Created
September 13, 2013 08:20
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FileStorage class to move gridFS from ReactiveMongo to service layer
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| package content | |
| import play.api.mvc.MultipartFormData | |
| import play.api.libs.Files | |
| import play.modules.reactivemongo.ReactiveMongoPlugin | |
| import reactivemongo.api.gridfs.GridFS | |
| import user.ProfileId | |
| import scala.concurrent.Future | |
| import reactivemongo.bson.{BSONDocument, BSONObjectID} | |
| import java.io.{InputStream, FileInputStream} | |
| import scala.concurrent.ExecutionContext | |
| import ExecutionContext.Implicits.global | |
| import reactivemongo.api.indexes.IndexType | |
| import reactivemongo.core.commands._ | |
| import reactivemongo.core.commands.Match | |
| import reactivemongo.api.gridfs.DefaultFileToSave | |
| import reactivemongo.api.indexes.Index | |
| import play.modules.reactivemongo.json.collection.JSONCollection | |
| import reactivemongo.core.commands.GroupField | |
| import reactivemongo.bson.BSONString | |
| import play.api.Play.current | |
| /** | |
| * @author alari (name.alari@gmail.com) | |
| * @since 11.09.13 21:52 | |
| */ | |
| object FileStorage { | |
| type F = MultipartFormData.FilePart[Files.TemporaryFile] | |
| lazy val db = ReactiveMongoPlugin.db | |
| val gridFS = GridFS(db, "file") | |
| val collection = db.collection[JSONCollection]("file.files") | |
| collection.indexesManager.ensure(Index(Seq("metadata.profileId" -> IndexType.Ascending))) | |
| implicit val reader = reactivemongo.api.gridfs.Implicits.DefaultReadFileReader | |
| def store(file: F, profileId: ProfileId): Future[String] = | |
| store(new FileInputStream(file.ref.file), file.filename, file.contentType, profileId) | |
| def store(stream: InputStream, filename: String, contentType: Option[String], profileId: ProfileId): Future[String] = { | |
| val newId = BSONObjectID.generate | |
| val metadata = BSONDocument("profileId" -> profileId.id) | |
| val saveFile = DefaultFileToSave(filename, contentType, metadata = metadata, id = newId) | |
| gridFS.writeFromInputStream(saveFile, stream).map { | |
| readFile => | |
| newId.stringify | |
| } | |
| } | |
| // TODO: make it work! | |
| def getFilesSize(profileId: ProfileId): Future[Option[Long]] = { | |
| db.command(Aggregate("file.files", Seq( | |
| Match(BSONDocument("metadata.profileId" -> BSONString(profileId.stringId))), | |
| GroupField("metadata.profileId")("total" -> SumField("length")) | |
| ))).map { | |
| stream => | |
| stream.headOption.map(_.getAs[Long]("total")).getOrElse(None) | |
| } | |
| } | |
| def remove(fileId: String) = gridFS.remove(BSONObjectID(fileId)) | |
| def find(fileId: String) = gridFS.find(BSONDocument("_id" -> BSONObjectID(fileId))) | |
| } |
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