private async Task UpdatePeersAsync(xServerPeers xServerPeerList)
{
foreach (var peer in xServerPeerList.GetPeers())
{
string xServerURL = Utils.GetServerUrl(peer.NetworkProtocol, peer.NetworkAddress, peer.NetworkPort);
var client = new RestClient(xServerURL);
var pingRequest = new RestRequest("/ping/", Method.GET);
var pingResponseTime = Stopwatch.StartNew();
var pingResult = await client.ExecuteAsync <PingResult>(pingRequest).ConfigureAwait(false);
pingResponseTime.Stop();
if (pingResult.StatusCode == HttpStatusCode.OK)
{
var pingData = pingResult.Data;
peer.Version = pingData.Version;
peer.ResponseTime = pingResponseTime.ElapsedMilliseconds;
peer.Tier = pingData.Tier;
SyncPeerToPeersList(xServerPeerList, peer);
}
else
{
SyncPeerToPeersList(xServerPeerList, peer, removePeer: true);
}
}
}
private void SyncPeerToPeersList(xServerPeers xServerPeerList, xServerPeer peer, bool seedCheck = false, bool removePeer = false)
{
var peersList = xServerPeerList.GetPeers();
int peerIndex = peersList.FindIndex(p => p.NetworkAddress == peer.NetworkAddress);
if (removePeer)
{
peersList.Remove(peer);
}
else if (seedCheck)
{
if (peerIndex == -1)
{
peersList.Add(peer);
}
}
else
{
if (peerIndex >= 0)
{
peersList[peerIndex] = peer;
}
else
{
peersList.Add(peer);
}
}
lock (this.xServerPeersLock)
{
xServerPeerList.ReplacePeers(peersList);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="xServerFeature"/> class with the xServers.
/// </summary>
/// <param name="loggerFactory">The logger factory.</param>
/// <param name="dataFolders">The data folders of the system.</param>
/// <param name="asyncProvider">The async loop factory.</param>
/// <param name="nodeLifetime">The managment of the node process.</param>
/// <param name="network">The network managment.</param>
public xServerManager(
ILoggerFactory loggerFactory,
DataFolder dataFolders,
IAsyncProvider asyncProvider,
INodeLifetime nodeLifetime,
xServerSettings xServerSettings,
Network network)
{
Guard.NotNull(loggerFactory, nameof(loggerFactory));
Guard.NotNull(dataFolders, nameof(dataFolders));
Guard.NotNull(asyncProvider, nameof(asyncProvider));
Guard.NotNull(nodeLifetime, nameof(nodeLifetime));
Guard.NotNull(xServerSettings, nameof(xServerSettings));
this.logger = loggerFactory.CreateLogger(this.GetType().FullName);
this.dataFolders = dataFolders;
this.asyncProvider = asyncProvider;
this.nodeLifetime = nodeLifetime;
this.xServerSettings = xServerSettings;
this.network = network;
string path = Path.Combine(this.dataFolders.xServerAppsPath, xServerPeersFileName);
this.xServerPeerList = new xServerPeers(path);
this.xServerPeersLock = new object();
}
private async Task XServerDiscoveryAsync(xServerPeers xServerPeerList)
{
var seedList = new ConcurrentBag <NetworkXServer>();
int topResult = 10;
await this.xServerSettings.RetrieveNodes().ForEachAsync(10, this.nodeLifetime.ApplicationStopping, async(peer, cancellation) =>
{
if (this.nodeLifetime.ApplicationStopping.IsCancellationRequested)
{
return;
}
string xServerURL = Utils.GetServerUrl(peer.NetworkProtocol, peer.NetworkAddress, peer.NetworkPort);
this.logger.LogDebug($"Attempting connection to {xServerURL}.");
var client = new RestClient(xServerURL);
var topXServersRequest = new RestRequest("/gettop/", Method.GET);
topXServersRequest.AddParameter("top", topResult);
var topXServerResult = await client.ExecuteAsync <TopResult>(topXServersRequest, cancellation).ConfigureAwait(false);
if (topXServerResult.StatusCode == HttpStatusCode.OK)
{
seedList.Add(peer);
if (topXServerResult.Data?.XServers?.Count > 0)
{
var xServers = topXServerResult.Data.XServers;
foreach (var xServer in xServers)
{
xServerURL = Utils.GetServerUrl(xServer.NetworkProtocol, xServer.NetworkAddress, xServer.NetworkPort);
client = new RestClient(xServerURL);
var pingRequest = new RestRequest("/ping/", Method.GET);
var pingResponseTime = Stopwatch.StartNew();
var pingResult = await client.ExecuteAsync <PingResult>(pingRequest, cancellation).ConfigureAwait(false);
pingResponseTime.Stop();
if (pingResult.StatusCode == HttpStatusCode.OK)
{
var ping = pingResult.Data;
var newPeer = new xServerPeer()
{
Name = xServer.Name,
NetworkProtocol = xServer.NetworkProtocol,
NetworkAddress = xServer.NetworkAddress,
NetworkPort = xServer.NetworkPort,
Priority = xServer.Priotiry,
Version = ping.Version,
ResponseTime = pingResponseTime.ElapsedMilliseconds,
Tier = ping.Tier
};
SyncPeerToPeersList(xServerPeerList, newPeer);
}
}
}
}
SyncSeedsToPeersList(xServerPeerList, seedList);
}).ConfigureAwait(false);
}
private void SyncSeedsToPeersList(xServerPeers xServerPeerList, ConcurrentBag <NetworkXServer> seedList)
{
foreach (var networkAddress in seedList)
{
var seedPeer = new xServerPeer()
{
Name = "Public Seed",
NetworkProtocol = networkAddress.NetworkProtocol,
NetworkAddress = networkAddress.NetworkAddress,
NetworkPort = networkAddress.NetworkPort,
Priority = -1,
Version = "N/A",
ResponseTime = 99999999,
Tier = (int)TierLevel.Seed
};
SyncPeerToPeersList(xServerPeerList, seedPeer, seedCheck: true);
}
}