public async Task <FunctionResult> TryExecuteAsync(TriggeredFunctionData input, CancellationToken cancellationToken)
{
var context = new FunctionInstanceFactoryContext <TTriggerValue>()
{
TriggerValue = (TTriggerValue)input.TriggerValue,
ParentId = input.ParentId,
TriggerDetails = input.TriggerDetails
};
if (input.InvokeHandler != null)
{
context.InvokeHandler = async next =>
{
await input.InvokeHandler(next);
// NOTE: The InvokeHandler code path currently does not support flowing the return
// value back to the trigger.
return(null);
};
}
IFunctionInstance instance = _instanceFactory.Create(context);
IDelayedException exception = await _executor.TryExecuteAsync(instance, cancellationToken);
FunctionResult result = exception != null ?
new FunctionResult(exception.Exception)
: new FunctionResult(true);
return(result);
}
private IFunctionInstance CreateFunctionInstance(CallAndOverrideMessage message)
{
IFunctionDefinition function = _functionLookup.Lookup(message.FunctionId);
if (function == null)
{
return(null);
}
IDictionary <string, object> objectParameters = new Dictionary <string, object>();
if (message.Arguments != null)
{
foreach (KeyValuePair <string, string> item in message.Arguments)
{
objectParameters.Add(item.Key, item.Value);
}
}
var context = new FunctionInstanceFactoryContext
{
Id = message.Id,
ParentId = message.ParentId,
ExecutionReason = message.Reason,
Parameters = objectParameters
};
return(function.InstanceFactory.Create(context));
}
public IFunctionInstance Create(FunctionInstanceFactoryContext context)
{
IBindingSource bindingSource = new BindingSource(_binding, context.Parameters);
return(new FunctionInstance(context.Id, context.ParentId, context.ExecutionReason, bindingSource, _invoker, _descriptor));
}
