/// <summary>
/// Get a block fetcher of the specified chain from the specified checkpoint
/// </summary>
/// <param name="checkpoint">The checkpoint to load from</param>
/// <param name="chain">The chain to fetcher (default: the Node's main chain)</param>
/// <returns>A BlockFetcher for enumerating blocks and saving progression</returns>
public BlockFetcher GetBlockFetcher(Checkpoint checkpoint, Node node, ChainBase chain = null)
{
if (checkpoint == null)
{
throw new ArgumentNullException("checkpoint");
}
if (node == null)
{
throw new ArgumentNullException("node");
}
chain = chain ?? GetNodeChain(node);
IndexerTrace.CheckpointLoaded(chain.FindFork(checkpoint.BlockLocator), checkpoint.CheckpointName);
return(new BlockFetcher(checkpoint, new NodeBlocksRepository(node), chain)
{
NeedSaveInterval = CheckpointInterval,
FromHeight = FromHeight,
ToHeight = ToHeight
});
}
