mirror of https://github.com/docker/cli.git
73 lines
2.1 KiB
Go
73 lines
2.1 KiB
Go
package containerizedengine
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import (
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"context"
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"sort"
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registryclient "github.com/docker/cli/cli/registry/client"
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"github.com/docker/distribution/reference"
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ver "github.com/hashicorp/go-version"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// GetEngineVersions reports the versions of the engine that are available
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func (c baseClient) GetEngineVersions(ctx context.Context, registryClient registryclient.RegistryClient, currentVersion, imageName string) (AvailableVersions, error) {
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imageRef, err := reference.ParseNormalizedNamed(imageName)
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if err != nil {
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return AvailableVersions{}, err
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}
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tags, err := registryClient.GetTags(ctx, imageRef)
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if err != nil {
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return AvailableVersions{}, err
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}
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return parseTags(tags, currentVersion)
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}
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func parseTags(tags []string, currentVersion string) (AvailableVersions, error) {
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var ret AvailableVersions
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currentVer, err := ver.NewVersion(currentVersion)
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if err != nil {
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return ret, errors.Wrapf(err, "failed to parse existing version %s", currentVersion)
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}
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downgrades := []DockerVersion{}
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patches := []DockerVersion{}
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upgrades := []DockerVersion{}
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currentSegments := currentVer.Segments()
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for _, tag := range tags {
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tmp, err := ver.NewVersion(tag)
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if err != nil {
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logrus.Debugf("Unable to parse %s: %s", tag, err)
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continue
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}
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testVersion := DockerVersion{Version: *tmp, Tag: tag}
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if testVersion.LessThan(currentVer) {
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downgrades = append(downgrades, testVersion)
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continue
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}
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testSegments := testVersion.Segments()
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// lib always provides min 3 segments
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if testSegments[0] == currentSegments[0] &&
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testSegments[1] == currentSegments[1] {
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patches = append(patches, testVersion)
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} else {
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upgrades = append(upgrades, testVersion)
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}
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}
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sort.Slice(downgrades, func(i, j int) bool {
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return downgrades[i].Version.LessThan(&downgrades[j].Version)
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})
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sort.Slice(patches, func(i, j int) bool {
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return patches[i].Version.LessThan(&patches[j].Version)
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})
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sort.Slice(upgrades, func(i, j int) bool {
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return upgrades[i].Version.LessThan(&upgrades[j].Version)
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})
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ret.Downgrades = downgrades
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ret.Patches = patches
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ret.Upgrades = upgrades
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return ret, nil
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}
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