github.com/juju/juju@v0.0.0-20240430160146-1752b71fcf00/core/resources/opened.go (about)

     1  // Copyright 2016 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package resources
     5  
     6  import (
     7  	"io"
     8  
     9  	"github.com/juju/errors"
    10  )
    11  
    12  // Opened provides both the resource info and content.
    13  type Opened struct {
    14  	Resource
    15  	io.ReadCloser
    16  }
    17  
    18  // Content returns the "content" for the opened resource.
    19  func (o Opened) Content() Content {
    20  	return Content{
    21  		Data:        o.ReadCloser,
    22  		Size:        o.Size,
    23  		Fingerprint: o.Fingerprint,
    24  	}
    25  }
    26  
    27  func (o Opened) Close() error {
    28  	return errors.Trace(o.ReadCloser.Close())
    29  }
    30  
    31  // Opener exposes the functionality for opening a resource.
    32  type Opener interface {
    33  	// OpenResource returns an opened resource with a reader that will
    34  	// stream the resource content.
    35  	OpenResource(name string) (Opened, error)
    36  }