github.com/hyperledger-labs/bdls@v2.1.1+incompatible/integration/helpers/images.go (about)

     1  /*
     2  Copyright IBM Corp All Rights Reserved.
     3  
     4  SPDX-License-Identifier: Apache-2.0
     5  */
     6  
     7  package helpers
     8  
     9  import (
    10  	"encoding/base32"
    11  	"fmt"
    12  	"strings"
    13  
    14  	docker "github.com/fsouza/go-dockerclient"
    15  	"github.com/hyperledger/fabric/common/util"
    16  	. "github.com/onsi/ginkgo"
    17  	. "github.com/onsi/gomega"
    18  )
    19  
    20  func AssertImagesExist(imageNames ...string) {
    21  	dockerClient, err := docker.NewClientFromEnv()
    22  	Expect(err).NotTo(HaveOccurred())
    23  
    24  	for _, imageName := range imageNames {
    25  		images, err := dockerClient.ListImages(docker.ListImagesOptions{
    26  			Filter: imageName,
    27  		})
    28  		ExpectWithOffset(1, err).NotTo(HaveOccurred())
    29  
    30  		if len(images) != 1 {
    31  			Fail(fmt.Sprintf("missing required image: %s", imageName), 1)
    32  		}
    33  	}
    34  }
    35  
    36  // UniqueName generates base-32 enocded UUIDs for container names.
    37  func UniqueName() string {
    38  	name := base32.StdEncoding.WithPadding(base32.NoPadding).EncodeToString(util.GenerateBytesUUID())
    39  	return strings.ToLower(name)
    40  }