private static TraceEventType GetTypeForRpcError( RpcError rpcError )
{
if ( 0 < rpcError.ErrorCode || rpcError.ErrorCode == -31 )
{
return TraceEventType.Warning;
}
switch ( rpcError.ErrorCode % 10 )
{
case -2:
case -4:
{
return TraceEventType.Warning;
}
case -1:
case -3:
{
return TraceEventType.Critical;
}
default:
{
return TraceEventType.Error;
}
}
}
public RpcAnswer(Combinator answer)
{
Success = answer.Name != "rpc_error";
if (Success)
Combinator = answer;
else
Error = new RpcError(answer.Get<int>("error_code"), answer.Get<string>("error_message"));
}
public static void Assert(RpcError errorCode)
{
if (errorCode != RpcError.RPC_S_OK)
{
RpcException ex = new RpcException(errorCode);
Log.Error("RpcError.{0} - {1}", errorCode, ex.Message);
throw ex;
}
}
private static int GetIdForRpcError( RpcError rpcError )
{
if ( 0 < rpcError.ErrorCode )
{
return 20000;
}
else
{
return 10000 + ( rpcError.ErrorCode * -1 );
}
}
private static int GetIdForRpcError(RpcError rpcError)
{
if (0 < rpcError.ErrorCode)
{
return(20000);
}
else
{
return(10000 + (rpcError.ErrorCode * -1));
}
}
public RpcError abortCall(uint exceptionCode)
{
if (AsyncContextStatus.InProgress != status)
{
throw new InvalidOperationException(String.Format("Invalid operation, the current state = {0}.", status));
}
RpcError result = RpcApi.RpcAsyncAbortCall(asyncState, exceptionCode);
status = AsyncContextStatus.Aborted;
return(result);
}
private static bool ServerUseProtseqEp(RpcProtseq protocol, int maxCalls, string endpoint)
{
RpcError errorCode = RpcServerApi.RpcServerUseProtseqEp(protocol.ToString(), maxCalls, endpoint, IntPtr.Zero);
if (errorCode != RpcError.RPC_S_DUPLICATE_ENDPOINT)
{
RpcException.Assert(errorCode);
}
return(errorCode == RpcError.RPC_S_OK);
}
/// <summary>
/// Gets the <see cref="RpcErrorMessage"/> corresponds to the specified <see cref="SocketError"/>.
/// </summary>
/// <param name="socketError">The <see cref="SocketError"/>.</param>
/// <returns>
/// The <see cref="RpcErrorMessage"/> corresponds to the specified <see cref="SocketError"/>.
/// </returns>
public static RpcErrorMessage ToServerRpcError(this SocketError socketError)
{
if (socketError.IsError().GetValueOrDefault())
{
RpcError rpcError = socketError.ToRpcError();
return(new RpcErrorMessage(rpcError, rpcError == RpcError.TransportError ? "Unexpected socket error." : rpcError.DefaultMessageInvariant, new SocketException(( int )socketError).Message));
}
else
{
return(RpcErrorMessage.Success);
}
}
public RpcAnswer(Combinator answer)
{
Success = answer.Name != "rpc_error";
if (Success)
{
Combinator = answer;
}
else
{
Error = new RpcError(answer.Get <int>("error_code"), answer.Get <string>("error_message"));
}
}
private void btnPing_Click(object sender, EventArgs e)
{
IProtocol protocol = new TcpProtocol(tbOtherPeerUrl.Text, tbOtherPeerPort.Text.to_i());
RpcError err = protocol.Ping(dht.Contact);
if (err.HasError)
{
MessageBox.Show("Peer error: " + err.PeerErrorMessage + "\r\n" +
"Protocol error: " + err.ProtocolErrorMessage + "\r\n" +
"Timeout: " + err.TimeoutError, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private static bool ServerUseProtseqEp(RpcProtseq protocol, int maxCalls, String endpoint)
{
Log.Verbose("ServerUseProtseqEp({0})", protocol);
RpcError err = RpcServerUseProtseqEp(protocol.ToString(), maxCalls, endpoint, IntPtr.Zero);
if (err != RpcError.RPC_S_DUPLICATE_ENDPOINT)
{
RpcException.Assert(err);
}
return(err == RpcError.RPC_S_OK);
}
private static bool ServerRegisterAuthInfo(RpcAuthentication auth, string serverPrincName)
{
Log.Verbose("ServerRegisterAuthInfo({0})", auth);
RpcError response = RpcServerRegisterAuthInfo(serverPrincName, (uint)auth, IntPtr.Zero, IntPtr.Zero);
if (response != RpcError.RPC_S_OK)
{
Log.Warning("ServerRegisterAuthInfo - unable to register authentication type {0}", auth);
return(false);
}
return(true);
}
private static void ServerListen(int maxCalls)
{
Log.Verbose("Begin Server Listening");
RpcError result = RpcServerListen(1, maxCalls, 1);
if (result == RpcError.RPC_S_ALREADY_LISTENING)
{
result = RpcError.RPC_S_OK;
}
RpcException.Assert(result);
Log.Verbose("Server Ready");
}
/// <summary>
/// Add a contact if possible, based on the algorithm described
/// in sections 2.2, 2.4 and 4.2
/// </summary>
public void AddContact(Contact contact)
{
Validate.IsFalse<OurNodeCannotBeAContactException>(ourID == contact.ID, "Cannot add ourselves as a contact!");
contact.Touch(); // Update the LastSeen to now.
