private string BuildRpcInfo()
{
string info = "";
foreach (var kv in rpcProcessor.UrlPath2Method)
{
string urlPath = kv.Key;
var m = kv.Value;
if (m.DocEnabled == false)
{
continue;
}
string returnType = m.Method.ReturnType.ToString();
var args = "";
ParameterInfo[] pinfos = m.Method.GetParameters();
for (int i = 0; i < pinfos.Length; i++)
{
ParameterInfo pinfo = pinfos[i];
args += pinfo.ToString();
if (i < pinfos.Length - 1)
{
args += ", ";
}
}
var link = PathKit.Join(rpcProcessor.UrlPrefix, urlPath);
info += string.Format(RpcMethodTemplate, link, returnType, m.Method.Name, args);
}
return(string.Format(RpcInfoTemplate, rpcProcessor.UrlPrefix, RpcStyleTemplate, info));
}
public void Mount(string urlPrefix, object service, bool docEnabled = true)
{
List <Type> types = new List <Type>();
types.Add(service.GetType());
foreach (Type type in service.GetType().GetInterfaces())
{
types.Add(type);
}
foreach (Type type in types)
{
foreach (MethodInfo info in type.GetMethods())
{
if (info.DeclaringType != type || !info.IsPublic)
{
continue;
}
string urlPath = PathKit.Join(urlPrefix, info.Name);
bool exclude = false;
string httpMethod = null;
foreach (Attribute attr in Attribute.GetCustomAttributes(info))
{
if (attr.GetType() == typeof(RequestMapping))
{
RequestMapping r = (RequestMapping)attr;
if (r.Path != null)
{
urlPath = PathKit.Join(urlPrefix, r.Path);
}
if (r.Exclude)
{
exclude = true;
}
if (r.Method != null)
{
httpMethod = r.Method;
}
break;
}
}
if (exclude)
{
continue;
}
ParameterInfo[] paramInfo = info.GetParameters();
Type[] paramTypes = new Type[paramInfo.Length];
for (int i = 0; i < paramTypes.Length; i++)
{
paramTypes[i] = paramInfo[i].ParameterType;
}
MethodInstance instance = new MethodInstance(info, service);
instance.HttpMethod = httpMethod;
instance.DocEnabled = docEnabled;
UrlPath2Method[urlPath] = instance;
}
}
}
public async Task <T> InvokeAsync <T>(string url, object[] args, int timeoutMillis = 10000)
{
Message msg = new Message();
msg.Url = PathKit.Join(UrlPrefix, url);
msg.Body = args;
return(await InvokeAsync <T>(msg, timeoutMillis));
}
public void MountDoc()
{
if (!DocEnabled)
{
return;
}
string urlPath = PathKit.Join(DocUrlPrefix, "/");
if (UrlPath2Method.ContainsKey(urlPath))
{
return;
}
this.Mount(DocUrlPrefix, new RpcInfo(this), false);
}
public List <UrlEntry> UrlEntryList(string mq)
{
List <UrlEntry> res = new List <UrlEntry>();
foreach (var kv in UrlPath2Method)
{
string urlPath = kv.Key;
var e = new UrlEntry
{
Url = PathKit.Join(UrlPrefix, urlPath),
Mq = mq
};
res.Add(e);
}
return(res);
}
public T CreateProxy <T>(string urlPrefix)
{
urlPrefix = PathKit.Join(this.UrlPrefix, urlPrefix);
return(new RpcProxy <T>(this, urlPrefix).Create());
}
public override IMessage Invoke(IMessage msg)
{
var methodCall = (IMethodCallMessage)msg;
var method = (MethodInfo)methodCall.MethodBase;
if (method.DeclaringType.FullName.Equals("System.IDisposable"))
{
return(new ReturnMessage(null, null, 0, methodCall.LogicalCallContext, methodCall));
}
if (method.DeclaringType.Name.Equals("Object"))
{
var result = method.Invoke(this, methodCall.Args);
return(new ReturnMessage(result, null, 0, methodCall.LogicalCallContext, methodCall));
}
try
{
string methodName = methodCall.MethodName;
object[] args = methodCall.Args;
