github.com/DaoCloud/dao@v0.0.0-20161212064103-c3dbfd13ee36/api/client/container/diff.go (about)

     1  package container
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"golang.org/x/net/context"
     7  
     8  	"github.com/docker/docker/api/client"
     9  	"github.com/docker/docker/cli"
    10  	"github.com/docker/docker/pkg/archive"
    11  	"github.com/spf13/cobra"
    12  )
    13  
    14  type diffOptions struct {
    15  	container string
    16  }
    17  
    18  // NewDiffCommand creates a new cobra.Command for `docker diff`
    19  func NewDiffCommand(dockerCli *client.DockerCli) *cobra.Command {
    20  	var opts diffOptions
    21  
    22  	cmd := &cobra.Command{
    23  		Use:   "diff CONTAINER",
    24  		Short: "查看容器文件系统的变化差异",
    25  		Args:  cli.ExactArgs(1),
    26  		RunE: func(cmd *cobra.Command, args []string) error {
    27  			opts.container = args[0]
    28  			return runDiff(dockerCli, &opts)
    29  		},
    30  	}
    31  
    32  	return cmd
    33  }
    34  
    35  func runDiff(dockerCli *client.DockerCli, opts *diffOptions) error {
    36  	if opts.container == "" {
    37  		return fmt.Errorf("容器名称不能为空")
    38  	}
    39  	ctx := context.Background()
    40  
    41  	changes, err := dockerCli.Client().ContainerDiff(ctx, opts.container)
    42  	if err != nil {
    43  		return err
    44  	}
    45  
    46  	for _, change := range changes {
    47  		var kind string
    48  		switch change.Kind {
    49  		case archive.ChangeModify:
    50  			kind = "C"
    51  		case archive.ChangeAdd:
    52  			kind = "A"
    53  		case archive.ChangeDelete:
    54  			kind = "D"
    55  		}
    56  		fmt.Fprintf(dockerCli.Out(), "%s %s\n", kind, change.Path)
    57  	}
    58  
    59  	return nil
    60  }