public static bool Connect()
{
messageHandler = new MessageHandler();
//create channel
//InstanceContext represents the running instance of the service.
//OperationContext is the instance of the client accessing the service.
InstanceContext instanceContext = new InstanceContext(messageHandler);
_factory = new DuplexChannelFactory <IChannel>(instanceContext, "GridEndpoint");
channel = _factory.CreateChannel();
try
{
((ICommunicationObject)channel).Open();
}
catch (CommunicationException e) {
((ICommunicationObject)channel).Abort();
_factory.Abort();
XMLLogger.WriteErrorMessage("Connector", "Could not find resolver. If you are using a custom resolver, please ensure that the service is running.");
XMLLogger.WriteErrorMessage("Connector", "System Error: " + e.ToString());
return(false);
}
return(true);
}
private void CreateProposal(StatusNotifyMessage message)
{
if (message.status == PeerStatus.Consumer)
{
if (_peerStatus == PeerStatus.Producer)
{
XMLLogger.WriteLocalActivity(message.energyReq + "kW Energy Request Received from: " + message.header.Sender);
float enAvailable = getEnergyLevel() - (_enPeak + _enSold);
if (enAvailable > 0)
{
float enSold = enAvailable >= message.energyReq ? message.energyReq : enAvailable;
EnergyProposalMessage respMessage = MessageFactory.createEnergyProposalMessage(
message.header.MessageID,
message.header.Sender,
_name,
enSold,
_price
);
Connector.channel.energyProposal(respMessage);
XMLLogger.WriteLocalActivity(enSold + "kW Energy Proposal Sent to: " + message.header.Sender);
}
}
}
}
private void _mainTimer_Elapsed(object sender, ElapsedEventArgs e)
{
//Check the energy level
if ((getEnergyLevel() + _enBought) < _enPeak)
{
if (messageSent == false)
{
float enReq = _enPeak - (getEnergyLevel() + _enBought);
Connector.channel.statusAdv(MessageFactory.createEnergyRequestMessage("@All", _name, _peerStatus, enReq));
messageSent = true;
XMLLogger.WriteLocalActivity(enReq + "kW Energy Request Sent to Local Network...");
//start the timer to waiting for proposals
if (_proposalCountdown.Enabled == false)
{
_proposalCountdown.Enabled = true;
}
}
}
else
{
messageSent = false;
_proposalCountdown.Enabled = false;
}
}
private bool StartLocalResolver()
{
bool bRet = false;
_customResolver = new ServiceHost(_crs);
XMLLogger.WriteLocalActivity("Starting Custom Local Peer Resolver Service...");
try
{
_crs.Open();
_customResolver.Open();
bRet = true;
XMLLogger.WriteLocalActivity("Custom Local Peer Resolver Service is started");
}
catch (Exception e)
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Error in starting Custom Local Peer Resolver Service");
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), e.ToString());
_crs.Close();
_customResolver.Abort();
bRet = false;
}
return(bRet);
}
private bool StartRemoteService()
{
bool bRet = false;
_remoteMessageHandler = new PeerServices();
_remoteHost = new ServiceHost(_remoteMessageHandler);
//To handle the remote traffic
_remoteMessageHandler.OnRemoteEnergyRequest += new manageEnergyRequest(ManageRemoteEnergyRequest);
_remoteMessageHandler.OnRemoteEnergyReply += new replyEnergyRequest(ManageRemoteEnergyReply);
_remoteMessageHandler.OnRemotePeerIsDown += new remotePeerIsDown(RemotePeerIsDown);
try
{
_remoteHost.Open();
bRet = true;
XMLLogger.WriteRemoteActivity("Remote service started.");
}
catch (Exception e)
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Unable to start Remote Service.");
//XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), e.ToString()); //For debug purpose
_remoteHost.Abort();
}
return(bRet);
}
private void HelloResponse(HelloMessage message)
{
//Elaborates the Hello Message
TempBuilding b = new TempBuilding();
#region setting fields
b.Address = message.Address;
b.Admin = message.Admin;
b.EnBought = 0;
b.EnSold = 0;
b.EnPeak = message.EnPeak;
b.EnPrice = message.EnPrice;
b.EnProduced = message.EnProduced;
b.EnType = message.EnType;
b.Name = message.header.Sender;
b.status = message.Status;
b.iconPath = b.status == PeerStatus.Producer ? @"/WPF_Resolver;component/img/producer.png" : @"/WPF_Resolver;component/img/consumer.png";
#endregion
lock (_lLock)
_buildings.Add(b);
XMLLogger.WriteLocalActivity("New Peer: " + b.Name + " is up!");
