github.com/sudo-bmitch/version-bump@v0.0.0-20240503123857-70b0e3f646dd/internal/source/registry.go (about)

     1  package source
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  
     7  	"github.com/regclient/regclient"
     8  	"github.com/regclient/regclient/types/ref"
     9  	"github.com/sudo-bmitch/version-bump/internal/config"
    10  )
    11  
    12  const ()
    13  
    14  type registry struct {
    15  	conf config.Source
    16  	rc   *regclient.RegClient
    17  }
    18  
    19  func newRegistry(conf config.Source) Source {
    20  	rc := regclient.New(
    21  		regclient.WithDockerCreds(),
    22  	)
    23  	return registry{conf: conf, rc: rc}
    24  }
    25  
    26  func (r registry) Get(data config.SourceTmplData) (string, error) {
    27  	confExp, err := r.conf.ExpandTemplate(data)
    28  	if err != nil {
    29  		return "", fmt.Errorf("failed to expand template: %w", err)
    30  	}
    31  	if confExp.Args["type"] == "tag" {
    32  		return r.getTag(confExp)
    33  	}
    34  	// default request is for a digest
    35  	return r.getDigest(confExp)
    36  }
    37  
    38  func (r registry) getTag(confExp config.Source) (string, error) {
    39  	repo, ok := confExp.Args["repo"]
    40  	if !ok {
    41  		return "", fmt.Errorf("repo not defined")
    42  	}
    43  	repoRef, err := ref.New(repo)
    44  	if err != nil {
    45  		return "", fmt.Errorf("failed to parse repo: %w", err)
    46  	}
    47  	tags, err := r.rc.TagList(context.Background(), repoRef)
    48  	if err != nil {
    49  		return "", fmt.Errorf("failed to list tags: %w", err)
    50  	}
    51  	verData := VersionTmplData{
    52  		VerMap: map[string]string{},
    53  	}
    54  	for _, tag := range tags.Tags {
    55  		verData.VerMap[tag] = tag
    56  	}
    57  	if len(verData.VerMap) == 0 {
    58  		return "", fmt.Errorf("no matching tags found")
    59  	}
    60  	return procResult(confExp, verData)
    61  }
    62  
    63  func (r registry) getDigest(confExp config.Source) (string, error) {
    64  	image, ok := confExp.Args["image"]
    65  	if !ok {
    66  		return "", fmt.Errorf("image not defined")
    67  	}
    68  	imageRef, err := ref.New(image)
    69  	if err != nil {
    70  		return "", fmt.Errorf("failed to parse image: %w", err)
    71  	}
    72  	m, err := r.rc.ManifestHead(context.Background(), imageRef)
    73  	if err != nil {
    74  		return "", fmt.Errorf("failed to query image: %w", err)
    75  	}
    76  	verData := VersionTmplData{
    77  		Version: m.GetDescriptor().Digest.String(),
    78  	}
    79  	return procResult(confExp, verData)
    80  }
    81  
    82  func (r registry) Key(data config.SourceTmplData) (string, error) {
    83  	confExp, err := r.conf.ExpandTemplate(data)
    84  	if err != nil {
    85  		return "", fmt.Errorf("failed to expand template: %w", err)
    86  	}
    87  	return confExp.Key, nil
    88  }