lock (this)
{
KBucket kbucket = GetKBucket(contact.ID);
if (kbucket.Contains(contact.ID))
{
// Replace the existing contact, updating the network info and LastSeen timestamp.
kbucket.UpdateContactInfo(contact);
}
else if (kbucket.IsBucketFull)
{
if (CanSplit(kbucket))
{
// Split the bucket and try again.
(KBucket k1, KBucket k2) = kbucket.Split();
int idx = GetKBucketIndex(contact.ID);
buckets[idx] = k1;
buckets.Insert(idx + 1, k2);
buckets[idx].Touch();
buckets[idx + 1].Touch();
AddContact(contact);
}
else
{
Contact lastSeenContact = kbucket.Contacts.OrderBy(c => c.LastSeen).First();
RpcError error = lastSeenContact.Protocol.Ping(ourContact);
if (error.HasError)
{
// Null continuation is used because unit tests may not initialize a DHT.
dht?.DelayEviction(lastSeenContact, contact);
}
else
{
// Still can't add the contact, so put it into the pending list.
dht?.AddToPending(contact);
}
}
}
else
{
// Bucket isn't full, so just add the contact.
kbucket.AddContact(contact);
dht?.ContactAddedToBucket(kbucket, contact);
}
}
}
void Client_MqttMsgPublishReceived(object sender, MqttMsgPublishEventArgs e)
{
string topic = e.Topic;
string message = Encoding.UTF8.GetString(e.Message, 0, e.Message.Length);
string[] splitTopic = topic.Split('/');
int rpcActionId = int.Parse(splitTopic[splitTopic.Length - 1]);
Hashtable deserializedObject = JsonSerializer.DeserializeString(message) as Hashtable;
if (topic.StartsWith(RPC_REQUEST_TOPIC))
{
TBRpcRequest rpcRequest = new TBRpcRequest((string)deserializedObject["method"], deserializedObject["params"], rpcActionId);
if (OnRpcRequestTopic != null)
{
OnRpcRequestTopic(this, new RpcEventArgs(rpcRequest));
}
}
else if (topic.StartsWith(RPC_RESPONSE_TOPIC))
{
string error = (string)deserializedObject["error"];
if (error != null)
{
RpcError rpcError = new RpcError(error, rpcActionId);
if (OnRpcError != null)
{
OnRpcError(this, new RpcEventArgs(rpcError));
}
}
else if (OnRpcResponseTopic != null)
{
TBRpcResponse rpcResponse = new TBRpcResponse(rpcActionId);
OnRpcResponseTopic(this, new RpcEventArgs(rpcResponse));
}
}
else if (topic == ATTRIBUTES_TOPIC)
{
}
else if (topic.StartsWith(ATTRIBUTES_TOPIC_RESPONSE))
{
TBAttributesResponse tBAttributesResponse = new TBAttributesResponse(deserializedObject["client"], deserializedObject["shared"], rpcActionId);
if (OnAttributesResponseTopic != null)
{
OnAttributesResponseTopic(this, new RpcEventArgs(tBAttributesResponse));
}
}
}
/// <summary>
/// Put contact with an error into a collection and increment the number of times it has timed out.
