add respond injector bridge to paint links

.test-coverage

@@ -9,7 +9,7 @@ FAIL=0
 for dir in $(find . -maxdepth 10 -not -path './.git*' -not -path '*/_*' -type d);
 do
   if ls $dir/*.go &> /dev/null; then
-    go test -v -covermode=count -coverprofile=profile.tmp $dir || FAIL=$?
+    go test -p 1 -v -covermode=count -coverprofile=profile.tmp $dir || FAIL=$?
     if [ -f profile.tmp ]
     then
       tail -n +2 < profile.tmp >> profile.cov

cmd/respondd-bridge/main.go

@@ -0,0 +1,216 @@
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"compress/flate"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net"
+	"os"
+	"time"
+
+	"github.com/FreifunkBremen/yanic/data"
+	"github.com/FreifunkBremen/yanic/respond"
+)
+
+const maxDataGramSize = 8192
+
+// Collector for a specificle respond messages
+type Collector struct {
+	connection *net.UDPConn           // UDP socket
+	queue      chan *respond.Response // received responses
+	interval   time.Duration          // Interval for multicast packets
+	stop       chan interface{}
+	nodes      map[string]*data.ResponseData
+	interMac   map[string]string
+	addrFrom   net.UDPAddr
+	addrTo     net.UDPAddr
+}
+
+func main() {
+	iface := os.Args[1]
+	addrFrom := os.Args[2]
+	addrTo := os.Args[3]
+	linkLocalAddr, err := getLinkLocalAddr(iface)
+	if err != nil {
+		log.Panic(err)
+	}
+	conn, err := net.ListenUDP("udp", &net.UDPAddr{
+		IP:   linkLocalAddr,
+		Zone: iface,
+	})
+	if err != nil {
+		log.Panic(err)
+	}
+	conn.SetReadBuffer(maxDataGramSize)
+	collector := &Collector{
+		connection: conn,
+		queue:      make(chan *respond.Response, 400),
+		stop:       make(chan interface{}),
+		addrFrom:   net.UDPAddr{IP: net.ParseIP(addrFrom)},
+		addrTo:     net.UDPAddr{IP: net.ParseIP(addrTo)},
+		interval:   time.Second * 10,
+		nodes:      make(map[string]*data.ResponseData),
+		interMac:   make(map[string]string),
+	}
+	go collector.receiver(conn)
+	go collector.parser()
+	collector.sendOnce()
+	collector.sender()
+	collector.Close()
+}
+
+// Returns the first link local unicast address for the given interface name
+func getLinkLocalAddr(ifname string) (net.IP, error) {
+	iface, err := net.InterfaceByName(ifname)
+	if err != nil {
+		return nil, err
+	}
+
+	addresses, err := iface.Addrs()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, addr := range addresses {
+		if ipnet := addr.(*net.IPNet); ipnet.IP.IsLinkLocalUnicast() {
+			return ipnet.IP, nil
+		}
+	}
+	return nil, fmt.Errorf("unable to find link local unicast address for %s", ifname)
+}
+
+// SendPacket sends a UDP request to the given unicast or multicast address
+func (coll *Collector) SendRequestPacket(addr net.UDPAddr) {
+	addr.Port = 1001
+	if _, err := coll.connection.WriteToUDP([]byte("GET nodeinfo statistics neighbours"), &addr); err != nil {
+		log.Println("WriteToUDP failed:", err)
+	}
+}
+
+func (coll *Collector) saveResponse(addr net.UDPAddr, node *data.ResponseData) {
+	if val := node.NodeInfo; val == nil {
+		log.Printf("no nodeinfo from %s", addr.String())
+		return
+	}
+	// save current node
+	coll.nodes[addr.IP.String()] = node
+
+	// Process the data and update IP address
+	var otherIP string
+	if addr.IP.Equal(coll.addrFrom.IP) {
+		otherIP = coll.addrTo.IP.String()
+	} else {
+		otherIP = coll.addrFrom.IP.String()
+	}
+
+	otherNode := coll.nodes[otherIP]
+	if otherIP == "" || otherNode == nil {
+		log.Print("othernode not found")
+		return
+	}
+
+	if node.Neighbours == nil {
+		node.Neighbours = &data.Neighbours{
+			Batadv: make(map[string]data.BatadvNeighbours),
+			NodeID: node.NodeInfo.NodeID,
+		}
+	}
+	interMac := node.NodeInfo.Network.Mesh["bat0"].Interfaces.Other[0]
+	if newMac, ok := coll.interMac[addr.IP.String()]; ok {
+		interMac = newMac
+	} else {
+		coll.interMac[addr.IP.String()] = interMac
+	}
+	if _, ok := node.Neighbours.Batadv[interMac]; !ok {
+		node.Neighbours.Batadv[interMac] = data.BatadvNeighbours{
+			Neighbours: make(map[string]data.BatmanLink),
+		}
+	}
+	interOtherMac := otherNode.NodeInfo.Network.Mesh["bat0"].Interfaces.Other[0]
+	if newMac, ok := coll.interMac[coll.addrTo.IP.String()]; ok {
+		interOtherMac = newMac
+	} else {
+		coll.interMac[otherIP] = interMac
+	}
+	node.Neighbours.Batadv[interMac].Neighbours[interOtherMac] = data.BatmanLink{
+		Tq:       253,
+		Lastseen: 0.2,
+	}
+	buf := bytes.Buffer{}
+	writer := bufio.NewWriter(&buf)
+	deflater, err := flate.NewWriter(writer, flate.DefaultCompression)
+
+	err = json.NewEncoder(deflater).Encode(node)
+	if err != nil {
+		panic(err)
+	}
+	deflater.Close()
+	writer.Flush()
+
+	coll.connection.WriteToUDP(buf.Bytes(), &net.UDPAddr{
+		IP:   net.ParseIP("fe80::de:faff:fe9f:2414"),
+		Port: 12345,
+	})
+	log.Print("send response from: ", addr.IP.String())
+}
+
+func (coll *Collector) receiver(conn *net.UDPConn) {
+	buf := make([]byte, maxDataGramSize)
+	for {
+		n, src, err := conn.ReadFromUDP(buf)
+
+		if err != nil {
+			log.Println("ReadFromUDP failed:", err)
+			return
+		}
+
+		raw := make([]byte, n)
+		copy(raw, buf)
+
+		coll.queue <- &respond.Response{
+			Address: *src,
+			Raw:     raw,
+		}
+	}
+}
+
+func (coll *Collector) parser() {
+	for obj := range coll.queue {
+		if data, err := obj.Parse(); err != nil {
+			log.Println("unable to decode response from", obj.Address.String(), err, "\n", string(obj.Raw))
+		} else {
+			coll.saveResponse(obj.Address, data)
+		}
+	}
+}
+
+func (coll *Collector) sendOnce() {
+	coll.SendRequestPacket(coll.addrFrom)
+	coll.SendRequestPacket(coll.addrTo)
+	log.Print("send request")
+}
+
+// send packets continously
+func (coll *Collector) sender() {
+	ticker := time.NewTicker(coll.interval)
+	for {
+		select {
+		case <-coll.stop:
+			ticker.Stop()
+			return
+		case <-ticker.C:
+			// send the multicast packet to request per-node statistics
+			coll.sendOnce()
+		}
+	}
+}
+
+// Close Collector
+func (coll *Collector) Close() {
+	close(coll.stop)
+	coll.connection.Close()
+	close(coll.queue)
+}

cmd/yanic-query/main.go

@@ -19,8 +19,11 @@ func main() {
 
 	nodes := runtime.NewNodes(&runtime.Config{})
 
