IEnumerable <CommandExecDescriptor> Patterns(IEnumerable <Type> types)
=> from t in types
where Attribute.IsDefined(t, typeof(CommandPatternAttribute)) &&
t.BaseType.IsGenericType && !t.IsAbstract
let typeArgs = t.BaseType.GetGenericArguments()
where typeArgs.Length >= 2
let specType = typeArgs[1]
select new CommandExecDescriptor
{
PatternType = t,
SpecType = specType,
CommandName = CommandSpecDescriptor.FromSpecType(specType).CommandName
};
public static IReadOnlyList <CommandExecDescriptor> DescribeExecutors(this Assembly a)
{
var q = from t in a.GetTypes()
where Attribute.IsDefined(t, typeof(CommandPatternAttribute)) &&
t.BaseType.IsGenericType && !t.IsAbstract
let typeArgs = t.BaseType.GetGenericArguments()
where typeArgs.Length >= 2
let specType = typeArgs[1]
select new CommandExecDescriptor
{
PatternType = t,
SpecType = specType,
CommandName = CommandSpecDescriptor.FromSpecType(specType).CommandName
};
return(q.ToList());
}
static CommandName GetCommandName <TSpec>()
where TSpec : CommandSpec <TSpec>, new()
=> CommandSpecDescriptor.FromSpecType <TSpec>().CommandName;
static IAppMessage OrchestrationStartError(Type SpecType, Exception e)
=> AppMessage.Error("@CommandName orchestration start error: @ErrorDetail", new
{
CommandName = CommandSpecDescriptor.FromSpecType(SpecType).CommandName,
ErrorDetail = e.ToString()
});