/// If it has timed out a certain amount, remove it from the bucket and replace it with the most
/// recent pending contact that are queued for that bucket.
/// </summary>
public void HandleAnyError(RpcError error, Contact contact)
{
if (error.HasError)
{
// For all errors:
int count = AddContactToEvict(contact.ID.Value);
if (count == Constants.EVICTION_LIMIT)
{
ReplaceContact(contact);
}
}
}
// ======= ======= ======= ======= =======
/// <summary>
/// Someone is pinging us. Register the contact and respond.
/// </summary>
public Contact Ping(Contact sender)
{
Validate.IsFalse <SendingQueryToSelfException>(sender.ID == ourContact.ID, "Sender should not be ourself!");
// Not in spec...ping the sender to verify sender.
RpcError err = sender.Protocol.PingBack(ourContact);
if (!err.HasError)
{
SendKeyValuesIfNewContact(sender);
bucketList.AddContact(sender);
}
return(ourContact);
}
/// <summary>
/// Converts an unknown caught exception into a Rpc response
/// </summary>
/// <param name="request">Current Rpc request</param>
/// <param name="ex">Unknown exception</param>
/// <returns>Rpc error response from the exception</returns>
private RpcResponse GetUnknownExceptionReponse(RpcRequest request, Exception ex)
{
this.logger?.LogException(ex, "An unknown error occurred. Returning an Rpc error response");
RpcUnknownException exception = new RpcUnknownException("An internal server error has occurred", ex);
RpcError error = new RpcError(exception, this.serverConfig.Value.ShowServerExceptions);
if (request?.Id == null)
{
return(null);
}
RpcResponse rpcResponse = new RpcResponse(request.Id, error);
return(rpcResponse);
}
private static void ServerStopListening()
{
Log.Verbose("Stop Server Listening");
RpcError result = RpcMgmtStopServerListening(IntPtr.Zero);
if (result != RpcError.RPC_S_OK)
{
Log.Warning("RpcMgmtStopServerListening result = {0}", result);
}
result = RpcMgmtWaitServerListen();
if (result != RpcError.RPC_S_OK)
{
Log.Warning("RpcMgmtWaitServerListen result = {0}", result);
}
}
private void WriteTranslatedError(RpcException ex)
{
RpcError errorCode = (RpcError)ex.ErrorCode;
if (errorCode == RpcError.ServerUnavailable)
{
base.WriteError(new ServerUnavailableException(), ErrorCategory.ReadError, null);
return;
}
if (errorCode != RpcError.EndpointNotRegistered)
{
base.WriteError(new Win32Exception(ex.ErrorCode), ErrorCategory.NotSpecified, null);
return;
}
base.WriteError(new EndPointNotRegisteredException(), ErrorCategory.ReadError, null);
}
public (bool found, List <Contact> contacts, string val) FindValue(ID key)
{
TouchBucketWithKey(key);
string ourVal;
List <Contact> contactsQueried = new List <Contact>();
(bool found, List <Contact> contacts, string val)ret = (false, null, null);
if (originatorStorage.TryGetValue(key, out ourVal))
{
// Sort of odd that we are using the key-value store to find something the key-value that we originate.
ret = (true, null, ourVal);
}
else if (republishStorage.TryGetValue(key, out ourVal))
{
// If we have it from another peer.
ret = (true, null, ourVal);
}
else if (cacheStorage.TryGetValue(key, out ourVal))
{
// If we have it because it was cached.
ret = (true, null, ourVal);
}
else
{
var lookup = router.Lookup(key, router.RpcFindValue);
if (lookup.found)
{
ret = (true, null, lookup.val);
// Find the first close contact (other than the one the value was found by) in which to *cache* the key-value.
