Clone and WithContext redis#471

redis.go

@@ -1,6 +1,7 @@
 package redis // import "gopkg.in/redis.v5"
 
 import (
+	"context"
 	"fmt"
 	"log"
 	"time"
@@ -23,6 +24,8 @@ type baseClient struct {
 
 	process func(Cmder) error
 	onClose func() error // hook called when client is closed
+
+	ctx context.Context
 }
 
 func (c *baseClient) String() string {
@@ -309,6 +312,29 @@ func NewClient(opt *Options) *Client {
 	return newClient(opt, newConnPool(opt))
 }
 
+func (c *Client) Clone() *Client {
+	c2 := new(Client)
+	*c2 = *c
+	c2.cmdable.process = c2.Process
+	return c2
+}
+
+func (c *Client) Context() context.Context {
+	if c.ctx != nil {
+		return c.ctx
+	}
+	return context.Background()
+}
+
+func (c *Client) WithContext(ctx context.Context) *Client {
+	if ctx == nil {
+		panic("nil context")
+	}
+	c2 := c.Clone()
+	c2.ctx = ctx
+	return c2
+}
+
 // PoolStats returns connection pool stats.
 func (c *Client) PoolStats() *PoolStats {
 	s := c.connPool.Stats()