From c9980fd3671d873a7197a5ac4d6ac9d6b046abb6 Mon Sep 17 00:00:00 2001 From: Matthew Holt Date: Wed, 21 Aug 2019 10:46:35 -0600 Subject: Refactor Caddyfile adapter and module registration Use piles from which to draw config values. Module values can return their name, so now we can do two-way mapping from value to name and name to value; whereas before we could only map name to value. This was problematic with the Caddyfile adapter since it receives values and needs to know the name to put in the config. --- context.go | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'context.go') diff --git a/context.go b/context.go index 17488e4..2fd84d5 100644 --- a/context.go +++ b/context.go @@ -99,11 +99,16 @@ func (ctx Context) LoadModule(name string, rawMsg json.RawMessage) (interface{}, return nil, fmt.Errorf("module '%s' has no constructor", mod.Name) } - val := mod.New() + val := mod.New().(interface{}) - // value must be a pointer for unmarshaling into concrete type + // value must be a pointer for unmarshaling into concrete type, even if + // the module's concrete type is a slice or map; New() *should* return + // a pointer, otherwise unmarshaling errors or panics will occur if rv := reflect.ValueOf(val); rv.Kind() != reflect.Ptr { - val = reflect.New(rv.Type()).Elem().Addr().Interface() + log.Printf("[WARNING] ModuleInfo.New() for module '%s' did not return a pointer,"+ + " so we are using reflection to make a pointer instead; please fix this by"+ + " using new(Type) or &Type notation in your module's New() function.", name) + val = reflect.New(rv.Type()).Elem().Addr().Interface().(Module) } // fill in its config only if there is a config to fill in -- cgit v1.2.3