add context to server.SubscriberOptions and broker.SubscribeOption

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

broker/options.go

@@ -111,3 +111,10 @@ func TLSConfig(t *tls.Config) Option {
 		o.TLSConfig = t
 	}
 }
+
+// SubscribeContext set context
+func SubscribeContext(ctx context.Context) SubscribeOption {
+	return func(o *SubscribeOptions) {
+		o.Context = ctx
+	}
+}

server/handler.go

@@ -1,13 +1,20 @@
 package server
 
+import "context"
+
+type HandlerOption func(*HandlerOptions)
+
 type HandlerOptions struct {
 	Internal bool
 	Metadata map[string]map[string]string
 }
 
+type SubscriberOption func(*SubscriberOptions)
+
 type SubscriberOptions struct {
 	Queue    string
 	Internal bool
+	Context  context.Context
 }
 
 // EndpointMetadata is a Handler option that allows metadata to be added to
@@ -34,6 +41,17 @@ func InternalSubscriber(b bool) SubscriberOption {
 		o.Internal = b
 	}
 }
+func NewSubscriberOptions(opts ...SubscriberOption) SubscriberOptions {
+	opt := SubscriberOptions{
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&opt)
+	}
+
+	return opt
+}
 
 // Shared queue name distributed messages across subscribers
 func SubscriberQueue(n string) SubscriberOption {
@@ -41,3 +59,10 @@ func SubscriberQueue(n string) SubscriberOption {
 		o.Queue = n
 	}
 }
+
+// SubscriberContext set context options to allow broker SubscriberOption passed
+func SubscriberContext(ctx context.Context) SubscriberOption {
+	return func(o *SubscriberOptions) {
+		o.Context = ctx
+	}
+}

server/rpc_server.go

@@ -10,7 +10,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/micro/go-log"
+	log "github.com/micro/go-log"
 	"github.com/micro/go-micro/broker"
 	"github.com/micro/go-micro/codec"
 	"github.com/micro/go-micro/metadata"
@@ -357,6 +357,9 @@ func (s *rpcServer) Register() error {
 		if queue := sb.Options().Queue; len(queue) > 0 {
 			opts = append(opts, broker.Queue(queue))
 		}
+		if cx := sb.Options().Context; cx != nil {
+			opts = append(opts, broker.SubscribeContext(cx))
+		}
 		sub, err := config.Broker.Subscribe(sb.Topic(), handler, opts...)
 		if err != nil {
 			return err

server/server.go

@@ -114,10 +114,6 @@ type Subscriber interface {
 
 type Option func(*Options)
 
-type HandlerOption func(*HandlerOptions)
-
-type SubscriberOption func(*SubscriberOptions)
-
 var (
 	DefaultAddress        = ":0"
 	DefaultName           = "go-server"