public TwitterTriggerBinding(ParameterInfo parameter, ILogger logger)
{
_parameter = parameter;
_logger = logger;
_attribute = parameter.GetCustomAttribute <TwitterTriggerAttribute>(inherit: false);
_bindingContract = CreateBindingContract();
}
public Task <ITriggerBinding> TryCreateAsync(TriggerBindingProviderContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
//Retrieve Parameter
ParameterInfo parameter = context.Parameter;
TwitterTriggerAttribute attribute = parameter.GetCustomAttribute <TwitterTriggerAttribute>(inherit: false);
if (attribute == null)
{
return(Task.FromResult <ITriggerBinding>(null));
}
//Validate Trigger
if (!IsSupportedBindingType(parameter.ParameterType))
{
throw new InvalidOperationException($"Can't bind TwitterTriggerAttribute to type '{parameter.ParameterType}'");
}
return(Task.FromResult <ITriggerBinding>(new TwitterTriggerBinding(parameter, _logger)));
}
public TwitterListener(ITriggeredFunctionExecutor executor, TwitterTriggerAttribute attribute)
{
Executor = executor ?? throw new ArgumentNullException(nameof(executor));
_attribute = attribute ?? throw new ArgumentNullException(nameof(attribute));
}