github.com/containerd/nerdctl@v1.7.7/cmd/nerdctl/compose_cp.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"errors"
    21  
    22  	"github.com/containerd/nerdctl/pkg/clientutil"
    23  	"github.com/containerd/nerdctl/pkg/cmd/compose"
    24  	"github.com/containerd/nerdctl/pkg/composer"
    25  	"github.com/containerd/nerdctl/pkg/rootlessutil"
    26  	"github.com/spf13/cobra"
    27  )
    28  
    29  func newComposeCopyCommand() *cobra.Command {
    30  	usage := `cp [OPTIONS] SERVICE:SRC_PATH DEST_PATH|-
    31         nerdctl compose cp [OPTIONS] SRC_PATH|- SERVICE:DEST_PATH`
    32  	var composeCpCommand = &cobra.Command{
    33  		Use:           usage,
    34  		Short:         "Copy files/folders between a service container and the local filesystem",
    35  		Args:          cobra.ExactArgs(2),
    36  		RunE:          composeCopyAction,
    37  		SilenceUsage:  true,
    38  		SilenceErrors: true,
    39  	}
    40  	composeCpCommand.Flags().Bool("dry-run", false, "Execute command in dry run mode")
    41  	composeCpCommand.Flags().BoolP("follow-link", "L", false, "Always follow symbol link in SRC_PATH")
    42  	composeCpCommand.Flags().Int("index", 0, "index of the container if service has multiple replicas")
    43  	return composeCpCommand
    44  }
    45  
    46  func composeCopyAction(cmd *cobra.Command, args []string) error {
    47  	globalOptions, err := processRootCmdFlags(cmd)
    48  	if err != nil {
    49  		return err
    50  	}
    51  	source := args[0]
    52  	if source == "" {
    53  		return errors.New("source can not be empty")
    54  	}
    55  	destination := args[1]
    56  	if destination == "" {
    57  		return errors.New("destination can not be empty")
    58  	}
    59  
    60  	dryRun, err := cmd.Flags().GetBool("dry-run")
    61  	if err != nil {
    62  		return err
    63  	}
    64  	followLink, err := cmd.Flags().GetBool("follow-link")
    65  	if err != nil {
    66  		return err
    67  	}
    68  	index, err := cmd.Flags().GetInt("index")
    69  	if err != nil {
    70  		return err
    71  	}
    72  	address := globalOptions.Address
    73  	// rootless cp runs in the host namespaces, so the address is different
    74  	if rootlessutil.IsRootless() {
    75  		address, err = rootlessutil.RootlessContainredSockAddress()
    76  		if err != nil {
    77  			return err
    78  		}
    79  	}
    80  	client, ctx, cancel, err := clientutil.NewClient(cmd.Context(), globalOptions.Namespace, address)
    81  	if err != nil {
    82  		return err
    83  	}
    84  	defer cancel()
    85  	options, err := getComposeOptions(cmd, globalOptions.DebugFull, globalOptions.Experimental)
    86  	if err != nil {
    87  		return err
    88  	}
    89  	c, err := compose.New(client, globalOptions, options, cmd.OutOrStdout(), cmd.ErrOrStderr())
    90  	if err != nil {
    91  		return err
    92  	}
    93  
    94  	co := composer.CopyOptions{
    95  		Source:      source,
    96  		Destination: destination,
    97  		Index:       index,
    98  		FollowLink:  followLink,
    99  		DryRun:      dryRun,
   100  	}
   101  	return c.Copy(ctx, co)
   102  
   103  }