feat:[AH-630]: File manager support for HAR (#3251)

* feat:[AH-630]: fix checks
* feat:[AH-630]: fix checks
* feat:[AH-630]: fix checks
* Merge branch 'main' into AH-630
* feat:[AH-630]: review changes
* feat:[AH-630]: File manager support for HAR

registry/app/pkg/filemanager/app.go

@@ -0,0 +1,81 @@
+//  Copyright 2023 Harness, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filemanager
+
+import (
+	"context"
+	"crypto/rand"
+	"fmt"
+
+	"github.com/harness/gitness/registry/app/dist_temp/dcontext"
+	registrystorage "github.com/harness/gitness/registry/app/storage"
+	"github.com/harness/gitness/types"
+
+	"github.com/rs/zerolog/log"
+)
+
+const randomSecretSize = 32
+
+type App struct {
+	context.Context
+
+	Config         *types.Config
+	storageService *registrystorage.Service
+}
+
+// NewApp takes a configuration and returns a configured app.
+func NewApp(
+	ctx context.Context,
+	cfg *types.Config, storageService *registrystorage.Service,
+) *App {
+	app := &App{
+		Context:        ctx,
+		Config:         cfg,
+		storageService: storageService,
+	}
+	app.configureSecret(cfg)
+	return app
+}
+
+// configureSecret creates a random secret if a secret wasn't included in the
+// configuration.
+func (app *App) configureSecret(configuration *types.Config) {
+	if configuration.Registry.HTTP.Secret == "" {
+		var secretBytes [randomSecretSize]byte
+		if _, err := rand.Read(secretBytes[:]); err != nil {
+			panic(fmt.Sprintf("could not generate random bytes for HTTP secret: %v", err))
+		}
+		configuration.Registry.HTTP.Secret = string(secretBytes[:])
+		dcontext.GetLogger(app, log.Warn()).
+			Msg(
+				"No HTTP secret provided - generated random secret. This may cause problems with uploads if" +
+					" multiple registries are behind a load-balancer. To provide a shared secret," +
+					" set the GITNESS_REGISTRY_HTTP_SECRET environment variable.",
+			)
+	}
+}
+
+// GetBlobsContext context constructs the context object for the application. This only be
+// called once per request.
+func (app *App) GetBlobsContext(c context.Context, regID string, rootIdentifier string) *Context {
+	context := &Context{
+		App:     app,
+		Context: c,
+	}
+	blobStore := app.storageService.GenericBlobsStore(regID, rootIdentifier)
+	context.genericBlobStore = blobStore
+
+	return context
+}

registry/app/pkg/filemanager/context.go

@@ -0,0 +1,40 @@
+//  Copyright 2023 Harness, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filemanager
+
+import (
+	"context"
+
+	"github.com/harness/gitness/registry/app/storage"
+
+	v2 "github.com/distribution/distribution/v3/registry/api/v2"
+)
+
+// Context should contain the request specific context for use in across
+// handlers. Resources that don't need to be shared across handlers should not
+// be on this object.
+type Context struct {
+	*App
+	context.Context
+	URLBuilder       *v2.URLBuilder
+	genericBlobStore storage.GenericBlobStore
+	Upload           storage.BlobWriter
+}
+
+// Value overrides context.Context.Value to ensure that calls are routed to
+// correct context.
+func (ctx *Context) Value(key interface{}) interface{} {
+	return ctx.Context.Value(key)
+}

