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December 30, 2017 21:49
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/* | |
Copyright (c) 2017 Paul Georgiou | |
Permission is hereby granted, free of charge, to any person obtaining a copy | |
of this software and associated documentation files (the "Software"), to deal | |
in the Software without restriction, including without limitation the rights | |
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
copies of the Software, and to permit persons to whom the Software is | |
furnished to do so, subject to the following conditions: | |
The above copyright notice and this permission notice shall be included in all | |
copies or substantial portions of the Software. | |
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
SOFTWARE. | |
*/ | |
using System; | |
using System.Collections.Generic; | |
using System.Linq; | |
using System.IO; | |
using System.Text; | |
using System.Threading; | |
using NBitcoin; | |
using NBitcoin.RPC; | |
using Newtonsoft.Json; | |
namespace SegwitStats | |
{ | |
struct Datapoint | |
{ | |
public int Height; | |
public int Size; | |
public int Weight; | |
public int OptimizedSize; | |
public int OptimizedWeight; | |
} | |
class Program | |
{ | |
const string RpcCredentials = "user:pass"; | |
const int TotalCount = 4032; | |
const int Period = 144; | |
private string fileName; | |
private Block ConvertToSegwit(Block block) | |
{ | |
var push20bytes = Op.GetPushOp(Enumerable.Repeat((byte)0, 20).ToArray()); | |
var push32bytes = Op.GetPushOp(Enumerable.Repeat((byte)0, 32).ToArray()); | |
var result = block.Clone(); | |
foreach (var tx in result.Transactions) | |
{ | |
if (!tx.IsCoinBase) | |
{ | |
foreach (var input in tx.Inputs) | |
{ | |
if (input.WitScript.PushCount == 0) | |
{ | |
input.WitScript = new WitScript(new Script(input.ScriptSig.ToOps())); | |
} | |
input.ScriptSig = Script.Empty; | |
} | |
} | |
foreach (var output in tx.Outputs) | |
{ | |
var template = output.ScriptPubKey.FindTemplate(); | |
if (template != null) switch (template.Type) | |
{ | |
case TxOutType.TX_PUBKEYHASH: | |
output.ScriptPubKey = new Script(OpcodeType.OP_0, push20bytes); | |
break; | |
case TxOutType.TX_SCRIPTHASH: | |
output.ScriptPubKey = new Script(OpcodeType.OP_0, push32bytes); | |
break; | |
default: | |
break; | |
} | |
} | |
} | |
return result; | |
} | |
private Block RemoveWitnesses(Block block) | |
{ | |
var result = block.Clone(); | |
result.Transactions.ForEach(tx => tx.Inputs.ForEach(i => { i.WitScript = WitScript.Empty; })); | |
return result; | |
} | |
private int Weight(int size, int baseSize) => size + 3 * baseSize; | |
private void WriteToFile(Dictionary<int, Datapoint> stats) | |
{ | |
var result = new Dictionary<string, List<int[]>>(); | |
var data = stats.Values.ToList(); | |
data.Sort(new Comparison<Datapoint>((l, r) => l.Height.CompareTo(r.Height))); | |
var output = data.Select(d => new int[] { d.Height, d.Size, d.Weight, d.OptimizedSize, d.OptimizedWeight }).ToList(); | |
result.Add("last", new List<int[]>(Period)); | |
for (int i = TotalCount - Period; i < TotalCount; i++) | |
{ | |
result["last"].Add(output[i]); | |
} | |
result.Add("all", new List<int[]>(TotalCount / Period)); | |
for (int i = 0; i < TotalCount; i += Period) | |
{ | |
var sum = new int[] { output[i][0], 0, 0, 0, 0 }; | |
for (int j = 0; j < Period; j++) | |
{ | |
for (int k = 1; k < 5; k++) | |
{ | |
sum[k] += output[i + j][k]; | |
} | |
} | |
for (int k = 1; k < 5; k++) | |
{ | |
sum[k] /= Period; | |
} | |
result["all"].Add(sum); | |
} | |
for (int i = 0; i < 10; i++) | |
{ | |
try | |
{ | |
File.WriteAllText(fileName, JsonConvert.SerializeObject(result)); | |
break; | |
} | |
catch (Exception) | |
{ | |
Thread.Sleep(100); | |
} | |
} | |
} | |
private void Run() | |
{ | |
var rpc = new RPCClient(RPCCredentialString.Parse(RpcCredentials), Network.Main); | |
var blockStats = new Dictionary<int, Datapoint>(); | |
int lastHeight = 0; | |
while (true) | |
{ | |
try | |
{ | |
int height = rpc.GetBlockCount(); | |
if (height > lastHeight) | |
{ | |
int count = height - lastHeight; | |
count = count > TotalCount ? TotalCount : count + 6; | |
Console.WriteLine("Computing {0} blocks...", count); | |
for (int i = 0; i < count; i++) | |
{ | |
Console.Write("{0,5}", i); | |
int curHeight = height - i; | |
var block = rpc.GetBlock(curHeight); | |
int size, weight, osize, oweight; | |
size = block.GetSerializedSize(); | |
weight = Weight(size, RemoveWitnesses(block).GetSerializedSize()); | |
block = ConvertToSegwit(block); | |
osize = block.GetSerializedSize(); | |
oweight = Weight(size, RemoveWitnesses(block).GetSerializedSize()); | |
blockStats[curHeight] = new Datapoint() { Height = curHeight, Size = size, Weight = weight, OptimizedSize = osize, OptimizedWeight = oweight }; | |
} | |
var keys = blockStats.Keys.ToArray(); | |
foreach (int i in keys) | |
{ | |
if (i > height || i <= height - TotalCount) | |
blockStats.Remove(i); | |
} | |
WriteToFile(blockStats); | |
lastHeight = height; | |
Console.WriteLine(); | |
Console.WriteLine("...done."); | |
} | |
else | |
{ | |
Thread.Sleep(1000); | |
} | |
} | |
catch (Exception ex) | |
{ | |
Console.WriteLine(ex.Message); | |
Console.WriteLine(ex.StackTrace); | |
Thread.Sleep(1000); | |
} | |
} | |
} | |
static void Main(string[] args) | |
{ | |
var p = new Program(); | |
if (args.Length > 0) | |
p.fileName = args[0]; | |
else | |
p.fileName = "stats.json"; | |
p.Run(); | |
} | |
} | |
} |
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