private int GetCurrentBlockHeight()
{
P2PWebClient client = new P2PWebClient();
client.RequestTimeout = 10000;
string data = client.DownloadString("http://blockchain.info/q/getblockcount");
return int.Parse(data);
}
private List<Block> GetBlocksAtHeight(int height)
{
List<Block> blocks = new List<Block>();
P2PWebClient client = new P2PWebClient();
client.RequestTimeout = 10000;
var blocksAtHeight = JObject.Parse(client.DownloadString(string.Format("http://blockchain.info/block-height/{0}?format=json", height)));
foreach (var blockData in (JArray)blocksAtHeight["blocks"])
{
Block block = new Block();
block.Id = (string)blockData["hash"];
block.BlockHeight = (int)blockData["height"];
block.Difficulty = (decimal)BitcoinMathHelper.Difficulty((long)blockData["bits"]);
block.PrevBlock = (string)blockData["prev_block"];
block.Timestamp = (int)blockData["time"];
block.IsOrphaned = !(bool)blockData["main_chain"];
var genTx = blockData["tx"][0];
block.GenerationTxHash = (string)genTx["hash"];
var outputs = (JArray)genTx["out"];
foreach (var output in outputs)
{
if ((string)output["addr"] == DonationAddress)
{
var lastOutput = outputs[outputs.Count - 1];
if (outputs.Count > 25 && (decimal)lastOutput["value"] == 0 && (decimal)lastOutput["type"] == -1)
{
block.IsP2Pool = true;
}
break;
}
}
blocks.Add(block);
}
return blocks;
}
public void UpdateStats()
{
try
{
int timestamp = DateTime.UtcNow.ToUnixTime();
int remainder = timestamp % 300;
timestamp -= remainder;
Log(string.Format("Updating stats for timestamp {0}", timestamp));
IEnumerable<string> servers = null;
bool updatedData = false;
P2PWebClient client = new P2PWebClient();
client.RequestTimeout = 3000;
Retry.ExecuteAction(() =>
{
using (P2PoolDb db = new P2PoolDb())
{
var existingUsersCount = (from u in db.Users where u.Timestamp == timestamp select u.Address).Count();
if (existingUsersCount == 0)
{
JObject users = null;
if (servers == null)
{
servers = GetServers();
}
foreach (var server in servers)
{
if (string.IsNullOrWhiteSpace(server))
{
continue;
}
try
{
var baseUrl = new Uri(server.Trim());
users = JObject.Parse(client.DownloadString(new Uri(baseUrl, "/users")));
Log(string.Format(" Stats: Retrived users from {0}", server));
break;
}
catch (Exception ex)
{
Log(" Stats: " + ex.Message);
}
}
if (users == null)
{
return;
}
Dictionary<string, decimal> addresses = new Dictionary<string, decimal>();
foreach (var userEntry in users.Properties())
{
string address = P2PHelper.ExtractAddress(userEntry.Name) ?? "Unknown";
if (address != null)
{
decimal portion = 0;
if (addresses.ContainsKey(address))
{
portion += addresses[address];
}
portion += (decimal)userEntry.Value;
addresses[address] = portion;
}
}
foreach (var item in addresses)
{
User user = new User()
{
Timestamp = timestamp,
Address = item.Key,
Portion = item.Value
};
db.Users.Add(user);
}
db.SaveChanges();
updatedData = true;
Log(string.Format(" Stats: Added {0} users", addresses.Count));
}
}
});
Retry.ExecuteAction(() =>
{
using (P2PoolDb db = new P2PoolDb())
{
Stat entry = db.Stats.Find(timestamp);
if (entry == null)
{
decimal rate = -1;
if (servers == null)
{
servers = GetServers();
}
foreach (var server in servers)
{
if (string.IsNullOrWhiteSpace(server))
{
continue;
}
try
{
var baseUrl = new Uri(server.Trim());
rate = decimal.Parse(client.DownloadString(new Uri(baseUrl, "/rate"))) / 1000000000m;
Log(string.Format(" Stats: Retrived rate from {0}", server));
break;
}
catch (Exception ex)
{
Log(" Stats: " + ex.Message);
}
}
if (rate == -1)
{
return;
}
int userCount;
userCount = db.Database.SqlQuery<int>("select count (distinct address) from p2pool_Users where timestamp >= @start and timestamp <= @end", new SqlParameter("start", timestamp - 86400), new SqlParameter("end", timestamp)).First();
entry = new Stat
{
Timestamp = timestamp,
Rate = rate,
Users = userCount
};
db.Stats.Add(entry);
db.SaveChanges();
updatedData = true;
Log(string.Format(" Stats: Saved new rate: {0}", rate));
}
}
});
if (updatedData)
{
Retry.ExecuteAction(() =>
{
using (P2PoolDb db = new P2PoolDb())
{
CurrentPayouts entry = db.CurrentPayouts.Find(1);