var storeTo = lookup.contacts.Where(c => c != lookup.foundBy).OrderBy(c => c.ID ^ key).FirstOrDefault();
if (storeTo != null)
{
int separatingNodes = GetSeparatingNodesCount(ourContact, storeTo);
int expTimeSec = (int)(Constants.EXPIRATION_TIME_SECONDS / Math.Pow(2, separatingNodes));
RpcError error = storeTo.Protocol.Store(node.OurContact, key, lookup.val, true, expTimeSec);
HandleError(error, storeTo);
}
}
}
return(ret);
}
private RpcResponseBase GetUnknownExceptionReponse(RpcRequest request, Exception ex)
{
this.Logger?.LogError("An unknown error occurred. Returning an Rpc error response", ex);
#if DEBUG
string message = ex.Message;
#else
string message = "An internal server error has occurred";
#endif
RpcUnknownException exception = new RpcUnknownException(message);
RpcError error = new RpcError(exception);
if (request?.Id == null)
{
return(null);
}
RpcResponseBase rpcResponse = new RpcErrorResponse(request.Id, error);
return(rpcResponse);
}
/// <summary>
/// Initializes a new instance of the <see cref="RpcMethodInvocationException"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.CallError"/> is used.
/// </param>
/// <param name="methodName">
/// Name of method which is related to this error.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <param name="inner">
/// Exception which caused this error.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="methodName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="methodName"/> is empty or blank.
/// </exception>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcMethodInvocationException(RpcError rpcError, string methodName, string message, string debugInformation, Exception inner)
: base(rpcError ?? RpcError.CallError, message, debugInformation, inner)
{
if (methodName == null)
{
throw new ArgumentNullException(nameof(methodName));
}
if (string.IsNullOrWhiteSpace(methodName))
{
throw new ArgumentException("'methodName' cannot be empty nor blank.", nameof(methodName));
}
Contract.EndContractBlock();
_methodName = methodName;
}
private static String StringBindingCompose(RpcProtseq ProtSeq, String NetworkAddr, String Endpoint,
String Options)
{
IntPtr lpBindingString;
RpcError result = RpcStringBindingCompose(null, ProtSeq.ToString(), NetworkAddr, Endpoint, Options,
out lpBindingString);
RpcException.Assert(result);
try
{
return(Marshal.PtrToStringUni(lpBindingString));
}
finally
{
RpcException.Assert(RpcStringFree(ref lpBindingString));
}
}
public async Task ShouldSerializeErrors()
{
var pipe = new Pipe(new PipeOptions());
using var handler = NewHandler(pipe.Writer);
var value = new RpcError(1, new ErrorMessage(1, "something", "data"));
handler.Send(value);
await handler.WriteAndFlush();
using var reader = new StreamReader(pipe.Reader.AsStream());
var received = await reader.ReadToEndAsync();
const string send =
"Content-Length: 76\r\n\r\n{\"seq\":1,\"type\":\"response\",\"request_seq\":1,\"success\":false,\"message\":\"data\"}";
received.Should().Be(send);
}
protected void OriginatorRepublishElapsed(object sender, ElapsedEventArgs e)
{
DateTime now = DateTime.Now;
originatorStorage.Keys.Where(k => (now - originatorStorage.GetTimeStamp(k)).TotalMilliseconds >= Constants.ORIGINATOR_REPUBLISH_INTERVAL).ForEach(k =>
{
ID key = new ID(k);
// Just use close contacts, don't do a lookup.
