func main()

in sample/list_parts.go [24:75]
44 lines of code
8 McCabe index (conditional complexity)

func main() {
	flag.Parse()
	var (
		uploadId = "your upload id"
	)
	if len(region) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, region required")
	}

	if len(bucketName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, bucket name required")
	}

	if len(objectName) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, object name required")
	}

	if len(uploadId) == 0 {
		flag.PrintDefaults()
		log.Fatalf("invalid parameters, upload id required")
	}

	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		WithRegion(region)

	client := oss.NewClient(cfg)

	request := &oss.ListPartsRequest{
		Bucket:   oss.Ptr(bucketName),
		Key:      oss.Ptr(objectName),
		UploadId: oss.Ptr(uploadId),
	}

	p := client.NewListPartsPaginator(request)

	var i int
	log.Println("List Parts:")
	for p.HasNext() {
		i++
		page, err := p.NextPage(context.TODO())
		if err != nil {
			log.Fatalf("failed to get page %v, %v", i, err)
		}
		for _, part := range page.Parts {
			log.Printf("Part Number:%v, ETag:%v, Last Modified:%v, Size:%v, HashCRC64:%v\n", part.PartNumber, oss.ToString(part.ETag), oss.ToTime(part.LastModified), part.Size, oss.ToString(part.HashCRC64))
		}
	}
}