Move Publish channel to cmdable. Remove method that was deprecated in…

… v3.

commands.go

@@ -1618,6 +1618,13 @@ func (c *cmdable) DebugObject(key string) *StringCmd {
 
 //------------------------------------------------------------------------------
 
+// Publish posts the message to the channel.
+func (c *cmdable) Publish(channel, message string) *IntCmd {
+	cmd := NewIntCmd("PUBLISH", channel, message)
+	c.process(cmd)
+	return cmd
+}
+
 func (c *cmdable) PubSubChannels(pattern string) *StringSliceCmd {
 	args := []interface{}{"pubsub", "channels"}
 	if pattern != "*" {

pool_test.go

@@ -81,8 +81,8 @@ var _ = Describe("pool", func() {
 		connPool.(*pool.ConnPool).DialLimiter = nil
 
 		perform(1000, func(id int) {
-			pubsub := client.PubSub()
-			Expect(pubsub.Subscribe()).NotTo(HaveOccurred())
+			pubsub, err := client.Subscribe()
+			Expect(err).NotTo(HaveOccurred())
 			Expect(pubsub.Close()).NotTo(HaveOccurred())
 		})
 

pubsub.go

@@ -10,13 +10,6 @@ import (
 	"gopkg.in/redis.v4/internal/pool"
 )
 
-// Posts a message to the given channel.
-func (c *Client) Publish(channel, message string) *IntCmd {
-	req := NewIntCmd("PUBLISH", channel, message)
-	c.Process(req)
-	return req
-}
-
 // PubSub implements Pub/Sub commands as described in
 // http://redis.io/topics/pubsub. It's NOT safe for concurrent use by
 // multiple goroutines.
@@ -29,28 +22,6 @@ type PubSub struct {
 	nsub int // number of active subscriptions
 }
 
-// Deprecated. Use Subscribe/PSubscribe instead.
-func (c *Client) PubSub() *PubSub {
-	return &PubSub{
-		base: baseClient{
-			opt:      c.opt,
-			connPool: pool.NewStickyConnPool(c.connPool.(*pool.ConnPool), false),
-		},
-	}
-}
-
-// Subscribes the client to the specified channels.
-func (c *Client) Subscribe(channels ...string) (*PubSub, error) {
-	pubsub := c.PubSub()
-	return pubsub, pubsub.Subscribe(channels...)
-}
-
-// Subscribes the client to the given patterns.
-func (c *Client) PSubscribe(channels ...string) (*PubSub, error) {
-	pubsub := c.PubSub()
-	return pubsub, pubsub.PSubscribe(channels...)
-}
-
 func (c *PubSub) subscribe(redisCmd string, channels ...string) error {
 	cn, err := c.base.conn()
 	if err != nil {

redis.go

@@ -215,3 +215,24 @@ func (c *Client) pipelineExec(cmds []Cmder) error {
 	}
 	return retErr
 }
+
+func (c *Client) pubSub() *PubSub {
+	return &PubSub{
+		base: baseClient{
+			opt:      c.opt,
+			connPool: pool.NewStickyConnPool(c.connPool.(*pool.ConnPool), false),
+		},
+	}
+}
+
+// Subscribe subscribes the client to the specified channels.
+func (c *Client) Subscribe(channels ...string) (*PubSub, error) {
+	pubsub := c.pubSub()
+	return pubsub, pubsub.Subscribe(channels...)
+}
+
+// PSubscribe subscribes the client to the given patterns.
+func (c *Client) PSubscribe(channels ...string) (*PubSub, error) {
+	pubsub := c.pubSub()
+	return pubsub, pubsub.PSubscribe(channels...)
+}

redis_test.go

@@ -57,10 +57,10 @@ var _ = Describe("Client", func() {
 	})
 
 	It("should close pubsub without closing the client", func() {
-		pubsub := client.PubSub()
+		pubsub, err := client.Subscribe()
 		Expect(pubsub.Close()).NotTo(HaveOccurred())
 
-		_, err := pubsub.Receive()
+		_, err = pubsub.Receive()
 		Expect(err).To(MatchError("redis: client is closed"))
 		Expect(client.Ping().Err()).NotTo(HaveOccurred())
 	})
@@ -90,8 +90,12 @@ var _ = Describe("Client", func() {
 	})
 
 	It("should close pubsub when client is closed", func() {
-		pubsub := client.PubSub()
+		pubsub, err := client.Subscribe()
 		Expect(client.Close()).NotTo(HaveOccurred())
+
+		_, err = pubsub.Receive()
+		Expect(err).To(HaveOccurred())
+
 		Expect(pubsub.Close()).NotTo(HaveOccurred())
 	})