private async Task LoadValueWithRetryAsync()
{
_updateIsInProgress.Value = true;
var exceptions = new List <Exception>();
try
{
for (var i = 0; i <= _maxRetries; i++)
{
try
{
_value = await _factory(_value).ConfigureAwait(false);
}
catch (Exception e)
{
exceptions.Add(e);
FactoryError?.BeginRaiseEvent(this, e);
continue;
}
ValueCreated?.BeginRaiseEvent(this, _value);
return;
}
MaxRetriesExceeded?.BeginRaiseEvent(this, exceptions);
}
finally
{
_updateIsInProgress.Value = false;
}
}
/// <summary>Gets an existing or creates a new cached value.</summary>
/// <param name="valueFactory">The method that creates the value when it is null.</param>
/// <returns>The value.</returns>
public virtual T GetValue(Func <T> valueFactoryMethod)
{
if (Value == null)
{
lock (this)
{
if (Value != null)
{
return(Value);
}
Value = valueFactoryMethod();
if (ValueCreated != null)
{
ValueCreated.Invoke(this, new ValueEventArgs <T> {
Value = Value
});
}
}
}
return(Value);
}
protected virtual void OnValueCreated()
{
ValueCreated?.Invoke(this);
}
