add options in broker

.gitignore

@@ -1,6 +1,8 @@
 # Develop tools
 /.vscode/
 /.idea/
+.idea
+.vscode
 
 # Binaries for programs and plugins
 *.exe
@@ -13,6 +15,7 @@
 _obj
 _test
 _build
+.DS_Store
 
 # Architecture specific extensions/prefixes
 *.[568vq]

broker/broker.go

@@ -4,6 +4,7 @@ package broker // import "go.unistack.org/micro/v4/broker"
 import (
 	"context"
 	"errors"
+	"time"
 
 	"go.unistack.org/micro/v4/metadata"
 	"go.unistack.org/micro/v4/options"
@@ -19,6 +20,8 @@ var (
 	ErrDisconnected = errors.New("broker disconnected")
 	// ErrInvalidMessage returns when message has nvalid format
 	ErrInvalidMessage = errors.New("broker message has invalid format")
+	// DefaultGracefulTimeout
+	DefaultGracefulTimeout = 5 * time.Second
 )
 
 // Broker is an interface used for asynchronous messaging.

broker/options.go

@@ -3,6 +3,7 @@ package broker
 import (
 	"context"
 	"crypto/tls"
+	"sync"
 	"time"
 
 	"go.unistack.org/micro/v4/codec"
@@ -36,22 +37,27 @@ type Options struct {
 	Name string
 	// Address holds the broker address
 	Address []string
+
+	Wait *sync.WaitGroup
+
+	GracefulTimeout time.Duration
 }
 
 // NewOptions create new Options
 func NewOptions(opts ...options.Option) Options {
-	options := Options{
+	newOpts := Options{
 		Register:        register.DefaultRegister,
 		Logger:          logger.DefaultLogger,
 		Context:         context.Background(),
 		Meter:           meter.DefaultMeter,
 		Codecs:          make(map[string]codec.Codec),
 		Tracer:          tracer.DefaultTracer,
+		GracefulTimeout: DefaultGracefulTimeout,
 	}
 	for _, o := range opts {
-		o(&options)
+		o(&newOpts)
 	}
-	return options
+	return newOpts
 }
 
 // PublishOptions struct