mirror of
https://github.com/gravitl/netmaker.git
synced 2024-09-20 23:36:18 +08:00
103 lines
3.3 KiB
Go
103 lines
3.3 KiB
Go
package mq
|
|
|
|
import (
|
|
"context"
|
|
"time"
|
|
|
|
mqtt "github.com/eclipse/paho.mqtt.golang"
|
|
"github.com/gravitl/netmaker/logger"
|
|
"github.com/gravitl/netmaker/netclient/ncutils"
|
|
"github.com/gravitl/netmaker/servercfg"
|
|
)
|
|
|
|
// KEEPALIVE_TIMEOUT - time in seconds for timeout
|
|
const KEEPALIVE_TIMEOUT = 60 //timeout in seconds
|
|
// MQ_DISCONNECT - disconnects MQ
|
|
const MQ_DISCONNECT = 250
|
|
|
|
// MQ_TIMEOUT - timeout for MQ
|
|
const MQ_TIMEOUT = 30
|
|
|
|
var peer_force_send = 0
|
|
|
|
var mqclient mqtt.Client
|
|
|
|
func setMqOptions(user, password string, opts *mqtt.ClientOptions) {
|
|
broker, _ := servercfg.GetMessageQueueEndpoint()
|
|
opts.AddBroker(broker)
|
|
id := ncutils.MakeRandomString(23)
|
|
opts.ClientID = id
|
|
opts.SetUsername(user)
|
|
opts.SetPassword(password)
|
|
opts.SetAutoReconnect(true)
|
|
opts.SetConnectRetry(true)
|
|
opts.SetConnectRetryInterval(time.Second << 2)
|
|
opts.SetKeepAlive(time.Minute)
|
|
opts.SetWriteTimeout(time.Minute)
|
|
}
|
|
|
|
// SetupMQTT creates a connection to broker and return client
|
|
func SetupMQTT() {
|
|
opts := mqtt.NewClientOptions()
|
|
setMqOptions(servercfg.GetMqUserName(), servercfg.GetMqPassword(), opts)
|
|
opts.SetOnConnectHandler(func(client mqtt.Client) {
|
|
if token := client.Subscribe("ping/#", 2, mqtt.MessageHandler(Ping)); token.WaitTimeout(MQ_TIMEOUT*time.Second) && token.Error() != nil {
|
|
client.Disconnect(240)
|
|
logger.Log(0, "ping subscription failed")
|
|
}
|
|
if token := client.Subscribe("update/#", 0, mqtt.MessageHandler(UpdateNode)); token.WaitTimeout(MQ_TIMEOUT*time.Second) && token.Error() != nil {
|
|
client.Disconnect(240)
|
|
logger.Log(0, "node update subscription failed")
|
|
}
|
|
if token := client.Subscribe("host/serverupdate/#", 0, mqtt.MessageHandler(UpdateHost)); token.WaitTimeout(MQ_TIMEOUT*time.Second) && token.Error() != nil {
|
|
client.Disconnect(240)
|
|
logger.Log(0, "host update subscription failed")
|
|
}
|
|
if token := client.Subscribe("signal/#", 0, mqtt.MessageHandler(ClientPeerUpdate)); token.WaitTimeout(MQ_TIMEOUT*time.Second) && token.Error() != nil {
|
|
client.Disconnect(240)
|
|
logger.Log(0, "node client subscription failed")
|
|
}
|
|
if token := client.Subscribe("metrics/#", 0, mqtt.MessageHandler(UpdateMetrics)); token.WaitTimeout(MQ_TIMEOUT*time.Second) && token.Error() != nil {
|
|
client.Disconnect(240)
|
|
logger.Log(0, "node metrics subscription failed")
|
|
}
|
|
|
|
opts.SetOrderMatters(true)
|
|
opts.SetResumeSubs(true)
|
|
})
|
|
mqclient = mqtt.NewClient(opts)
|
|
tperiod := time.Now().Add(10 * time.Second)
|
|
for {
|
|
if token := mqclient.Connect(); !token.WaitTimeout(MQ_TIMEOUT*time.Second) || token.Error() != nil {
|
|
logger.Log(2, "unable to connect to broker, retrying ...")
|
|
if time.Now().After(tperiod) {
|
|
if token.Error() == nil {
|
|
logger.FatalLog("could not connect to broker, token timeout, exiting ...")
|
|
} else {
|
|
logger.FatalLog("could not connect to broker, exiting ...", token.Error().Error())
|
|
}
|
|
}
|
|
} else {
|
|
break
|
|
}
|
|
time.Sleep(2 * time.Second)
|
|
}
|
|
}
|
|
|
|
// Keepalive -- periodically pings all nodes to let them know server is still alive and doing well
|
|
func Keepalive(ctx context.Context) {
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
return
|
|
case <-time.After(time.Second * KEEPALIVE_TIMEOUT):
|
|
sendPeers()
|
|
}
|
|
}
|
|
}
|
|
|
|
// IsConnected - function for determining if the mqclient is connected or not
|
|
func IsConnected() bool {
|
|
return mqclient != nil && mqclient.IsConnected()
|
|
}
|