/// <summary>
/// Set initial state information to this component, allow to accept dataDelivery before initialization begins.
/// </summary>
/// <param name="dataDelivery"></param>
/// <returns></returns>
public bool SetInitialState(PlatformSettings data)
{
lock (this)
{
return(OnSetInitialState(data));
}
}
protected override bool OnSetInitialState(PlatformSettings data)
{
if (base.OnSetInitialState(data) == false)
{
return(false);
}
_filesFolder = data.GetMappedFolder("FilesFolder");
return(true);
}
/// <summary>
///
/// </summary>
public static ADOPersistenceHelper CreatePersistenceHelper(PlatformSettings settings)
{
ADOPersistenceHelper helper = new ADOPersistenceHelper();
if (helper.Initialize(settings.GetMappedFolder("PersistencePath")) == false)
{
return(null);
}
helper.SetupTypeMapping(typeof(Platform), "Platforms", null);
helper.SetupTypeMapping(typeof(PlatformComponent), "PlatformComponents", null);
return(helper);
}
/// <summary>
///
/// </summary>
protected void LoadModules(PlatformSettings platformSettings)
{
List <string> loadingModules = new List <string>();
string[] optionalModules = platformSettings.GetString("OptionalModules").Replace("\r", string.Empty).Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
loadingModules.AddRange(optionalModules);
string[] externalModules = platformSettings.GetString("ExternalModules").Replace("\r", string.Empty).Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
loadingModules.AddRange(externalModules);
// Load the external optional references for the solution.
// Loaded assemblies are attached as runtime references to the main application assembly.
foreach (string referenceName in loadingModules)
{
string filePath = GeneralHelper.MapRelativeFilePathToExecutingDirectory(referenceName);
string operationResultMessage = string.Empty;
Assembly assembly = null;
try
{
// If you get a *warning* here (LoadFromContext) ignore it.
// Using LoadFrom is important, since it will also allow to find
// the newly loaded assemblies references, if they are in its folder.
assembly = Assembly.LoadFrom(filePath);
Type[] types = assembly.GetTypes();
}
catch (Exception ex)
{
operationResultMessage = ex.Message;
}
if (assembly != null)
{
ReflectionHelper.AddDynamicReferencedAssembly(Assembly.GetEntryAssembly(), assembly);
}
else
{
SystemMonitor.OperationWarning("Failed to load external dynamic module [" + referenceName + ", " + filePath + "; " + operationResultMessage + "]", TracerItem.PriorityEnum.Low);
}
}
//AppDomain.CurrentDomain.DynamicDirectory
Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
//AppDomain.CurrentDomain.
}
/// <summary>
///
/// </summary>
protected static SQLiteADOPersistenceHelper CreatePersistenceHelper(PlatformSettings settings)
{
SQLiteADOPersistenceHelper helper = new SQLiteADOPersistenceHelper();
if (helper.Initialize(settings.GetMappedPath("DataStoreDBPath"), true) == false)
{
return(null);
}
if (helper.ContainsTable("DataStoreEntries") == false)
{// Create the table structure.
helper.ExecuteCommand(ForexPlatformPersistence.Properties.Settings.Default.DataStoreDBSchema);
}
helper.SetupTypeMapping(typeof(DataStoreEntry), "DataStoreEntries");
return(helper);
}
/// <summary>
/// Helper, creates the correspoding persistence helper.
/// </summary>
protected static SQLiteADOPersistenceHelper CreatePersistenceHelper(PlatformSettings settings)
{
SQLiteADOPersistenceHelper helper = new SQLiteADOPersistenceHelper();
if (helper.Initialize(settings.GetMappedPath("EventsDBPath"), true) == false)
{
return(null);
}
if (helper.ContainsTable("Events") == false)
{// Create the table structure.
object result = helper.ExecuteCommand(ForexPlatformPersistence.Properties.Settings.Default.EventsDBSchema);
}
helper.SetupTypeMapping(typeof(EventSource), "EventSources");
helper.SetupTypeMapping(typeof(EventBase), "Events");
return(helper);
}
/// <summary>
///
/// </summary>
public bool Initialize(PlatformSettings settings)
{
lock (this)
{
_persistenceHelper = Platform.CreatePersistenceHelper(settings);
_persistenceHelper.SetupTypeMapping(typeof(DataStoreEntry), "DataStoreEntries", null);
_dataStoreFilesFolder = settings.GetMappedFolder("DataStoreFolder");
}
GeneralHelper.FireAndForget(
delegate()
{
try
{ // Download online dataDelivery source entries.
WebRequest request = WebRequest.Create(settings.DataStoreOnlineSourcesXml);
request.Timeout = (int)TimeSpan.FromSeconds(15).TotalMilliseconds;
TextReader reader = new StreamReader(request.GetResponse().GetResponseStream());
// If you get an error here in DEBUG MODE, just ignore it, it is a bug in VS 2008.
XmlSerializer serializer = new XmlSerializer(typeof(OnlineEntrySource[]));
OnlineEntrySource[] sources = (OnlineEntrySource[])serializer.Deserialize(reader);
lock (_onlineEntrySources)
{ // _onlineEntrySources contains serialized existing sources.