-	collector := respond.NewCollector(nil, nodes, iface, 0)
+	collector := respond.NewCollector(nil, nodes, iface, iface, iface, 0)
-	collector.SendPacket(net.ParseIP(dstAddress))
+	collector.SendPacket(net.UDPAddr{
+		IP:   net.ParseIP(dstAddress),
+		Zone: iface,
+	})
 
 	time.Sleep(time.Second)
 

cmd/yanic/main.go

@@ -9,8 +9,9 @@ import (
 	"time"
 
 	"github.com/FreifunkBremen/yanic/database"
-	"github.com/FreifunkBremen/yanic/database/all"
+	allDB "github.com/FreifunkBremen/yanic/database/all"
-	"github.com/FreifunkBremen/yanic/meshviewer"
+	"github.com/FreifunkBremen/yanic/output"
+	allOutput "github.com/FreifunkBremen/yanic/output/all"
 	"github.com/FreifunkBremen/yanic/respond"
 	"github.com/FreifunkBremen/yanic/rrd"
 	"github.com/FreifunkBremen/yanic/runtime"
@@ -42,8 +43,17 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
+	if config.Respondd.InterfaceSendUnicast == "" {
+		config.Respondd.InterfaceSendUnicast = config.Respondd.InterfaceListen
+	}
+	if config.Respondd.InterfaceSendMulticast == "" {
+		config.Respondd.InterfaceSendMulticast = config.Respondd.InterfaceListen
+	}
+	if config.Respondd.MulticastDestination != "" {
+		respond.MulticastGroup = config.Respondd.MulticastDestination
+	}
 
-	connections, err = all.Connect(config.Database.Connection)
+	connections, err = allDB.Connect(config.Database.Connection)
 	if err != nil {
 		panic(err)
 	}
@@ -57,7 +67,14 @@ func main() {
 
 	nodes = runtime.NewNodes(config)
 	nodes.Start()
-	meshviewer.Start(config, nodes)
+
+	outputs, err := allOutput.Register(nodes, config.Nodes.Output)
+	if err != nil {
+		panic(err)
+	}
+
+	output.Start(outputs, config)
+	defer output.Close()
 
 	if config.Webserver.Enable {
 		log.Println("starting webserver on", config.Webserver.Bind)
@@ -74,7 +91,7 @@ func main() {
 			time.Sleep(delay)
 		}
 
-		collector = respond.NewCollector(connections, nodes, config.Respondd.Interface, config.Respondd.Port)
+		collector = respond.NewCollector(connections, nodes, config.Respondd.InterfaceListen, config.Respondd.InterfaceSendMulticast, config.Respondd.InterfaceSendUnicast, config.Respondd.ListenPort)
 		collector.Start(config.Respondd.CollectInterval.Duration)
 		defer collector.Close()
 	}

config_example.toml

@@ -5,8 +5,13 @@ enable           = true
 synchronize      = "1m"
 # how oftern request per multicast
 collect_interval = "1m"
-# on which interface
+# on which interface to listen
 interface        = "eth0"
+# send unicast request (default: see interface)
+## interface_send_unicast = "eth0"
+# send multicast request (default: see interface)
+# interface_send_multicast = "eth1"
+
 # define a port to listen
 # (no or 0 would choose at port at his own)
 #port = 10001
@@ -37,7 +42,8 @@ offline_after = "10m"
 prune_after = "7d"
 
 
-[meshviewer]
+[[nodes.output.meshviewer]]
+enable   = true
 # structur of nodes.json, which to support
 # version 1 is to support legacy meshviewer (which are in master branch)
 #    i.e. https://github.com/ffnord/meshviewer/tree/master
@@ -50,6 +56,27 @@ nodes_path     = "/var/www/html/meshviewer/data/nodes.json"
 # path where to store graph.json
 graph_path     = "/var/www/html/meshviewer/data/graph.json"
 
+[nodes.output.meshviewer.filter]
+# no_owner = true
+has_location = true
+blacklist = ["vpnid"]
+
+[nodes.output.meshviewer.filter.in_area]
+latitude_min = 34.30
+latitude_max = 71.85
+longitude_min = -24.96
+longitude_max = 39.72
+
+[[nodes.output.template]]
+enable = false
+template_path = "/var/lib/collector/html-template.tmp"
+output_path = "/var/www/html/index.html"
+
+[[nodes.output.nodelist]]
+enable   = true
+path = "/var/www/html/meshviewer/data/nodelist.json"
+
+
 [database]
 # cleaning data of measurement node,
 #   which are older than 7d
@@ -79,7 +106,18 @@ system = "testing"
 enable   = false
 path     = "/var/log/yanic.log"
 
+
 [[database.connection.graphite]]
 enable   = false
 address  = "localhost:2003"
 prefix   = "freifunk"
+
+[[database.connection.socket]]
+enable   = false
+type     = "tcp"
+address  = ":8081"
+
+[[database.connection.socket]]
+enable   = false
+type     = "unix"
+address  = "/var/lib/collector/database.socket"

contrib/example-template.tmpl

@@ -0,0 +1,16 @@
+function ffhbCurrentStats(data) {
+	$("#freifunk").html("
+	<h1><a href="https://bremen.freifunk.net/" style="color: #444;">bremen.freifunk.net</a></h1>
+	<p>
+		Nutzer: <span id="freifunk_clients">0</span><br>
+		<i style="font-style: italic;">(auf  <span id="freifunk_nodes">0</span> Geräte verteilt)</i>
+	</p>
+	<p style="text-align: right;">
+		<a href="https://events.ffhb.de/meshviewer">mehr</a>
+	</p>");
+
+	$("#freifunk_clients").html(data.Clients);
+	$("#freifunk_nodes").html(data.Nodes);
+};
+
+ffhbCurrentStats({{json .GlobalStatistic}});

data/neighbours.go

@@ -4,7 +4,8 @@ package data
 type Neighbours struct {
 	Batadv         map[string]BatadvNeighbours `json:"batadv"`
 	LLDP           map[string]LLDPNeighbours   `json:"lldp"`
-	//WifiNeighbours map[string]WifiNeighbours   `json:"wifi"`
+	Babel          map[string]BabelNeighbours  `json:"babel"`
+	WifiNeighbours map[string]WifiNeighbours   `json:"wifi"`
 	NodeID         string                      `json:"node_id"`
 }
 
@@ -21,6 +22,11 @@ type BatmanLink struct {
 	Tq       int     `json:"tq"`
 }
 
+// BabelLink struct
+type BabelLink struct {
+	Address string `json:"address"`
+}
+
 // LLDPLink struct
 type LLDPLink struct {
 	Name        string `json:"name"`
@@ -32,6 +38,9 @@ type BatadvNeighbours struct {
 	Neighbours map[string]BatmanLink `json:"neighbours"`
 }
 
+// BabelNeighbours struct
+type BabelNeighbours []BabelLink
+
 // WifiNeighbours struct
 type WifiNeighbours struct {
 	Neighbours map[string]WifiLink `json:"neighbours"`

data/nodeinfo.go

@@ -4,7 +4,7 @@ package data
 type NodeInfo struct {
 	NodeID   string    `json:"node_id"`
 	Network  Network   `json:"network"`
-	Owner    *Owner    `json:"-"` // Removed for privacy reasons
+	Owner    *Owner    `json:"owner"`
 	System   System    `json:"system"`
 	Hostname string    `json:"hostname"`
 	Location *Location `json:"location,omitempty"`

database/all/main.go

@@ -4,4 +4,6 @@ import (
 	_ "github.com/FreifunkBremen/yanic/database/graphite"
 	_ "github.com/FreifunkBremen/yanic/database/influxdb"
 	_ "github.com/FreifunkBremen/yanic/database/logging"
+	_ "github.com/FreifunkBremen/yanic/database/socket"
+	_ "github.com/FreifunkBremen/yanic/database/yanic"
 )

database/graphite/node.go

@@ -50,6 +50,13 @@ func (c *Connection) InsertNode(node *runtime.Node) {
 		}
 		addField("neighbours.batadv", batadv)
 
