Move proxy/router

router/query.go

@@ -0,0 +1,74 @@
+package router
+
+// QueryOption sets routing table query options
+type QueryOption func(*QueryOptions)
+
+// QueryOptions are routing table query options
+type QueryOptions struct {
+	// Service is destination service name
+	Service string
+	// Gateway is route gateway
+	Gateway string
+	// Network is network address
+	Network string
+}
+
+// QueryService sets destination address
+func QueryService(s string) QueryOption {
+	return func(o *QueryOptions) {
+		o.Service = s
+	}
+}
+
+// QueryGateway sets route gateway
+func QueryGateway(g string) QueryOption {
+	return func(o *QueryOptions) {
+		o.Gateway = g
+	}
+}
+
+// QueryNetwork sets route network address
+func QueryNetwork(n string) QueryOption {
+	return func(o *QueryOptions) {
+		o.Network = n
+	}
+}
+
+// Query is routing table query
+type Query interface {
+	// Options returns query options
+	Options() QueryOptions
+}
+
+// query is a basic implementation of Query
+type query struct {
+	opts QueryOptions
+}
+
+// NewQuery creates new query and returns it
+func NewQuery(opts ...QueryOption) Query {
+	// default options
+	qopts := QueryOptions{
+		Service: "*",
+		Gateway: "*",
+		Network: "*",
+	}
+
+	for _, o := range opts {
+		o(&qopts)
+	}
+
+	return &query{
+		opts: qopts,
+	}
+}
+
+// Options returns query options
+func (q *query) Options() QueryOptions {
+	return q.opts
+}
+
+// String prints routing table query in human readable form
+func (q query) String() string {
+	return "query"
+}