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ascnet/AscNet.GameServer/Packet.cs

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using System.Reflection;
using AscNet.Logging;
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using MessagePack;
namespace AscNet.GameServer
{
#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
[MessagePackObject(false)]
public class Packet
{
[Key(0)]
public int No;
[Key(1)]
public ContentType Type;
[Key(2)]
public byte[] Content;
public enum ContentType
{
Request,
Response,
Push,
Exception
}
[MessagePackObject(false)]
public class Request
{
[Key(0)]
public int Id;
[Key(1)]
public string Name;
[Key(2)]
public byte[] Content;
}
[MessagePackObject(false)]
public class Response
{
[Key(0)]
public int Id;
[Key(1)]
public string Name;
[Key(2)]
public byte[] Content;
}
[MessagePackObject(false)]
public class Push
{
[Key(0)]
public string Name;
[Key(1)]
public byte[] Content;
}
[MessagePackObject(false)]
public class Exception
{
[Key(0)]
public int Id;
[Key(1)]
public int Code;
[Key(2)]
public string Message;
}
}
#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
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[AttributeUsage(AttributeTargets.Method)]
public class RequestPacketHandler : Attribute
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{
public string Name { get; }
public RequestPacketHandler(string name)
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{
Name = name;
}
}
public delegate void RequestPacketHandlerDelegate(Session session, Packet.Request packet);
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public static class PacketFactory
{
public static readonly Dictionary<string, RequestPacketHandlerDelegate> ReqHandlers = new();
// TODO: Configure based on session?
static readonly Logger log = new(typeof(PacketFactory), LogLevel.DEBUG, LogLevel.DEBUG);
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public static void LoadPacketHandlers()
{
log.LogLevelColor[LogLevel.INFO] = ConsoleColor.White;
LoadRequestPacketHandlers();
}
private static void LoadRequestPacketHandlers()
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{
log.Info("Loading Packet Handlers...");
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IEnumerable<Type> classes = from t in Assembly.GetExecutingAssembly().GetTypes()
select t;
foreach (var method in classes.SelectMany(t => t.GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic)))
{
var attr = method.GetCustomAttribute<RequestPacketHandler>(false);
if (attr == null || ReqHandlers.ContainsKey(attr.Name))
continue;
ReqHandlers.Add(attr.Name, (RequestPacketHandlerDelegate)Delegate.CreateDelegate(typeof(RequestPacketHandlerDelegate), method));
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#if DEBUG
log.Info($"Loaded {method.Name}");
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#endif
}
log.Info("Finished Loading Packet Handlers");
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}
public static RequestPacketHandlerDelegate? GetRequestPacketHandler(string name)
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{
ReqHandlers.TryGetValue(name, out RequestPacketHandlerDelegate? handler);
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return handler;
}
}
}