package docker import ( "fmt" "strings" "github.com/coreos/go-semver/semver" ) // DefaultTagSuffix returns a set of default suggested tags // based on the commit ref with an attached suffix. func DefaultTagSuffix(ref, suffix, commitBranch, defaultBranch string) []string { tags := DefaultTags(ref, commitBranch, defaultBranch) if len(suffix) == 0 { return tags } for i, tag := range tags { if tag == "latest" { tags[i] = suffix } else { tags[i] = fmt.Sprintf("%s-%s", tag, suffix) } } return tags } // DefaultTags returns a set of default suggested tags based on // the commit ref. func DefaultTags(ref, commitBranch, defaultBranch string) []string { if defaultBranch != "" && commitBranch != defaultBranch && !strings.HasPrefix(ref, "refs/tags/") { return []string{} } if !strings.HasPrefix(ref, "refs/tags/") { return []string{"latest"} } v := stripTagPrefix(ref) version, err := semver.NewVersion(v) if err != nil { return []string{"latest"} } if version.PreRelease != "" || version.Metadata != "" { return []string{ version.String(), } } if version.Major == 0 { return []string{ fmt.Sprintf("%d.%d", version.Major, version.Minor), fmt.Sprintf("%d.%d.%d", version.Major, version.Minor, version.Patch), } } return []string{ fmt.Sprint(version.Major), fmt.Sprintf("%d.%d", version.Major, version.Minor), fmt.Sprintf("%d.%d.%d", version.Major, version.Minor, version.Patch), } } func stripTagPrefix(ref string) string { ref = strings.TrimPrefix(ref, "refs/tags/") ref = strings.TrimPrefix(ref, "v") return ref }