//Be polite! Send an HelloResponse
Connector.channel.HelloResponse(MessageFactory.createHelloResponseMessage("@All", Tools.getResolverName(), Tools.getResolverName()));
}
public void CloseService()
{
XMLLogger.WriteLocalActivity("Closing Application...");
_GarbageCollectorTimer.Enabled = false;
try
{
if (this.isRemoteServiceStarted == true)
{
_remoteHost.Close();
}
if (this.isRemoteConnected == true)
{
_remoteChannel.Close();
}
if (this.isLocalConnected == true)
{
_crs.Close();
_customResolver.Close();
}
StopService(); //Calls the base.StopService method
}
catch (Exception e)
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "App Fault on Exit");
}
}
private void ReceiveProposal(EnergyProposalMessage message)
{
if (message.header.Receiver == _name)
{
XMLLogger.WriteLocalActivity("Received Proposal for " + message.energyAvailable + "kW; price " + message.price + " From " + message.header.Sender);
_proposalList.Add(message);
}
}
public void StopService()
{
if (this.isConnected == true)
{
Connector.Disconnect();
XMLLogger.WriteLocalActivity("OffLine.");
}
}
private void ForwardEnergyRequest(StatusNotifyMessage message)
{
XMLLogger.WriteRemoteActivity("Forwarding " + message.energyReq + "kW Energy Request from: " + message.header.Sender);
XMLLogger.WriteRemoteActivity("MessageID: " + message.header.MessageID);
_requestThread = new Thread(new ParameterizedThreadStart(ConnectToRemoteHost));
_requestThread.Start(message);
}
public void StopEnergyProduction()
{
_pwManager.ShutDown();
Connector.channel.sayGoodBye(MessageFactory.createGoodByeMessage("@All", _name, _name));
base.StopService();
XMLLogger.WriteLocalActivity("Leaving the Mesh...");
}
ILogger ILoggerProvider.CreateLogger(string categoryName)
{
// Only 1 instance of logger per logger provider.
if (Logger == null)
{
Logger = new XMLLogger(LogLevel, categoryName, OutputPath, DefaultMaxRows);
}
return(Logger);
}
public void Start()
{
_pwManager.Start();
XMLLogger.WriteLocalActivity("Power Manager Started. Sending Hello Message.");
//send hello message
Connector.channel.sayHello(MessageFactory.CreateHelloMessage("@All", _name, _status, _enType, _enProduced,
_enPeak, _price, _address, _adminName));
XMLLogger.WriteLocalActivity("Hello Message Sent.");
}
public void StartService()
{
if (Connector.Connect())
{
this.isConnected = true;
XMLLogger.WriteLocalActivity("OnLine.");
}
else
{
this.isConnected = false;
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Connection Error");
}
}
private void ManageRemoteEnergyRequest(RemoteEnergyRequest message)
{
RemoteConnection remConn;
Guid MessageID = message.enReqMessage.header.MessageID;
string remotePeer = message.enReqMessage.header.Sender;
XMLLogger.WriteRemoteActivity("Received Remote Energy Request from: " + message.enReqMessage.header.Sender + " by Remote Resolver: " + message.header.Sender);
XMLLogger.WriteRemoteActivity("Message ID: " + message.enReqMessage.header.MessageID);
remConn = GetConnection(message.IP, message.port, ConnectionType.Incoming);
if (remConn == null)//If entry doesn't exist
{
remConn = new RemoteConnection()
{
type = ConnectionType.Incoming,
remoteResolver = new RemoteHost()
{
name = message.header.Sender,
IP = message.IP,
port = message.port,
netAddress = @"net.tcp://" + message.IP + ":" + message.port + @"/Remote"
}
};
remConn.requests.Add(MessageID, new RemoteRequest()
{
localePeerName = "",
remotePeerName = remotePeer,
energy = 0
});
_remoteConnections.Add(remConn);
}
else
{
remConn.requests.Add(MessageID, new RemoteRequest()
{
localePeerName = "",
remotePeerName = remotePeer,
energy = 0
});
}
_broker.EnergyLookUp(message.enReqMessage);
}
private void ProposalAccepted(EnergyAcceptMessage message)
{
if (message.header.Receiver == _name)
{
Boolean status = false;
float energyCanSell = 0;
float enAvailable = getEnergyLevel() - (_enPeak + _enSold);
if (enAvailable > 0)
{
energyCanSell = enAvailable >= message.energy ? message.energy : enAvailable;
status = true;
_enSold += energyCanSell;
XMLLogger.WriteLocalActivity("Ok, " + energyCanSell + " KW/h sold to " + message.header.Sender);
EnergyLink link = new EnergyLink(message.peerName, energyCanSell, _price);
consumers.Add(link);
//Advise the Local Resolver About the energy status change.
