swarm/network: fix chunk integrity checks (#3665)

* swarm/network: integrity on incoming known chunks
* swarm/network: fix integrity check for incoming chunks
* swarm/storage: imrpoved integrity checking on chunks
* dbstore panics on corrupt chunk entry an prompts user to run cleandb
* memstore adds logging for garbage collection
* dbstore refactor item delete. correct partial deletes in Get
* cmd/swarm: added cleandb subcommand

1 files changed, 7 insertions, 0 deletions

diff --git a/swarm/storage/memstore.go b/swarm/storage/memstore.go
index e55abb45f..7903d33e7 100644
--- a/swarm/storage/memstore.go
+++ b/swarm/storage/memstore.go
@@ -20,6 +20,9 @@ package storage
 
 import (
 	"sync"
+
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/logger/glog"
 )
 
 const (
@@ -284,7 +287,11 @@ func (s *MemStore) removeOldest() {
 	}
 
 	if node.entry.dbStored != nil {
+		glog.V(logger.Detail).Infof("Memstore Clean: Waiting for chunk %v to be saved", node.entry.Key.Log())
 		<-node.entry.dbStored
+		glog.V(logger.Detail).Infof("Memstore Clean: Chunk %v saved to DBStore. Ready to clear from mem.", node.entry.Key.Log())
+	} else {
+		glog.V(logger.Detail).Infof("Memstore Clean: Chunk %v already in DB. Ready to delete.", node.entry.Key.Log())
 	}
 
 	if node.entry.SData != nil {