceDefinitions.Count == 0))
{
// This is the rare, rare case where a new server exists at the same url
// that an old server used to (guids are different) and both servers had the same
// location service last change id. In that case, Connect would not have
// brought down any services. To fix this we need to query the services back
// down with -1 as our last change id
ConnectionData updatedConnectionData = await GetConnectionDataAsync(ConnectOptions.IncludeServices, -1, cancellationToken).ConfigureAwait(false);
locationServiceData = updatedConnectionData.LocationServiceData;
}
m_locationDataCacheManager = new LocationCacheManager(m_instanceId, m_serviceOwner, m_baseUri);
}
// update the location service cache if we tried to retireve location service data
m_locationDataCacheManager.WebApplicationRelativeDirectory = connectionData.WebApplicationRelativeDirectory;
if (locationServiceData != null)
{
m_locationDataCacheManager.LoadServicesData(locationServiceData, includeServices);
}
// Set the connection data that we have retrieved
m_validConnectionData |= connectOptions;
m_connectionMade = true;
}
