Reorganised source. Renamed files. No Code change.

router/route.go

@@ -0,0 +1,97 @@
+package router
+
+import "context"
+
+// AddPolicy defines routing table addition policy
+type AddPolicy int
+
+const (
+	// Override overrides existing routing table route
+	OverrideIfExists AddPolicy = iota
+	// IgnoreIfExists does not add new route
+	IgnoreIfExists
+	// ErrIfExists returns error if the route already exists
+	ErrIfExists
+)
+
+// RouteOption is used to define routing table entry options
+type RouteOption func(*RouteOptions)
+
+// RouteOptions defines micro network routing table route options
+type RouteOptions struct {
+	// DestAddr is destination address
+	DestAddr string
+	// Gateway is the next route hop
+	Gateway Router
+	// Network defines micro network
+	Network string
+	// Metric is route cost metric
+	Metric int
+	// Policy defines route addition policy
+	Policy AddPolicy
+	// Context stores other arbitrary options
+	Context context.Context
+}
+
+// DestAddr sets destination address
+func DestAddr(a string) RouteOption {
+	return func(o *RouteOptions) {
+		o.DestAddr = a
+	}
+}
+
+// Gateway sets the route gateway
+func Gateway(r Router) RouteOption {
+	return func(o *RouteOptions) {
+		o.Gateway = r
+	}
+}
+
+// Network sets micro network
+func Network(n string) RouteOption {
+	return func(o *RouteOptions) {
+		o.Network = n
+	}
+}
+
+// Metric sets route metric
+func Metric(m int) RouteOption {
+	return func(o *RouteOptions) {
+		o.Metric = m
+	}
+}
+
+// RoutePolicy sets add route policy
+func RoutePolicy(p AddPolicy) RouteOption {
+	return func(o *RouteOptions) {
+		o.Policy = p
+	}
+}
+
+// Route is routing table route
+type Route interface {
+	// Options returns route options
+	Options() RouteOptions
+}
+
+type route struct {
+	opts RouteOptions
+}
+
+// NewRoute returns new routing table route
+func NewRoute(opts ...RouteOption) Route {
+	eopts := RouteOptions{}
+
+	for _, o := range opts {
+		o(&eopts)
+	}
+
+	return &route{
+		opts: eopts,
+	}
+}
+
+// Options returns route options
+func (r *route) Options() RouteOptions {
+	return r.opts
+}