DBSize,ScriptLoad,ScriptFlush and ScriptExists should use hook (#1811)

Signed-off-by: monkey <golang@88.com>

Author: monkey92t

cluster_commands.go

@@ -8,55 +8,63 @@ import (
 
 func (c *ClusterClient) DBSize(ctx context.Context) *IntCmd {
 	cmd := NewIntCmd(ctx, "dbsize")
-	var size int64
-	err := c.ForEachMaster(ctx, func(ctx context.Context, master *Client) error {
-		n, err := master.DBSize(ctx).Result()
+	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		var size int64
+		err := c.ForEachMaster(ctx, func(ctx context.Context, master *Client) error {
+			n, err := master.DBSize(ctx).Result()
+			if err != nil {
+				return err
+			}
+			atomic.AddInt64(&size, n)
+			return nil
+		})
 		if err != nil {
-			return err
+			cmd.SetErr(err)
+		} else {
+			cmd.val = size
 		}
-		atomic.AddInt64(&size, n)
 		return nil
 	})
-	if err != nil {
-		cmd.SetErr(err)
-		return cmd
-	}
-	cmd.val = size
 	return cmd
 }
 
 func (c *ClusterClient) ScriptLoad(ctx context.Context, script string) *StringCmd {
 	cmd := NewStringCmd(ctx, "script", "load", script)
-	mu := &sync.Mutex{}
-	err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
-		val, err := shard.ScriptLoad(ctx, script).Result()
+	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		mu := &sync.Mutex{}
+		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
+			val, err := shard.ScriptLoad(ctx, script).Result()
+			if err != nil {
+				return err
+			}
+
+			mu.Lock()
+			if cmd.Val() == "" {
+				cmd.val = val
+			}
+			mu.Unlock()
+
+			return nil
+		})
 		if err != nil {
-			return err
-		}
-
-		mu.Lock()
-		if cmd.Val() == "" {
-			cmd.val = val
+			cmd.SetErr(err)
 		}
-		mu.Unlock()
-
 		return nil
 	})
-	if err != nil {
-		cmd.SetErr(err)
-	}
-
 	return cmd
 }
 
 func (c *ClusterClient) ScriptFlush(ctx context.Context) *StatusCmd {
 	cmd := NewStatusCmd(ctx, "script", "flush")
-	_ = c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
-		shard.ScriptFlush(ctx)
-
+	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
+			return shard.ScriptFlush(ctx).Err()
+		})
+		if err != nil {
+			cmd.SetErr(err)
+		}
 		return nil
 	})
-
 	return cmd
 }
 
@@ -74,26 +82,28 @@ func (c *ClusterClient) ScriptExists(ctx context.Context, hashes ...string) *Boo
 		result[i] = true
 	}
 
-	mu := &sync.Mutex{}
-	err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
-		val, err := shard.ScriptExists(ctx, hashes...).Result()
+	_ = c.hooks.process(ctx, cmd, func(ctx context.Context, _ Cmder) error {
+		mu := &sync.Mutex{}
+		err := c.ForEachShard(ctx, func(ctx context.Context, shard *Client) error {
+			val, err := shard.ScriptExists(ctx, hashes...).Result()
+			if err != nil {
+				return err
+			}
+
+			mu.Lock()
+			for i, v := range val {
+				result[i] = result[i] && v
+			}
+			mu.Unlock()
+
+			return nil
+		})
 		if err != nil {
-			return err
-		}
-
-		mu.Lock()
-		for i, v := range val {
-			result[i] = result[i] && v
+			cmd.SetErr(err)
+		} else {
+			cmd.val = result
 		}
-		mu.Unlock()
-
 		return nil
 	})
-	if err != nil {
-		cmd.SetErr(err)
-	}
-
-	cmd.val = result
-
 	return cmd
 }