feat(redis): add redis command for getex (#5323)

core/stores/redis/redis.go

@@ -664,6 +664,28 @@ func (s *Redis) GetDelCtx(ctx context.Context, key string) (string, error) {
 	return val, err
 }
 
+// GetEx is the implementation of redis getex command.
+// Available since: redis version 6.2.0
+func (s *Redis) GetEx(key string, seconds int) (string, error) {
+	return s.GetExCtx(context.Background(), key, seconds)
+}
+
+// GetExCtx is the implementation of redis getex command.
+// Available since: redis version 6.2.0
+func (s *Redis) GetExCtx(ctx context.Context, key string, seconds int) (string, error) {
+	conn, err := getRedis(s)
+	if err != nil {
+		return "", err
+	}
+
+	val, err := conn.GetEx(ctx, key, time.Duration(seconds)*time.Second).Result()
+	if errors.Is(err, red.Nil) {
+		return "", nil
+	}
+
+	return val, err
+}
+
 // GetSet is the implementation of redis getset command.
 func (s *Redis) GetSet(key, value string) (string, error) {
 	return s.GetSetCtx(context.Background(), key, value)

core/stores/redis/redis_test.go

@@ -1104,6 +1104,45 @@ func TestRedis_GetDel(t *testing.T) {
 	})
 }
 
+func TestRedis_GetEx(t *testing.T) {
+	t.Run("get_ex", func(t *testing.T) {
+		runOnRedis(t, func(client *Redis) {
+			val, err := client.GetEx("getex_key", 10)
+			assert.Equal(t, "", val)
+			assert.Nil(t, err)
+
+			err = client.Set("getex_key", "getex_value")
+			assert.Nil(t, err)
+
+			val, err = client.GetEx("getex_key", 10)
+			assert.Nil(t, err)
+			assert.Equal(t, "getex_value", val)
+			val, err = client.Get("getex_key")
+			assert.Nil(t, err)
+			assert.Equal(t, "getex_value", val)
+
+			ttl, err := client.Ttl("getex_key")
+			assert.Nil(t, err)
+			assert.True(t, ttl > 0 && ttl <= 10)
+
+			val, err = client.GetEx("getex_key", 5)
+			assert.Nil(t, err)
+			assert.Equal(t, "getex_value", val)
+
+			ttl, err = client.Ttl("getex_key")
+			assert.Nil(t, err)
+			assert.True(t, ttl > 0 && ttl <= 5)
+		})
+	})
+
+	t.Run("get_ex_with_error", func(t *testing.T) {
+		runOnRedisWithError(t, func(client *Redis) {
+			_, err := newRedis(client.Addr, badType()).GetEx("hello", 10)
+			assert.Error(t, err)
+		})
+	})
+}
+
 func TestRedis_GetSet(t *testing.T) {
 	t.Run("set_get", func(t *testing.T) {
 		runOnRedis(t, func(client *Redis) {