parsed mapblock listener

mapblockaccessor/mapblockaccessor.go

@@ -12,6 +12,11 @@ import (
 type MapBlockAccessor struct {
 	accessor db.DBAccessor
 	c        *cache.Cache
+	listeners []MapBlockListener
+}
+
+type MapBlockListener interface {
+	OnParsedMapBlock(block *mapblockparser.MapBlock)
 }
 
 func getKey(pos coords.MapBlockCoords) string {
@@ -24,6 +29,10 @@ func NewMapBlockAccessor(accessor db.DBAccessor) *MapBlockAccessor {
 	return &MapBlockAccessor{accessor: accessor, c: c}
 }
 
+func (a *MapBlockAccessor) AddListener(l MapBlockListener) {
+	a.listeners = append(a.listeners, l)
+}
+
 func (a *MapBlockAccessor) Update(pos coords.MapBlockCoords, mb *mapblockparser.MapBlock) {
 	key := getKey(pos)
 	a.c.Set(key, mb, cache.DefaultExpiration)
@@ -46,6 +55,10 @@ func (a *MapBlockAccessor) FindLatestMapBlocks(mintime int64, limit int) ([]*map
 			return nil, err
 		}
 
+		for _, listener := range(a.listeners) {
+			listener.OnParsedMapBlock(mapblock)
+		}
+
 		a.c.Set(key, mapblock, cache.DefaultExpiration)
 		mblist = append(mblist, mapblock)
 	}
@@ -75,6 +88,10 @@ func (a *MapBlockAccessor) GetMapBlock(pos coords.MapBlockCoords) (*mapblockpars
 		return nil, err
 	}
 
+	for _, listener := range(a.listeners) {
+		listener.OnParsedMapBlock(mapblock)
+	}
+
 	a.c.Set(key, mapblock, cache.DefaultExpiration)
 
 	return mapblock, nil