registry/app/pkg/filemanager/file_manager.go

@@ -0,0 +1,277 @@
+//  Copyright 2023 Harness, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filemanager
+
+import (
+	"context"
+	"fmt"
+	"mime/multipart"
+	"path"
+	"strings"
+
+	"github.com/harness/gitness/registry/app/pkg"
+	"github.com/harness/gitness/registry/app/storage"
+	"github.com/harness/gitness/registry/app/store"
+	"github.com/harness/gitness/registry/types"
+	"github.com/harness/gitness/store/database/dbtx"
+
+	"github.com/google/uuid"
+	"github.com/rs/zerolog/log"
+)
+
+const (
+	rootPathString = "/"
+	tmp            = "tmp"
+	files          = "files"
+	nodeLimit      = 1000
+)
+
+func NewFileManager(app *App, registryDao store.RegistryRepository, genericBlobDao store.GenericBlobRepository,
+	nodesDao store.NodesRepository,
+	tx dbtx.Transactor,
+) FileManager {
+	return FileManager{
+		App:            app,
+		registryDao:    registryDao,
+		genericBlobDao: genericBlobDao,
+		nodesDao:       nodesDao,
+		tx:             tx,
+	}
+}
+
+type FileManager struct {
+	App            *App
+	registryDao    store.RegistryRepository
+	genericBlobDao store.GenericBlobRepository
+	nodesDao       store.NodesRepository
+	tx             dbtx.Transactor
+}
+
+func (f *FileManager) UploadFile(
+	ctx context.Context,
+	filePath string,
+	regName string,
+	regID int64,
+	rootParentID int64,
+	rootIdentifier string,
+	file multipart.File,
+	filename string,
+) (pkg.FileInfo, error) {
+	// uploading the file to temporary path in file storage
+	blobContext := f.App.GetBlobsContext(ctx, regName, rootIdentifier)
+	pathUUID := uuid.NewString()
+	tmpPath := path.Join(rootPathString, rootIdentifier, tmp, pathUUID)
+	fw, err := blobContext.genericBlobStore.Create(ctx, tmpPath)
+
+	if err != nil {
+		log.Error().Msgf("failed to initiate the file upload for file with"+
+			" name : %s with error : %s", filename, err.Error())
+		return pkg.FileInfo{}, fmt.Errorf("failed to initiate the file upload "+
+			"for file with name : %s with error : %w", filename, err)
+	}
+	defer fw.Close()
+
+	fileInfo, err := blobContext.genericBlobStore.Write(ctx, fw, file)
+	if err != nil {
+		log.Error().Msgf("failed to upload the file on temparary location"+
+			" with name : %s with error : %s", filename, err.Error())
+		return pkg.FileInfo{}, fmt.Errorf("failed to upload the file on temparary "+
+			"location with name : %s with error : %w", filename, err)
+	}
+	fileInfo.Filename = filename
+
+	// Moving the file to permanent path in file storage
+	fileStoragePath := path.Join(rootPathString, rootIdentifier, files, fileInfo.Sha256)
+	err = blobContext.genericBlobStore.Move(ctx, tmpPath, fileStoragePath)
+
+	if err != nil {
+		log.Error().Msgf("failed to Move the file on permanent location "+
+			"with name : %s with error : %s", filename, err.Error())
+		return pkg.FileInfo{}, fmt.Errorf("failed to Move the file on permanent"+
+			" location with name : %s with error : %w", filename, err)
+	}
+
+	// Saving in the generic blobs table
+	var blobID = ""
+	gb := &types.GenericBlob{
+		RootParentID: rootParentID,
+		Sha1:         fileInfo.Sha1,
+		Sha256:       fileInfo.Sha256,
+		Sha512:       fileInfo.Sha512,
+		MD5:          fileInfo.MD5,
+		Size:         fileInfo.Size,
+	}
+	err = f.genericBlobDao.Create(ctx, gb)
+	if err != nil {
+		log.Error().Msgf("failed to save generic blob in db with "+
+			"sha256 : %s, err: %s", fileInfo.Sha256, err.Error())
+		return pkg.FileInfo{}, fmt.Errorf("failed to save generic blob"+
+			" in db with sha256 : %s, err: %w", fileInfo.Sha256, err)
+	}
+	blobID = gb.ID
+	// Saving the nodes
+	err = f.tx.WithTx(ctx, func(ctx context.Context) error {
+		err = f.createNodes(ctx, filePath, blobID, regID)
+		if err != nil {
+			return err
+		}
+		return nil
+	})
+	if err != nil {
+		log.Error().Msgf("failed to save nodes for file : %s, with "+
+			"path : %s, err: %s", filename, filePath, err)
+		return pkg.FileInfo{}, fmt.Errorf("failed to save nodes for"+
+			" file : %s, with path : %s, err: %w", filename, filePath, err)
+	}
