Move to a selector package

selector/options.go

@@ -0,0 +1,34 @@
+package selector
+
+import (
+	"github.com/micro/go-micro/registry"
+)
+
+type Options struct {
+	Registry registry.Registry
+}
+
+type SelectOptions struct {
+	Filters []SelectFilter
+}
+
+// Option used to initialise the selector
+type Option func(*Options)
+
+// SelectOption used when making a select call
+type SelectOption func(*SelectOptions)
+
+// Registry sets the registry used by the selector
+func Registry(r registry.Registry) Option {
+	return func(o *Options) {
+		o.Registry = r
+	}
+}
+
+// Filter adds a filter function to the list of filters
+// used during the Select call.
+func Filter(fn SelectFilter) SelectOption {
+	return func(o *SelectOptions) {
+		o.Filters = append(o.Filters, fn)
+	}
+}