Connector.channel.updateEnergyStatus(MessageFactory.createUpdateStatusMessage(_resolverName, _name, _enSold, _enBought));
XMLLogger.WriteLocalActivity("Updating Stutus");
XMLLogger.WriteLocalActivity("Peer " + message.header.Sender + " - Energy Sold: " + _enSold);
XMLLogger.WriteLocalActivity("Peer " + message.header.Sender + " - Energy Bought: " + _enBought);
}
EndProposalMessage respMessage = MessageFactory.createEndProposalMessage(
message.header.MessageID,
message.header.Sender,
_name,
status,
energyCanSell,
_price
);
if (message.header.Sender == _resolverName)
{
Connector.channel.forwardEnergyReply(respMessage);
}
else
{
Connector.channel.endProposal(respMessage);
}
}
}
private void EndProposal(EndProposalMessage message)
{
if (message.header.Receiver == _name)
{
if (message.endStatus == true)
{
_enBought += message.energy;
XMLLogger.WriteLocalActivity("Energy received from " + message.header.Sender);
EnergyLink link = new EnergyLink(message.header.Sender, message.energy, message.price);
producers.Add(link);
//Advise the Local Resolver About the energy status change.
Connector.channel.updateEnergyStatus(MessageFactory.createUpdateStatusMessage(_resolverName, _name, _enSold, _enBought));
_proposalList.Clear();
if ((getEnergyLevel() + _enBought) < _enPeak)
{
messageSent = false;
}
}
else
{
//Nothing to do..Delete this Producer and go on with the next.
for (int i = 0; i < _proposalList.Count; i++)
{
if (_proposalList[i].header.Sender == message.header.Sender)
{
_proposalList.RemoveAt(i);
break;
}
}
//More Proposal? Evaluate it or Start again
if (_proposalList.Count > 0)
{
EvaluateProposal();
}
else
{
messageSent = false;
}
}
}
}
private void removeBuildingByName(string name)
{
string leavingPeer = name;
XMLLogger.WriteLocalActivity("Peer: " + leavingPeer + " is down!");
//Remove the deadly peer but first alert the folks.
