private async Task EnsureCreatedAsync()
{
var token = await _initializationLock.WaitAsync();
try {
if (!token.IsSet)
{
// Delay-create log since permission is established when settings are loaded
// which may happen after ctor is called.
_logs = new IActionLogWriter[Enum.GetValues(typeof(LogVerbosity)).Length];
_logs[(int)LogVerbosity.None] = NullLogWriter.Instance;
IActionLogWriter mainWriter = NullLogWriter.Instance;
if (_permissions.CurrentVerbosity >= LogVerbosity.Minimal)
{
mainWriter = _writer ?? FileLogWriter.InTempFolder(_appName);
}
// Unfortunately, creation of event sources in OS logs requires local admin rights.
// http://www.christiano.ch/wordpress/2009/12/02/iis7-web-application-writing-to-event-log-generates-security-exception/
// So we can't use OS event logs as in Dev15 there is no MSI which could elevate..
// _maxLogLevel >= LogLevel.Minimal ? (_writer ?? new ApplicationLogWriter(_appName)) : NullLogWriter.Instance;
_logs[(int)LogVerbosity.Minimal] = mainWriter;
_logs[(int)LogVerbosity.Normal] = _permissions.CurrentVerbosity >= LogVerbosity.Normal ? mainWriter : NullLogWriter.Instance;
if (_permissions.CurrentVerbosity == LogVerbosity.Traffic)
{
_logs[(int)LogVerbosity.Traffic] = _writer ?? FileLogWriter.InTempFolder(_appName + ".traffic");
}
else
{
_logs[(int)LogVerbosity.Traffic] = NullLogWriter.Instance;
}
}
} finally {
token.Set();
}
}
