/// <inheritdoc />
        public override async Task <bool> OnExecute()
        {
            if (Runner.Get <BlockStore>().Queue.Count() >= config.MaxItemsInQueue)
            {
                return(false);
            }


            if (TryDequeue(out SyncBlockOperation item))
            {
                watch.Restart();

                try
                {
                    if (item.BlockInfo != null)
                    {
                        SyncBlockTransactionsOperation block = syncOperations.SyncBlock(syncConnection, item.BlockInfo);

                        int inputs  = block.Transactions.SelectMany(s => s.Inputs).Count();
                        int outputs = block.Transactions.SelectMany(s => s.Outputs).Count();

                        Runner.Get <BlockStore>().Enqueue(block);

                        log.LogDebug($"Seconds = {watch.Elapsed.TotalSeconds} - BlockIndex = {block.BlockInfo.Height} - Transactions {block.Transactions.Count()} - Inputs {inputs} - Outputs {outputs} - ({inputs + outputs})");
                    }

                    if (item.PoolTransactions != null)
                    {
                        SyncBlockTransactionsOperation pool = syncOperations.SyncPool(syncConnection, item.PoolTransactions);

                        int inputs  = pool.Transactions.SelectMany(s => s.Inputs).Count();
                        int outputs = pool.Transactions.SelectMany(s => s.Outputs).Count();

                        Runner.Get <BlockStore>().Enqueue(pool);

                        log.LogDebug($"Seconds = {watch.Elapsed.TotalSeconds} - Pool = Sync - Transactions {pool.Transactions.Count()} - Inputs {inputs} - Outputs {outputs} - ({inputs + outputs})");
                    }
                }
                catch (BitcoinClientException bce)
                {
                    if (bce.ErrorCode == -5)
                    {
                        if (bce.ErrorMessage == "No information available about transaction")
                        {
                            throw new SyncRestartException(string.Empty, bce);
                        }
                    }

                    throw;
                }

                watch.Stop();

                return(true);
            }

            return(await Task.FromResult(false));
        }
        /// <inheritdoc />
        public override async Task <bool> OnExecute()
        {
            if (!config.SyncMemoryPool)
            {
                Abort = true;
                return(true);
            }

            if (Runner.GlobalState.Blocked)
            {
                return(false);
            }

            if (Runner.GlobalState.ChainTipHeight == 0 ||
                Runner.GlobalState.StoreTip == null ||
                Runner.GlobalState.IndexModeCompleted == false ||
                Runner.GlobalState.IbdMode())
            {
                // Don't sync mempool until api is at tip
                return(false);
            }

            if (initialized == false)
            {
                initialized = true;

                // read build mempool memory view
                syncOperations.InitializeMmpool();
            }

            watch.Restart();

            SyncPoolTransactions pool = syncOperations.FindPoolTransactions(syncConnection);

            if (!pool.Transactions.Any())
            {
                return(false);
            }

            SyncBlockTransactionsOperation poolTrx = syncOperations.SyncPool(syncConnection, pool);

            storageOperations.InsertMempoolTransactions(poolTrx);

            watch.Stop();

            log.LogInformation($"Mempool - New Transactions = {pool.Transactions.Count}, Seconds = {watch.Elapsed.TotalSeconds}");

            return(await Task.FromResult(false));
        }