private static bool Init()
{
bool go;
lock (log4net_loaded_lock)
{
go = (null == __log && log4net_loaded && !log4net_init_pending && !log4net_has_shutdown);
if (go)
{
log4net_init_pending = true; // block simultaneous execution of the rest of the code in Init()
}
}
if (go)
{
try
{
BasicConfigurator.Configure();
XmlConfigurator.Configure();
ILog l = LogManager.GetLogger(typeof(Logging));
lock (log4net_loaded_lock)
{
__log = l;
}
// as per https://stackoverflow.com/questions/28723920/check-whether-log4net-xmlconfigurator-succeeded
//
// log4net must have picked up the configuration or it will not function anyhow
//if (!LogManager.GetRepository().Configured)
{
// log4net not configured
foreach (var message in LogManager.GetRepository().ConfigurationMessages)
{
// evaluate configuration message
LogLog logInitMsg = message as LogLog;
BufferMessage(String.Format("log4net config: {0}", logInitMsg?.Message ?? message));
}
}
}
catch (Exception ex)
{
BufferException(ex);
}
}
bool rv;
lock (log4net_loaded_lock)
{
if (go)
{
log4net_init_pending = false; // de-block
}
// return value: TRUE when success
rv = (null != __log);
}
// only log/yak about initialization success when it actually did happen just above:
if (rv)
{
Debug("Logging initialised at {0}", LogAssist.AppendStackTrace(null, "get_log"));
Info("Logging initialised.");
// thread safety: move and reset the pending message buffer/list
List <LogBufEntry> lst = new List <LogBufEntry>();
lock (log4net_loaded_lock)
{
if (init_ex_list != null && init_ex_list.Count > 0)
{
// move list
lst = init_ex_list;
init_ex_list = null;
}
}
if (lst.Count > 0)
{
Error("--- Logging early bird log messages: ---");
foreach (LogBufEntry ex in lst)
{
if (ex.ex != null)
{
if (ex.message != null)
{
Error(ex.ex, "{0}", ex.message);
}
else
{
Error(ex.ex, "Logger init failure?");
}
}
else
{
Info("{0}", ex.message);
}
}
lst.Clear();
Error("-- Logging early bird log messages done. ---");
}
}
return(rv);
}
/// <summary>
/// Test whether the log4net-based log system has been loaded and set up and if so, enable the use of that logging system.
///
/// Up to that moment, all Logging APIs will log to a memory buffer/queue which will written to the logging system
/// once it is loaded, set up and active.
/// </summary>
public static void TriggerInit()
{
bool go;
lock (log4net_loaded_lock)
{
go = (null == __log && !log4net_loaded && !log4net_init_pending && !log4net_has_shutdown);
if (go)
{
log4net_init_pending = true; // block simultaneous execution of the rest of the code in TriggerInit()
}
}
if (go)
{
bool we_are_ready_for_the_next_phase = false;
try
{
// test if log4net assembly is loaded and ready:
Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
bool active = false;
foreach (Assembly assembly in assemblies)
{
if (assembly.FullName.StartsWith("log4net"))
{
active = true;
break;
}
}
if (active)
{
// as per https://stackoverflow.com/questions/28723920/check-whether-log4net-xmlconfigurator-succeeded
//
// log4net must have picked up the configuration or it will not function anyhow
if (!LogManager.GetRepository().Configured)
{
// log4net not configured
foreach (var message in LogManager.GetRepository().ConfigurationMessages)
{
// evaluate configuration message
LogLog logInitMsg = message as LogLog;
BufferMessage(String.Format("log config: {0}", logInitMsg?.Message ?? message));
}
}
we_are_ready_for_the_next_phase = true;
}
}
finally
{
// make sure the pending flag is reset whenever we leave this block
lock (log4net_loaded_lock)
{
log4net_loaded = we_are_ready_for_the_next_phase;
log4net_init_pending = false; // de-block
}
}
}
}
public LogReceivedEventArgs(log4net.Util.LogLog loglog)
{
this.loglog = loglog;
}
