goleveldb: ForceCompact (#216)

* add force compact

* go mod tidy

* dont break the interface

* bring back remotedb

* fix lint

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/cosmos/gorocksdb v1.2.0
 	github.com/dgraph-io/badger/v2 v2.2007.2
 	github.com/gogo/protobuf v1.3.2
+	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/google/btree v1.0.0
 	github.com/jmhodges/levigo v1.0.0
 	github.com/stretchr/testify v1.7.0
@@ -21,7 +22,6 @@ require (
 	github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de // indirect
 	github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
-	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/golang/snappy v0.0.1 // indirect
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect

goleveldb.go

@@ -166,6 +166,10 @@ func (db *GoLevelDB) Stats() map[string]string {
 	return stats
 }
 
+func (db *GoLevelDB) ForceCompact(start, limit []byte) error {
+	return db.db.CompactRange(util.Range{Start: start, Limit: limit})
+}
+
 // NewBatch implements DB.
 func (db *GoLevelDB) NewBatch() Batch {
 	return newGoLevelDBBatch(db)