add new command Touch and SwapDB

commands.go

@@ -73,6 +73,7 @@ type Cmdable interface {
 	Sort(key string, sort *Sort) *StringSliceCmd
 	SortStore(key, store string, sort *Sort) *IntCmd
 	SortInterfaces(key string, sort *Sort) *SliceCmd
+	Touch(keys ...string) *IntCmd
 	TTL(key string) *DurationCmd
 	Type(key string) *StatusCmd
 	Scan(cursor uint64, match string, count int64) *ScanCmd
@@ -253,6 +254,7 @@ type StatefulCmdable interface {
 	Cmdable
 	Auth(password string) *StatusCmd
 	Select(index int) *StatusCmd
+	SwapDB(index1, index2 int) *StatusCmd
 	ClientSetName(name string) *BoolCmd
 	ReadOnly() *StatusCmd
 	ReadWrite() *StatusCmd
@@ -317,6 +319,12 @@ func (c *statefulCmdable) Select(index int) *StatusCmd {
 	return cmd
 }
 
+func (c *statefulCmdable) SwapDB(index1, index2 int) *StatusCmd {
+	cmd := NewStatusCmd("swapdb", index1, index2)
+	c.process(cmd)
+	return cmd
+}
+
 //------------------------------------------------------------------------------
 
 func (c *cmdable) Del(keys ...string) *IntCmd {
@@ -533,6 +541,17 @@ func (c *cmdable) SortInterfaces(key string, sort *Sort) *SliceCmd {
 	return cmd
 }
 
+func (c *cmdable) Touch(keys ...string) *IntCmd {
+	args := make([]interface{}, len(keys)+1)
+	args[0] = "touch"
+	for i, key := range keys {
+		args[i+1] = key
+	}
+	cmd := NewIntCmd(args...)
+	c.process(cmd)
+	return cmd
+}
+
 func (c *cmdable) TTL(key string) *DurationCmd {
 	cmd := NewDurationCmd(time.Second, "ttl", key)
 	c.process(cmd)

commands_test.go

@@ -79,6 +79,16 @@ var _ = Describe("Commands", func() {
 			Expect(sel.Val()).To(Equal("OK"))
 		})
 
+		It("should SwapDB", func() {
+			pipe := client.Pipeline()
+			sel := pipe.SwapDB(1, 2)
+			_, err := pipe.Exec()
+			Expect(err).NotTo(HaveOccurred())
+
+			Expect(sel.Err()).NotTo(HaveOccurred())
+			Expect(sel.Val()).To(Equal("OK"))
+		})
+
 		It("should BgRewriteAOF", func() {
 			Skip("flaky test")
 
@@ -650,6 +660,20 @@ var _ = Describe("Commands", func() {
 			Expect(els).To(Equal([]string{"1", "2"}))
 		})
 
+		It("should Touch", func() {
+			set1 := client.Set("touch1", "hello", 0)
+			Expect(set1.Err()).NotTo(HaveOccurred())
+			Expect(set1.Val()).To(Equal("OK"))
+
+			set2 := client.Set("touch2", "hello", 0)
+			Expect(set2.Err()).NotTo(HaveOccurred())
+			Expect(set2.Val()).To(Equal("OK"))
+
+			touch := client.Touch("touch1", "touch2", "touch3")
+			Expect(touch.Err()).NotTo(HaveOccurred())
+			Expect(touch.Val()).To(Equal(int64(2)))
+		})
+
 		It("should TTL", func() {
 			ttl := client.TTL("key")
 			Expect(ttl.Err()).NotTo(HaveOccurred())