+		// protocol: Babel
+		babel := 0
+		for _, babelNeighbours := range neighbours.Babel {
+			babel += len(babelNeighbours)
+		}
+		addField("neighbours.babel", babel)
+
 		// protocol: LLDP
 		lldp := 0
 		for _, lldpNeighbours := range neighbours.LLDP {

database/influxdb/node.go

@@ -80,6 +80,13 @@ func buildNodeStats(node *runtime.Node) (tags models.Tags, fields models.Fields)
 		}
 		fields["neighbours.batadv"] = batadv
 
+		// protocol: Babel
+		babel := 0
+		for _, babelNeighbours := range neighbours.Babel {
+			babel += len(babelNeighbours)
+		}
+		fields["neighbours.babel"] = babel
+
 		// protocol: LLDP
 		lldp := 0
 		for _, lldpNeighbours := range neighbours.LLDP {

database/socket/client/dial.go

@@ -0,0 +1,86 @@
+package yanic
+
+import (
+	"encoding/json"
+	"log"
+	"net"
+
+	"github.com/FreifunkBremen/yanic/database/socket"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Dialer struct {
+	conn              net.Conn
+	queue             chan socket.Message
+	quit              chan struct{}
+	NodeHandler       func(*runtime.Node)
+	GlobalsHandler    func(*runtime.GlobalStats)
+	PruneNodesHandler func()
+}
+
+func Dial(ctype, addr string) *Dialer {
+	conn, err := net.Dial(ctype, addr)
+	if err != nil {
+		log.Panicf("yanic dial to %s:%s failed", ctype, addr)
+	}
+	dialer := &Dialer{
+		conn:  conn,
+		queue: make(chan socket.Message),
+		quit:  make(chan struct{}),
+	}
+
+	return dialer
+}
+
+func (d *Dialer) Start() {
+	go d.reciever()
+	d.parser()
+}
+func (d *Dialer) Close() {
+	d.conn.Close()
+	close(d.quit)
+}
+
+func (d *Dialer) reciever() {
+	decoder := json.NewDecoder(d.conn)
+	var msg socket.Message
+
+	for {
+		select {
+		case <-d.quit:
+			close(d.queue)
+			return
+		default:
+			decoder.Decode(&msg)
+			d.queue <- msg
+		}
+	}
+}
+
+func (d *Dialer) parser() {
+	for msg := range d.queue {
+		switch msg.Event {
+		case socket.MessageEventInsertNode:
+			if d.NodeHandler != nil {
+				var node runtime.Node
+
+				obj, _ := json.Marshal(msg.Body)
+				json.Unmarshal(obj, &node)
+				d.NodeHandler(&node)
+			}
+		case socket.MessageEventInsertGlobals:
+			if d.GlobalsHandler != nil {
+				var globals runtime.GlobalStats
+
+				obj, _ := json.Marshal(msg.Body)
+				json.Unmarshal(obj, &globals)
+
+				d.GlobalsHandler(&globals)
+			}
+		case socket.MessageEventPruneNodes:
+			if d.PruneNodesHandler != nil {
+				d.PruneNodesHandler()
+			}
+		}
+	}
+}

database/socket/client/dial_test.go

@@ -0,0 +1,69 @@
+package yanic
+
+import (
+	"testing"
+	"time"
+
+	"github.com/FreifunkBremen/yanic/database/socket"
+	"github.com/FreifunkBremen/yanic/runtime"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestConnectError(t *testing.T) {
+	assert := assert.New(t)
+	assert.Panics(func() {
+		Dial("tcp6", "[::]:30303")
+	}, "could connect")
+}
+
+func TestRecieveMessages(t *testing.T) {
+	assert := assert.New(t)
+	server, err := socket.Connect(map[string]interface{}{
+		"enable":  true,
+		"type":    "tcp6",
+		"address": "[::]:1337",
+	})
+	assert.NoError(err)
+
+	d := Dial("tcp6", "[::]:1337")
+	assert.NotNil(d)
+	go d.Start()
+	time.Sleep(5 * time.Millisecond)
+
+	runned := false
+	d.NodeHandler = func(node *runtime.Node) {
+		runned = true
+	}
+	server.InsertNode(nil)
+	time.Sleep(5 * time.Millisecond)
+	assert.True(runned, "node not inserted")
+
+	runned = false
+	d.GlobalsHandler = func(stats *runtime.GlobalStats) {
+		runned = true
+	}
+	server.InsertGlobals(nil, time.Now())
+	time.Sleep(5 * time.Millisecond)
+	assert.True(runned, "global stats not inserted")
+
+	runned = false
+	d.PruneNodesHandler = func() {
+		runned = true
+	}
+	server.PruneNodes(time.Hour * 24 * 7)
+	time.Sleep(5 * time.Millisecond)
+	assert.True(runned, "node not pruned")
+
+	d.Close()
+
+	time.Sleep(5 * time.Millisecond)
+	runned = false
+	d.PruneNodesHandler = func() {
+		runned = true
+	}
+	server.PruneNodes(time.Hour * 24 * 7)
+	time.Sleep(5 * time.Millisecond)
+	assert.False(runned, "message recieve")
+
+	server.Close()
+}

database/socket/database.go

@@ -0,0 +1,68 @@
+package socket
+
+/*
+ * This socket database is to run another service
+ * (without flooding the network with respondd packages)
+ * e.g. https://github.com/FreifunkBremen/freifunkmanager
+ */
+
+import (
+	"log"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/FreifunkBremen/yanic/database"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Connection struct {
+	database.Connection
+	listener  net.Listener
+	clients   map[net.Addr]net.Conn
+	clientMux sync.Mutex
+}
+
+func init() {
+	database.RegisterAdapter("socket", Connect)
+}
+
+func Connect(configuration interface{}) (database.Connection, error) {
+	config := configuration.(map[string]interface{})
+
+	if !config["enable"].(bool) {
+		return nil, nil
+	}
+
+	ln, err := net.Listen(config["type"].(string), config["address"].(string))
+	if err != nil {
+		return nil, err
+	}
+	conn := &Connection{listener: ln, clients: make(map[net.Addr]net.Conn)}
+	go conn.handleSocketConnection(ln)
+
+	log.Println("[socket-database] listen on: ", ln.Addr())
+
+	return conn, nil
+}
+
+func (conn *Connection) InsertNode(node *runtime.Node) {
+	conn.sendJSON(Message{Event: MessageEventInsertNode, Body: node})
+}
+
+func (conn *Connection) InsertGlobals(stats *runtime.GlobalStats, time time.Time) {
+	conn.sendJSON(Message{Event: MessageEventInsertGlobals, Body: stats})
+}
+
+func (conn *Connection) PruneNodes(deleteAfter time.Duration) {
+	conn.sendJSON(Message{Event: MessageEventPruneNodes})
+}
+
+func (conn *Connection) Close() {
+	conn.clientMux.Lock()
+	for _, c := range conn.clients {
+		c.Close()
+	}
+	conn.clientMux.Unlock()
+	conn.listener.Close()
+}