_onlineEntrySources.AddRange(sources);
sources = _onlineEntrySources.ToArray();
}
foreach (OnlineEntrySource source in sources)
{
if (OnlineEntrySourceAddedEvent != null)
{
OnlineEntrySourceAddedEvent(this, source);
}
}
}
catch (Exception ex)
{
SystemMonitor.OperationError("Failed to obtain online data souces [" + ex.Message + "].", TracerItem.PriorityEnum.Low);
}
}
);
if (Directory.Exists(_dataStoreFilesFolder) == false)
{
if (Directory.CreateDirectory(_dataStoreFilesFolder) == null)
{
SystemMonitor.OperationError("Failed to create Data Store folder [" + settings.GetMappedFolder("DataStoreFolder") + "]");
return(false);
}
}
List <DataStoreEntry> entries = _persistenceHelper.Select <DataStoreEntry>(null, null);
foreach (DataStoreEntry entry in entries)
{
DoAddEntry(entry);
}
ChangeOperationalState(OperationalStateEnum.Operational);
return(true);
}
/// <summary>
///
/// </summary>
public bool Initialize(PlatformSettings settings)
{
lock (this)
{
_persistenceHelper = Platform.CreatePersistenceHelper(settings);
_persistenceHelper.SetupTypeMapping(typeof(DataStoreEntry), "DataStoreEntries", null);
_dataStoreFilesFolder = settings.GetMappedFolder("DataStoreFolder");
}
GeneralHelper.FireAndForget(
delegate()
{
try
{// Download online dataDelivery source entries.
WebRequest request = WebRequest.Create(settings.DataStoreOnlineSourcesXml);
request.Timeout = (int)TimeSpan.FromSeconds(15).TotalMilliseconds;
TextReader reader = new StreamReader(request.GetResponse().GetResponseStream());
// If you get an error here in DEBUG MODE, just ignore it, it is a bug in VS 2008.
XmlSerializer serializer = new XmlSerializer(typeof(OnlineEntrySource[]));
OnlineEntrySource[] sources = (OnlineEntrySource[])serializer.Deserialize(reader);
lock (_onlineEntrySources)
{// _onlineEntrySources contains serialized existing sources.
_onlineEntrySources.AddRange(sources);
sources = _onlineEntrySources.ToArray();
}
foreach (OnlineEntrySource source in sources)
{
if (OnlineEntrySourceAddedEvent != null)
{
OnlineEntrySourceAddedEvent(this, source);
}
}
}
catch (Exception ex)
{
SystemMonitor.OperationError("Failed to obtain online data souces [" + ex.Message + "].", TracerItem.PriorityEnum.Low);
}
}
);
if (Directory.Exists(_dataStoreFilesFolder) == false)
{
if (Directory.CreateDirectory(_dataStoreFilesFolder) == null)
{
SystemMonitor.OperationError("Failed to create Data Store folder [" + settings.GetMappedFolder("DataStoreFolder") + "]");
return false;
}
}
List<DataStoreEntry> entries = _persistenceHelper.Select<DataStoreEntry>(null, null);
foreach (DataStoreEntry entry in entries)
{
DoAddEntry(entry);
}
ChangeOperationalState(OperationalStateEnum.Operational);
return true;
}
/// <summary>
/// This is called only one time in the lifetime of the source (just after creation, before very first init).
/// It allows it to read dataDelivery from settings, if it needs to.
/// </summary>
/// <param name="dataDelivery"></param>
/// <returns></returns>
protected override bool OnSetInitialState(PlatformSettings data)
{
return true;
}
/// <summary>
///
/// </summary>
protected void LoadModules(PlatformSettings platformSettings)
{
List<string> loadingModules = new List<string>();
string[] optionalModules = platformSettings.GetString("OptionalModules").Replace("\r", string.Empty).Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
loadingModules.AddRange(optionalModules);
string[] externalModules = platformSettings.GetString("ExternalModules").Replace("\r", string.Empty).Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
loadingModules.AddRange(externalModules);
// Load the external optional references for the solution.
// Loaded assemblies are attached as runtime references to the main application assembly.
foreach (string referenceName in loadingModules)
{
string filePath = GeneralHelper.MapRelativeFilePathToExecutingDirectory(referenceName);
string operationResultMessage = string.Empty;
Assembly assembly = null;
try
{
// If you get a *warning* here (LoadFromContext) ignore it.
// Using LoadFrom is important, since it will also allow to find
// the newly loaded assemblies references, if they are in its folder.
assembly = Assembly.LoadFrom(filePath);
Type[] types = assembly.GetTypes();
}
catch (Exception ex)
{
operationResultMessage = ex.Message;
}
if (assembly != null)
{
ReflectionHelper.AddDynamicReferencedAssembly(Assembly.GetEntryAssembly(), assembly);
}
else
{
SystemMonitor.OperationWarning("Failed to load external dynamic module [" + referenceName + ", " + filePath + "; " + operationResultMessage + "]", TracerItem.PriorityEnum.Low);
}
}
//AppDomain.CurrentDomain.DynamicDirectory
Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
//AppDomain.CurrentDomain.
