query: always return the size

fix ipfs#34

datastore.go

@@ -133,7 +133,7 @@ func (a *accessor) Query(q dsq.Query) (dsq.Results, error) {
 				return dsq.Result{}, false
 			}
 			k := string(i.Key())
-			e := dsq.Entry{Key: k}
+			e := dsq.Entry{Key: k, Size: len(i.Value())}
 
 			if !q.KeysOnly {
 				buf := make([]byte, len(i.Value()))

go.mod

@@ -1,8 +1,8 @@
 module github.com/ipfs/go-ds-leveldb
 
 require (
-	github.com/ipfs/go-datastore v0.1.1
+	github.com/ipfs/go-datastore v0.2.0
 	github.com/syndtr/goleveldb v1.0.0
 )
 
-go 1.13
+go 1.12

go.sum

@@ -10,8 +10,8 @@ github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
-github.com/ipfs/go-datastore v0.1.1 h1:F4k0TkTAZGLFzBOrVKDAvch6JZtuN4NHkfdcEZL50aI=
-github.com/ipfs/go-datastore v0.1.1/go.mod h1:w38XXW9kVFNp57Zj5knbKWM2T+KOZCGDRVNdgPHtbHw=
+github.com/ipfs/go-datastore v0.2.0 h1:5Wjw6YXzZmtqU1MSrlws64+oLmSqea7gEajTcJickh8=
+github.com/ipfs/go-datastore v0.2.0/go.mod h1:w38XXW9kVFNp57Zj5knbKWM2T+KOZCGDRVNdgPHtbHw=
 github.com/ipfs/go-ipfs-delay v0.0.0-20181109222059-70721b86a9a8/go.mod h1:8SP1YXK1M1kXuc4KJZINY3TQQ03J2rwBG9QfXmbRPrw=
 github.com/jbenet/goprocess v0.0.0-20160826012719-b497e2f366b8 h1:bspPhN+oKYFk5fcGNuQzp6IGzYQSenLEgH3s6jkXrWw=
 github.com/jbenet/goprocess v0.0.0-20160826012719-b497e2f366b8/go.mod h1:Ly/wlsjFq/qrU3Rar62tu1gASgGw6chQbSh/XgIIXCY=