database/socket/database_test.go

@@ -0,0 +1,80 @@
+package socket
+
+import (
+	"encoding/json"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/FreifunkBremen/yanic/runtime"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStartup(t *testing.T) {
+	assert := assert.New(t)
+
+	config := make(map[string]interface{})
+
+	config["enable"] = false
+	conn, err := Connect(config)
+	assert.Nil(conn)
+
+	config["enable"] = true
+	config["type"] = ""
+	config["address"] = ""
+	conn, err = Connect(config)
+	assert.Error(err, "connection should not work")
+	assert.Nil(conn)
+
+	config["type"] = "tcp6"
+	config["address"] = "[::]:1337"
+
+	conn, err = Connect(config)
+	assert.NoError(err, "connection should work")
+	assert.NotNil(conn)
+
+	conn.Close()
+}
+
+func TestClient(t *testing.T) {
+	assert := assert.New(t)
+
+	config := make(map[string]interface{})
+
+	config["enable"] = true
+	config["type"] = "tcp6"
+	config["address"] = "[::]:1337"
+
+	conn, err := Connect(config)
+	assert.NoError(err, "connection should work")
+	assert.NotNil(conn)
+
+	client, err := net.Dial("tcp6", "[::]:1337")
+	assert.NoError(err, "connection should work")
+	assert.NotNil(client)
+	time.Sleep(time.Duration(3) * time.Microsecond)
+
+	decoder := json.NewDecoder(client)
+	var msg Message
+
+	conn.InsertNode(&runtime.Node{})
+	decoder.Decode(&msg)
+	assert.Equal("insert_node", msg.Event)
+
+	conn.InsertGlobals(&runtime.GlobalStats{}, time.Now())
+	decoder.Decode(&msg)
+	assert.Equal("insert_globals", msg.Event)
+
+	conn.PruneNodes(time.Hour * 24 * 7)
+	decoder.Decode(&msg)
+	assert.Equal("prune_nodes", msg.Event)
+	time.Sleep(time.Duration(3) * time.Microsecond)
+
+	// to reach in sendJSON removing of disconnection
+	conn.Close()
+
+	conn.InsertNode(&runtime.Node{})
+	err = decoder.Decode(&msg)
+	assert.Error(err)
+
+}

database/socket/internal.go

@@ -0,0 +1,35 @@
+package socket
+
+import (
+	"encoding/json"
+	"log"
+	"net"
+)
+
+func (conn *Connection) handleSocketConnection(ln net.Listener) {
+	for {
+		c, err := ln.Accept()
+		if err != nil {
+			log.Println("[socket-database] error during connection of a client", err)
+			continue
+		}
+		conn.clientMux.Lock()
+		conn.clients[c.RemoteAddr()] = c
+		conn.clientMux.Unlock()
+	}
+}
+
+func (conn *Connection) sendJSON(msg Message) {
+	conn.clientMux.Lock()
+	for addr, c := range conn.clients {
+		d := json.NewEncoder(c)
+
+		err := d.Encode(&msg)
+		if err != nil {
+			log.Println("[socket-database] client has not recieve event:", err)
+			c.Close()
+			delete(conn.clients, addr)
+		}
+	}
+	conn.clientMux.Unlock()
+}

database/socket/message.go

@@ -0,0 +1,12 @@
+package socket
+
+type Message struct {
+	Event string      `json:"event"`
+	Body  interface{} `json:"body,omitempty"`
+}
+
+const (
+	MessageEventInsertNode    = "insert_node"
+	MessageEventInsertGlobals = "insert_globals"
+	MessageEventPruneNodes    = "prune_nodes"
+)

database/yanic/main.go

@@ -0,0 +1,81 @@
+package yanic
+
+import (
+	"bufio"
+	"bytes"
+	"compress/flate"
+	"encoding/json"
+	"log"
+	"net"
+	"time"
+
+	"github.com/FreifunkBremen/yanic/data"
+	"github.com/FreifunkBremen/yanic/database"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Connection struct {
+	database.Connection
+	config Config
+	conn   *net.UDPConn
+}
+
+type Config map[string]interface{}
+
+func (c Config) Enable() bool {
+	return c["enable"].(bool)
+}
+func (c Config) Address() string {
+	return c["address"].(string)
+}
+
+func init() {
+	database.RegisterAdapter("yanic", Connect)
+}
+
+func Connect(configuration interface{}) (database.Connection, error) {
+	var config Config
+	config = configuration.(map[string]interface{})
+	if !config.Enable() {
+		return nil, nil
+	}
+	udpAddr, err := net.ResolveUDPAddr("udp", config.Address())
+	if err != nil {
+		log.Panicf("Invalid yanic address: %s", err)
+	}
+
+	conn, err := net.DialUDP("udp", nil, udpAddr)
+	if err != nil {
+		log.Panicf("Unable to dial yanic: %s", err)
+	}
+	return &Connection{config: config, conn: conn}, nil
+}
+
+func (conn *Connection) InsertNode(node *runtime.Node) {
+	buf := bytes.Buffer{}
+	writer := bufio.NewWriter(&buf)
+	deflater, err := flate.NewWriter(writer, flate.DefaultCompression)
+
+	err = json.NewEncoder(deflater).Encode(&data.ResponseData{
+		Statistics: node.Statistics,
+		NodeInfo:   node.Nodeinfo,
+	})
+	if err != nil {
+		panic(err)
+	}
+	deflater.Close()
+	writer.Flush()
+
+	conn.conn.Write(buf.Bytes())
+}
+
+func (conn *Connection) InsertGlobals(stats *runtime.GlobalStats, time time.Time) {
+
+}
+
+func (conn *Connection) PruneNodes(deleteAfter time.Duration) {
+}
+
+func (conn *Connection) Close() {
+	conn.conn.Close()
+}

meshviewer/nodes.go

@@ -1,50 +0,0 @@
-package meshviewer
-
-import (
-	"log"
-	"time"
-
-	"github.com/FreifunkBremen/yanic/runtime"
-)
-
-type nodeBuilder func(*runtime.Nodes) interface{}
-
-var nodeFormats = map[int]nodeBuilder{
-	1: BuildNodesV1,
-	2: BuildNodesV2,
-}
-
-// Start all services to manage Nodes
-func Start(config *runtime.Config, nodes *runtime.Nodes) {
-	go worker(config, nodes)
-}
-
-// Periodically saves the cached DB to json file
-func worker(config *runtime.Config, nodes *runtime.Nodes) {
-	c := time.Tick(config.Nodes.SaveInterval.Duration)
-
-	for range c {
-		saveMeshviewer(config, nodes)
-	}
-}
-
-func saveMeshviewer(config *runtime.Config, nodes *runtime.Nodes) {
-	// Locking foo
-	nodes.RLock()
-	defer nodes.RUnlock()
-	if path := config.Meshviewer.NodesPath; path != "" {
-		version := config.Meshviewer.Version
-		builder := nodeFormats[version]
-
-		if builder != nil {
-			runtime.SaveJSON(builder(nodes), path)
-		} else {
-			log.Panicf("invalid nodes version: %d", version)
-		}
-
-	}
-
-	if path := config.Meshviewer.GraphPath; path != "" {
-		runtime.SaveJSON(BuildGraph(nodes), path)
-	}
-}

output/all/internal.go

@@ -0,0 +1,37 @@
+package all
+
+import (
+	"github.com/FreifunkBremen/yanic/output"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Output struct {
+	output.Output
+	nodes *runtime.Nodes
+	list  []output.Output
+}
+
+func Register(nodes *runtime.Nodes, configuration interface{}) (output.Output, error) {
+	var list []output.Output
+	allOutputs := configuration.(map[string][]interface{})
+	for outputType, outputRegister := range output.Adapters {
+		outputConfigs := allOutputs[outputType]
+		for _, config := range outputConfigs {
+			output, err := outputRegister(nodes, config)
+			if err != nil {
+				return nil, err
+			}
+			if output == nil {
+				continue
+			}
+			list = append(list, output)
+		}
+	}
+	return &Output{list: list, nodes: nodes}, nil
+}
+
+func (o *Output) Save() {
+	for _, item := range o.list {
+		item.Save()
+	}
+}

