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Improve Nats Client Connection Logic #862

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Improve Nats Client Connection Logic #862

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26 changes: 17 additions & 9 deletions clients/messaging/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -30,22 +30,30 @@ func NewClient(name, natsURL string) *Client {
nc *nats.Conn
err error
)
for i := 0; i < 10; i++ {
nc, err = nats.Connect(natsURL)
if err == nil {
break
}
logger.WithError(err).Error("failed to connect to nats server")
time.Sleep(time.Second * 1) // don't retry too quickly - maybe it's not up yet
}
nc, err = nats.Connect(natsURL,
nats.ReconnectWait(2*time.Second),
nats.MaxReconnects(10),
nats.DisconnectErrHandler(func(nc *nats.Conn, err error) {
fmt.Printf("Got disconnected! Reason: %s\n", err.Error())
}),
nats.ReconnectHandler(func(nc *nats.Conn) {
fmt.Printf("Got reconnected to %v!\n", nc.ConnectedUrl())
}),
nats.ClosedHandler(func(nc *nats.Conn) {
fmt.Printf("Connection closed. Reason: %s", nc.LastError().Error())
}),
)

if err != nil {
logger.Panic(err)
logger.Panic(fmt.Errorf("failed to connect to nats server %w", err))
}

logger.Info("successfully connected")
client := &Client{
logger: logger,
nc: nc,
}

return client
}

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