Beispiel #1
0
        public async Task InitializeAsync(long initialHeight, byte historyDepth)
        {
            List <Block> lastBlocks = null;
            await _dbContextFactory.ExecuteAsync(async (DatabaseContext context) =>
            {
                lastBlocks = await context.Blocks
                             .Where(x => x.Status == BlockStatus.Valid)
                             .OrderByDescending(x => x.Height)
                             .Take(historyDepth)
                             .ToListAsync();
            });

            var tipBlock = lastBlocks.FirstOrDefault();

            if (tipBlock == null)
            {
                // TODO: no blocks in database we need to initialize from blockchain
            }

            _tipHeight = tipBlock.Height;
            _tipHash   = tipBlock.Id;
            _history   = lastBlocks.Select(x => x.Id).Reverse().ToList();
        }