var contacts = node.BucketList.GetCloseContacts(key, node.OurContact.ID);
contacts.ForEach(c =>
{
RpcError error = c.Protocol.Store(ourContact, key, originatorStorage.Get(key));
HandleError(error, c);
});
originatorStorage.Touch(k);
});
}
public RpcError completeCall(byte[] value, uint exceptionCode)
{
if (AsyncContextStatus.InProgress != status)
{
throw new InvalidOperationException(String.Format("Invalid operation, the current state = {0}.", status));
}
if (null != value)
{
// write output payload
putOutput(value);
}
var rt = (IntPtr)exceptionCode;
RpcError result = RpcApi.RpcAsyncCompleteCall(asyncState, ref rt);
status = AsyncContextStatus.Completed;
return(result);
}
public async Task ShouldSerializeErrors()
{
var pipe = new Pipe(new PipeOptions());
using var handler = NewHandler(pipe.Writer);
var value = new RpcError(1, new ErrorMessage(1, "something", new object()));
handler.Send(value);
await handler.WriteAndFlush();
using var reader = new StreamReader(pipe.Reader.AsStream());
var received = await reader.ReadToEndAsync();
const string send =
"Content-Length: 75\r\n\r\n{\"jsonrpc\":\"2.0\",\"id\":1,\"error\":{\"code\":1,\"data\":{},\"message\":\"something\"}}";
received.Should().Be(send);
}
private void HandleExeption(Exception ex, RpcCallContext call)
{
if (ex is JsonRpcException)
{
call.Error = RpcError.FromException((JsonRpcException)ex);
}
else
{
if (this.exceptionHandlers.ContainsKey(ex.GetType()))
{
var handler = this.exceptionHandlers[ex.GetType()];
call.Error = handler(ex);
}
else
{
this.logger.LogError(0, ex, ex.Message);
call.Error = RpcError.FromException(new JsonRpcInternalErrorException(ex));
}
}
}
private StartResults TryStartSyncNow()
{
int num = 3;
while (num-- > 0)
{
try
{
return(this.client.StartSyncNow(this.targetServer, this.forceFullSync, this.forceUpdateCookie));
}
catch (RpcException ex)
{
RpcError errorCode = (RpcError)ex.ErrorCode;
if ((errorCode != RpcError.EndpointNotRegistered && errorCode != RpcError.RemoteDidNotExecute) || num == 0)
{
throw;
}
}
}
return(StartResults.ErrorOnStart);
}
public void UnresponsiveNodeTest()
{
TcpSubnetProtocol p1 = new TcpSubnetProtocol(localIP, port, 1);
TcpSubnetProtocol p2 = new TcpSubnetProtocol(localIP, port, 2);
p2.Responds = false;
ID ourID = ID.RandomID;
Contact c1 = new Contact(p1, ourID);
Node n1 = new Node(c1, new VirtualStorage());
Node n2 = new Node(new Contact(p2, ID.RandomID), new VirtualStorage());
server.RegisterProtocol(p1.Subnet, n1);
server.RegisterProtocol(p2.Subnet, n2);
server.Start();
ID testID = ID.RandomID;
string testValue = "Test";
RpcError error = p2.Store(c1, testID, testValue);
Assert.IsTrue(error.TimeoutError, "Expected timeout.");
}
static RpcResult HandleRpcResult(BinaryReader br)
{
EnsureTypeNumber(br, RpcResultTypeNumber);
var reqMsgId = br.ReadInt64();
var innerCode = PeekTypeNumber(br);
switch (innerCode)
{
case RpcError.TypeNumber:
EnsureTypeNumber(br, RpcError.TypeNumber);
return(RpcError.DeserializeTag(br)
.Apply(RpcResultErrorHandler.ToException)
.Apply(exc => RpcResult.OfFail(reqMsgId, exc)));
case GZipPackedTypeNumber:
return(ReadGZipPacked(br).Apply(msgBr => RpcResult.OfSuccess(reqMsgId, msgBr)));
default:
return(RpcResult.OfSuccess(reqMsgId, br));
}
}
/// <summary>
/// Perform a lookup if the bucket containing the key has not been refreshed,
/// otherwise just get the contacts the k closest contacts we know about.
/// </summary>
protected void StoreOnCloserContacts(ID key, string val)
{
DateTime now = DateTime.Now;
KBucket kbucket = node.BucketList.GetKBucket(key);
List <Contact> contacts;
if ((now - kbucket.TimeStamp).TotalMilliseconds < Constants.BUCKET_REFRESH_INTERVAL)
{
// Bucket has been refreshed recently, so don't do a lookup as we have the k closes contacts.
contacts = node.BucketList.GetCloseContacts(key, node.OurContact.ID);
}
else
{
contacts = router.Lookup(key, router.RpcFindNodes).contacts;
}
contacts.ForEach(c =>
{
RpcError error = c.Protocol.Store(node.OurContact, key, val);
HandleError(error, c);
});
}
static TraceEventType GetTypeForRpcError(RpcError rpcError)
{
if (0 < rpcError.ErrorCode || rpcError.ErrorCode == -31)
{
return(TraceEventType.Warning);
}
switch (rpcError.ErrorCode % 10)
{
case -2:
case -4: {
return(TraceEventType.Warning);
}
case -1:
case -3: {
return(TraceEventType.Critical);
}
default: {
return(TraceEventType.Error);
}
}
}
/// <summary>
/// Initialize new sintance with unpacked data.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="message">
/// Exception data from remote MessagePack-RPC server.
