github.com/containers/podman/v4@v4.9.4/pkg/bindings/images/push.go (about)

     1  package images
     2  
     3  import (
     4  	"context"
     5  	"encoding/json"
     6  	"errors"
     7  	"fmt"
     8  	"io"
     9  	"net/http"
    10  	"os"
    11  	"strconv"
    12  
    13  	imageTypes "github.com/containers/image/v5/types"
    14  	"github.com/containers/podman/v4/pkg/auth"
    15  	"github.com/containers/podman/v4/pkg/bindings"
    16  	"github.com/containers/podman/v4/pkg/domain/entities"
    17  )
    18  
    19  // Push is the binding for libpod's endpoints for push images.  Note that
    20  // `source` must be a referring to an image in the remote's container storage.
    21  // The destination must be a reference to a registry (i.e., of docker transport
    22  // or be normalized to one).  Other transports are rejected as they do not make
    23  // sense in a remote context.
    24  func Push(ctx context.Context, source string, destination string, options *PushOptions) error {
    25  	if options == nil {
    26  		options = new(PushOptions)
    27  	}
    28  	conn, err := bindings.GetClient(ctx)
    29  	if err != nil {
    30  		return err
    31  	}
    32  	header, err := auth.MakeXRegistryAuthHeader(&imageTypes.SystemContext{AuthFilePath: options.GetAuthfile()}, options.GetUsername(), options.GetPassword())
    33  	if err != nil {
    34  		return err
    35  	}
    36  
    37  	params, err := options.ToParams()
    38  	if err != nil {
    39  		return err
    40  	}
    41  	// SkipTLSVerify is special.  It's not being serialized by ToParams()
    42  	// because we need to flip the boolean.
    43  	if options.SkipTLSVerify != nil {
    44  		params.Set("tlsVerify", strconv.FormatBool(!options.GetSkipTLSVerify()))
    45  	}
    46  	params.Set("destination", destination)
    47  
    48  	path := fmt.Sprintf("/images/%s/push", source)
    49  	response, err := conn.DoRequest(ctx, nil, http.MethodPost, path, params, header)
    50  	if err != nil {
    51  		return err
    52  	}
    53  	defer response.Body.Close()
    54  
    55  	if !response.IsSuccess() {
    56  		return response.Process(err)
    57  	}
    58  
    59  	var writer io.Writer
    60  	if options.GetQuiet() {
    61  		writer = io.Discard
    62  	} else if progressWriter := options.GetProgressWriter(); progressWriter != nil {
    63  		writer = progressWriter
    64  	} else {
    65  		// Historically push writes status to stderr
    66  		writer = os.Stderr
    67  	}
    68  
    69  	dec := json.NewDecoder(response.Body)
    70  LOOP:
    71  	for {
    72  		var report entities.ImagePushStream
    73  		if err := dec.Decode(&report); err != nil {
    74  			if errors.Is(err, io.EOF) {
    75  				break
    76  			}
    77  			return err
    78  		}
    79  
    80  		select {
    81  		case <-response.Request.Context().Done():
    82  			break LOOP
    83  		default:
    84  			// non-blocking select
    85  		}
    86  
    87  		switch {
    88  		case report.Stream != "":
    89  			fmt.Fprint(writer, report.Stream)
    90  		case report.ManifestDigest != "":
    91  			options.ManifestDigest = &report.ManifestDigest
    92  		case report.Error != "":
    93  			// There can only be one error.
    94  			return errors.New(report.Error)
    95  		default:
    96  			return fmt.Errorf("failed to parse push results stream, unexpected input: %v", report)
    97  		}
    98  	}
    99  
   100  	return nil
   101  }