public void Log <TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func <TState, Exception, string> formatter)
{
// propagate special exceptions through the EventManager
string source = _categoryName ?? Utility.GetValueFromState(state, ScriptConstants.LogPropertySourceKey);
if (exception is FunctionIndexingException && _eventManager != null)
{
_eventManager.Publish(new FunctionIndexingEvent("FunctionIndexingException", source, exception));
}
// User logs are not logged to system logs.
if (!IsEnabled(logLevel) || IsUserLog(state))
{
return;
}
string formattedMessage = formatter?.Invoke(state, exception);
// If we don't have a message, there's nothing to log.
if (string.IsNullOrEmpty(formattedMessage))
{
return;
}
IDictionary <string, object> scopeProps = DictionaryLoggerScope.GetMergedStateDictionary() ?? new Dictionary <string, object>();
// Apply standard event properties
// Note: we must be sure to default any null values to empty string
// otherwise the ETW event will fail to be persisted (silently)
string subscriptionId = _environment.GetSubscriptionId() ?? string.Empty;
string appName = _environment.GetAzureWebsiteUniqueSlotName() ?? string.Empty;
string summary = Sanitizer.Sanitize(formattedMessage) ?? string.Empty;
string innerExceptionType = string.Empty;
string innerExceptionMessage = string.Empty;
string functionName = _functionName;
string eventName = !string.IsNullOrEmpty(eventId.Name) ? eventId.Name : Utility.GetValueFromState(state, ScriptConstants.LogPropertyEventNameKey);
string functionInvocationId = Utility.GetValueFromScope(scopeProps, ScriptConstants.LogPropertyFunctionInvocationIdKey) ?? string.Empty;
string hostInstanceId = _hostInstanceId;
string activityId = Utility.GetValueFromState(state, ScriptConstants.LogPropertyActivityIdKey);
string runtimeSiteName = _environment.GetRuntimeSiteName() ?? string.Empty;
// Populate details from the exception.
string details = string.Empty;
if (exception != null)
{
if (string.IsNullOrEmpty(functionName) && exception is FunctionInvocationException fex)
{
functionName = string.IsNullOrEmpty(fex.MethodName) ? string.Empty : fex.MethodName.Replace("Host.Functions.", string.Empty);
}
(innerExceptionType, innerExceptionMessage, details) = exception.GetExceptionDetails();
innerExceptionMessage = innerExceptionMessage ?? string.Empty;
}
_eventGenerator.LogFunctionTraceEvent(logLevel, subscriptionId, appName, functionName, eventName, source, details, summary, innerExceptionType, innerExceptionMessage, functionInvocationId, hostInstanceId, activityId, runtimeSiteName);
}
public static IDisposable Push(object state)
{
IDictionary <string, object> stateValues;
if (state is IEnumerable <KeyValuePair <string, object> > stateEnum)
{
// Convert this to a dictionary as we have scenarios where we cannot have duplicates. In this
// case, if there are dupes, the later entry wins.
stateValues = new Dictionary <string, object>();
foreach (var entry in stateEnum)
{
stateValues[entry.Key] = entry.Value;
}
}
else
{
// There's nothing we can do with other states.
return(null);
}
Current = new DictionaryLoggerScope(new ReadOnlyDictionary <string, object>(stateValues), Current);
return(new DisposableScope());
}
public IDisposable BeginScope<TState>(TState state) => DictionaryLoggerScope.Push(state);
public void Log <TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func <TState, Exception, string> formatter)
{
// User logs are not logged to system logs.
if (!IsEnabled(logLevel) || IsUserLog(state))
{
return;
}
string formattedMessage = formatter?.Invoke(state, exception);
// If we don't have a message, there's nothing to log.
if (string.IsNullOrEmpty(formattedMessage))
{
return;
}
IDictionary <string, object> scopeProps = DictionaryLoggerScope.GetMergedStateDictionary() ?? new Dictionary <string, object>();
// Apply standard event properties
// Note: we must be sure to default any null values to empty string
// otherwise the ETW event will fail to be persisted (silently)
string subscriptionId = _subscriptionId ?? string.Empty;
string appName = _appName ?? string.Empty;
string source = _categoryName ?? Utility.GetValueFromState(state, ScriptConstants.LogPropertySourceKey);
string summary = Sanitizer.Sanitize(formattedMessage) ?? string.Empty;
string innerExceptionType = string.Empty;
string innerExceptionMessage = string.Empty;
string functionName = _functionName;
string eventName = Utility.GetValueFromState(state, ScriptConstants.LogPropertyEventNameKey);
string functionInvocationId = Utility.GetValueFromScope(scopeProps, ScriptConstants.LogPropertyFunctionInvocationIdKey) ?? string.Empty;
string hostInstanceId = _hostInstanceId;
string activityId = Utility.GetValueFromState(state, ScriptConstants.LogPropertyActivityIdKey);
// Populate details from the exception.
string details = string.Empty;
if (exception != null)
{
details = Sanitizer.Sanitize(exception.ToFormattedString());
if (string.IsNullOrEmpty(functionName) && exception is FunctionInvocationException fex)
{
functionName = string.IsNullOrEmpty(fex.MethodName) ? string.Empty : fex.MethodName.Replace("Host.Functions.", string.Empty);
}
Exception innerException = exception.InnerException;
while (innerException != null && innerException.InnerException != null)
{
innerException = innerException.InnerException;
}
if (innerException != null)
{
GetExceptionDetails(innerException, out innerExceptionType, out innerExceptionMessage);
}
else
{
GetExceptionDetails(exception, out innerExceptionType, out innerExceptionMessage);
}
}
_eventGenerator.LogFunctionTraceEvent(logLevel, subscriptionId, appName, functionName, eventName, source, details, summary, innerExceptionType, innerExceptionMessage, functionInvocationId, hostInstanceId, activityId);
}
private DictionaryLoggerScope(IReadOnlyDictionary <string, object> state, DictionaryLoggerScope parent)
{
State = state;
Parent = parent;
}