/// </param>
/// <exception cref="SerializationException">
/// Cannot deserialize instance from <paramref name="message"/>.
/// </exception>
internal RpcTransportException( RpcError rpcError, MessagePackObject message )
: base(rpcError, message)
{
}
public RpcAnswer(RpcError error)
{
Success = false;
Error = error;
}
/// <summary>
/// Initializes a new instance of the <see cref="RpcMethodInvocationException"/> class with the default error message.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.CallError"/> is used.
/// </param>
/// <param name="methodName">
/// Name of method which is related to this error.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="methodName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="methodName"/> is empty or blank.
/// </exception>
public RpcMethodInvocationException( RpcError rpcError, string methodName ) : this( rpcError, methodName, null, null, null ) { }
/// <summary>
/// Initializes a new instance of the <see cref="RpcProtocolException"/> with unpacked data.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="unpackedException">
/// Exception data from remote MessagePack-RPC server.
/// </param>
/// <exception cref="SerializationException">
/// Cannot deserialize instance from <paramref name="unpackedException"/>.
/// </exception>
internal RpcProtocolException( RpcError rpcError, MessagePackObject unpackedException ) : base( rpcError, unpackedException ) { }
/// <summary>
/// Initialize new sintance with unpacked data.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="unpackedException">
/// Exception data from remote MessagePack-RPC server.
/// </param>
/// <exception cref="SerializationException">
/// Cannot deserialize instance from <paramref name="unpackedException"/>.
/// </exception>
protected internal RpcMethodInvocationException( RpcError rpcError, MessagePackObject unpackedException )
: base(rpcError, unpackedException)
{
MessagePackObjectDictionary.TryGetString( unpackedException, _methodNameKeyUtf8, message => new SerializationException( message ), out this._methodName );
}
/// <summary>
/// Initializes a new instance of the <see cref="RpcMethodInvocationException"/> class with a specified error message.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.CallError"/> is used.
/// </param>
/// <param name="methodName">
/// Name of method which is related to this error.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="methodName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="methodName"/> is empty or blank.
/// </exception>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcMethodInvocationException( RpcError rpcError, string methodName, string message, string debugInformation )
: this( rpcError, methodName, message, debugInformation, null ) { }
/// <summary>
/// Initializes a new instance of the <see cref="RpcTransportException"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.TransportError"/> is used.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <param name="inner">
/// Exception which caused this error.
/// </param>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcTransportException( RpcError rpcError, string message, string debugInformation, Exception inner ) : base( rpcError ?? RpcError.TransportError, message, debugInformation, inner ) { }
/// <summary>
/// Initializes a new instance of the <see cref="RpcProtocolException"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <param name="inner">
/// Exception which caused this error.
/// </param>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcProtocolException( RpcError rpcError, string message, string debugInformation, Exception inner ) : base( rpcError, message, debugInformation, inner ) { }
/// <summary>
/// Converts an unknown caught exception into a Rpc response
/// </summary>
/// <param name="request">Current Rpc request</param>
/// <param name="ex">Unknown exception</param>
/// <returns>Rpc error response from the exception</returns>
private RpcResponse GetUnknownExceptionReponse(RpcRequest request, Exception ex)
{
this.logger?.LogException(ex, "An unknown error occurred. Returning an Rpc error response");
RpcUnknownException exception = new RpcUnknownException("An internal server error has occurred", ex);
RpcError error = new RpcError(exception, this.serverConfig.Value.ShowServerExceptions);
if (request?.Id == null)
{
return null;
}
RpcResponse rpcResponse = new RpcResponse(request.Id, error);
return rpcResponse;
}
/// <summary>
/// Initialize new instance which represents specified error.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="methodName">
/// Name of method which is related to this error.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="methodName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="methodName"/> is empty or blank.
