Initial QSfera import

Server/services/nats/pkg/server/nats/nats.go

@@ -0,0 +1,51 @@
+package nats
+
+import (
+	"time"
+
+	nserver "github.com/nats-io/nats-server/v2/server"
+)
+
+var NATSListenAndServeLoopTimer = 1 * time.Second
+
+type NATSServer struct {
+	server *nserver.Server
+}
+
+// NatsOption configures the new NATSServer instance
+func NewNATSServer(logger nserver.Logger, opts ...NatsOption) (*NATSServer, error) {
+	natsOpts := &nserver.Options{}
+
+	for _, o := range opts {
+		o(natsOpts)
+	}
+
+	// enable JetStream
+	natsOpts.JetStream = true
+	// The NATS server itself runs the signal handling. We set `natsOpts.NoSigs = true` because we want to handle signals ourselves
+	natsOpts.NoSigs = true
+
+	server, err := nserver.NewServer(natsOpts)
+	if err != nil {
+		return nil, err
+	}
+
+	server.SetLoggerV2(logger, true, true, false)
+
+	return &NATSServer{
+		server: server,
+	}, nil
+}
+
+// ListenAndServe runs the NATSServer in a blocking way until the server is shutdown or an error occurs
+func (n *NATSServer) ListenAndServe() (err error) {
+	n.server.Start()           // it won't block
+	n.server.WaitForShutdown() // block until the server is fully shutdown
+	return nil
+}
+
+// Shutdown stops the NATSServer gracefully
+func (n *NATSServer) Shutdown() {
+	n.server.Shutdown()
+	n.server.WaitForShutdown()
+}