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authorKazım SARIKAYA <kazimsarikaya@sanaldiyar.com>2021-01-03 19:04:25 +0300
committerKazım SARIKAYA <kazimsarikaya@sanaldiyar.com>2021-01-03 19:26:02 +0300
commit3ae91aff9ee67acac64f3e97908e55c5912a33fe (patch)
tree7d18b1bb2e748b32fa4fec77980b763846a3ed2a /pkg/bindings
parent142b4ac966e12559c534be380093a44d0a1d2959 (diff)
downloadpodman-3ae91aff9ee67acac64f3e97908e55c5912a33fe.tar.gz
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podman-remote fix sending tar content
1.) podman cannot send proper dockerfile when it is not inside root folder. 2.) support for sending symlinks and folders inside context dir 3.) when sending context dir as tar to remote, prevent sending items inside .dockerignore Signed-off-by: Kazım SARIKAYA <kazimsarikaya@sanaldiyar.com>
Diffstat (limited to 'pkg/bindings')
-rw-r--r--pkg/bindings/images/build.go138
1 files changed, 115 insertions, 23 deletions
diff --git a/pkg/bindings/images/build.go b/pkg/bindings/images/build.go
index d34ab87d9..02765816f 100644
--- a/pkg/bindings/images/build.go
+++ b/pkg/bindings/images/build.go
@@ -2,6 +2,7 @@ package images
import (
"archive/tar"
+ "compress/gzip"
"context"
"encoding/json"
"io"
@@ -18,6 +19,7 @@ import (
"github.com/containers/podman/v2/pkg/auth"
"github.com/containers/podman/v2/pkg/bindings"
"github.com/containers/podman/v2/pkg/domain/entities"
+ "github.com/containers/storage/pkg/fileutils"
"github.com/docker/go-units"
"github.com/hashicorp/go-multierror"
jsoniter "github.com/json-iterator/go"
@@ -138,12 +140,38 @@ func Build(ctx context.Context, containerFiles []string, options entities.BuildO
entries := make([]string, len(containerFiles))
copy(entries, containerFiles)
entries = append(entries, options.ContextDirectory)
- tarfile, err := nTar(entries...)
+
+ excludes := options.Excludes
+ if len(excludes) == 0 {
+ excludes, err = parseDockerignore(options.ContextDirectory)
+ if err != nil {
+ return nil, err
+ }
+ }
+
+ tarfile, err := nTar(excludes, entries...)
if err != nil {
+ logrus.Errorf("cannot tar container entries %v error: %v", entries, err)
return nil, err
}
defer tarfile.Close()
- params.Set("dockerfile", filepath.Base(containerFiles[0]))
+
+ containerFile, err := filepath.Abs(entries[0])
+ if err != nil {
+ logrus.Errorf("cannot find absolute path of %v: %v", entries[0], err)
+ return nil, err
+ }
+ contextDir, err := filepath.Abs(entries[1])
+ if err != nil {
+ logrus.Errorf("cannot find absolute path of %v: %v", entries[1], err)
+ return nil, err
+ }
+
+ if strings.HasPrefix(containerFile, contextDir+string(filepath.Separator)) {
+ containerFile = strings.TrimPrefix(containerFile, contextDir+string(filepath.Separator))
+ }
+
+ params.Set("dockerfile", containerFile)
conn, err := bindings.GetClient(ctx)
if err != nil {
@@ -200,52 +228,116 @@ func Build(ctx context.Context, containerFiles []string, options entities.BuildO
}
}
-func nTar(sources ...string) (io.ReadCloser, error) {
+func nTar(excludes []string, sources ...string) (io.ReadCloser, error) {
+ pm, err := fileutils.NewPatternMatcher(excludes)
+ if err != nil {
+ return nil, errors.Wrapf(err, "error processing excludes list %v", excludes)
+ }
+
if len(sources) == 0 {
return nil, errors.New("No source(s) provided for build")
}
pr, pw := io.Pipe()
- tw := tar.NewWriter(pw)
+ gw := gzip.NewWriter(pw)
+ tw := tar.NewWriter(gw)
var merr error
go func() {
defer pw.Close()
+ defer gw.Close()
defer tw.Close()
for _, src := range sources {
- s := src
- err := filepath.Walk(s, func(path string, info os.FileInfo, err error) error {
+ s, err := filepath.Abs(src)
+ if err != nil {
+ logrus.Errorf("cannot stat one of source context: %v", err)
+ merr = multierror.Append(merr, err)
+ return
+ }
+
+ err = filepath.Walk(s, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
- if !info.Mode().IsRegular() || path == s {
- return nil
- }
- f, lerr := os.Open(path)
- if lerr != nil {
- return lerr
+ if path == s {
+ return nil // skip root dir
}
name := strings.TrimPrefix(path, s+string(filepath.Separator))
- hdr, lerr := tar.FileInfoHeader(info, name)
- if lerr != nil {
- f.Close()
- return lerr
+
+ excluded, err := pm.Matches(filepath.ToSlash(name)) // nolint:staticcheck
+ if err != nil {
+ return errors.Wrapf(err, "error checking if %q is excluded", name)
}
- hdr.Name = name
- if lerr := tw.WriteHeader(hdr); lerr != nil {
- f.Close()
- return lerr
+ if excluded {
+ return nil
}
- _, cerr := io.Copy(tw, f)
- f.Close()
- return cerr
+ if info.Mode().IsRegular() { // add file item
+ f, lerr := os.Open(path)
+ if lerr != nil {
+ return lerr
+ }
+
+ hdr, lerr := tar.FileInfoHeader(info, name)
+ if lerr != nil {
+ f.Close()
+ return lerr
+ }
+ hdr.Name = name
+ if lerr := tw.WriteHeader(hdr); lerr != nil {
+ f.Close()
+ return lerr
+ }
+
+ _, cerr := io.Copy(tw, f)
+ f.Close()
+ return cerr
+ } else if info.Mode().IsDir() { // add folders
+ hdr, lerr := tar.FileInfoHeader(info, name)
+ if lerr != nil {
+ return lerr
+ }
+ hdr.Name = name
+ if lerr := tw.WriteHeader(hdr); lerr != nil {
+ return lerr
+ }
+ } else if info.Mode()&os.ModeSymlink != 0 { // add symlinks as it, not content
+ link, err := os.Readlink(path)
+ if err != nil {
+ return err
+ }
+ hdr, lerr := tar.FileInfoHeader(info, link)
+ if lerr != nil {
+ return lerr
+ }
+ hdr.Name = name
+ if lerr := tw.WriteHeader(hdr); lerr != nil {
+ return lerr
+ }
+ } //skip other than file,folder and symlinks
+ return nil
})
merr = multierror.Append(merr, err)
}
}()
return pr, merr
}
+
+func parseDockerignore(root string) ([]string, error) {
+ ignore, err := ioutil.ReadFile(filepath.Join(root, ".dockerignore"))
+ if err != nil && !os.IsNotExist(err) {
+ return nil, errors.Wrapf(err, "error reading .dockerignore: '%s'", root)
+ }
+ rawexcludes := strings.Split(string(ignore), "\n")
+ excludes := make([]string, 0, len(rawexcludes))
+ for _, e := range rawexcludes {
+ if len(e) == 0 || e[0] == '#' {
+ continue
+ }
+ excludes = append(excludes, e)
+ }
+ return excludes, nil
+}