mirror of https://github.com/docker/buildx.git
116 lines
2.9 KiB
Go
116 lines
2.9 KiB
Go
package build
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import (
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"context"
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"os"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/docker/buildx/util/gitutil"
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specs "github.com/opencontainers/image-spec/specs-go/v1"
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"github.com/pkg/errors"
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)
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const DockerfileLabel = "com.docker.image.source.entrypoint"
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func getGitAttributes(ctx context.Context, contextPath string, dockerfilePath string) (res map[string]string, _ error) {
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res = make(map[string]string)
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if contextPath == "" {
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return
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}
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setGitLabels := false
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if v, ok := os.LookupEnv("BUILDX_GIT_LABELS"); ok {
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if v == "full" { // backward compatibility with old "full" mode
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setGitLabels = true
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} else if v, err := strconv.ParseBool(v); err == nil {
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setGitLabels = v
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}
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}
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setGitInfo := true
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if v, ok := os.LookupEnv("BUILDX_GIT_INFO"); ok {
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if v, err := strconv.ParseBool(v); err == nil {
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setGitInfo = v
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}
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}
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if !setGitLabels && !setGitInfo {
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return
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}
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// figure out in which directory the git command needs to run in
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var wd string
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if filepath.IsAbs(contextPath) {
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wd = contextPath
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} else {
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cwd, _ := os.Getwd()
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wd, _ = filepath.Abs(filepath.Join(cwd, contextPath))
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}
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gitc, err := gitutil.New(gitutil.WithContext(ctx), gitutil.WithWorkingDir(wd))
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if err != nil {
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if st, err := os.Stat(path.Join(wd, ".git")); err == nil && st.IsDir() {
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return res, errors.New("buildx: git was not found in the system. Current commit information was not captured by the build")
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}
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return
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}
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if !gitc.IsInsideWorkTree() {
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if st, err := os.Stat(path.Join(wd, ".git")); err == nil && st.IsDir() {
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return res, errors.New("buildx: failed to read current commit information with git rev-parse --is-inside-work-tree")
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}
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return res, nil
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}
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if sha, err := gitc.FullCommit(); err != nil && !gitutil.IsUnknownRevision(err) {
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return res, errors.Wrapf(err, "buildx: failed to get git commit")
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} else if sha != "" {
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checkDirty := false
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if v, ok := os.LookupEnv("BUILDX_GIT_CHECK_DIRTY"); ok {
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if v, err := strconv.ParseBool(v); err == nil {
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checkDirty = v
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}
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}
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if checkDirty && gitc.IsDirty() {
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sha += "-dirty"
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}
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if setGitLabels {
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res["label:"+specs.AnnotationRevision] = sha
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}
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if setGitInfo {
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res["vcs:revision"] = sha
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}
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}
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if rurl, err := gitc.RemoteURL(); err == nil && rurl != "" {
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if setGitLabels {
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res["label:"+specs.AnnotationSource] = rurl
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}
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if setGitInfo {
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res["vcs:source"] = rurl
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}
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}
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if setGitLabels {
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if root, err := gitc.RootDir(); err != nil {
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return res, errors.Wrapf(err, "buildx: failed to get git root dir")
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} else if root != "" {
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if dockerfilePath == "" {
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dockerfilePath = filepath.Join(wd, "Dockerfile")
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}
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if !filepath.IsAbs(dockerfilePath) {
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cwd, _ := os.Getwd()
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dockerfilePath = filepath.Join(cwd, dockerfilePath)
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}
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dockerfilePath, _ = filepath.Rel(root, dockerfilePath)
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if !strings.HasPrefix(dockerfilePath, "..") {
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res["label:"+DockerfileLabel] = dockerfilePath
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}
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}
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}
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return
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}
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