output/all/main.go

@@ -0,0 +1,6 @@
+package all
+
+import (
+	_ "github.com/FreifunkBremen/yanic/output/meshviewer"
+	_ "github.com/FreifunkBremen/yanic/output/template"
+)

output/internal.go

@@ -0,0 +1,37 @@
+package output
+
+import (
+	"time"
+
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+var quit chan struct{}
+
+// Start workers of database
+// WARNING: Do not override this function
+//  you should use New()
+func Start(output Output, config *runtime.Config) {
+	quit = make(chan struct{})
+	go saveWorker(output, config.Nodes.SaveInterval.Duration)
+}
+
+func Close() {
+	if quit != nil {
+		close(quit)
+	}
+}
+
+// save periodically to output
+func saveWorker(output Output, saveInterval time.Duration) {
+	ticker := time.NewTicker(saveInterval)
+	for {
+		select {
+		case <-ticker.C:
+			output.Save()
+		case <-quit:
+			ticker.Stop()
+			return
+		}
+	}
+}

output/meshviewer/filter.go

@@ -0,0 +1,157 @@
+package meshviewer
+
+import (
+	"github.com/FreifunkBremen/yanic/data"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type filter func(node *runtime.Node) *runtime.Node
+
+// Config Filter
+type filterConfig map[string]interface{}
+
+func (f filterConfig) Blacklist() *map[string]interface{} {
+	if v, ok := f["blacklist"]; ok {
+		list := make(map[string]interface{})
+		for _, nodeid := range v.([]interface{}) {
+			list[nodeid.(string)] = true
+		}
+		return &list
+	}
+	return nil
+}
+
+func (f filterConfig) NoOwner() bool {
+	if v, ok := f["no_owner"]; ok {
+		return v.(bool)
+	}
+	return true
+}
+func (f filterConfig) HasLocation() *bool {
+	if v, ok := f["has_location"].(bool); ok {
+		return &v
+	}
+	return nil
+}
+
+type area struct {
+	xA float64
+	xB float64
+	yA float64
+	yB float64
+}
+
+func (f filterConfig) InArea() *area {
+	if areaConfigInt, ok := f["in_area"]; ok {
+		areaConfig := areaConfigInt.(map[string]interface{})
+		a := area{}
+		if v, ok := areaConfig["latitude_min"]; ok {
+			a.xA = v.(float64)
+		}
+		if v, ok := areaConfig["latitude_max"]; ok {
+			a.xB = v.(float64)
+		}
+		if v, ok := areaConfig["longitude_min"]; ok {
+			a.yA = v.(float64)
+		}
+		if v, ok := areaConfig["longitude_max"]; ok {
+			a.yB = v.(float64)
+		}
+		return &a
+	}
+	return nil
+}
+
+// Create Filter
+func createFilter(config filterConfig) filter {
+	return func(n *runtime.Node) *runtime.Node {
+		//maybe cloning of this object is better?
+		node := n
+
+		if config.NoOwner() {
+			node = filterNoOwner(node)
+		}
+		if ok := config.HasLocation(); ok != nil {
+			node = filterHasLocation(node, *ok)
+		}
+		if area := config.InArea(); area != nil {
+			node = filterLocationInArea(node, *area)
+		}
+		if list := config.Blacklist(); list != nil {
+			node = filterBlacklist(node, *list)
+		}
+
+		return node
+	}
+}
+
+func filterBlacklist(node *runtime.Node, list map[string]interface{}) *runtime.Node {
+	if node != nil {
+		if nodeinfo := node.Nodeinfo; nodeinfo != nil {
+			if _, ok := list[nodeinfo.NodeID]; !ok {
+				return node
+			}
+		}
+	}
+	return nil
+}
+
+func filterNoOwner(node *runtime.Node) *runtime.Node {
+	if node == nil {
+		return nil
+	}
+	return &runtime.Node{
+		Address:    node.Address,
+		Firstseen:  node.Firstseen,
+		Lastseen:   node.Lastseen,
+		Online:     node.Online,
+		Statistics: node.Statistics,
+		Nodeinfo: &data.NodeInfo{
+			NodeID:   node.Nodeinfo.NodeID,
+			Network:  node.Nodeinfo.Network,
+			System:   node.Nodeinfo.System,
+			Owner:    nil,
+			Hostname: node.Nodeinfo.Hostname,
+			Location: node.Nodeinfo.Location,
+			Software: node.Nodeinfo.Software,
+			Hardware: node.Nodeinfo.Hardware,
+			VPN:      node.Nodeinfo.VPN,
+			Wireless: node.Nodeinfo.Wireless,
+		},
+		Neighbours: node.Neighbours,
+	}
+}
+
+func filterHasLocation(node *runtime.Node, withLocation bool) *runtime.Node {
+	if node != nil {
+		if nodeinfo := node.Nodeinfo; nodeinfo != nil {
+			if withLocation {
+				if location := nodeinfo.Location; location != nil {
+					return node
+				}
+			} else {
+				if location := nodeinfo.Location; location == nil {
+					return node
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func filterLocationInArea(node *runtime.Node, a area) *runtime.Node {
+	if node != nil {
+		if nodeinfo := node.Nodeinfo; nodeinfo != nil {
+			if location := nodeinfo.Location; location != nil {
+				if location.Latitude >= a.xA && location.Latitude <= a.xB {
+					if location.Longtitude >= a.yA && location.Longtitude <= a.yB {
+						return node
+					}
+				}
+			} else {
+				return node
+			}
+		}
+	}
+	return nil
+}

output/meshviewer/graph.go

@@ -80,6 +80,7 @@ func (builder *graphBuilder) readNodes(nodes map[string]*runtime.Node) {
 					builder.macToID[sourceAddress] = sourceID
 				}
 			}
+
 		}
 
 		// Iterate over local MAC addresses from LLDP
@@ -102,6 +103,25 @@ func (builder *graphBuilder) readNodes(nodes map[string]*runtime.Node) {
 						}
 					}
 				}
+				// Wifi neighbours
+				for _, wifiNeighbours := range neighbours.WifiNeighbours {
+					for targetAddress, link := range wifiNeighbours.Neighbours {
+						if targetID, found := builder.macToID[targetAddress]; found {
+							linkActive := link.Noise + link.Inactive + link.Signal
+							if linkActive > 0 {
+								builder.addLink(targetID, sourceID, link.Signal/linkActive)
+							}
+						}
+					}
+				}
+				// Babel neighbours
+				for _, babelNeighbours := range neighbours.Babel {
+					for _, link := range babelNeighbours {
+						if targetID, found := builder.macToID[link.Address]; found {
+							builder.addLink(targetID, sourceID, 1)
+						}
+					}
+				}
 				// LLDP
 				for _, neighbours := range neighbours.LLDP {
 					for targetAddress := range neighbours {

output/meshviewer/graph_test.go

@@ -58,7 +58,7 @@ func testGetNodeByFile(filename string) *runtime.Node {
 }
 
 func testfile(name string, obj interface{}) {
-	file, err := ioutil.ReadFile("../runtime/testdata/" + name)
+	file, err := ioutil.ReadFile("../../runtime/testdata/" + name)
 	if err != nil {
 		panic(err)
 	}

output/meshviewer/nodes_test.go

@@ -10,13 +10,13 @@ import (
 )
 
 func TestNodesV1(t *testing.T) {
-	nodes := BuildNodesV1(createTestNodes()).(*NodesV1)
+	nodes := BuildNodesV1(func(n *runtime.Node) *runtime.Node { return n }, createTestNodes()).(*NodesV1)
 
 	assert := assert.New(t)
 	assert.Len(nodes.List, 2)
 }
 func TestNodesV2(t *testing.T) {
-	nodes := BuildNodesV2(createTestNodes()).(*NodesV2)
+	nodes := BuildNodesV2(func(n *runtime.Node) *runtime.Node { return n }, createTestNodes()).(*NodesV2)
 
 	assert := assert.New(t)
 	assert.Len(nodes.List, 2)

output/meshviewer/nodes_v1.go

@@ -14,30 +14,29 @@ type NodesV1 struct {
 }
 
 // BuildNodesV1 transforms data to legacy meshviewer
-func BuildNodesV1(nodes *runtime.Nodes) interface{} {
+func BuildNodesV1(toFilter filter, nodes *runtime.Nodes) interface{} {
 	meshviewerNodes := &NodesV1{
 		Version:   1,
 		List:      make(map[string]*Node),
 		Timestamp: jsontime.Now(),
 	}
 
