void open( const fc::path& dir, bool create = true, size_t cache_size = 0 )
{ try {
FC_ASSERT( !is_open(), "Database is already open!" );
ldb::Options opts;
opts.comparator = &_comparer;
opts.create_if_missing = create;
opts.max_open_files = 64;
opts.compression = leveldb::kNoCompression;
if( cache_size > 0 )
{
opts.write_buffer_size = cache_size / 4; // up to two write buffers may be held in memory simultaneously
_cache.reset( leveldb::NewLRUCache( cache_size / 2 ) );
opts.block_cache = _cache.get();
}
if( ldb::kMajorVersion > 1 || ( leveldb::kMajorVersion == 1 && leveldb::kMinorVersion >= 16 ) )
{
// LevelDB versions before 1.16 consider short writes to be corruption. Only trigger error
// on corruption in later versions.
opts.paranoid_checks = true;
}
_read_options.verify_checksums = true;
_iter_options.verify_checksums = true;
_iter_options.fill_cache = false;
_sync_options.sync = true;
// Given path must exist to succeed toNativeAnsiPath
fc::create_directories( dir );
std::string ldbPath = dir.to_native_ansi_path();
ldb::DB* ndb = nullptr;
const auto ntrxstat = ldb::DB::Open( opts, ldbPath.c_str(), &ndb );
if( !ntrxstat.ok() )
{
elog( "Failure opening database: ${db}\nStatus: ${msg}", ("db",dir)("msg",ntrxstat.ToString()) );
FC_THROW_EXCEPTION( level_pod_map_open_failure, "Failure opening database: ${db}\nStatus: ${msg}",
("db",dir)("msg",ntrxstat.ToString()) );
}
_db.reset( ndb );
try_upgrade_db( dir, ndb, fc::get_typename<Value>::name(), sizeof( Value ) );
} FC_CAPTURE_AND_RETHROW( (dir)(create)(cache_size) ) }
void open( const fc::path& dir, bool create = true, size_t cache_size = 0 )
{ try {
ldb::Options opts;
opts.comparator = &_comparer;
opts.create_if_missing = create;
if (cache_size) {
_cache.reset(leveldb::NewLRUCache(cache_size));
opts.block_cache = _cache.get();
}
/*
if( ldb::kMajorVersion > 1 || ( leveldb::kMajorVersion == 1 && leveldb::kMinorVersion >= 16 ) )
{
// LevelDB versions before 1.16 consider short writes to be corruption. Only trigger error
// on corruption in later versions.
opts.paranoid_checks = true;
}
opts.max_open_files = 64;
_read_options.verify_checksums = true;
_iter_options.verify_checksums = true;
_iter_options.fill_cache = false;
_sync_options.sync = true;
*/
/// \warning Given path must exist to succeed toNativeAnsiPath
fc::create_directories(dir);
std::string ldbPath = dir.to_native_ansi_path();
ldb::DB* ndb = nullptr;
auto ntrxstat = ldb::DB::Open( opts, ldbPath.c_str(), &ndb );
if( !ntrxstat.ok() )
{
FC_THROW_EXCEPTION( db_in_use_exception, "Unable to open database ${db}\n\t${msg}",
("db",dir)
("msg",ntrxstat.ToString())
);
}
_db.reset(ndb);
try_upgrade_db( dir,ndb, fc::get_typename<Value>::name(),sizeof(Value) );
} FC_RETHROW_EXCEPTIONS( warn, "" ) }
void open( const fc::path& dir, bool create = true )
{
ldb::Options opts;
opts.create_if_missing = create;
opts.comparator = & _comparer;
/// \waring Given path must exist to succeed toNativeAnsiPath
fc::create_directories(dir);
std::string ldbPath = dir.to_native_ansi_path();
ldb::DB* ndb = nullptr;
auto ntrxstat = ldb::DB::Open( opts, ldbPath.c_str(), &ndb );
if( !ntrxstat.ok() )
{
FC_THROW_EXCEPTION( db_in_use_exception, "Unable to open database ${db}\n\t${msg}",
("db",dir)
("msg",ntrxstat.ToString())
);
}
_db.reset(ndb);
try_upgrade_db( dir,ndb, fc::get_typename<Value>::name(),sizeof(Value) );
}
