public JsonResult Get(int height = 0)
{
//TODO: Update this to split get Tx's from Split BC cache
var sizeBlock = 1000;
var startHeight = height;
var endHeight = startHeight + 100;
if (startHeight < 1)
{
startHeight = 1;
}
//todo, we don't have to query the chain height every time this is requested
var chainHeight = RpcHelper.Request <GetHeightResp>("getheight").Height;
if (chainHeight == 0)
{
chainHeight = endHeight + 100;
}
if (endHeight > chainHeight)
{
endHeight = chainHeight;
}
List <int> dbSegments = new List <int>();
var segmentStart = Convert.ToInt32(Math.Floor((double)(startHeight / sizeBlock) * sizeBlock)) + 1;
dbSegments.Add(segmentStart);
if (startHeight + 100 > segmentStart + sizeBlock - 1)
{
dbSegments.Add(segmentStart + sizeBlock);
}
try
{
//TODO:... if we find a problem - ie: there are ANY tx's that don't return at least one Tx poer height, then we need to re-cache the DB file we're working with for this height...
//we need to ensure that there is at least one Tx per block
//should this be in a seperate "validation background job that's checking completed files - maybe to run once per day?
List <LightTx> transactions = new List <LightTx>();
foreach (var start in dbSegments)
{
var end = start + sizeBlock - 1;
using (var db = new LiteDatabase(string.Concat(AppContext.BaseDirectory, @"App_Data\", "transactions_", start, "-", end, ".db")))
{
var cachedtxs = db.GetCollection <CachedTx>("cached_txs");
var txs = cachedtxs.Find(x => x.height >= startHeight && x.height <= endHeight).Distinct().ToList();
transactions.AddRange(TransactionHelpers.MapTxs(txs));
}
}
return(new JsonResult(JsonConvert.SerializeObject(transactions)));
}
catch (Exception ex)
{
//todo: log and return client handlable exception
}
return(new JsonResult(""));
}