Connector.channel.peerDown(MessageFactory.createPeerIsDownMessage("@All", this.name, leavingPeer));
lock (_connectionLock)
{
//Alert Remote Resolvers
foreach (var remConn in _remoteConnections)
{
NetTcpBinding tcpBinding = new NetTcpBinding();
EndpointAddress remoteEndpoint = new EndpointAddress(remConn.remoteResolver.netAddress);
tcpBinding.Security.Mode = SecurityMode.None;
ChannelFactory <IRemote> cf = new ChannelFactory <IRemote>(tcpBinding, remoteEndpoint);
IRemote tChannel = cf.CreateChannel();
try
{
tChannel.PeerDownAlert(MessageFactory.createPeerIsDownMessage("@All", this.name, leavingPeer));
}
catch (Exception ex)
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Error in sending Remote Peer Alert Message" + ex.ToString());
}
}
}
updateLocalConnectionsList(leavingPeer);
var itemToRemove = from b in _buildings
where b.Name == leavingPeer
select b;
lock (_lLock)
{
if (itemToRemove.Count() > 0)
{
_buildings.Remove(itemToRemove.First());
}
}
}
private void EvaluateProposal()
{
var m = (from element in _proposalList
orderby element.price ascending
select element).First();
XMLLogger.WriteLocalActivity("The lowest price is " + m.price + " provided by " + m.header.Sender);
EnergyAcceptMessage respMessage = MessageFactory.createEnergyAcceptMessage(
m.header.MessageID,
m.header.Sender,
_name,
this._name,
_enPeak - (getEnergyLevel() + _enBought));
Connector.channel.acceptProposal(respMessage);
}
//public void EnergyLookUp(object m)
public void EnergyLookUp(StatusNotifyMessage message)
{
//StatusNotifyMessage message = (StatusNotifyMessage)m;
_sem.Wait();
_originPeerName = message.header.Sender;
_enLookUp = message.energyReq;
_originGuid = message.header.MessageID;
message.header.Sender = this._name;
XMLLogger.WriteRemoteActivity("Broker is serving: " + message.header.MessageID + " session.");
Connector.channel.statusAdv(message);
_proposalCountdown.Enabled = true;
}
void ForwardEnergyReply(EndProposalMessage message)
{
RemoteConnection conn = GetConnectionByMessageID(message.header.MessageID, ConnectionType.Incoming);
XMLLogger.WriteRemoteActivity("Forwarding Remote Response about message: " + message.header.MessageID + " Status = " + message.endStatus);
XMLLogger.WriteRemoteActivity("Message ID: " + message.header.MessageID);
if (conn != null)
{
//Header re-handling
conn.requests[message.header.MessageID].localePeerName = message.header.Sender;
conn.requests[message.header.MessageID].energy = message.energy;
message.header.Receiver = conn.requests[message.header.MessageID].remotePeerName;
#region Creating Channel
NetTcpBinding tcpBinding = new NetTcpBinding();
EndpointAddress remoteEndpoint = new EndpointAddress(conn.remoteResolver.netAddress);
tcpBinding.Security.Mode = SecurityMode.None;
ChannelFactory <IRemote> cf = new ChannelFactory <IRemote>(tcpBinding, remoteEndpoint);
IRemote tChannel = cf.CreateChannel();
#endregion
RemoteEndProposalMessage remoteEndMessage = (MessageFactory.createRemoteEndProposalMessage(message, conn.remoteResolver.name, this.name, Tools.getLocalIP(), Tools.getResolverServicePort()));
try
{
tChannel.ReplyEnergyRequest(remoteEndMessage);
}
catch (Exception e)
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Error in Forwarding Energy Reply Message: " + e.ToString());
}
}
else
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Could not find the following message: " + message.header.MessageID);
}
}
private void _proposalCountdown_Elapsed(object sender, ElapsedEventArgs e)
{
_proposalCountdown.Enabled = false; //Stop the timer
if (_proposalList.Count > 0)
{
_proposalTimeout = 0;
EvaluateProposal();
}
else
{
_proposalTimeout++;
if (_proposalTimeout > 2) //Go Outbound
{
float enReq = _enPeak - (getEnergyLevel() + _enBought);
XMLLogger.WriteRemoteActivity("Going Outside to find " + enReq + " KW/h");
Connector.channel.forwardEnergyRequest(MessageFactory.createEnergyRequestMessage(_resolverName, _name, _peerStatus, enReq));
messageSent = true;
_proposalTimeout = 0;
//start the timer to waiting for proposals
