v3 refactor (#1868)

* Move to v3

Co-authored-by: Ben Toogood <bentoogood@gmail.com>

broker/nats/context.go

@@ -3,7 +3,7 @@ package nats
 import (
 	"context"
 
-	"github.com/micro/go-micro/v2/broker"
+	"github.com/micro/go-micro/v3/broker"
 )
 
 // setBrokerOption returns a function to setup a context with given value

broker/nats/nats.go

@@ -7,10 +7,10 @@ import (
 	"strings"
 	"sync"
 
-	"github.com/micro/go-micro/v2/broker"
-	"github.com/micro/go-micro/v2/codec/json"
-	"github.com/micro/go-micro/v2/logger"
-	"github.com/micro/go-micro/v2/registry"
+	"github.com/micro/go-micro/v3/broker"
+	"github.com/micro/go-micro/v3/codec/json"
+	"github.com/micro/go-micro/v3/logger"
+	"github.com/micro/go-micro/v3/registry/mdns"
 	nats "github.com/nats-io/nats.go"
 )
 
@@ -310,7 +310,7 @@ func NewBroker(opts ...broker.Option) broker.Broker {
 		// Default codec
 		Codec:    json.Marshaler{},
 		Context:  context.Background(),
-		Registry: registry.DefaultRegistry,
+		Registry: mdns.NewRegistry(),
 	}
 
 	n := &natsBroker{

broker/nats/nats_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/micro/go-micro/v2/broker"
+	"github.com/micro/go-micro/v3/broker"
 	nats "github.com/nats-io/nats.go"
 )
 

broker/nats/options.go

@@ -1,7 +1,7 @@
 package nats
 
 import (
-	"github.com/micro/go-micro/v2/broker"
+	"github.com/micro/go-micro/v3/broker"
 	nats "github.com/nats-io/nats.go"
 )