[TASK] add yanic database for injection

database/all/main.go

@@ -5,4 +5,5 @@ import (
 	_ "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/yanic/main.go

@@ -0,0 +1,82 @@
+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,
+		Neighbours: node.Neighbours,
+	})
+	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()
+}