private void CreateScriptHandler(string MainScript)
{
// Selecting service provider...
string SPProviderFileName;
AppDomain ad = AppDomain.CreateDomain("SP Files Search");
{
System.Type spsType = typeof(ServiceProviders);
ServiceProviders sps = (ServiceProviders)ad.CreateInstanceAndUnwrap(spsType.Assembly.FullName,
spsType.Namespace + "." + spsType.Name);
sps.FindProviders(System.Windows.Forms.Application.StartupPath);
this.opt.SetSPTypesDinamically(sps.GetProviders());
SPProviderFileName = sps.GetProviderFileName(this.opt.ServiceProviderType);
}
AppDomain.Unload(ad);
if (SPProviderFileName == null)
{
TraceOut.Put("No Service provider is found - Exiting!!");
return;
}
this.SPType = ServiceProviders.GetProviderType(SPProviderFileName);
TraceOut.Put("Creating " + "\"" + MainScript + "\"" + " script handler...");
ScriptHandler sh = new ScriptHandler(MainScript, this.ServiceName, this.SPType, this.opt);
this.ActiveScripts.Add(sh);
this.spStatus.Status = "OK";
this.spStatus.AdditionalInfo = "Initializing";
sh.SPStatusChanged += new Diacom.APCService.OnSPStatusChange(SPStatusChangedHandler);
TraceOut.Put("Script handler for " + "\"" + MainScript + "\"" + " created.");
sh.Start();
}
/// <summary>
/// Reads options for APCService.
/// </summary>
private void ReadConfig()
{
System.IO.FileStream fs = null;
try
{
TraceOut.Put("Reading configuration file...");
// File exists - read from it.
fs = new System.IO.FileStream(iniConfigFileName, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite);
optFormatter = new System.Runtime.Serialization.Formatters.Soap.SoapFormatter();
APCServiceOptions _opt = ((APCServiceOptions)(optFormatter.Deserialize(fs)));
_opt.CopyTo(this.opt);
TraceOut.Put("Acting with following options: " + Environment.NewLine + this.opt.ToString());
}
catch (Exception ix)
{
// No file - setting default options.
TraceOut.Put(ix);
TraceOut.Put("Service Provider will be set by default...");
APCServiceOptions _opt = new APCServiceOptions();
_opt.CopyTo(this.opt);
}
finally
{
if (fs != null)
{
fs.Close();
}
}
}
/// <summary>
/// Gets the type of the service provider given it's name.
/// </summary>
/// <param name="ProviderFileName">A type of the Service provider to instantiate.</param>
/// <returns></returns>
public static System.Type GetProviderType(string ProviderFileName)
{
try
{
System.Reflection.Assembly asmbl = System.Reflection.Assembly.LoadFrom(ProviderFileName);
foreach (System.Reflection.Module module in asmbl.GetModules())
{
// Checking each module in assembly.
foreach (System.Type type in module.GetTypes())
{
if (type.IsNotPublic)
{
continue;
}
// Checking each interface in module.
foreach (System.Type interf in type.GetInterfaces())
{
// Checking each implemented interface in class.
if (interf.Equals(typeof(ISP)))
{
TraceOut.Put("Type that implements interface: " + type.ToString());
return(type);
}
}
}
}
}
catch (Exception x)
{
TraceOut.Put(x);
}
return(null);
}
/// <summary>
/// Cleans up any resources being used.
/// </summary>
public void Dispose()
{
TraceOut.Put("Shutting down script " + this.ScriptFileName);
try
{
TraceOut.Put("Calling this.APCStCtrl.Dispose");
if (this.APCStCtrl != null)
{
this.APCStCtrl.Dispose();
}
}
catch (Exception ix)
{
TraceOut.Put(ix);
}
try
{
TraceOut.Put("Calling this.SPCoreHandle.Disconnect");
if (this.SPHandle != null)
{
this.SPHandle.SPStatusEvent -= new Diacom.SPStatusEventHandler(this.ServiceProviderStatusEventHandler);
this.SPHandle.Disconnect();
this.SPHandle.Dispose();
}
}
catch (Exception ix)
{
TraceOut.Put(ix);
}
}
/// <summary>
/// Login to Server.
/// </summary>
/// <returns>True if success, otherwise false.</returns>
private bool LoginToServer()
{
try
{
TraceOut.Put("Starting login...");
// Connecting to server.
