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package build
import (
"context"
"os"
"path"
"path/filepath"
"strconv"
"strings"
"github.com/docker/buildx/util/gitutil"
"github.com/docker/buildx/util/osutil"
"github.com/moby/buildkit/client"
specs "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
)
const DockerfileLabel = "com.docker.image.source.entrypoint"
type gitAttrsAppendFunc func(so *client.SolveOpt)
func gitAppendNoneFunc(_ *client.SolveOpt) {}
func getGitAttributes(ctx context.Context, contextPath, dockerfilePath string) (f gitAttrsAppendFunc, err error) {
defer func() {
if f == nil {
f = gitAppendNoneFunc
}
}()
if contextPath == "" {
return nil, nil
}
setGitLabels := false
if v, ok := os.LookupEnv("BUILDX_GIT_LABELS"); ok {
if v == "full" { // backward compatibility with old "full" mode
setGitLabels = true
} else if v, err := strconv.ParseBool(v); err == nil {
setGitLabels = v
}
}
setGitInfo := true
if v, ok := os.LookupEnv("BUILDX_GIT_INFO"); ok {
if v, err := strconv.ParseBool(v); err == nil {
setGitInfo = v
}
}
if !setGitLabels && !setGitInfo {
return nil, nil
}
// figure out in which directory the git command needs to run in
var wd string
if filepath.IsAbs(contextPath) {
wd = contextPath
} else {
wd, _ = filepath.Abs(filepath.Join(osutil.GetWd(), contextPath))
}
wd = osutil.SanitizePath(wd)
gitc, err := gitutil.New(gitutil.WithContext(ctx), gitutil.WithWorkingDir(wd))
if err != nil {
if st, err1 := os.Stat(path.Join(wd, ".git")); err1 == nil && st.IsDir() {
return nil, errors.Wrap(err, "git was not found in the system")
}
return nil, nil
}
if !gitc.IsInsideWorkTree() {
if st, err := os.Stat(path.Join(wd, ".git")); err == nil && st.IsDir() {
return nil, errors.New("failed to read current commit information with git rev-parse --is-inside-work-tree")
}
return nil, nil
}
root, err := gitc.RootDir()
if err != nil {
return nil, errors.Wrap(err, "failed to get git root dir")
}
res := make(map[string]string)
if sha, err := gitc.FullCommit(); err != nil && !gitutil.IsUnknownRevision(err) {
return nil, errors.Wrap(err, "failed to get git commit")
} else if sha != "" {
checkDirty := false
if v, ok := os.LookupEnv("BUILDX_GIT_CHECK_DIRTY"); ok {
if v, err := strconv.ParseBool(v); err == nil {
checkDirty = v
}
}
if checkDirty && gitc.IsDirty() {
sha += "-dirty"
}
if setGitLabels {
res["label:"+specs.AnnotationRevision] = sha
}
if setGitInfo {
res["vcs:revision"] = sha
}
}
if rurl, err := gitc.RemoteURL(); err == nil && rurl != "" {
if setGitLabels {
res["label:"+specs.AnnotationSource] = rurl
}
if setGitInfo {
res["vcs:source"] = rurl
}
}
if setGitLabels && root != "" {
if dockerfilePath == "" {
dockerfilePath = filepath.Join(wd, "Dockerfile")
}
if !filepath.IsAbs(dockerfilePath) {
dockerfilePath = filepath.Join(osutil.GetWd(), dockerfilePath)
}
if r, err := filepath.Rel(root, dockerfilePath); err == nil && !strings.HasPrefix(r, "..") {
res["label:"+DockerfileLabel] = r
}
}
return func(so *client.SolveOpt) {
if so.FrontendAttrs == nil {
so.FrontendAttrs = make(map[string]string)
}
for k, v := range res {
so.FrontendAttrs[k] = v
}
if !setGitInfo || root == "" {
return
}
for key, mount := range so.LocalMounts {
fs, ok := mount.(*fs)
if !ok {
continue
}
dir, err := filepath.EvalSymlinks(fs.dir) // keep same behavior as fsutil.NewFS
if err != nil {
continue
}
dir, err = filepath.Abs(dir)
if err != nil {
continue
}
if lp, err := osutil.GetLongPathName(dir); err == nil {
dir = lp
}
dir = osutil.SanitizePath(dir)
if r, err := filepath.Rel(root, dir); err == nil && !strings.HasPrefix(r, "..") {
so.FrontendAttrs["vcs:localdir:"+key] = r
}
}
}, nil
}
|
