Fix fetching inexistent batch tokens

4 years ago · 600df6d2ec
parent c9de044e32
commit 600df6d2ec
1 changed files with 5 additions and 2 deletions
--- a/src/Cache.cpp
+++ b/src/Cache.cpp
@ -687,11 +687,14 @@ Cache::nextBatchToken() const
        auto txn = lmdb::txn::begin(env_, nullptr, MDB_RDONLY);
        lmdb::val token;

-        lmdb::dbi_get(txn, syncStateDb_, NEXT_BATCH_KEY, token);
+        auto result = lmdb::dbi_get(txn, syncStateDb_, NEXT_BATCH_KEY, token);

        txn.commit();

-        return std::string(token.data(), token.size());
+        if (result)
+                return std::string(token.data(), token.size());
+        else
+                return "";
 }

 void