Files
athens/pkg/storage/s3/getter.go
Tomasz Tomalak 480d8c8e8c Implement storage.Backend for S3 storage (#750)
* Implement storage.Backend for S3 storage

* Adapt S3 storage test after refactor, Fix skiped minio tests

* Add defer to Close calls in s3.getter methods

* CR fixes

* Fix doc align

* Tweak err checks

* Fix parse test for S3 configs and cleanup error messages in storage.s3
2018-10-15 21:46:08 -04:00

106 lines
3.0 KiB
Go

package s3
import (
"context"
"fmt"
"io"
"io/ioutil"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/gomods/athens/pkg/config"
"github.com/gomods/athens/pkg/errors"
"github.com/gomods/athens/pkg/observ"
)
// Info implements the (./pkg/storage).Getter interface
func (s *Storage) Info(ctx context.Context, module, version string) ([]byte, error) {
const op errors.Op = "s3.Info"
ctx, span := observ.StartSpan(ctx, op.String())
defer span.End()
exists, err := s.Exists(ctx, module, version)
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
if !exists {
return nil, errors.E(op, errors.M(module), errors.V(version), errors.KindNotFound)
}
infoReader, err := s.open(ctx, config.PackageVersionedName(module, version, "info"))
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
defer infoReader.Close()
infoBytes, err := ioutil.ReadAll(infoReader)
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
return infoBytes, nil
}
// GoMod implements the (./pkg/storage).Getter interface
func (s *Storage) GoMod(ctx context.Context, module, version string) ([]byte, error) {
const op errors.Op = "s3.GoMod"
ctx, span := observ.StartSpan(ctx, op.String())
defer span.End()
exists, err := s.Exists(ctx, module, version)
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
if !exists {
return nil, errors.E(op, errors.M(module), errors.V(version), errors.KindNotFound)
}
modReader, err := s.open(ctx, config.PackageVersionedName(module, version, "mod"))
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
defer modReader.Close()
modBytes, err := ioutil.ReadAll(modReader)
if err != nil {
return nil, errors.E(op, fmt.Errorf("could not get new reader for mod file: %s", err), errors.M(module), errors.V(version))
}
return modBytes, nil
}
// Zip implements the (./pkg/storage).Getter interface
func (s *Storage) Zip(ctx context.Context, module, version string) (io.ReadCloser, error) {
const op errors.Op = "s3.Zip"
ctx, span := observ.StartSpan(ctx, op.String())
defer span.End()
exists, err := s.Exists(ctx, module, version)
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
if !exists {
return nil, errors.E(op, errors.M(module), errors.V(version), errors.KindNotFound)
}
zipReader, err := s.open(ctx, config.PackageVersionedName(module, version, "zip"))
if err != nil {
return nil, errors.E(op, err, errors.M(module), errors.V(version))
}
return zipReader, nil
}
func (s *Storage) open(ctx context.Context, path string) (io.ReadCloser, error) {
const op errors.Op = "s3.open"
ctx, span := observ.StartSpan(ctx, op.String())
defer span.End()
getParams := &s3.GetObjectInput{
Bucket: aws.String(s.bucket),
Key: aws.String(path),
}
goo, err := s.s3API.GetObjectWithContext(ctx, getParams)
if err != nil {
return nil, errors.E(op, err)
}
return goo.Body, nil
}