+	return fileInfo, nil
+}
+
+func (f *FileManager) createNodes(ctx context.Context, filePath string, blobID string, regID int64) error {
+	segments := strings.Split(filePath, rootPathString)
+	parentID := ""
+	// Start with root (-1)
+	// Iterate through segments and create Node objects
+	nodePath := ""
+	for i, segment := range segments {
+		if i >= nodeLimit { // Stop after 1000 iterations
+			break
+		}
+		if segment == "" {
+			continue // Skip empty segments
+		}
+		var nodeID string
+		var err error
+		nodePath += rootPathString + segment
+		if i == len(segments)-1 {
+			nodeID, err = f.SaveNode(ctx, filePath, blobID, regID, segment,
+				parentID, nodePath, true)
+			if err != nil {
+				return err
+			}
+		} else {
+			nodeID, err = f.SaveNode(ctx, filePath, "", regID, segment,
+				parentID, nodePath, false)
+			if err != nil {
+				return err
+			}
+		}
+		parentID = nodeID
+	}
+	return nil
+}
+
+func (f *FileManager) SaveNode(ctx context.Context, filePath string, blobID string, regID int64, segment string,
+	parentID string, nodePath string, isFile bool) (string, error) {
+	node := &types.Node{
+		Name:         segment,
+		RegistryID:   regID,
+		ParentNodeID: parentID,
+		IsFile:       isFile,
+		NodePath:     nodePath,
+		BlobID:       blobID,
+	}
+	err := f.nodesDao.Create(ctx, node)
+	if err != nil {
+		return "", fmt.Errorf("failed to create the node: %s, "+
+			"for path := %s", segment, filePath)
+	}
+	return node.ID, nil
+}
+
+func (f *FileManager) DownloadFile(
+	ctx context.Context,
+	filePath string,
+	regInfo types.Registry,
+	rootIdentifier string,
+) (fileReader *storage.FileReader, size int64, err error) {
+	node, err := f.nodesDao.GetByPathAndRegistryId(ctx, regInfo.ID, filePath)
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to get the node for path: %s, "+
+			"with registry: %s, with error %s", filePath, regInfo.Name, err)
+	}
+	blob, err := f.genericBlobDao.FindByID(ctx, node.BlobID)
+
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to get the blob for path: %s, "+
+			"with blob id: %s, with error %s", filePath, blob.ID, err)
+	}
+
+	completeFilaPath := path.Join(rootPathString + rootIdentifier + rootPathString + files + rootPathString + blob.Sha256)
+	//
+	blobContext := f.App.GetBlobsContext(ctx, regInfo.Name, rootIdentifier)
+	reader, err := blobContext.genericBlobStore.Get(ctx, completeFilaPath, blob.Size)
+
+	if err != nil {
+		return nil, 0, fmt.Errorf("failed to get the file for path: %s, "+
+			" with error %w", completeFilaPath, err)
+	}
+	return reader, blob.Size, nil
+}
+
+func (f *FileManager) DeleteFile(
+	ctx context.Context,
+	filePath string,
+	regID int,
+) error {
+	log.Ctx(ctx).Info().Msgf("%s%d", filePath, regID)
+	return nil
+}
+
+func (f *FileManager) HeadFile(
+	ctx context.Context,
+	filePath string,
+	regID int64,
+) (string, error) {
+	node, err := f.nodesDao.GetByPathAndRegistryId(ctx, regID, filePath)
+
+	if err != nil {
+		return "", fmt.Errorf("failed to get the node path mapping for path: %s, "+
+			"with error %w", filePath, err)
+	}
+	blob, err := f.genericBlobDao.FindByID(ctx, node.BlobID)
+
+	if err != nil {
+		return "", fmt.Errorf("failed to get the blob for path: %s, with blob id: %s,"+
+			" with error %w", filePath, node.BlobID, err)
+	}
+	return blob.Sha256, nil
+}
+
+func (f *FileManager) GetFileMetadata(
+	ctx context.Context,
+	filePath string,
+	regID int64,
+) (pkg.FileInfo, error) {
+	node, err := f.nodesDao.GetByPathAndRegistryId(ctx, regID, filePath)
+
+	if err != nil {
+		return pkg.FileInfo{}, fmt.Errorf("failed to get the node path mapping "+
+			"for path: %s, with error %w", filePath, err)
+	}
+	blob, err := f.genericBlobDao.FindByID(ctx, node.BlobID)
+
+	if err != nil {
+		return pkg.FileInfo{}, fmt.Errorf("failed to get the blob for path: %s, "+
+			"with blob id: %s, with error %s", filePath, node.BlobID, err)
+	}
+	return pkg.FileInfo{
+		Sha1:     blob.Sha1,
+		Size:     blob.Size,
+		Sha256:   blob.Sha256,
+		Sha512:   blob.Sha512,
+		MD5:      blob.MD5,
+		Filename: node.Name,
+	}, nil
+}