SPHandle.Connect(opt.ServerIPAddress, opt.ServerPort, opt.ControlLineLogonType, opt.ControlLineID, opt.ControlLinePassword, opt.LogonTimeout);
// Connection established.
TraceOut.Put("Connection to server established... checking for connection status...");
StatusText = this.SPHandle.Status().ToString();
TraceOut.Put("Status of Service Provider is " + StatusText);
if (StatusText != Diacom.SPStatus.OK.ToString())
{
StatusInfo = this.ServiceName +
" Error " + this.opt.ServiceProviderType.ToString() + " with : " +
Environment.NewLine + this.opt.ToString() + Environment.NewLine +
"Service provider status: " + this.SPHandle.Status();
}
else
{
StatusInfo = "Success";
}
ReportStatus();
TraceOut.Put("Connection complete.");
}
catch (Exception x)
{
TraceOut.Put(x);
StatusText = Diacom.SPStatus.ERROR_CONNECTION.ToString();
StatusInfo = this.ServiceName + ": Login Exception :" + Environment.NewLine + this.opt.ToString() + Environment.NewLine + "Service provider status: " + this.SPHandle.Status();
ReportStatus();
return(false);
}
return(true);
}
/// <summary>
/// Stop this service.
/// </summary>
protected override void OnStop()
{
try
{
TraceOut.Put("[APCService] Stopping ... Calling Dispose method...");
WriteConfig();
TraceOut.Put("Disposing all script handlers...");
foreach (ScriptHandler sc in this.ActiveScripts)
{
try
{
sc.SPStatusChanged -= new Diacom.APCService.OnSPStatusChange(SPStatusChangedHandler);
sc.Dispose();
}
catch (Exception _e)
{
TraceOut.Put(_e);
}
}
ActiveScripts.Clear();
}
catch (Exception _e)
{
TraceOut.Put(_e);
}
finally
{
base.OnStop();
}
}
/// <summary>
/// Executes when timer ticks.
/// </summary>
/// <param name="state">Parameter, which is the name of the script file.</param>
private void RestartTimerCallbackEntry(object state)
{
TraceOut.Put("RestartTimerCallbackEntry: restarting timer activated...");
this.RestartTimer.Dispose();
this.RestartTimer = null;
ReadConfig();
CreateScriptHandler((string)state);
}
/// <summary>
/// Initializes all class components.
/// </summary>
public APCService()
{
TraceOut.Put("Service Constructor called.");
this.AutoLog = false;
this.ServiceName = "APCService";
ReadConfig();
RegisterTCPChannel();
RegisterRemoteTypes();
}
private void ServiceProviderStatusEventHandler(object source, Diacom.SPStatusEventArgs e)
{
if (e == null)
{
return;
}
StatusText = e.Status.ToString();
StatusInfo = e.Info;
TraceOut.Put("SPStatusEvent: Event: " + StatusText + Environment.NewLine + "Info: " + StatusInfo);
ReportStatus();
}
/// <summary>
/// Main thread for APCService application.
/// </summary>
private void StartHandlers()
{
TraceOut.Put(this.TraceMessagesSeparator + " Starting execution...");
// Reading configuration...
ReadConfig();
// Creating new instances for each main script file...
foreach (string Script in this.opt.APCScriptFileName.Split(';'))
{
CreateScriptHandler(Script);
}
// All done.
TraceOut.Put("All done.");
}
private void UnRegisterTCPChannel()
{
try
{
ChannelServices.UnregisterChannel(this.TCPChannel);
this.TCPChannel = null;
TraceOut.Put("TCP channel unregistered...");
}
catch (Exception ix)
{
TraceOut.Put(ix);
}
}
/// <summary>
/// Unegisters remote types.
/// </summary>
private void UnRegisterRemoteTypes()
{
try
{
// Disconnect existing remote objects
RemotingServices.Disconnect(this.opt);
RemotingServices.Disconnect(this.spStatus);
TraceOut.Put("Remote types unregistered...");
}
catch (Exception ix)
{
TraceOut.Put(ix);
}
}
private void Run()
{
try
{
// Creating new instance of SP.
TraceOut.Put("Creating new ISP instance...");
this.SPHandle = ((ISP)(Activator.CreateInstance(this.SPType)));
this.SPHandle.SPStatusEvent += new SPStatusEventHandler(this.ServiceProviderStatusEventHandler);
TraceOut.Put("Event handler added...");
// Creating control class.