Message req = new Message();
req.Url = PathKit.Join(this.urlPrefix, methodName);
req.Body = args;
Type returnType = method.ReturnType;
//Simple methods
if (!typeof(Task).IsAssignableFrom(returnType))
{
dynamic res = Request(returnType, req);
if (res != null && res is Exception)
{
return(new ReturnMessage(res as Exception, methodCall));
}
return(new ReturnMessage(res, null, 0, methodCall.LogicalCallContext, methodCall));
}
//Task returned method
Type realType = typeof(void);
if (returnType.GenericTypeArguments.Length >= 1)
{
realType = returnType.GenericTypeArguments[0];
}
Task task = null;
if (realType == typeof(void))
{
task = Task.Run(() =>
{
Request(realType, req);
});
}
else
{
MethodInfo invokeMethod = this.GetType().GetRuntimeMethod("Request", new Type[] { typeof(Type), typeof(Message) });
var calledExp = Expression.Call(
Expression.Constant(this),
invokeMethod,
Expression.Constant(realType),
Expression.Constant(req)
);
var castedExp = Expression.Convert(calledExp, realType);
var d = Expression.Lambda(castedExp).Compile();
task = (Task)Activator.CreateInstance(returnType, d);
task.Start();
}
return(new ReturnMessage(task, null, 0, methodCall.LogicalCallContext, methodCall));
}
catch (Exception e)
{
if (e is TargetInvocationException && e.InnerException != null)
{
return(new ReturnMessage(e.InnerException, msg as IMethodCallMessage));
}
return(new ReturnMessage(e, msg as IMethodCallMessage));
}
}
public void Start()
{
if (Mq == null)
{
throw new MissingFieldException("missing mq field");
}
if (Channel == null)
{
Channel = Mq;
}
processor.MountDoc();
MqClient client = new MqClient(MqServerAddress);
if (AuthEnabled)
{
client.AuthEnabled = AuthEnabled;
client.ApiKey = ApiKey;
client.SecretKey = SecretKey;
}
client.OnOpen += async(cli) =>
{
Message msg = new Message();
msg.Headers[Protocol.CMD] = Protocol.CREATE;
msg.Headers[Protocol.MQ] = Mq;
msg.Headers[Protocol.MQ_TYPE] = MqType;
msg.Headers[Protocol.CHANNEL] = Channel;
var res = await client.InvokeAsync(msg);
logger.Info(JsonKit.SerializeObject(res));
msg = new Message();
msg.Headers[Protocol.CMD] = Protocol.SUB;
msg.Headers[Protocol.MQ] = Mq;
msg.Headers[Protocol.CHANNEL] = Channel;
res = await client.InvokeAsync(msg);
logger.Info(JsonKit.SerializeObject(res));
msg = new Message();
msg.Headers[Protocol.CMD] = Protocol.BIND;
msg.Headers[Protocol.MQ] = Mq;
msg.Body = processor.UrlEntryList(Mq);
res = await client.InvokeAsync(msg);
logger.Info(JsonKit.SerializeObject(res));
};
client.AddMqHandler(Mq, Channel, async(request) =>
{
string prefix = processor.UrlPrefix;
string url = request.Url;
if (url != null && url.StartsWith(prefix))
{
url = url.Substring(prefix.Length);
request.Url = PathKit.Join(url);
}
string id = (string)request.Headers[Protocol.ID];
string source = (string)request.Headers[Protocol.SOURCE];
Message response = new Message();
try
{
await processor.ProcessAsync(request, response);
}
catch (Exception e)
{
while (e.InnerException != null)
{
e = e.InnerException;
}
response.Status = 500;
response.Headers["content-type"] = "text/plain; charset=utf8;";
response.Body = e.Message;
}
response.Headers[Protocol.CMD] = Protocol.ROUTE;
response.Headers[Protocol.ID] = id;
response.Headers[Protocol.TARGET] = source;
await client.SendAsync(response);
});
client.ConnectAsync().Wait();
}