/// </exception>
public RpcMethodInvocationException( RpcError rpcError, string methodName )
: this(rpcError, methodName, "Failed to call specified method.", null)
{
}
/// <summary>
/// Initialize new instance which represents specified error.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
public RpcProtocolException( RpcError rpcError )
: this(rpcError, "Some protocol violation is occurred in MessagePack-RPC communication.", null)
{
}
/// <summary>
/// Call the incoming Rpc request method and gives the appropriate response
/// </summary>
/// <param name="request">Rpc request</param>
/// <param name="route">Rpc route that applies to the current request</param>
/// <param name="httpContext">The context of the current http request</param>
/// <param name="jsonSerializerSettings">Json serialization settings that will be used in serialization and deserialization for rpc requests</param>
/// <returns>An Rpc response for the request</returns>
public async Task<RpcResponse> InvokeRequestAsync(RpcRequest request, RpcRoute route, HttpContext httpContext, JsonSerializerSettings jsonSerializerSettings = null)
{
try
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (route == null)
{
throw new ArgumentNullException(nameof(route));
}
}
catch (ArgumentNullException ex) // Dont want to throw any exceptions when doing async requests
{
return this.GetUnknownExceptionReponse(request, ex);
}
this.logger?.LogDebug($"Invoking request with id '{request.Id}'");
RpcResponse rpcResponse;
try
{
if (!string.Equals(request.JsonRpcVersion, JsonRpcContants.JsonRpcVersion))
{
throw new RpcInvalidRequestException($"Request must be jsonrpc version '{JsonRpcContants.JsonRpcVersion}'");
}
object[] parameterList;
RpcMethod rpcMethod = this.GetMatchingMethod(route, request, out parameterList, httpContext.RequestServices, jsonSerializerSettings);
bool isAuthorized = await this.IsAuthorizedAsync(rpcMethod, httpContext);
if (isAuthorized)
{
this.logger?.LogDebug($"Attempting to invoke method '{request.Method}'");
object result = await rpcMethod.InvokeAsync(parameterList);
this.logger?.LogDebug($"Finished invoking method '{request.Method}'");
JsonSerializer jsonSerializer = JsonSerializer.Create(jsonSerializerSettings);
if (result is IRpcMethodResult)
{
this.logger?.LogTrace($"Result is {nameof(IRpcMethodResult)}.");
rpcResponse = ((IRpcMethodResult)result).ToRpcResponse(request.Id, obj => JToken.FromObject(obj, jsonSerializer));
}
else
{
this.logger?.LogTrace($"Result is plain object.");
JToken resultJToken = result != null ? JToken.FromObject(result, jsonSerializer) : null;
rpcResponse = new RpcResponse(request.Id, resultJToken);
}
}
else
{
var authError = new RpcError(RpcErrorCode.InvalidRequest, "Unauthorized");
rpcResponse = new RpcResponse(request.Id, authError);
}
}
catch (RpcException ex)
{
this.logger?.LogException(ex, "An Rpc error occurred. Returning an Rpc error response");
RpcError error = new RpcError(ex, this.serverConfig.Value.ShowServerExceptions);
rpcResponse = new RpcResponse(request.Id, error);
}
catch (Exception ex)
{
rpcResponse = this.GetUnknownExceptionReponse(request, ex);
}
if (request.Id != null)
{
this.logger?.LogDebug($"Finished request with id '{request.Id}'");
//Only give a response if there is an id
return rpcResponse;
}
this.logger?.LogDebug($"Finished request with no id. Not returning a response");
return null;
}
/// <summary>
/// Initialize new instance with unpacked data.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="MsgPack.Rpc.RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="unpackedException">
/// Exception data from remote MessagePack-RPC server.
/// </param>
/// <exception cref="SerializationException">
/// Cannot deserialize instance from <paramref name="unpackedException"/>.
