package readers
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/safedep/dry/utils"
"github.com/safedep/vet/pkg/models"
)
type jsonDumpReader struct {
path string
}
// NewJsonDumpReader creates a [PackageManifestReader] to read JSON dumps from
// the given directory path. The JSON files in the directory must be generated
// with `--json-dump-dir` scan option. This reader will fail on first error
// while scanning and loading JSON manifests from file
func NewJsonDumpReader(path string) (PackageManifestReader, error) {
return &jsonDumpReader{
path: path,
}, nil
}
// Name returns the name of this reader
func (p *jsonDumpReader) Name() string {
return "JSON Dump Reader"
}
func (p *jsonDumpReader) ApplicationName() (string, error) {
return defaultApplicationName, nil
}
// EnumManifests iterates the target directory looking for only JSON files by
// extension and decoding them as [models.PackageManifest] model. Callback handler
// is invoked for each decoded package manifest
func (p *jsonDumpReader) EnumManifests(handler func(*models.PackageManifest,
PackageReader) error,
) error {
err := filepath.WalkDir(p.path, func(path string, info os.DirEntry, err error) error {
if err != nil {
return err
}
if info.IsDir() {
return nil
}
path, err = filepath.Abs(path)
if err != nil {
return err
}
ext := filepath.Ext(path)
if !strings.EqualFold(ext, ".json") {
return nil
}
data, err := os.ReadFile(path)
if err != nil {
return err
}
manifest := models.PackageManifest{
DependencyGraph: models.NewDependencyGraph[*models.Package](),
}
err = json.Unmarshal(data, &manifest)
if err != nil {
return err
}
err = p.validateManifestModel(&manifest)
if err != nil {
return err
}
// Fix manifest path to avoid dangling paths
manifest.Path = path
// Fix manifest reference in each package
for _, pkg := range manifest.GetPackages() {
pkg.Manifest = &manifest
}
return handler(&manifest,
NewManifestModelReader(&manifest))
})
return err
}
func (p *jsonDumpReader) validateManifestModel(m *models.PackageManifest) error {
if utils.IsEmptyString(m.Ecosystem) {
return fmt.Errorf("invalid manifest error: missing ecosystem")
}
return nil
}