TraceOut.Put("Creating APCControl...");
this.APCStCtrl = new APCStates.APCStateControl(this.SPHandle);
this.APCStCtrl.APCControlEvent += new SPStatusEventHandler(this.ServiceProviderStatusEventHandler);
TraceOut.Put("APCControl created...");
// Adding states.
TraceOut.Put("Added APC service states folders: " + this.opt.APCServiceStatesFolders + ".");
this.APCStCtrl.AddStates(this.opt.APCServiceStatesFolders);
// Adding script.
this.APCStCtrl.AddScript(this.ScriptFileName);
TraceOut.Put("Main script file defined...");
// Check if where is no connection.
if (this.SPHandle.Status() == Diacom.SPStatus.DISCONNECTED)
{
TraceOut.Put("Main did not connect to the Server - Connecting ...");
// No connection means the script uses default service provider.
if (!LoginToServer())
{
TraceOut.Put("Connection failed.");
return;
}
TraceOut.Put("Connected.");
}
// Adding lines.
TraceOut.Put("Adding lines...");
foreach (SPLine line in this.SPHandle.GetLines())
{
this.APCStCtrl.AddLine(line);
}
TraceOut.Put("Lines added.");
// Initializating lines.
this.APCStCtrl.InitLines();
TraceOut.Put("Lines initialization complete.");
}
catch (Exception x)
{
TraceOut.Put("Exception during creating class");
TraceOut.Put(x);
}
}
/// <summary>
/// Initiates a search for all nested service providers starting from a specified directory.
/// </summary>
/// <param name="ProvidersDirectory">The Directory to start search in.</param>
public void FindProviders(string ProvidersDirectory)
{
try
{
// Creating list of all assemblies in current directory.
System.IO.DirectoryInfo startupDir = new System.IO.DirectoryInfo(ProvidersDirectory);
// Generating possible service provider types list.
ExploreDirs(startupDir);
ScanDirs();
}
catch (Exception x)
{
TraceOut.Put(x);
}
}
private void SPStatusChangedHandler(object sender, SPStatusChangedEventArgs data)
{
TraceOut.Put("SPStatusChanged Event arrived. Status = " + data.spStatus.Status + ". Info = " + data.spStatus.AdditionalInfo);
this.spStatus.Status = data.spStatus.Status;
this.spStatus.AdditionalInfo = data.spStatus.AdditionalInfo;
if (!spStatus.Status.ToUpper().Equals("OK"))
{
ScriptHandler currentSH = (ScriptHandler)sender;
TraceOut.Put("Restarting connection: disposing objects, creating timer...");
currentSH.SPStatusChanged -= new Diacom.APCService.OnSPStatusChange(SPStatusChangedHandler);
this.ActiveScripts.Remove(currentSH);
currentSH.Dispose();
this.RestartTimer = new System.Threading.Timer(new System.Threading.TimerCallback(this.RestartTimerCallbackEntry), currentSH.FileName, 20000L, System.Threading.Timeout.Infinite);
}
}
/// <summary>
/// Registers remote types.
/// </summary>
private void RegisterRemoteTypes()
{
try
{
RemotingConfiguration.RegisterWellKnownServiceType(typeof(APCServiceProviderStatus),
"APCServiceProviderStatus.rem", WellKnownObjectMode.Singleton);
RemotingServices.Marshal(this.spStatus, "APCServiceProviderStatus.rem");
RemotingConfiguration.RegisterWellKnownServiceType(typeof(APCServiceOptions),
"APCService.rem", WellKnownObjectMode.Singleton);
RemotingServices.Marshal(this.opt, "APCService.rem");
TraceOut.Put("Remote types registered...");
}
catch (Exception ix)
{
TraceOut.Put(ix);
}
}
private void ScanDirs()
{
// Check if ISP interface is somewhere implemented.