/// </exception>
protected internal RpcMethodInvocationException( RpcError rpcError, MessagePackObject unpackedException )
: base( rpcError, unpackedException )
{
this._methodName = unpackedException.GetString( MethodNameKeyUtf8 );
Contract.Assume( this._methodName != null, "Unpacked data does not have MethodName." );
}
public void OnConnectError( RpcError rpcError, Exception exception, bool completedSynchronously, object asyncState )
{
Contract.Assume( exception != null );
var lastError = new RpcProtocolException( rpcError, exception.Message, null, exception );
if ( completedSynchronously )
{
throw lastError;
}
else
{
var pool = asyncState as ConnectionPool;
// TODO: trace
try { }
finally
{
if ( !pool._statusTable.TryUpdate( this._context, LeaseStatus.Error, LeaseStatus.Initializing ) )
{
throw new InvalidOperationException( "ConectionPool is in inconsistent state. Initialized socket is not ininitializing." );
}
if ( !pool._connectErrors.TryAdd( this._context, lastError ) )
{
throw new InvalidOperationException( "ConectionPool is in inconsistent state. Initialized socket is already in error." );
}
Interlocked.Decrement( ref pool._initializingSocketCount );
}
}
}
/// <summary>
/// Initialize new instance which represents specified error.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
public RpcTransportException( RpcError rpcError )
: this(rpcError, "Some network error is occurred in MessagePack-RPC communication.", null)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="RpcProtocolException"/> class with a specified error message.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcProtocolException( RpcError rpcError, string message, string debugInformation ) : this( rpcError, message, debugInformation, null ) { }
/// <summary>
/// Initialize new instance which represents specified error.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcTransportException( RpcError rpcError, string message, string debugInformation )
: base(rpcError, message, debugInformation)
{
}
/// <summary>
/// Exception class: RpcException : System.ComponentModel.Win32Exception
/// Unspecified rpc error
/// </summary>
public RpcException(RpcError errorCode)
: base(unchecked((int) errorCode))
{
}
internal static void TraceRpcError( RpcError rpcError, string format, params object[] args )
{
_source.TraceEvent( GetTypeForRpcError( rpcError ), GetIdForRpcError( rpcError ), format, args );
}
/// <summary>
/// Initializes a new instance of the <see cref="RpcTransportException"/> class with a specified error message.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.TransportError"/> is used.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcTransportException( RpcError rpcError, string message, string debugInformation ) : this( rpcError, message, debugInformation, null ) { }
/// <summary>
/// Initializes a new instance of the <see cref="RpcMethodInvocationException"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.CallError"/> is used.
/// </param>
/// <param name="methodName">
/// Name of method which is related to this error.
/// </param>
/// <param name="message">
/// Error message to desribe condition. Note that this message should not include security related information.
/// </param>
/// <param name="debugInformation">
/// Debug information of error.
/// This value can be null for security reason, and its contents are for developers, not end users.
/// </param>
/// <param name="inner">
/// Exception which caused this error.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="methodName"/> is null.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="methodName"/> is empty or blank.
/// </exception>
/// <remarks>
/// <para>
/// For example, if some exception is occurred in server application,
/// the value of <see cref="Exception.ToString()"/> should specify for <paramref name="debugInformation"/>.
/// And then, user-friendly, safe message should be specified to <paramref name="message"/> like 'Internal Error."
/// </para>
/// <para>
/// MessagePack-RPC for CLI runtime does not propagate <see cref="RpcException.DebugInformation"/> for remote endpoint.
/// So you should specify some error handler to instrument it (e.g. logging handler).
/// </para>
/// </remarks>
public RpcMethodInvocationException( RpcError rpcError, string methodName, string message, string debugInformation, Exception inner )
: base( rpcError ?? RpcError.CallError, message, debugInformation, inner )
{
if ( methodName == null )
{
throw new ArgumentNullException( "methodName" );
}
if ( String.IsNullOrWhiteSpace( methodName ) )
{
throw new ArgumentException( "'methodName' cannot be empty nor blank.", "methodName" );
}
Contract.EndContractBlock();
this._methodName = methodName;
}
/// <summary>
/// Turns result data into a rpc response
/// </summary>
/// <param name="id">Rpc request id</param>
/// <param name="serializer">Json serializer function to use for objects for the response</param>
/// <returns>Rpc response for request</returns>
public RpcResponse ToRpcResponse(object id, Func<object, JToken> serializer)
{
JToken data = this.Data == null ? null : serializer(this.Data);
RpcError error = new RpcError(this.ErrorCode, this.Message, data);
return new RpcResponse(id, error);
}
/// <summary>
/// Initializes a new instance of the <see cref="RpcTransportException"/> class with the default error message.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.TransportError"/> is used.
/// </param>
public RpcTransportException( RpcError rpcError ) : this( rpcError, null, null, null ) { }
/// <summary>
/// Initializes a new instance of the <see cref="RpcProtocolException"/> class with the default error message.
/// </summary>
/// <param name="rpcError">
/// Metadata of error. If you specify null, <see cref="RpcError.RemoteRuntimeError"/> is used.
/// </param>
public RpcProtocolException( RpcError rpcError ) : this( rpcError, null, null, null ) { }