private static bool IsStaleRole(List<RoleRow> l, out RoleRow role)
{
role = null;
if (l == null || l.Count == 0)
{
return false;
}
string rolename = l.ElementAt(0).RoleName;
foreach (RoleRow row in l)
{
Debug.Assert(row.RoleName == rolename, "rolenames do not match");
if (string.IsNullOrEmpty(row.UserName))
{
role = row;
return false;
}
}
return true;
}
// Because of limited transactional support in the table storage offering, this function gives limited guarantees
// for inserting all users into all roles.
// We do not recommend using this function because of missing transactional support.
public override void AddUsersToRoles(string[] usernames, string[] roleNames)
{
SecUtility.CheckArrayParameter(ref roleNames, true, true, true, MaxTableRoleNameLength, "roleNames");
SecUtility.CheckArrayParameter(ref usernames, true, true, true, Constants.MaxTableUsernameLength, "usernames");
RoleRow row;
try
{
TableServiceContext svc = this.CreateDataServiceContext();
foreach (string role in roleNames)
{
if (!this.RoleExists(role))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist!", role));
}
foreach (string user in usernames)
{
row = new RoleRow(this.applicationName, role, user);
try
{
svc.AddObject(this.tableName, row);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
if (e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.Conflict)
{
// this element already exists or was created in a failed retry
// this is not a fatal error; continue adding elements
Log.Write(EventKind.Warning, string.Format(CultureInfo.InstalledUICulture, "The user {0} already exists in the role {1}.", user, role));
svc.Detach(row);
}
else
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "Error adding user {0} to role {1}", user, role));
}
}
}
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override void CreateRole(string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableServiceContext svc = this.CreateDataServiceContext();
RoleRow newRole = new RoleRow(this.applicationName, roleName, string.Empty);
svc.AddObject(this.tableName, newRole);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
// when retry policies are used we cannot distinguish between a conflict and success
// so, in the case of a conflict, we just retrun success here
if (e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.Conflict)
{
// the role already exists
return;
}
throw new ProviderException("Error accessing role table.", e);
}
}