package ioutil

import "github.com/containerd/containerd/pkg/ioutil"

Index ¶

• func NewNopWriteCloser(w io.Writer) io.WriteCloser
• func NewSerialWriteCloser(wc io.WriteCloser) io.WriteCloser
• func NewWrapReadCloser(r io.Reader) io.ReadCloser
• func NewWriteCloseInformer(wc io.WriteCloser) (io.WriteCloser, <-chan struct{})
• type WriterGroup
• func NewWriterGroup() *WriterGroup
• func (g *WriterGroup) Add(key string, w io.WriteCloser)
• func (g *WriterGroup) Close()
• func (g *WriterGroup) Get(key string) io.WriteCloser
• func (g *WriterGroup) Remove(key string)
• func (g *WriterGroup) Write(p []byte) (int, error)

Functions ¶

func NewNopWriteCloser ¶

func NewNopWriteCloser(w io.Writer) io.WriteCloser

NewNopWriteCloser creates the nopWriteCloser from a writer.

func NewSerialWriteCloser ¶

func NewSerialWriteCloser(wc io.WriteCloser) io.WriteCloser

NewSerialWriteCloser creates a SerialWriteCloser from a write closer.

func NewWrapReadCloser ¶

func NewWrapReadCloser(r io.Reader) io.ReadCloser

NewWrapReadCloser creates a wrapReadCloser from a reader. NOTE(random-liu): To avoid goroutine leakage, the reader passed in must be eventually closed by the caller.

func NewWriteCloseInformer ¶

func NewWriteCloseInformer(wc io.WriteCloser) (io.WriteCloser, <-chan struct{})

NewWriteCloseInformer creates the writeCloseInformer from a write closer.

Types ¶

type WriterGroup ¶

type WriterGroup struct {
	// contains filtered or unexported fields
}

WriterGroup is a group of writers. Writer could be dynamically added and removed.

func NewWriterGroup ¶

func NewWriterGroup() *WriterGroup

NewWriterGroup creates an empty writer group.

func (*WriterGroup) Add ¶

func (g *WriterGroup) Add(key string, w io.WriteCloser)

Add adds a writer into the group. The writer will be closed if the writer group is closed.

func (*WriterGroup) Close ¶

func (g *WriterGroup) Close()

Close closes the writer group. Write will return error after closed.

func (*WriterGroup) Get ¶

func (g *WriterGroup) Get(key string) io.WriteCloser

Get gets a writer from the group, returns nil if the writer doesn't exist.

func (*WriterGroup) Remove ¶

func (g *WriterGroup) Remove(key string)

Remove removes a writer from the group.

func (*WriterGroup) Write ¶

func (g *WriterGroup) Write(p []byte) (int, error)

Write writes data into each writer. If a writer returns error, it will be closed and removed from the writer group. It returns error if writer group is empty.

Source Files ¶

read_closer.go write_closer.go writer_group.go