-	for nodeID := range nodes.List {
+	for nodeID, nodeOrigin := range nodes.List {
-		nodeOrigin := nodes.List[nodeID]
+		nodeFiltere := toFilter(nodeOrigin)
-
+		if nodeOrigin.Statistics == nil || nodeFiltere == nil {
-		if nodeOrigin.Statistics == nil {
 			continue
 		}
 
 		node := &Node{
-			Firstseen: nodeOrigin.Firstseen,
+			Firstseen: nodeFiltere.Firstseen,
-			Lastseen:  nodeOrigin.Lastseen,
+			Lastseen:  nodeFiltere.Lastseen,
 			Flags: Flags{
-				Online:  nodeOrigin.Online,
+				Online:  nodeFiltere.Online,
-				Gateway: nodeOrigin.IsGateway(),
+				Gateway: nodeFiltere.IsGateway(),
 			},
-			Nodeinfo: nodeOrigin.Nodeinfo,
+			Nodeinfo: nodeFiltere.Nodeinfo,
 		}
-		node.Statistics = NewStatistics(nodeOrigin.Statistics)
+		node.Statistics = NewStatistics(nodeFiltere.Statistics)
 		meshviewerNodes.List[nodeID] = node
 	}
 	return meshviewerNodes

output/meshviewer/nodes_v2.go

@@ -14,27 +14,27 @@ type NodesV2 struct {
 }
 
 // BuildNodesV2 transforms data to modern meshviewers
-func BuildNodesV2(nodes *runtime.Nodes) interface{} {
+func BuildNodesV2(toFilter filter, nodes *runtime.Nodes) interface{} {
 	meshviewerNodes := &NodesV2{
 		Version:   2,
 		Timestamp: jsontime.Now(),
 	}
 
-	for nodeID := range nodes.List {
+	for _, nodeOrigin := range nodes.List {
-		nodeOrigin := nodes.List[nodeID]
+		nodeFiltere := toFilter(nodeOrigin)
-		if nodeOrigin.Statistics == nil {
+		if nodeOrigin.Statistics == nil || nodeFiltere == nil {
 			continue
 		}
 		node := &Node{
-			Firstseen: nodeOrigin.Firstseen,
+			Firstseen: nodeFiltere.Firstseen,
-			Lastseen:  nodeOrigin.Lastseen,
+			Lastseen:  nodeFiltere.Lastseen,
 			Flags: Flags{
-				Online:  nodeOrigin.Online,
+				Online:  nodeFiltere.Online,
-				Gateway: nodeOrigin.IsGateway(),
+				Gateway: nodeFiltere.IsGateway(),
 			},
-			Nodeinfo: nodeOrigin.Nodeinfo,
+			Nodeinfo: nodeFiltere.Nodeinfo,
 		}
-		node.Statistics = NewStatistics(nodeOrigin.Statistics)
+		node.Statistics = NewStatistics(nodeFiltere.Statistics)
 		meshviewerNodes.List = append(meshviewerNodes.List, node)
 	}
 	return meshviewerNodes

output/meshviewer/output.go

@@ -0,0 +1,88 @@
+package meshviewer
+
+import (
+	"log"
+
+	"github.com/FreifunkBremen/yanic/output"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Output struct {
+	output.Output
+	config  Config
+	nodes   *runtime.Nodes
+	builder nodeBuilder
+	filter  filter
+}
+
+type Config map[string]interface{}
+
+func (c Config) Enable() bool {
+	return c["enable"].(bool)
+}
+
+func (c Config) Version() int64 {
+	return c["version"].(int64)
+}
+func (c Config) NodesPath() string {
+	if c["nodes_path"] == nil {
+		log.Panic("in configuration of [[nodes.output.meshviewer]] was no nodes_path defined", c)
+	}
+	return c["nodes_path"].(string)
+}
+func (c Config) GraphPath() string {
+	return c["graph_path"].(string)
+}
+
+func (c Config) FilterOption() filterConfig {
+	if v, ok := c["filter"]; ok {
+		var filterMap filterConfig
+		filterMap = v.(map[string]interface{})
+		return filterMap
+	}
+	return nil
+}
+
+type nodeBuilder func(filter, *runtime.Nodes) interface{}
+
+var nodeFormats = map[int64]nodeBuilder{
+	1: BuildNodesV1,
+	2: BuildNodesV2,
+}
+
+func init() {
+	output.RegisterAdapter("meshviewer", Register)
+}
+
+func Register(nodes *runtime.Nodes, configuration interface{}) (output.Output, error) {
+	var config Config
+	config = configuration.(map[string]interface{})
+	if !config.Enable() {
+		return nil, nil
+	}
+
+	builder := nodeFormats[config.Version()]
+	if builder == nil {
+		log.Panicf("invalid nodes version: %d", config.Version())
+	}
+
+	return &Output{
+		nodes:   nodes,
+		config:  config,
+		builder: builder,
+		filter:  createFilter(config.FilterOption()),
+	}, nil
+}
+
+func (o *Output) Save() {
+	o.nodes.RLock()
+	defer o.nodes.RUnlock()
+
+	if path := o.config.NodesPath(); path != "" {
+		runtime.SaveJSON(o.builder(o.filter, o.nodes), path)
+	}
+
+	if path := o.config.GraphPath(); path != "" {
+		runtime.SaveJSON(BuildGraph(o.nodes), path)
+	}
+}

output/nodelist/nodelist.go

@@ -0,0 +1,64 @@
+package nodelist
+
+import (
+	"github.com/FreifunkBremen/yanic/jsontime"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+// NodeList rewritten after: https://github.com/ffnord/ffmap-backend/blob/c33ebf62f013e18bf71b5a38bd058847340db6b7/lib/nodelist.py
+type NodeList struct {
+	Version   string        `json:"version"`
+	Timestamp jsontime.Time `json:"updated_at"` // Timestamp of the generation
+	List      []*Node       `json:"nodes"`
+}
+
+type Node struct {
+	ID       string    `json:"id"`
+	Name     string    `json:"name"`
+	Position *Position `json:"position,omitempty"`
+	Status   struct {
+		Online      bool          `json:"online"`
+		LastContact jsontime.Time `json:"lastcontact"`
+		Clients     uint32        `json:"clients"`
+	} `json:"status"`
+}
+
+type Position struct {
+	Lat  float64 `json:"lat"`
+	Long float64 `json:"long"`
+}
+
+func NewNode(n *runtime.Node) *Node {
+	if nodeinfo := n.Nodeinfo; nodeinfo != nil {
+		node := &Node{
+			ID:   nodeinfo.NodeID,
+			Name: nodeinfo.Hostname,
+		}
+		if location := nodeinfo.Location; location != nil {
+			node.Position = &Position{Lat: location.Latitude, Long: location.Longtitude}
+		}
+
+		node.Status.Online = n.Online
+		node.Status.LastContact = n.Lastseen
+		if statistics := n.Statistics; statistics != nil {
+			node.Status.Clients = statistics.Clients.Total
+		}
+		return node
+	}
+	return nil
+}
+
+func transform(nodes *runtime.Nodes) *NodeList {
+	nodelist := &NodeList{
+		Version:   "1.0.1",
+		Timestamp: jsontime.Now(),
+	}
+
+	for _, nodeOrigin := range nodes.List {
+		node := NewNode(nodeOrigin)
+		if node != nil {
+			nodelist.List = append(nodelist.List, node)
+		}
+	}
+	return nodelist
+}

