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local_image_resolver.go
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local_image_resolver.go
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package imgsrc
import (
"context"
"fmt"
"regexp"
"strings"
"github.com/docker/docker/api/types"
dockerclient "github.com/docker/docker/client"
dockerparser "github.com/novln/docker-parser"
"github.com/pkg/errors"
"github.com/superfly/flyctl/internal/cmdfmt"
"github.com/superfly/flyctl/iostreams"
"github.com/superfly/flyctl/terminal"
)
type localImageResolver struct{}
func (*localImageResolver) Name() string {
return "Local Image Reference"
}
func (*localImageResolver) Run(ctx context.Context, dockerFactory *dockerClientFactory, streams *iostreams.IOStreams, opts RefOptions) (*DeploymentImage, error) {
if !dockerFactory.mode.IsLocal() {
terminal.Debug("local docker daemon not available, skipping")
return nil, nil
}
if opts.Tag == "" {
opts.Tag = NewDeploymentTag(opts.AppName, opts.ImageLabel)
}
docker, err := dockerFactory.buildFn(ctx)
if err != nil {
return nil, err
}
fmt.Fprintf(streams.ErrOut, "Searching for image '%s' locally...\n", opts.ImageRef)
img, err := findImageWithDocker(ctx, docker, opts.ImageRef)
if err != nil {
return nil, err
}
if img == nil {
return nil, nil
}
fmt.Fprintf(streams.ErrOut, "image found: %s\n", img.ID)
if opts.Publish {
err = docker.ImageTag(ctx, img.ID, opts.Tag)
if err != nil {
return nil, errors.Wrap(err, "error tagging image")
}
defer clearDeploymentTags(ctx, docker, opts.Tag)
cmdfmt.PrintBegin(streams.ErrOut, "Pushing image to fly")
if err := pushToFly(ctx, docker, streams, opts.Tag); err != nil {
return nil, err
}
cmdfmt.PrintDone(streams.ErrOut, "Pushing image done")
}
di := &DeploymentImage{
ID: img.ID,
Tag: opts.Tag,
Size: img.Size,
}
return di, nil
}
var imageIDPattern = regexp.MustCompile("[a-f0-9]")
func findImageWithDocker(ctx context.Context, d *dockerclient.Client, imageName string) (*types.ImageSummary, error) {
ref, err := dockerparser.Parse(imageName)
if err != nil {
return nil, err
}
isID := imageIDPattern.MatchString(imageName)
images, err := d.ImageList(ctx, types.ImageListOptions{})
if err != nil {
return nil, err
}
if isID {
for _, img := range images {
if len(img.ID) < len(imageName)+7 {
continue
}
if img.ID[7:7+len(imageName)] == imageName {
terminal.Debug("Found image by id", imageName)
return &img, nil
}
}
}
searchTerms := []string{
imageName,
imageName + ":" + ref.Tag(),
ref.Name(),
ref.ShortName(),
ref.Remote(),
ref.Repository(),
}
terminal.Debug("Search terms:", searchTerms)
for _, img := range images {
for _, tag := range img.RepoTags {
// skip <none>:<none>
if strings.HasPrefix(tag, "<none>") {
continue
}
for _, term := range searchTerms {
if tag == term {
return &img, nil
}
}
}
}
return nil, nil
}