temporary

Documentation

Overview

将io.Reader转换成io.ReadSeeker。 功能

1. 超过一定大小、将临时缓冲转成临时文件
2. 异步读取源信息
3. 异步读取源信息后关闭

Attention

使用异步读取数据时候, 在调用其他方法之前一定要先使用Await。
该操作等待全部数据的加载, 同时可以处理读取数据时的错误。

Index

• Constants
• Variables
• type Temporary
  • func NewAsyncTemporary(reader io.Reader, maxBufferSize int64, fileDir string, filePattern string) (_ Temporary)
  • func NewMustCloseReaderAsyncTemporary(readcloser io.ReadCloser, maxBufferSize int64, fileDir string, ...) (_ Temporary)
  • func NewTemporary(reader io.Reader, maxBufferSize int64, fileDir string, filePattern string) (_ Temporary, err error)

Constants

const (
	TemporaryBuffer string = "Buffer"
	TemporaryFile   string = "File"
)

Variables

var (
	ErrBufferTooLarge             error = fmt.Errorf("buffer too large")
	ErrBufferSeekInvalidWhence    error = fmt.Errorf("buffer seek invalid whence")
	ErrBufferSeekNegativePosition error = fmt.Errorf("buffer seek negative position")
)

var (
	ErrFileSeekInvalidWhence    error = fmt.Errorf("file seek invalid whence")
	ErrFileSeekNegativePosition error = fmt.Errorf("file seek negative position")
)

Types

type Temporary

type Temporary interface {
	Await() error
	Size() int64
	Type() string
	Name() string
	Bytes() []byte
	io.Reader
	io.Seeker
	io.Closer
}

func NewAsyncTemporary

func NewAsyncTemporary(reader io.Reader, maxBufferSize int64, fileDir string, filePattern string) (_ Temporary)

func NewMustCloseReaderAsyncTemporary

func NewMustCloseReaderAsyncTemporary(readcloser io.ReadCloser, maxBufferSize int64, fileDir string, filePattern string) (_ Temporary)

func NewTemporary

func NewTemporary(reader io.Reader, maxBufferSize int64, fileDir string, filePattern string) (_ Temporary, err error)