github.com/akashshinde/docker@v1.9.1/daemon/attach.go (about)

     1  package daemon
     2  
     3  import (
     4  	"io"
     5  
     6  	"github.com/docker/docker/pkg/stdcopy"
     7  )
     8  
     9  // ContainerAttachWithLogsConfig holds the streams to use when connecting to a container to view logs.
    10  type ContainerAttachWithLogsConfig struct {
    11  	InStream                       io.ReadCloser
    12  	OutStream                      io.Writer
    13  	UseStdin, UseStdout, UseStderr bool
    14  	Logs, Stream                   bool
    15  }
    16  
    17  // ContainerAttachWithLogs attaches to logs according to the config passed in. See ContainerAttachWithLogsConfig.
    18  func (daemon *Daemon) ContainerAttachWithLogs(prefixOrName string, c *ContainerAttachWithLogsConfig) error {
    19  	container, err := daemon.Get(prefixOrName)
    20  	if err != nil {
    21  		return err
    22  	}
    23  
    24  	var errStream io.Writer
    25  
    26  	if !container.Config.Tty {
    27  		errStream = stdcopy.NewStdWriter(c.OutStream, stdcopy.Stderr)
    28  		c.OutStream = stdcopy.NewStdWriter(c.OutStream, stdcopy.Stdout)
    29  	} else {
    30  		errStream = c.OutStream
    31  	}
    32  
    33  	var stdin io.ReadCloser
    34  	var stdout, stderr io.Writer
    35  
    36  	if c.UseStdin {
    37  		stdin = c.InStream
    38  	}
    39  	if c.UseStdout {
    40  		stdout = c.OutStream
    41  	}
    42  	if c.UseStderr {
    43  		stderr = errStream
    44  	}
    45  
    46  	return container.attachWithLogs(stdin, stdout, stderr, c.Logs, c.Stream)
    47  }
    48  
    49  // ContainerWsAttachWithLogsConfig attach with websockets, since all
    50  // stream data is delegated to the websocket to handle there.
    51  type ContainerWsAttachWithLogsConfig struct {
    52  	InStream             io.ReadCloser
    53  	OutStream, ErrStream io.Writer
    54  	Logs, Stream         bool
    55  }
    56  
    57  // ContainerWsAttachWithLogs websocket connection
    58  func (daemon *Daemon) ContainerWsAttachWithLogs(prefixOrName string, c *ContainerWsAttachWithLogsConfig) error {
    59  	container, err := daemon.Get(prefixOrName)
    60  	if err != nil {
    61  		return err
    62  	}
    63  	return container.attachWithLogs(c.InStream, c.OutStream, c.ErrStream, c.Logs, c.Stream)
    64  }