yanic/database/socket/database.go

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()
}