github.com/toplink-cn/moby@v0.0.0-20240305205811-460b4aebdf81/internal/testutils/specialimage/load.go (about)

     1  package specialimage
     2  
     3  import (
     4  	"bytes"
     5  	"context"
     6  	"encoding/json"
     7  	"errors"
     8  	"io"
     9  	"strings"
    10  	"testing"
    11  
    12  	"github.com/docker/docker/client"
    13  	"github.com/docker/docker/pkg/archive"
    14  	"github.com/docker/docker/pkg/jsonmessage"
    15  	"gotest.tools/v3/assert"
    16  )
    17  
    18  type SpecialImageFunc func(string) error
    19  
    20  func Load(ctx context.Context, t *testing.T, apiClient client.APIClient, imageFunc SpecialImageFunc) string {
    21  	tempDir := t.TempDir()
    22  
    23  	err := imageFunc(tempDir)
    24  	assert.NilError(t, err)
    25  
    26  	rc, err := archive.TarWithOptions(tempDir, &archive.TarOptions{})
    27  	assert.NilError(t, err)
    28  
    29  	defer rc.Close()
    30  
    31  	resp, err := apiClient.ImageLoad(ctx, rc, true)
    32  	assert.NilError(t, err, "Failed to load dangling image")
    33  
    34  	defer resp.Body.Close()
    35  
    36  	if !assert.Check(t, err) {
    37  		respBody, err := io.ReadAll(resp.Body)
    38  		if err != nil {
    39  			t.Fatalf("Failed to read response body: %v", err)
    40  			return ""
    41  		}
    42  		t.Fatalf("Failed load: %s", string(respBody))
    43  	}
    44  
    45  	all, err := io.ReadAll(resp.Body)
    46  	assert.NilError(t, err)
    47  
    48  	decoder := json.NewDecoder(bytes.NewReader(all))
    49  	for {
    50  		var msg jsonmessage.JSONMessage
    51  		err := decoder.Decode(&msg)
    52  		if errors.Is(err, io.EOF) {
    53  			break
    54  		} else {
    55  			assert.NilError(t, err)
    56  		}
    57  
    58  		msg.Stream = strings.TrimSpace(msg.Stream)
    59  
    60  		if _, imageID, hasID := strings.Cut(msg.Stream, "Loaded image ID: "); hasID {
    61  			return imageID
    62  		}
    63  		if _, imageRef, hasRef := strings.Cut(msg.Stream, "Loaded image: "); hasRef {
    64  			return imageRef
    65  		}
    66  	}
    67  
    68  	t.Fatalf("failed to read image ID\n%s", string(all))
    69  	return ""
    70  }