if (entry != null)
{
JObject payouts = null;
if (servers == null)
{
servers = GetServers();
}
foreach (var server in servers)
{
if (string.IsNullOrWhiteSpace(server))
{
continue;
}
try
{
var baseUrl = new Uri(server.Trim());
payouts = JObject.Parse(client.DownloadString(new Uri(baseUrl, "/current_payouts")));
Log(string.Format(" Stats: Retrived payouts from {0}", server));
break;
}
catch (Exception ex)
{
Log(" Stats: " + ex.Message);
}
}
if (payouts == null)
{
return;
}
entry.Payouts = payouts.ToString();
entry.Updated = timestamp;
db.SaveChanges();
Log(" Stats: Saved updated payouts");
}
}
});
//cleanup old user stats
Retry.ExecuteAction(() =>
{
using (P2PoolDb db = new P2PoolDb())
{
// delete all the specific user stats older than 3 days
var result = db.Database.ExecuteSqlCommand("delete from p2pool_Users where [Timestamp] < @cutoff", new SqlParameter("cutoff", timestamp - 259200));
Log(string.Format(" Stats: Deleted old user rows", result));
}
});
}
}
catch (Exception ex)
{
Log(" Stats: UpdateStats Exception: " + ex.Message);
}
}
public List<Block> FindOrphans(HashSet<string> knownTxHashes)
{
List<Block> newBlocks = new List<Block>();
P2PWebClient client = new P2PWebClient();
client.RequestTimeout = 30000;
var addressData = JObject.Parse(client.DownloadString("http://blockchain.info/address/1Kz5QaUPDtKrj5SqW5tFkn7WZh8LmQaQi4?format=json&filter=0"));
foreach (var tx in (JArray)addressData["txs"])
{
try
{
if (tx["inputs"] != null && tx["inputs"].Type == JTokenType.Array && ((JArray)tx["inputs"]).Count == 1 && ((JArray)tx["inputs"])[0]["prev_out"] == null)
{
string generationTxHash = (string)tx["hash"];
if (!knownTxHashes.Contains(generationTxHash))
{
int blockHeight;
if (tx["block_height"] != null)
{
blockHeight = (int)tx["block_height"];
var blocksAtHeight = JObject.Parse(client.DownloadString(string.Format("http://blockchain.info/block-height/{0}?format=json", blockHeight)));
foreach (var blockData in (JArray)blocksAtHeight["blocks"])
{
try
{
if (blockData["tx"] != null && blockData["tx"][0] != null && blockData["tx"][0]["hash"] != null && (string)blockData["tx"][0]["hash"] == generationTxHash
&& blockData["tx"][0]["out"] is JArray && ((JArray)blockData["tx"][0]["out"]).Count > 25)
{
Block block = new Block();
block.Id = (string)blockData["hash"];
block.BlockHeight = (int)blockData["height"];
block.Difficulty = (decimal)BitcoinMathHelper.Difficulty((long)blockData["bits"]);
block.GenerationTxHash = generationTxHash;
block.IsP2Pool = true;
block.PrevBlock = (string)blockData["prev_block"];
block.Timestamp = (int)blockData["time"];
block.IsOrphaned = !(bool)blockData["main_chain"];
newBlocks.Add(block);
break;
}
}
catch
{
//absorb and check next block
}
}
}
else
{
string TxDataHtml = client.DownloadString(string.Format("http://blockchain.info/tx/{0}", generationTxHash));
bool doneParsing = false;
HtmlDocument document = new HtmlDocument();
document.LoadHtml(TxDataHtml);
var tables = document.DocumentNode.SelectNodes("//table");
foreach (var table in tables)
{
var header = table.SelectSingleNode("tr/th");
if (header == null || header.InnerText.ToLower() != "summary")
{
continue;
}
var links = table.SelectNodes(".//a");
foreach (var link in links)
{
var blockUrl = link.GetAttributeValue("href", "");
if (blockUrl.StartsWith("/block-index/"))
{
var blockData = JObject.Parse(client.DownloadString(string.Format("http://blockchain.info{0}?format=json", blockUrl)));
try
{
if (((JArray)blockData["tx"][0]["out"]).Count > 10)
{
Block block = new Block();
block.Id = (string)blockData["hash"];
block.BlockHeight = (int)blockData["height"];
block.Difficulty = (decimal)BitcoinMathHelper.Difficulty((long)blockData["bits"]);
block.GenerationTxHash = generationTxHash;
block.IsP2Pool = true;
block.PrevBlock = (string)blockData["prev_block"];
block.Timestamp = (int)blockData["time"];
block.IsOrphaned = !(bool)blockData["main_chain"];
newBlocks.Add(block);
}
}
catch
{
//absorb
}
doneParsing = true;
break;
}
}
if (doneParsing)
{
break;
}
}
}
}
}
}
catch
{
//absorb and check next tx
}
}
return newBlocks;
}