/
repository.go
234 lines (187 loc) · 5.53 KB
/
repository.go
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package file
import (
"context"
fb "github.com/alvidir/filebrowser"
cert "github.com/alvidir/filebrowser/certificate"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/primitive"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"go.uber.org/zap"
)
const (
MongoFileCollectionName = "files"
)
type mongoFile struct {
ID primitive.ObjectID `bson:"_id,omitempty"`
Name string `bson:"name"`
Flags Flag `bson:"flags"`
Permissions map[int32]cert.Permission `bson:"permissions,omitempty"`
Metadata map[string]string `bson:"metadata,omitempty"`
Data []byte `bson:"data,omitempty"`
}
func newMongoFile(f *File) (*mongoFile, error) {
oid := primitive.NilObjectID
if len(f.id) > 0 {
var err error
if oid, err = primitive.ObjectIDFromHex(f.id); err != nil {
return nil, err
}
}
return &mongoFile{
ID: oid,
Name: f.name,
Flags: f.flags,
Permissions: f.permissions,
Metadata: f.metadata,
Data: f.data,
}, nil
}
type MongoFileRepository struct {
conn *mongo.Collection
logger *zap.Logger
}
func NewMongoFileRepository(db *mongo.Database, logger *zap.Logger) *MongoFileRepository {
return &MongoFileRepository{
conn: db.Collection(MongoFileCollectionName),
logger: logger,
}
}
func (repo *MongoFileRepository) Create(ctx context.Context, file *File) error {
mongoFile, err := newMongoFile(file)
if err != nil {
repo.logger.Error("building mongo file",
zap.String("file_name", file.name),
zap.Error(err))
return fb.ErrUnknown
}
res, err := repo.conn.InsertOne(ctx, mongoFile)
if err != nil {
repo.logger.Error("performing insert one on mongo",
zap.String("file_name", file.name),
zap.Error(err))
return fb.ErrUnknown
}
if fileId, ok := res.InsertedID.(primitive.ObjectID); ok {
file.id = fileId.Hex()
return nil
}
repo.logger.Error("performing insert one on mongo",
zap.String("file_name", file.name),
zap.Error(err))
return fb.ErrUnknown
}
func (repo *MongoFileRepository) Find(ctx context.Context, id string) (*File, error) {
objID, err := primitive.ObjectIDFromHex(id)
if err != nil {
repo.logger.Error("parsing file id to ObjectID",
zap.String("file_id", id),
zap.Error(err))
return nil, fb.ErrUnknown
}
var mfile mongoFile
err = repo.conn.FindOne(ctx, bson.M{"_id": objID}).Decode(&mfile)
if err != nil {
repo.logger.Error("performing find one on mongo",
zap.String("file_id", id),
zap.Error(err))
return nil, fb.ErrUnknown
}
return repo.build(&mfile), nil
}
// FindAll returns all those files matching the given ids, excluding the data field
func (repo *MongoFileRepository) FindAll(ctx context.Context, ids []string) ([]*File, error) {
objIDs := make([]primitive.ObjectID, len(ids))
for index, id := range ids {
objID, err := primitive.ObjectIDFromHex(id)
if err != nil {
repo.logger.Error("parsing file id to ObjectID",
zap.String("file_id", id),
zap.Error(err))
return nil, fb.ErrUnknown
}
objIDs[index] = objID
}
// exclude data field from being loaded
opts := options.Find().SetProjection(bson.D{{Key: "data", Value: 0}})
cursor, err := repo.conn.Find(ctx, bson.M{"_id": bson.M{"$in": objIDs}}, opts)
if err != nil {
repo.logger.Error("performing find all on mongo",
zap.Strings("file_ids", ids),
zap.Error(err))
return nil, fb.ErrUnknown
}
mfiles := make([]mongoFile, len(ids))
if err := cursor.All(ctx, &mfiles); err != nil {
repo.logger.Error("decoding found items",
zap.Error(err))
return nil, fb.ErrUnknown
}
files := make([]*File, len(ids))
for index, mfile := range mfiles {
files[index] = repo.build(&mfile)
}
return files, nil
}
func (repo *MongoFileRepository) Save(ctx context.Context, file *File) error {
if file.protected {
repo.logger.Error("saving file",
zap.String("file_id", file.id),
zap.Error(fb.ErrProtectedContent))
return fb.ErrUnknown
}
mFile, err := newMongoFile(file)
if err != nil {
repo.logger.Error("building mongo file",
zap.String("file_id", file.id),
zap.Error(err))
return fb.ErrUnknown
}
result, err := repo.conn.ReplaceOne(ctx, bson.M{"_id": mFile.ID}, mFile)
if err != nil {
repo.logger.Error("performing replace one on mongo",
zap.String("file_id", file.id),
zap.Error(err))
return fb.ErrUnknown
}
if result.ModifiedCount == 0 {
repo.logger.Error("performing replace one on mongo",
zap.String("file_id", file.id),
zap.Int64("modified_count", result.ModifiedCount))
return fb.ErrUnknown
}
return nil
}
func (repo *MongoFileRepository) Delete(ctx context.Context, file *File) error {
objID, err := primitive.ObjectIDFromHex(file.id)
if err != nil {
repo.logger.Error("parsing file id to ObjectID",
zap.String("file_id", file.Id()),
zap.Error(err))
return fb.ErrUnknown
}
result, err := repo.conn.DeleteOne(ctx, bson.M{"_id": objID})
if err != nil {
repo.logger.Error("performing delete one on mongo",
zap.String("file_id", file.id),
zap.Error(err))
return fb.ErrUnknown
}
if result.DeletedCount == 0 {
repo.logger.Error("performing delete one on mongo",
zap.String("file_id", file.id),
zap.Int64("deleted_count", result.DeletedCount))
return fb.ErrUnknown
}
return nil
}
func (repo *MongoFileRepository) build(mfile *mongoFile) *File {
return &File{
id: mfile.ID.Hex(),
name: mfile.Name,
metadata: mfile.Metadata,
permissions: mfile.Permissions,
flags: mfile.Flags,
data: mfile.Data,
}
}