internal void AddLogItem(AppLogItem appLogItem)
{
if (!_messageQueue.IsAddingCompleted)
{
_messageQueue.Add(appLogItem, _cancellationTokenSource.Token);
}
}
private static void setStateJson <TState>(TState state, AppLogItem appLogItem)
{
try
{
appLogItem.StateJson = JsonSerializer.Serialize(
state,
new JsonSerializerOptions
{
IgnoreNullValues = true,
WriteIndented = true
});
}
catch
{
// don't throw exceptions from logger
}
}
private static void setStateJson <TState>(TState state, AppLogItem appLogItem)
{
try
{
appLogItem.StateJson = JsonConvert.SerializeObject(
state,
Formatting.Indented,
new JsonSerializerSettings
{
DefaultValueHandling = DefaultValueHandling.Include
});
}
catch
{
// don't throw exceptions from logger
}
}
private void saveLogItem(AppLogItem appLogItem)
{
try
{
// We need a separate context for the logger to call its SaveChanges several times,
// without using the current request's context and changing its internal state.
_serviceProvider.RunScopedService <IUnitOfWork>(context =>
{
context.Set <AppLogItem>().Add(appLogItem);
context.SaveChanges();
});
}
catch
{
// don't throw exceptions from logger
}
}
public void Log <TState>(
LogLevel logLevel,
EventId eventId,
TState state,
Exception exception,
Func <TState, Exception, string> formatter)
{
if (!IsEnabled(logLevel))
{
return;
}
if (formatter == null)
{
throw new ArgumentNullException(nameof(formatter));
}
var message = formatter(state, exception);
if (exception != null)
{
message = $"{message}{Environment.NewLine}{exception}";
}
if (string.IsNullOrEmpty(message))
{
return;
}
var httpContextAccessor = _serviceProvider.GetService <IHttpContextAccessor>();
var appLogItem = new AppLogItem
{
Url = httpContextAccessor?.HttpContext != null?httpContextAccessor.HttpContext.Request.Path.ToString() : string.Empty,
EventId = eventId.Id,
LogLevel = logLevel.ToString(),
Logger = _loggerName,
Message = message
};
var props = httpContextAccessor?.GetShadowProperties();
setStateJson(state, appLogItem);
_loggerProvider.AddLogItem(new LoggerItem {
Props = props, AppLogItem = appLogItem
});
}
private void saveLogItem(AppLogItem appLogItem)
{
try
{
// We need a separate context for the logger to call its SaveChanges several times,
// without using the current request's context and changing its internal state.
using (var serviceScope = _scopeFactory.CreateScope())
{
using (var context = serviceScope.ServiceProvider.GetService <ExperienceManagementDbContext>())
{
context.Set <AppLogItem>().Add(appLogItem);
context.SaveChanges();
}
}
}
catch
{
// don't throw exceptions from logger
}
}