TraceOut.Put("Getting service providers...");
foreach (string asmblPath in files)
{
TraceOut.Put("Loading Assembly :" + asmblPath + " ....");
// Checking each assembly.
try
{
System.Reflection.Assembly asmbl = System.Reflection.Assembly.LoadFrom(asmblPath);
foreach (System.Reflection.Module module in asmbl.GetModules())
{
// Checking each module in assembly.
foreach (System.Type type in module.GetTypes())
{
if (type.IsNotPublic)
{
continue;
}
// Checking each interface in module.
foreach (System.Type interf in type.GetInterfaces())
{
// Checking each implemented interface in class.
if (interf.Equals(typeof(ISP)))
{
TraceOut.Put("Class that implements interface: " + type.ToString());
// ISP interface imlpemented, adding the class.
string SPTitle = ((System.Reflection.AssemblyTitleAttribute)(asmbl.GetCustomAttributes(typeof(System.Reflection.AssemblyTitleAttribute), true)[0])).Title;
types.Add(SPTitle);
providers[SPTitle] = asmblPath;
TraceOut.Put("Collecting service providers: \"" + SPTitle + "\" added...");
}
}
}
}
}
catch (Exception x)
{
TraceOut.Put(x);
}
}
}
/// <summary>
/// Set things in motion so your service can do its work.
/// </summary>
protected override void OnStart(string[] args)
{
try
{
TraceOut.Put("[APCService] Starting.. Creating and starting main thread...");
// Creating and starting main thread.
this.mainThreadHandle = new System.Threading.Thread(new System.Threading.ThreadStart(this.StartHandlers));
this.mainThreadHandle.SetApartmentState(System.Threading.ApartmentState.MTA);
this.mainThreadHandle.Priority = System.Threading.ThreadPriority.Normal;
this.mainThreadHandle.IsBackground = false;
this.mainThreadHandle.Name = "APCSMT";
this.mainThreadHandle.Start();
}
catch (Exception _e)
{
TraceOut.Put(_e);
}
finally
{
base.OnStart(args);
}
}
/// <summary>
/// Cleans up any resources being used.
/// </summary>
protected override void Dispose(bool disposing)
{
TraceOut.Put("Service Dispose called. Disposing = " + disposing);
if (disposed)
{
return;
}
disposed = true;
GC.SuppressFinalize(this);
if (disposing)
{
if (components != null)
{
this.components.Dispose();
}
if (this.RestartTimer != null)
{
this.RestartTimer.Dispose();
this.RestartTimer = null;
}
UnRegisterRemoteTypes();
UnRegisterTCPChannel();
TraceOut.Put("Disposing all script handlers...");
foreach (ScriptHandler sc in this.ActiveScripts)
{
try
{
sc.SPStatusChanged -= new Diacom.APCService.OnSPStatusChange(SPStatusChangedHandler);
sc.Dispose();
}
catch (Exception _e)
{
TraceOut.Put(_e);
}
}
}
base.Dispose(disposing);
}
/// <summary>
/// Creats TCP channel for sharing APCServiceCore::GetOptions()
/// and APCServiceCore::SetOptions(...) functions.
/// </summary>
private void RegisterTCPChannel()
{
try
{
BinaryClientFormatterSinkProvider clientProvider = null;
BinaryServerFormatterSinkProvider serverProvider = new BinaryServerFormatterSinkProvider();
serverProvider.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilterLevel.Full;
IDictionary props = new Hashtable();
props["port"] = opt.MachinePort;
props["exclusiveAddressUse"] = false;
props["typeFilterLevel"] = System.Runtime.Serialization.Formatters.TypeFilterLevel.Full;
this.TCPChannel = new TcpChannel(props, clientProvider, serverProvider);
ChannelServices.RegisterChannel(this.TCPChannel, false);
this.TCPPort = opt.MachinePort;
TraceOut.Put("TCP channel registered...");
}
catch (Exception ix)
{
TraceOut.Put(ix);
}
}
private void WriteConfig()
{
System.IO.FileStream fs = null;
try
{
// Saving settings.
fs = new System.IO.FileStream(iniConfigFileName, System.IO.FileMode.Create, System.IO.FileAccess.Write, System.IO.FileShare.ReadWrite);
optFormatter = new System.Runtime.Serialization.Formatters.Soap.SoapFormatter();
optFormatter.Serialize(fs, opt);
TraceOut.Put("Saving " + this.opt.ToString());
}
catch (Exception _e)
{
TraceOut.Put(_e);
TraceOut.Put("Cannot save service configuration...");
}
finally
{
if (fs != null)
{
fs.Close();
}
}
}
public void Start()
{
this.StartThreadHandle.Start();
TraceOut.Put("[Script Handler]: thread started...");
}
/// <summary>
/// The main entry point for the process. Starts the service.
/// </summary>
static void Main()
{
TraceOut.Put("Service Main called.");
ServiceBase.Run(new APCService());
}
