public void SearchIPv4PrefixMap(IPv4PrefixMap map)
{
int threadCount = Math.Max(Environment.ProcessorCount - 1, 2);
int searchesPerThread = settings.Value.SearchCount / threadCount;
//TODO: Convert to PLINQ expression?
var sw = Stopwatch.StartNew();
var batches = Enumerable.Range(1, threadCount)
.Select(id => Task.Run(() => map.FindNetworks(id, GenerateRandomIPAddresses(searchesPerThread)).ToList()))
.ToArray();
Task.WaitAll(batches);
sw.Stop();
long searchTime = sw.ElapsedMilliseconds;
var totalResultCount = batches.Select(x => x.Result.Count).Sum();
var results = batches.SelectMany(x => x.Result.Take(5));
Console.WriteLine("Sample Search Results");
foreach (var x in results)
{
string block = $"{x.Prefix} ({(x.Prefix.HasFlag ? "Azure" : "Amazon")})";
string message = $" * [{x.Thread}] ip: {IPv4.ConvertToString(x.Address),-17} net: {block,-27} miss: {x.Counter,-5}";
Console.WriteLine(message);
}
Console.WriteLine();
Console.WriteLine($"Found {totalResultCount} matching addresses in {map.Count} distinct prefixes ({searchTime} ms)");
}
public async Task <IPv4PrefixMap> RetrieveIPv4PrefixMap()
{
IPv4PrefixMap value;
var networkMapPath = settings.Value.NetworkMapPath;
var sw = Stopwatch.StartNew();
if (File.Exists(networkMapPath) && (DateTime.Now - File.GetLastWriteTime(networkMapPath)).TotalDays < 7)
{
value = await IPv4PrefixMap.ReadFile(networkMapPath);
Console.WriteLine($" - Prefix map deserialization completed ({sw.ElapsedMilliseconds} ms)");
}
else
{
//TODO: Convert to PLINQ expression?
var awsRangeTask = Task.Run(() => services.GetRequiredService <IAwsRangeClient>().GetAwsIPRange());
var azureRangeTask = Task.Run(() => services.GetRequiredService <IAzureRangeClient>().GetAzureIPRange());
Task.WaitAll(new Task[] { awsRangeTask, azureRangeTask });
Console.WriteLine($" - Downloading IP Ranges completed ({sw.ElapsedMilliseconds} ms)");
sw.Restart();
var awsPrefixes = awsRangeTask.Result.IPv4Prefixes.Select(x => x.Prefix);
var azurePrefixes = azureRangeTask.Result.Services.SelectMany(x => x.Value.AddressPrefixes.Select(IPv4Prefix.SetMaskFlag));
var prefixes = IPv4Prefix.Consolidate(awsPrefixes.Union(azurePrefixes)).ToList();
value = new IPv4PrefixMap(prefixes);
Console.WriteLine($" - Constructing prefix map completed ({sw.ElapsedMilliseconds} ms)");
sw.Restart();
await value.WriteFile(networkMapPath);
Console.WriteLine($" - Prefix map serialization completed ({sw.ElapsedMilliseconds} ms)");
}
return(value);
}
