Further consolidate the libraries

api/router/options.go

@@ -0,0 +1,61 @@
+package router
+
+import (
+	"github.com/micro/go-micro/api/resolver"
+	"github.com/micro/go-micro/api/resolver/micro"
+	"github.com/micro/go-micro/cmd"
+	"github.com/micro/go-micro/registry"
+)
+
+type Options struct {
+	Namespace string
+	Handler   string
+	Registry  registry.Registry
+	Resolver  resolver.Resolver
+}
+
+type Option func(o *Options)
+
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Handler:  "meta",
+		Registry: *cmd.DefaultOptions().Registry,
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	if options.Resolver == nil {
+		options.Resolver = micro.NewResolver(
+			resolver.WithHandler(options.Handler),
+			resolver.WithNamespace(options.Namespace),
+		)
+	}
+
+	return options
+}
+
+func WithHandler(h string) Option {
+	return func(o *Options) {
+		o.Handler = h
+	}
+}
+
+func WithNamespace(ns string) Option {
+	return func(o *Options) {
+		o.Namespace = ns
+	}
+}
+
+func WithRegistry(r registry.Registry) Option {
+	return func(o *Options) {
+		o.Registry = r
+	}
+}
+
+func WithResolver(r resolver.Resolver) Option {
+	return func(o *Options) {
+		o.Resolver = r
+	}
+}