output/nodelist/nodelist_test.go

@@ -0,0 +1,60 @@
+package nodelist
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/FreifunkBremen/yanic/data"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+func TestTransform(t *testing.T) {
+	nodes := transform(createTestNodes())
+
+	assert := assert.New(t)
+	assert.Len(nodes.List, 3)
+}
+
+func createTestNodes() *runtime.Nodes {
+	nodes := runtime.NewNodes(&runtime.Config{})
+
+	nodeData := &data.ResponseData{
+		Statistics: &data.Statistics{
+			Clients: data.Clients{
+				Total: 23,
+			},
+		},
+		NodeInfo: &data.NodeInfo{
+			Hardware: data.Hardware{
+				Model: "TP-Link 841",
+			},
+		},
+	}
+	nodeData.NodeInfo.Software.Firmware.Release = "2016.1.6+entenhausen1"
+	nodes.Update("abcdef012345", nodeData)
+
+	nodes.Update("112233445566", &data.ResponseData{
+		Statistics: &data.Statistics{
+			Clients: data.Clients{
+				Total: 2,
+			},
+		},
+		NodeInfo: &data.NodeInfo{
+			Hardware: data.Hardware{
+				Model: "TP-Link 841",
+			},
+		},
+	})
+
+	nodes.Update("0xdeadbeef0x", &data.ResponseData{
+		NodeInfo: &data.NodeInfo{
+			VPN: true,
+			Hardware: data.Hardware{
+				Model: "Xeon Multi-Core",
+			},
+		},
+	})
+
+	return nodes
+}

output/nodelist/output.go

@@ -0,0 +1,51 @@
+package nodelist
+
+import (
+	goTemplate "text/template"
+
+	"github.com/FreifunkBremen/yanic/output"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Output struct {
+	output.Output
+	config   Config
+	nodes    *runtime.Nodes
+	template *goTemplate.Template
+}
+
+type Config map[string]interface{}
+
+func (c Config) Enable() bool {
+	return c["enable"].(bool)
+}
+
+func (c Config) Path() string {
+	return c["path"].(string)
+}
+
+func init() {
+	output.RegisterAdapter("nodelist", Register)
+}
+
+func Register(nodes *runtime.Nodes, configuration interface{}) (output.Output, error) {
+	var config Config
+	config = configuration.(map[string]interface{})
+	if !config.Enable() {
+		return nil, nil
+	}
+
+	return &Output{
+		config: config,
+		nodes:  nodes,
+	}, nil
+}
+
+func (o *Output) Save() {
+	o.nodes.RLock()
+	defer o.nodes.RUnlock()
+
+	if path := o.config.Path(); path != "" {
+		runtime.SaveJSON(transform(o.nodes), path)
+	}
+}

output/output.go

@@ -0,0 +1,19 @@
+package output
+
+import "github.com/FreifunkBremen/yanic/runtime"
+
+// Output interface to use for implementation in e.g. influxdb
+type Output interface {
+	// InsertNode stores statistics per node
+	Save()
+}
+
+// Register function with config to get a output interface
+type Register func(nodes *runtime.Nodes, config interface{}) (Output, error)
+
+// Adapters is the list of registered output adapters
+var Adapters = map[string]Register{}
+
+func RegisterAdapter(name string, n Register) {
+	Adapters[name] = n
+}

output/template/main.go

@@ -0,0 +1,85 @@
+package template
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"log"
+	"os"
+	goTemplate "text/template"
+
+	"github.com/FreifunkBremen/yanic/output"
+	"github.com/FreifunkBremen/yanic/runtime"
+)
+
+type Output struct {
+	output.Output
+	config   Config
+	nodes    *runtime.Nodes
+	template *goTemplate.Template
+}
+
+type Config map[string]interface{}
+
+func (c Config) Enable() bool {
+	return c["enable"].(bool)
+}
+
+func (c Config) TemplatePath() string {
+	return c["template_path"].(string)
+}
+func (c Config) ResultPath() string {
+	return c["result_path"].(string)
+}
+
+func init() {
+	output.RegisterAdapter("template", Register)
+}
+
+func Register(nodes *runtime.Nodes, configuration interface{}) (output.Output, error) {
+	var config Config
+	config = configuration.(map[string]interface{})
+	if !config.Enable() {
+		return nil, nil
+	}
+	t := goTemplate.New("some")
+	t = t.Funcs(goTemplate.FuncMap{"json": func(v interface{}) string {
+		a, _ := json.Marshal(v)
+		return string(a)
+	}})
+	buf := bytes.NewBuffer(nil)
+	f, err := os.Open(config.TemplatePath()) // Error handling elided for brevity.
+	if err != nil {
+		log.Panic(err)
+	}
+	io.Copy(buf, f) // Error handling elided for brevity.
+	f.Close()
+
+	s := string(buf.Bytes())
+	t.Parse(s)
+	return &Output{
+		config:   config,
+		nodes:    nodes,
+		template: t,
+	}, nil
+}
+
+func (o *Output) Save() {
+	stats := runtime.NewGlobalStats(o.nodes)
+	if stats == nil {
+		log.Panic("update of [output.template] not possible invalid data for the template generated")
+	}
+	tmpFile := o.config.ResultPath() + ".tmp"
+	f, err := os.OpenFile(tmpFile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		log.Panic(err)
+	}
+	o.template.Execute(f, map[string]interface{}{"GlobalStatistic": stats})
+	if err != nil {
+		log.Panic(err)
+	}
+	f.Close()
+	if err := os.Rename(tmpFile, o.config.ResultPath()); err != nil {
+		log.Panic(err)
+	}
+}

respond/collector.go

@@ -19,7 +19,8 @@ import (
 type Collector struct {
 	connection         *net.UDPConn   // UDP socket
 	queue              chan *Response // received responses
-	iface      string
+	ifaceSendUnicast   string
+	ifaceSendMulticast string
 	db                 database.Connection
 	nodes              *runtime.Nodes
 	interval           time.Duration // Interval for multicast packets
@@ -27,17 +28,17 @@ type Collector struct {
 }
 
 // NewCollector creates a Collector struct
-func NewCollector(db database.Connection, nodes *runtime.Nodes, iface string, port int) *Collector {
+func NewCollector(db database.Connection, nodes *runtime.Nodes, ifaceListen string, ifaceSendUnicast string, ifaceSendMulticast string, port int) *Collector {
-	linkLocalAddr, err := getLinkLocalAddr(iface)
+	linkLocalAddr, err := getLinkLocalAddr(ifaceListen)
 	if err != nil {
 		log.Panic(err)
 	}
 
-	// Open socket
+	// Open link local socket
 	conn, err := net.ListenUDP("udp", &net.UDPAddr{
 		IP:   linkLocalAddr,
 		Port: port,
-		Zone: iface,
+		Zone: ifaceListen,
 	})
 	if err != nil {
 		log.Panic(err)
@@ -48,13 +49,15 @@ func NewCollector(db database.Connection, nodes *runtime.Nodes, iface string, po
 		connection:         conn,
 		db:                 db,
 		nodes:              nodes,
-		iface:      iface,
+		ifaceSendUnicast:   ifaceSendUnicast,
+		ifaceSendMulticast: ifaceSendMulticast,
 		queue:              make(chan *Response, 400),
 		stop:               make(chan interface{}),
 	}
 
