github.com/cloudfoundry-attic/cli-with-i18n@v6.32.1-0.20171002233121-7401370d3b85+incompatible/api/cloudcontroller/pipebomb.go (about)

     1  package cloudcontroller
     2  
     3  import (
     4  	"io"
     5  
     6  	"code.cloudfoundry.org/cli/api/cloudcontroller/ccerror"
     7  )
     8  
     9  // Pipebomb is a wrapper around an io.Pipe's io.ReadCloser that turns it into a
    10  // ReadSeeker that errors on Seek calls.
    11  type Pipebomb struct {
    12  	io.ReadCloser
    13  }
    14  
    15  // Seek returns a PipeSeekError; allowing the top level calling function to
    16  // handle the retry instead of seeking back to the beginning of the Reader.
    17  func (*Pipebomb) Seek(offset int64, whence int) (int64, error) {
    18  	return 0, ccerror.PipeSeekError{}
    19  }
    20  
    21  // NewPipeBomb returns an io.WriteCloser that can be used to stream data to a
    22  // the Pipebomb.
    23  func NewPipeBomb() (*Pipebomb, io.WriteCloser) {
    24  	writerOutput, writerInput := io.Pipe()
    25  	return &Pipebomb{ReadCloser: writerOutput}, writerInput
    26  }