registry/app/pkg/filemanager/wire.go

@@ -0,0 +1,34 @@
+//  Copyright 2023 Harness, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filemanager
+
+import (
+	"github.com/harness/gitness/registry/app/store"
+	"github.com/harness/gitness/store/database/dbtx"
+
+	"github.com/google/wire"
+)
+
+func Provider(app *App, registryDao store.RegistryRepository, genericBlobDao store.GenericBlobRepository,
+	nodesDao store.NodesRepository,
+	tx dbtx.Transactor,
+) FileManager {
+	return NewFileManager(app, registryDao, genericBlobDao, nodesDao, tx)
+}
+
+var AppSet = wire.NewSet(NewApp)
+var Set = wire.NewSet(Provider)
+
+var WireSet = wire.NewSet(AppSet, Set)

registry/app/storage/blobs.go

@@ -176,4 +176,6 @@ type GenericBlobStore interface {
 	Write(ctx context.Context, w driver.FileWriter, file multipart.File) (pkg.FileInfo, error)
 	Move(ctx context.Context, srcPath string, dstPath string) error
 	Delete(ctx context.Context, filePath string) error
+
+	Get(ctx context.Context, filePath string, size int64) (*FileReader, error)
 }

registry/app/storage/storageservice.go

@@ -76,6 +76,14 @@ func (storage *Service) OciBlobsStore(ctx context.Context, repoKey string, rootP
 	}
 }
 
+func (storage *Service) GenericBlobsStore(repoKey string, rootParentRef string) GenericBlobStore {
+	return &genericBlobStore{
+		repoKey:       repoKey,
+		driver:        storage.driver,
+		rootParentRef: rootParentRef,
+	}
+}
+
 // path returns the canonical path for the blob identified by digest. The blob
 // may or may not exist.
 func PathFn(pathPrefix string, dgst digest.Digest) (string, error) {

registry/app/store/database.go

@@ -496,15 +496,20 @@ type NodesRepository interface {
 	// Create a node
 	Create(ctx context.Context, node *types.Node) error
 	// delete a node
-	deleteById(ctx context.Context, id int64) (err error)
+	DeleteById(ctx context.Context, id int64) (err error)
+
+	GetByPathAndRegistryId(
+		ctx context.Context, registryID int64,
+		path string,
+	) (*types.Node, error)
 }
 
 type GenericBlobRepository interface {
-	FindByID(ctx context.Context, id int64) (*types.GenericBlob, error)
+	FindByID(ctx context.Context, id string) (*types.GenericBlob, error)
 	FindBySha256AndRootParentID(
 		ctx context.Context, sha256 string,
 		rootParentID int64,
 	) (*types.GenericBlob, error)
-	Create(ctx context.Context, gb *types.GenericBlob) (*types.GenericBlob, error)
-	DeleteByID(ctx context.Context, id int64) error
+	Create(ctx context.Context, gb *types.GenericBlob) error
+	DeleteByID(ctx context.Context, id string) error
 }