ci: new publish method (#1451)

packages/sdk/go/internal/apijson/registry.go

@@ -0,0 +1,41 @@
+package apijson
+
+import (
+	"reflect"
+
+	"github.com/tidwall/gjson"
+)
+
+type UnionVariant struct {
+	TypeFilter         gjson.Type
+	DiscriminatorValue interface{}
+	Type               reflect.Type
+}
+
+var unionRegistry = map[reflect.Type]unionEntry{}
+var unionVariants = map[reflect.Type]interface{}{}
+
+type unionEntry struct {
+	discriminatorKey string
+	variants         []UnionVariant
+}
+
+func RegisterUnion(typ reflect.Type, discriminator string, variants ...UnionVariant) {
+	unionRegistry[typ] = unionEntry{
+		discriminatorKey: discriminator,
+		variants:         variants,
+	}
+	for _, variant := range variants {
+		unionVariants[variant.Type] = typ
+	}
+}
+
+// Useful to wrap a union type to force it to use [apijson.UnmarshalJSON] since you cannot define an
+// UnmarshalJSON function on the interface itself.
+type UnionUnmarshaler[T any] struct {
+	Value T
+}
+
+func (c *UnionUnmarshaler[T]) UnmarshalJSON(buf []byte) error {
+	return UnmarshalRoot(buf, &c.Value)
+}