add option to inject nats.Options

options.go

@@ -0,0 +1,27 @@
+package nats
+
+import (
+	"github.com/micro/go-micro/broker"
+	"github.com/nats-io/nats"
+)
+
+var (
+	DefaultNatsOptions = nats.GetDefaultOptions()
+
+	optionsKey = optionsKeyType{}
+)
+
+type optionsKeyType struct{}
+
+type brokerOptions struct {
+	natsOptions nats.Options
+}
+
+// NatsOptions allow to inject a nats.Options struct for configuring
+// the nats connection
+func NatsOptions(nopts nats.Options) broker.Option {
+	return func(o *broker.Options) {
+		no := o.Context.Value(optionsKey).(*brokerOptions)
+		no.natsOptions = nopts
+	}
+}