storj/pkg/piecestore/rpc/server/store.go
Alexander Leitner 899e1e68f1
Add functions for signing and verifying during bandwidth exchange (#246)
* Added initial functions for signing and verifying

* whoops

* Get client up to speed

* Added initial functions for signing and verifying

* whoops

* Get client up to speed

* wip

* wip

* actual signatures in tests

(cherry picked from commit 1464853b737f1d712d64fbf90147f535525c8fd9)

* bugfixing

* Generate private key in example

* Generate signatures for pieceranger tests

* Update examples to use TLS

* Use private key from identity inside of example

* Use crypto.PrivateKey interface

* Change err name in defers

* Pass tests

* Pass identity Key to PSClient

* Get tests passing on travis

* Resolve linter complaints
2018-08-27 14:35:27 -04:00

99 lines
2.3 KiB
Go

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package server
import (
"context"
"io"
"log"
"github.com/zeebo/errs"
"storj.io/storj/pkg/piecestore"
"storj.io/storj/pkg/utils"
pb "storj.io/storj/protos/piecestore"
)
// OK - Success!
const OK = "OK"
// StoreError is a type of error for failures in Server.Store()
var StoreError = errs.Class("store error")
// Store incoming data using piecestore
func (s *Server) Store(reqStream pb.PieceStoreRoutes_StoreServer) (err error) {
ctx := reqStream.Context()
defer mon.Task()(&ctx)(&err)
// Receive id/ttl
recv, err := reqStream.Recv()
if err != nil {
return StoreError.Wrap(err)
}
if recv == nil {
return StoreError.New("Error receiving Piece metadata")
}
pd := recv.GetPiecedata()
if pd == nil {
return StoreError.New("PieceStore message is nil")
}
log.Printf("Storing %s...", pd.GetId())
if pd.GetId() == "" {
return StoreError.New("Piece ID not specified")
}
// If we put in the database first then that checks if the data already exists
if err = s.DB.AddTTLToDB(pd.GetId(), pd.GetExpirationUnixSec()); err != nil {
return StoreError.New("Failed to write expiration data to database")
}
total, err := s.storeData(ctx, reqStream, pd.GetId())
if err != nil {
return err
}
log.Printf("Successfully stored %s.", pd.GetId())
return reqStream.SendAndClose(&pb.PieceStoreSummary{Message: OK, TotalReceived: total})
}
func (s *Server) storeData(ctx context.Context, stream pb.PieceStoreRoutes_StoreServer, id string) (total int64, err error) {
defer mon.Task()(&ctx)(&err)
// Delete data if we error
defer func() {
if err != nil && err != io.EOF {
if deleteErr := s.deleteByID(id); deleteErr != nil {
log.Printf("Failed on deleteByID in Store: %s", deleteErr.Error())
}
}
}()
// Initialize file for storing data
storeFile, err := pstore.StoreWriter(id, s.DataDir)
if err != nil {
return 0, err
}
defer utils.LogClose(storeFile)
reader := NewStreamReader(s, stream)
defer func() {
baWriteErr := s.DB.WriteBandwidthAllocToDB(reader.bandwidthAllocation)
if baWriteErr != nil {
log.Printf("WriteBandwidthAllocToDB Error: %s\n", baWriteErr.Error())
}
}()
total, err = io.Copy(storeFile, reader)
if err != nil && err != io.EOF {
return 0, err
}
return total, nil
}