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module_resolver.go
139 lines (118 loc) · 3.45 KB
/
module_resolver.go
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// Copyright (C) 2024 DeepSquare Association
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package module
import (
"context"
"fmt"
"io"
"os"
"regexp"
"strings"
"github.com/deepsquare-io/grid/sbatch-service/graph/model"
"github.com/go-git/go-billy/v5/osfs"
"github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/cache"
"github.com/go-git/go-git/v5/storage/filesystem"
"gopkg.in/yaml.v3"
)
const moduleFileName = "module.yaml"
var commitHashRegex = regexp.MustCompile(`^[a-f0-9]{7,40}$`)
func isCommitHash(str string) bool {
return commitHashRegex.MatchString(str)
}
func urlParse(url string) (host, owner, repo, path string) {
host, rest, _ := strings.Cut(url, "/")
owner, rest, _ = strings.Cut(rest, "/")
repo, path, _ = strings.Cut(rest, "/")
return host, owner, repo, path
}
func Resolve(
ctx context.Context,
j *model.Job,
s *model.Step,
repository string,
ref string,
) (*model.Module, error) {
host, owner, repo, path := urlParse(repository)
opts := &git.CloneOptions{
URL: fmt.Sprintf("https://%s/%s/%s", host, owner, repo),
}
switch {
case ref == "":
opts.ReferenceName = plumbing.HEAD
opts.Depth = 1
case ref != "" && !isCommitHash(ref):
if path != "" {
ref = fmt.Sprintf("%s/%s", path, ref)
}
opts.ReferenceName = plumbing.NewTagReferenceName(ref)
opts.Depth = 1
}
// Clone
dir, err := os.MkdirTemp("", "module")
if err != nil {
return nil, err
}
defer os.RemoveAll(dir)
fsstorDir, err := os.MkdirTemp("", "module")
if err != nil {
return nil, err
}
defer os.RemoveAll(fsstorDir)
fsstor := filesystem.NewStorage(osfs.New(fsstorDir), cache.NewObjectLRUDefault())
r, err := git.CloneContext(ctx, fsstor, osfs.New(dir), opts)
if err != nil {
return nil, fmt.Errorf("failed to clone: %w", err)
}
wt, err := r.Worktree()
if err != nil {
return nil, fmt.Errorf("failed to fetch worktree: %w", err)
}
if ref != "" && isCommitHash(ref) {
h, err := r.ResolveRevision(plumbing.Revision(ref))
if err != nil {
return nil, fmt.Errorf("failed to resolve revision: %w", err)
}
if err = wt.Checkout(&git.CheckoutOptions{
Hash: *h,
}); err != nil {
return nil, fmt.Errorf("failed to checkout: %w", err)
}
}
// Read the contents of the module file
filePath := moduleFileName
if path != "" {
filePath = fmt.Sprintf("%s/%s", path, moduleFileName)
}
file, err := wt.Filesystem.Open(filePath)
if err != nil {
return nil, fmt.Errorf("failed to find module.yaml: %w", err)
}
defer file.Close()
contents, err := io.ReadAll(file)
if err != nil {
return nil, fmt.Errorf("found module.yaml but failed to read module.yaml: %w", err)
}
rContents, err := Render(j, s, string(contents))
if err != nil {
return nil, err
}
module := &model.Module{}
if err := yaml.Unmarshal([]byte(rContents), module); err != nil {
return nil, err
}
return module, nil
}