Implement ProtoDatabase::GetEntry

components/leveldb_proto/leveldb_database.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/leveldb_proto/leveldb_database.h"
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 105 matching lines @@
   leveldb::ReadOptions options;
   std::unique_ptr<leveldb::Iterator> db_iterator(db_->NewIterator(options));
   for (db_iterator->SeekToFirst(); db_iterator->Valid(); db_iterator->Next()) {
     leveldb::Slice value_slice = db_iterator->value();
     std::string entry(value_slice.data(), value_slice.size());
     entries->push_back(entry);
   }
   return true;
 }
 
+bool LevelDB::Get(const std::string& key, bool* found, std::string* entry) {
+  DFAKE_SCOPED_LOCK(thread_checker_);
+  if (!db_)
+    return false;
+
+  leveldb::ReadOptions options;
+  leveldb::Status status = db_->Get(options, key, entry);
+  if (status.ok()) {
+    *found = true;
+    return true;
+  }
+  if (status.IsNotFound()) {
+    *found = false;
+    return true;
+  }
+
+  DLOG(WARNING) << "Failed loading leveldb_proto entry with key \"" << key
+                << "\": " << status.ToString();
+  return false;
+}
+
 }  // namespace leveldb_proto