From 798bfeb0a7129af9a02e4710d06d8e97fd74ce48 Mon Sep 17 00:00:00 2001
From: Matthias Radestock <matthias.radestock@gmail.com>
Date: Tue, 14 Apr 2015 11:28:36 +0100
Subject: [PATCH] make the Router include the RouterConfig rather than copying
 the bulk of it

---
 router/local_peer.go |  5 +++--
 router/router.go     | 22 ++++------------------
 weaver/main.go       | 18 +++++++++---------
 3 files changed, 16 insertions(+), 29 deletions(-)

diff --git a/router/local_peer.go b/router/local_peer.go
index dc479409..651d055b 100644
--- a/router/local_peer.go
+++ b/router/local_peer.go
@@ -245,8 +245,9 @@ func (peer *LocalPeer) broadcastPeerUpdate(peers ...*Peer) {
 }
 
 func (peer *LocalPeer) checkConnectionLimit() error {
-	if 0 != peer.router.ConnLimit && peer.ConnectionCount() >= peer.router.ConnLimit {
-		return fmt.Errorf("Connection limit reached (%v)", peer.router.ConnLimit)
+	limit := peer.router.ConnLimit
+	if 0 != limit && peer.ConnectionCount() >= limit {
+		return fmt.Errorf("Connection limit reached (%v)", limit)
 	}
 	return nil
 }
diff --git a/router/router.go b/router/router.go
index 0197b008..21fbd750 100644
--- a/router/router.go
+++ b/router/router.go
@@ -22,8 +22,6 @@ type LogFrameFunc func(string, []byte, *layers.Ethernet)
 type RouterConfig struct {
 	Port      int
 	Iface     *net.Interface
-	Name      PeerName
-	NickName  string
 	Password  []byte
 	ConnLimit int
 	BufSz     int
@@ -31,8 +29,7 @@ type RouterConfig struct {
 }
 
 type Router struct {
-	Port            int
-	Iface           *net.Interface
+	RouterConfig
 	Ourself         *LocalPeer
 	Macs            *MacCache
 	Peers           *Peers
@@ -41,10 +38,6 @@ type Router struct {
 	GossipChannels  map[uint32]*GossipChannel
 	TopologyGossip  Gossip
 	UDPListener     *net.UDPConn
-	Password        []byte
-	ConnLimit       int
-	BufSz           int
-	LogFrame        LogFrameFunc
 }
 
 type PacketSource interface {
@@ -60,15 +53,8 @@ type PacketSourceSink interface {
 	PacketSink
 }
 
-func NewRouter(config RouterConfig) *Router {
-	router := &Router{
-		Port:           config.Port,
-		Iface:          config.Iface,
-		GossipChannels: make(map[uint32]*GossipChannel),
-		Password:       config.Password,
-		ConnLimit:      config.ConnLimit,
-		BufSz:          config.BufSz,
-		LogFrame:       config.LogFrame}
+func NewRouter(config RouterConfig, name PeerName, nickName string) *Router {
+	router := &Router{RouterConfig: config, GossipChannels: make(map[uint32]*GossipChannel)}
 	onMacExpiry := func(mac net.HardwareAddr, peer *Peer) {
 		log.Println("Expired MAC", mac, "at", peer.FullName())
 	}
@@ -76,7 +62,7 @@ func NewRouter(config RouterConfig) *Router {
 		router.Macs.Delete(peer)
 		log.Println("Removed unreachable peer", peer.FullName())
 	}
-	router.Ourself = NewLocalPeer(config.Name, config.NickName, router)
+	router.Ourself = NewLocalPeer(name, nickName, router)
 	router.Macs = NewMacCache(macMaxAge, onMacExpiry)
 	router.Peers = NewPeers(router.Ourself.Peer, onPeerGC)
 	router.Peers.FetchWithDefault(router.Ourself.Peer)
diff --git a/weaver/main.go b/weaver/main.go
index e9eab0b1..614d1db7 100644
--- a/weaver/main.go
+++ b/weaver/main.go
@@ -39,6 +39,7 @@ func main() {
 		justVersion bool
 		ifaceName   string
 		routerName  string
+		nickName    string
 		password    string
 		wait        int
 		debug       bool
@@ -52,7 +53,7 @@ func main() {
 	flag.IntVar(&config.Port, "port", weave.Port, "router port")
 	flag.StringVar(&ifaceName, "iface", "", "name of interface to capture/inject from (disabled if blank)")
 	flag.StringVar(&routerName, "name", "", "name of router (defaults to MAC of interface)")
-	flag.StringVar(&config.NickName, "nickname", "", "nickname of peer (defaults to hostname)")
+	flag.StringVar(&nickName, "nickname", "", "nickname of peer (defaults to hostname)")
 	flag.StringVar(&password, "password", "", "network password")
 	flag.IntVar(&wait, "wait", 0, "number of seconds to wait for interface to be created and come up (0 = don't wait)")
 	flag.BoolVar(&debug, "debug", false, "enable debug logging")
@@ -86,19 +87,18 @@ func main() {
 		}
 		routerName = config.Iface.HardwareAddr.String()
 	}
+	name, err := weave.PeerNameFromUserInput(routerName)
+	if err != nil {
+		log.Fatal(err)
+	}
 
-	if config.NickName == "" {
-		config.NickName, err = os.Hostname()
+	if nickName == "" {
+		nickName, err = os.Hostname()
 		if err != nil {
 			log.Fatal(err)
 		}
 	}
 
-	config.Name, err = weave.PeerNameFromUserInput(routerName)
-	if err != nil {
-		log.Fatal(err)
-	}
-
 	if password == "" {
 		password = os.Getenv("WEAVE_PASSWORD")
 	}
@@ -119,7 +119,7 @@ func main() {
 	config.BufSz = bufSzMB * 1024 * 1024
 	config.LogFrame = logFrameFunc(debug)
 
-	router := weave.NewRouter(config)
+	router := weave.NewRouter(config, name, nickName)
 	log.Println("Our name is", router.Ourself.FullName())
 	router.Start()
 	initiateConnections(router, peers)