-	go collector.receiver()
+	go collector.receiver(conn)
 	go collector.parser()
+	collector.listenPublic()
 
 	if collector.db != nil {
 		go collector.globalStatsWorker()
@@ -83,6 +86,18 @@ func getLinkLocalAddr(ifname string) (net.IP, error) {
 	return nil, fmt.Errorf("unable to find link local unicast address for %s", ifname)
 }
 
+func (coll *Collector) listenPublic() {
+	conn, err := net.ListenUDP("udp", &net.UDPAddr{
+		IP:   net.ParseIP("::"),
+		Port: 12345,
+	})
+	if err != nil {
+		log.Panic(err)
+	}
+	conn.SetReadBuffer(maxDataGramSize)
+	go coll.receiver(conn)
+}
+
 // Start Collector
 func (coll *Collector) Start(interval time.Duration) {
 	if coll.interval != 0 {
@@ -117,7 +132,10 @@ func (coll *Collector) sendOnce() {
 
 func (coll *Collector) sendMulticast() {
 	log.Println("sending multicast")
-	coll.SendPacket(net.ParseIP(multiCastGroup))
+	coll.SendPacket(net.UDPAddr{
+		IP:   net.ParseIP(MulticastGroup),
+		Zone: coll.ifaceSendMulticast,
+	})
 }
 
 // Send unicast packets to nodes that did not answer the multicast
@@ -132,19 +150,17 @@ func (coll *Collector) sendUnicasts(seenBefore jsontime.Time) {
 	// Send unicast packets
 	log.Printf("sending unicast to %d nodes", len(nodes))
 	for _, node := range nodes {
-		coll.SendPacket(node.Address)
+		coll.SendPacket(net.UDPAddr{
+			IP:   node.Address,
+			Zone: coll.ifaceSendUnicast,
+		})
 		time.Sleep(10 * time.Millisecond)
 	}
 }
 
 // SendPacket sends a UDP request to the given unicast or multicast address
-func (coll *Collector) SendPacket(address net.IP) {
+func (coll *Collector) SendPacket(addr net.UDPAddr) {
-	addr := net.UDPAddr{
+	addr.Port = port
-		IP:   address,
-		Port: port,
-		Zone: coll.iface,
-	}
-
 	if _, err := coll.connection.WriteToUDP([]byte("GET nodeinfo statistics neighbours"), &addr); err != nil {
 		log.Println("WriteToUDP failed:", err)
 	}
@@ -167,7 +183,8 @@ func (coll *Collector) sender() {
 
 func (coll *Collector) parser() {
 	for obj := range coll.queue {
-		if data, err := obj.parse(); err != nil {
+
+		if data, err := obj.Parse(); err != nil {
 			log.Println("unable to decode response from", obj.Address.String(), err, "\n", string(obj.Raw))
 		} else {
 			coll.saveResponse(obj.Address, data)
@@ -175,7 +192,7 @@ func (coll *Collector) parser() {
 	}
 }
 
-func (res *Response) parse() (*data.ResponseData, error) {
+func (res *Response) Parse() (*data.ResponseData, error) {
 	// Deflate
 	deflater := flate.NewReader(bytes.NewReader(res.Raw))
 	defer deflater.Close()
@@ -215,10 +232,10 @@ func (coll *Collector) saveResponse(addr net.UDPAddr, res *data.ResponseData) {
 	}
 }
 
-func (coll *Collector) receiver() {
+func (coll *Collector) receiver(conn *net.UDPConn) {
 	buf := make([]byte, maxDataGramSize)
 	for {
-		n, src, err := coll.connection.ReadFromUDP(buf)
+		n, src, err := conn.ReadFromUDP(buf)
 
 		if err != nil {
 			log.Println("ReadFromUDP failed:", err)

respond/collector_test.go

@@ -18,7 +18,7 @@ func TestParse(t *testing.T) {
 		Raw: compressed,
 	}
 
-	data, err := res.parse()
+	data, err := res.Parse()
 
 	assert.NoError(err)
 	assert.NotNil(data)

respond/respond.go

@@ -4,9 +4,10 @@ import (
 	"net"
 )
 
+// default multicast group used by announced
+var MulticastGroup string = "ff02:0:0:0:0:0:2:1001"
+
 const (
-	// default multicast group used by announced
-	multiCastGroup = "ff02:0:0:0:0:0:2:1001"
 
 	// default udp port used by announced
 	port = 1001

runtime/config.go

@@ -11,8 +11,11 @@ type Config struct {
 	Respondd struct {
 		Enable                 bool     `toml:"enable"`
 		Synchronize            Duration `toml:"synchronize"`
-		Interface       string   `toml:"interface"`
+		InterfaceListen        string   `toml:"interface"`
-		Port            int      `toml:"port"`
+		InterfaceSendMulticast string   `toml:"interface_send_multicast"`
+		InterfaceSendUnicast   string   `toml:"interface_send_unicast"`
+		ListenPort             int      `toml:"port"`
+		MulticastDestination   string   `toml:"destination"`
 		CollectInterval        Duration `toml:"collect_interval"`
 	}
 	Webserver struct {
@@ -26,6 +29,7 @@ type Config struct {
 		SaveInterval Duration `toml:"save_interval"` // Save nodes periodically
 		OfflineAfter Duration `toml:"offline_after"` // Set node to offline if not seen within this period
 		PruneAfter   Duration `toml:"prune_after"`   // Remove nodes after n days of inactivity
+		Output       map[string][]interface{}
 	}
 	Meshviewer struct {
 		Version   int    `toml:"version"`

runtime/config_test.go

@@ -15,16 +15,20 @@ func TestReadConfig(t *testing.T) {
 	assert.NotNil(config)
 
 	assert.True(config.Respondd.Enable)
-	assert.Equal("eth0", config.Respondd.Interface)
+	assert.Equal("eth0", config.Respondd.InterfaceListen)
 	assert.Equal(time.Minute, config.Respondd.CollectInterval.Duration)
 
-	assert.Equal(2, config.Meshviewer.Version)
-	assert.Equal("/var/www/html/meshviewer/data/nodes.json", config.Meshviewer.NodesPath)
-
 	assert.Equal(time.Hour*24*7, config.Nodes.PruneAfter.Duration)
 
 	assert.Equal(time.Hour*24*7, config.Database.DeleteAfter.Duration)
 
+	var meshviewer map[string]interface{}
+	outputs := config.Nodes.Output["meshviewer"]
+	assert.Len(outputs, 1, "more outputs are given")
+	meshviewer = outputs[0].(map[string]interface{})
+	assert.Equal(int64(2), meshviewer["version"])
+	assert.Equal("/var/www/html/meshviewer/data/nodes.json", meshviewer["nodes_path"])
+
 	var influxdb map[string]interface{}
 	dbs := config.Database.Connection["influxdb"]
 	assert.Len(dbs, 1, "more influxdb are given")

runtime/stats.go

@@ -23,7 +23,7 @@ func NewGlobalStats(nodes *Nodes) (result *GlobalStats) {
 		Models:    make(CounterMap),
 	}
 
-	nodes.Lock()
+	nodes.RLock()
 	for _, node := range nodes.List {
 		if node.Online {
 			result.Nodes++
@@ -42,7 +42,7 @@ func NewGlobalStats(nodes *Nodes) (result *GlobalStats) {
 			}
 		}
 	}
-	nodes.Unlock()
+	nodes.RUnlock()
 	return
 }