if (_proposalCountdown.Enabled == false)
{
_proposalCountdown.Enabled = true;
}
}
else
{
XMLLogger.WriteLocalActivity("No Energy proposal receveid");
messageSent = false; //send the request message again
}
}
}
public virtual void peerDown(PeerIsDownMessage message)
{
XMLLogger.WriteRemoteActivity("Peer " + message.peerName + " is down");
}
private void ConnectToRemoteHost(object m)
{
bool connected = false;
StatusNotifyMessage message = (StatusNotifyMessage)m;
_remoteResolvers = Tools.getRemoteHosts();
while (connected == false && _nHostIndex < _remoteResolvers.Count)
{
lock (_counterLock)
{
//localhost connections filter
if (_remoteResolvers[_nHostIndex].IP == "127.0.0.1" || _remoteResolvers[_nHostIndex].IP.ToLower() == "localhost")
{
if (_nHostIndex < (_remoteResolvers.Count - 1))
{
_nHostIndex++;
}
else
{
_nHostIndex = 0;
}
continue;
}
XMLLogger.WriteRemoteActivity("Connecting to " + _remoteResolvers[_nHostIndex].IP);
NetTcpBinding tcpBinding = new NetTcpBinding();
EndpointAddress remoteEndpoint = new EndpointAddress(_remoteResolvers[_nHostIndex].netAddress);
tcpBinding.Security.Mode = SecurityMode.None;
ChannelFactory <IRemote> cf = new ChannelFactory <IRemote>(tcpBinding, remoteEndpoint);
_remoteChannel = cf.CreateChannel();
try
{
_remoteChannel.Open();
//Retrieve Remote IP Addresses
foreach (var newRemote in _remoteChannel.RetrieveContactList())
{
if (!_remoteResolvers.Exists(delegate(RemoteHost x) { return(x.netAddress == newRemote.netAddress); }))
{
_remoteResolvers.Add(newRemote);
Tools.updateRemoteHosts(newRemote);
}
}
XMLLogger.WriteRemoteActivity("Connected to: " + _remoteResolvers[_nHostIndex].IP);
XMLLogger.WriteRemoteActivity("Forwarding Energy Request from: " + message.header.Sender + "To: " + _remoteResolvers[_nHostIndex]);
XMLLogger.WriteRemoteActivity("Message ID: " + message.header.MessageID);
_remoteChannel.ManageRemoteEnergyRequest(MessageFactory.createRemoteEnergyRequestMessage(message,
_remoteResolvers[_nHostIndex].name,
this.name,
Tools.getLocalIP(),
Tools.getResolverServicePort()
));
this.isRemoteConnected = true;
connected = true;
}
catch (Exception e)
{
XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), "Unable to connect to remote host.");
//XMLLogger.WriteErrorMessage(this.GetType().FullName.ToString(), e.ToString()); //For debug purpose
_nHostIndex++;
if (_nHostIndex >= _remoteResolvers.Count)
{
_nHostIndex = 0;
_remoteChannel.Abort();
}
connected = false;
}
}
}
if (_nHostIndex >= _remoteResolvers.Count)
{
lock (_counterLock)
{
_nHostIndex = 0;
}
}
}
void ManageRemoteEnergyReply(RemoteEndProposalMessage message)
{
string localBuilding = message.endProposalMessage.header.Receiver;
string remoteBuilding = message.endProposalMessage.header.Sender;
float energyBought = message.endProposalMessage.energy;
if (message.endProposalMessage.endStatus == true)
{
RemoteConnection oC;
oC = GetConnection(message.IP, message.port, ConnectionType.Outgoing);
if (oC == null)
{
oC = new RemoteConnection()
{
type = ConnectionType.Outgoing,
remoteResolver = new RemoteHost()
{
name = message.header.Sender,
IP = message.IP,
port = message.port,
netAddress = @"net.tcp://" + message.IP + ":" + message.port + @"/Remote"
}
};
oC.requests.Add(message.endProposalMessage.header.MessageID, new RemoteRequest()
{
localePeerName = localBuilding,
remotePeerName = remoteBuilding,
energy = energyBought
});
_remoteConnections.Add(oC);
}
else
{
oC.requests.Add(message.endProposalMessage.header.MessageID, new RemoteRequest()
{
localePeerName = localBuilding,
remotePeerName = remoteBuilding,
energy = energyBought
});
}
XMLLogger.WriteRemoteActivity("Received Remote Energy Reply from: " + remoteBuilding + "@" + message.header.Sender);
XMLLogger.WriteRemoteActivity("Message ID: " + message.endProposalMessage.header.MessageID);
Connector.channel.endProposal(message.endProposalMessage);
}
else //No Energy From this remote resolver..Go with the next
{
Connector.channel.endProposal(message.endProposalMessage);
lock (_counterLock)
{
_nHostIndex++;
}
}
}
