2 files changed, 116 insertions, 0 deletions
diff --git a/workhorse/internal/lfs/lfs.go b/workhorse/internal/lfs/lfs.go
new file mode 100644
index 00000000000..ec48dc05ef9
--- /dev/null
+++ b/workhorse/internal/lfs/lfs.go
@@ -0,0 +1,55 @@
+/*
+In this file we handle git lfs objects downloads and uploads
+*/
+
+package lfs
+
+import (
+	"fmt"
+	"net/http"
+
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/api"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/config"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/filestore"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/upload"
+)
+
+type object struct {
+	size int64
+	oid  string
+}
+
+func (l *object) Verify(fh *filestore.FileHandler) error {
+	if fh.Size != l.size {
+		return fmt.Errorf("LFSObject: expected size %d, wrote %d", l.size, fh.Size)
+	}
+
+	if fh.SHA256() != l.oid {
+		return fmt.Errorf("LFSObject: expected sha256 %s, got %s", l.oid, fh.SHA256())
+	}
+
+	return nil
+}
+
+type uploadPreparer struct {
+	objectPreparer upload.Preparer
+}
+
+func NewLfsUploadPreparer(c config.Config, objectPreparer upload.Preparer) upload.Preparer {
+	return &uploadPreparer{objectPreparer: objectPreparer}
+}
+
+func (l *uploadPreparer) Prepare(a *api.Response) (*filestore.SaveFileOpts, upload.Verifier, error) {
+	opts, _, err := l.objectPreparer.Prepare(a)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	opts.TempFilePrefix = a.LfsOid
+
+	return opts, &object{oid: a.LfsOid, size: a.LfsSize}, nil
+}
+
+func PutStore(a *api.API, h http.Handler, p upload.Preparer) http.Handler {
+	return upload.BodyUploader(a, h, p)
+}
diff --git a/workhorse/internal/lfs/lfs_test.go b/workhorse/internal/lfs/lfs_test.go
new file mode 100644
index 00000000000..828ed1bfe90
--- /dev/null
+++ b/workhorse/internal/lfs/lfs_test.go
@@ -0,0 +1,61 @@
+package lfs_test
+
+import (
+	"testing"
+
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/api"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/config"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/lfs"
+	"gitlab.com/gitlab-org/gitlab-workhorse/internal/upload"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestLfsUploadPreparerWithConfig(t *testing.T) {
+	lfsOid := "abcd1234"
+	creds := config.S3Credentials{
+		AwsAccessKeyID:     "test-key",
+		AwsSecretAccessKey: "test-secret",
+	}
+
+	c := config.Config{
+		ObjectStorageCredentials: config.ObjectStorageCredentials{
+			Provider:      "AWS",
+			S3Credentials: creds,
+		},
+	}
+
+	r := &api.Response{
+		LfsOid: lfsOid,
+		RemoteObject: api.RemoteObject{
+			ID:                 "the upload ID",
+			UseWorkhorseClient: true,
+			ObjectStorage: &api.ObjectStorageParams{
+				Provider: "AWS",
+			},
+		},
+	}
+
+	uploadPreparer := upload.NewObjectStoragePreparer(c)
+	lfsPreparer := lfs.NewLfsUploadPreparer(c, uploadPreparer)
+	opts, verifier, err := lfsPreparer.Prepare(r)
+
+	require.NoError(t, err)
+	require.Equal(t, lfsOid, opts.TempFilePrefix)
+	require.True(t, opts.ObjectStorageConfig.IsAWS())
+	require.True(t, opts.UseWorkhorseClient)
+	require.Equal(t, creds, opts.ObjectStorageConfig.S3Credentials)
+	require.NotNil(t, verifier)
+}
+
+func TestLfsUploadPreparerWithNoConfig(t *testing.T) {
+	c := config.Config{}
+	r := &api.Response{RemoteObject: api.RemoteObject{ID: "the upload ID"}}
+	uploadPreparer := upload.NewObjectStoragePreparer(c)
+	lfsPreparer := lfs.NewLfsUploadPreparer(c, uploadPreparer)
+	opts, verifier, err := lfsPreparer.Prepare(r)
+
+	require.NoError(t, err)
+	require.False(t, opts.UseWorkhorseClient)
+	require.NotNil(t, verifier)
+}