Add more options to the plugin

Signed-off-by: Miek Gieben <miek@miek.nl>

plugin/traffic/README.md

@@ -39,11 +39,11 @@ The extended syntax (not implemented; everything is hard-coded at the moment):
 ~~~
 traffic {
     server grpc://dsdsd <creds>
-    id ID
+    node ID
  }
 ~~~
 
-* id **ID** is how *traffic* identifies itself to the control plane.
+* node **ID** is how *traffic* identifies itself to the control plane. This defaults to `coredns`.
 
 
 ## Examples

plugin/traffic/setup.go

@@ -51,13 +51,18 @@ func setup(c *caddy.Controller) error {
 	return nil
 }
 
-func parse(c *caddy.Controller) error {
+func parse(c *caddy.Controller) (*Traffic, error) {
 	for c.Next() {
 		args := c.RemainingArgs()
 		if len(args) != 0 {
-			return c.ArgErr()
+			return nil, c.ArgErr()
 
 		}
+		for c.NextBlock() {
+			switch c.Val() {
+			case "id":
+			}
+		}
 	}
-	return nil
+	return nil, nil
 }

plugin/traffic/traffic.go

@@ -14,11 +14,12 @@ import (
 // Traffic is a plugin that load balances according to assignments.
 type Traffic struct {
 	c    *xds.Client
+	id   string
 	Next plugin.Handler
 }
 
 // New returns a pointer to a new and initialized Traffic.
-func New() (*Traffic, error) {
+func New(addr, node string) (*Traffic, error) {
 	c, err := xds.New(":18000", "mycoredns")
 	if err != nil {
 		return nil, err

plugin/traffic/xds/client.go

@@ -54,7 +54,7 @@ type Client struct {
 
 // New returns a new client that's dialed to addr using node as the local identifier.
 func New(addr, node string) (*Client, error) {
-	// todo credentials
+	// todo credentials!
 	opts := []grpc.DialOption{grpc.WithInsecure()}
 	cc, err := grpc.Dial(addr, opts...)
 	if err != nil {