queryStorageAt method

Future<List<StorageChangeSet>> queryStorageAt(
  1. List<StorageKey> keys,
  2. {BlockHash? at}
)

Query storage entries (by key) starting at block hash given as the second parameter.

Implementation

Future<List<StorageChangeSet>> queryStorageAt(List<StorageKey> keys,
    {BlockHash? at}) async {
  final List<dynamic> params = [
    keys.map((key) => '0x${hex.encode(key)}').toList()
  ];
  if (at != null) {
    params.add('0x${hex.encode(at)}');
  }
  final response = await _provider.send('state_queryStorageAt', params);
  return (response.result as List)
      .cast<Map<String, dynamic>>()
      .map((changeSet) => StorageChangeSet.fromJson(changeSet))
      .toList();
}