db17557d0d
* added spawn scripts * wip * Make server not require length * Added test for 0 length * Added test for accepting length of 0 * linter errors * Make store not take anything more than an id and maybe a ttl if you want
138 lines
3.1 KiB
Go
138 lines
3.1 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package server
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import (
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"io"
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"log"
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"os"
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"golang.org/x/net/context"
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"storj.io/storj/pkg/piecestore"
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"storj.io/storj/pkg/piecestore/rpc/server/ttl"
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pb "storj.io/storj/protos/piecestore"
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)
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// OK - Success!
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const OK = "OK"
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// Server -- GRPC server meta data used in route calls
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type Server struct {
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PieceStoreDir string
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DB *ttl.TTL
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}
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// Store -- Store incoming data using piecestore
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func (s *Server) Store(stream pb.PieceStoreRoutes_StoreServer) error {
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log.Println("Storing data...")
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// Receive initial meta data about what's being stored
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piece, err := stream.Recv()
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if err != nil {
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return err
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}
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// If we put in the database first then that checks if the data already exists
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if err := s.DB.AddTTLToDB(piece.Id, piece.Ttl); err != nil {
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log.Println(err)
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return err
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}
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// Initialize file for storing data
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storeFile, err := pstore.StoreWriter(piece.Id, s.PieceStoreDir)
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if err != nil {
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return err
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}
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defer storeFile.Close()
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reader := &StreamReader{stream: stream}
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total, err := io.Copy(storeFile, reader)
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if err != nil {
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return err
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}
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log.Println("Successfully stored data.")
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return stream.SendAndClose(&pb.PieceStoreSummary{Message: OK, TotalReceived: int64(total)})
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}
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// Retrieve -- Retrieve data from piecestore and send to client
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func (s *Server) Retrieve(pieceMeta *pb.PieceRetrieval, stream pb.PieceStoreRoutes_RetrieveServer) error {
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log.Println("Retrieving data...")
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path, err := pstore.PathByID(pieceMeta.Id, s.PieceStoreDir)
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if err != nil {
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return err
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}
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fileInfo, err := os.Stat(path)
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if err != nil {
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return err
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}
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// Read the size specified
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totalToRead := pieceMeta.Size
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// Read the entire file if specified -1
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if pieceMeta.Size <= -1 {
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totalToRead = fileInfo.Size()
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}
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storeFile, err := pstore.RetrieveReader(pieceMeta.Id, pieceMeta.Offset, totalToRead, s.PieceStoreDir)
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if err != nil {
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return err
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}
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defer storeFile.Close()
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writer := &StreamWriter{stream: stream}
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_, err = io.Copy(writer, storeFile)
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if err != nil {
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return err
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}
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log.Println("Successfully retrieved data.")
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return nil
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}
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// Piece -- Send meta data about a stored by by Id
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func (s *Server) Piece(ctx context.Context, in *pb.PieceId) (*pb.PieceSummary, error) {
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log.Println("Getting Meta data...")
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path, err := pstore.PathByID(in.Id, s.PieceStoreDir)
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if err != nil {
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return nil, err
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}
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fileInfo, err := os.Stat(path)
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if err != nil {
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return nil, err
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}
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// Read database to calculate expiration
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ttl, err := s.DB.GetTTLByID(in.Id)
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if err != nil {
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return nil, err
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}
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log.Println("Meta data retrieved.")
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return &pb.PieceSummary{Id: in.Id, Size: fileInfo.Size(), Expiration: ttl}, nil
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}
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// Delete -- Delete data by Id from piecestore
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func (s *Server) Delete(ctx context.Context, in *pb.PieceDelete) (*pb.PieceDeleteSummary, error) {
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log.Println("Deleting data...")
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if err := pstore.Delete(in.Id, s.PieceStoreDir); err != nil {
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return nil, err
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}
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if err := s.DB.DeleteTTLByID(in.Id); err != nil {
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return nil, err
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}
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log.Println("Successfully deleted data.")
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return &pb.PieceDeleteSummary{Message: OK}, nil
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}
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