}
/// <summary>
/// Helper, creates the persistence helper for the platform.
/// </summary>
protected static SQLiteADOPersistenceHelper CreatePlatformPersistenceHelper(PlatformSettings settings)
{
SQLiteADOPersistenceHelper helper = new SQLiteADOPersistenceHelper();
if (helper.Initialize(settings.GetMappedPath("PlatformDBPath"), true) == false)
{
return null;
}
if (helper.ContainsTable("Platforms") == false)
{// Create the table structure.
helper.ExecuteCommand(ForexPlatformPersistence.Properties.Settings.Default.PlatformDBSchema);
}
helper.SetupTypeMapping(typeof(Platform), "Platforms");
helper.SetupTypeMapping(typeof(PlatformComponent), "PlatformComponents");
return helper;
}
/// <summary>
/// The initialization of a platform consumes 2 main dataDelivery sources.
/// The settings is used for primary, startup information (like where
/// is the persistence DB file etc.) and the information inside the
/// persistence is than on used to create components etc.
/// </summary>
public bool Initialize(PlatformSettings platformSettings)
{
TracerHelper.TraceEntry();
SystemMonitor.CheckThrow(_settings == null, "Platform already initialized.");
lock (this)
{
_settings = platformSettings;
if (_persistenceHelper == null)
{
_persistenceHelper = CreatePlatformPersistenceHelper(platformSettings);
}
}
if (_persistenceHelper == null)
{
return false;
}
LoadModules(_settings);
if (PersistenceHelper.Count<Platform>(new MatchExpression("Name", this.Name)) == 0)
{// This is a new platform.
lock (this)
{
_guid = Guid.NewGuid();
}
if (PersistenceHelper.Insert<Platform>(this, null) == false)
{
SystemMonitor.Error("Failed to persist new platform [" + this.Name + "]");
return false;
}
}
else
{// This is existing.
// Now try to load self from persistance storage.
bool selectionResult = PersistenceHelper.SelectScalar<Platform>(this, new MatchExpression("Name", this.Name));
if (selectionResult == false)
{// Failed to load self from DB.
return false;
}
}
lock (this)
{
if (_serializationData.ContainsValue("diagnosticsMode"))
{
_settings.DiagnosticsMode = _serializationData.GetBoolean("diagnosticsMode");
}
if (_serializationData.ContainsValue("uiSerializationInfo"))
{
// The main serialization dataDelivery stores the UI orderInfo.
_uiSerializationInfo = _serializationData.GetValue<SerializationInfoEx>("uiSerializationInfo");
}
if (_serializationData.ContainsValue("componentSpecificSerializationInfo"))
{
// The main serialization dataDelivery stores the UI orderInfo.
_componentSpecificSerializationInfo = _serializationData.GetValue<SerializationInfoEx>("componentSpecificSerializationInfo");
}
}
//_server = new Arbiter.TransportIntegrationServer(_platformUri);
//Arbiter.AddClient(_server);
GeneralHelper.FireAndForget(delegate()
{// LoadFromFile components.
// Registering of components is better done outside the lock,
// since components may launch requests to platform at initializations.
_isLoading = true;
// Components are stored in the PlatformComponents database, they are being serialized and the entire object is
// persisted in the DB, as well as the type information for it and a reference to the platform instance it belongs to.
List<long> failedSerializationsIds = new List<long>();
List<PlatformComponent> components = PersistenceHelper.SelectSerializedType<PlatformComponent>(
new MatchExpression("PlatformId", this.Id), "Data", null, failedSerializationsIds);
SortedList<int, List<PlatformComponent>> componentsByLevel = GetComponentsByLevel(components);
GatherMandatoryComponents(componentsByLevel);
foreach (int level in componentsByLevel.Keys)
{// Register lower level components first.
foreach (PlatformComponent component in componentsByLevel[level])
{
if (DoRegisterComponent(component, true) == false
&& component.Id.HasValue && ComponentDeserializationFailedEvent != null)
{
ComponentDeserializationFailedEvent(component.Id.Value, component.GetType().Name);
}
}
}
// Handle failed deserializations.
foreach (int id in failedSerializationsIds)
{
string typeName = "Unknown";
try
{// Extract the type of this entry.
List<object[]> result = PersistenceHelper.SelectColumns<PlatformComponent>(
new MatchExpression("Id", id), new string[] { "Type" }, 1 );
Type type = Type.GetType(result[0][0].ToString());
if (type != null)
{
typeName = type.Name;
}
}
catch(Exception ex)
{
SystemMonitor.Error("Failed to extract type information [" + ex.Message + "].");
}
if (ComponentDeserializationFailedEvent != null)
{
ComponentDeserializationFailedEvent(id, typeName);
}
}
_isLoading = false;
});
return true;
}
protected virtual bool OnSetInitialState(PlatformSettings data)
{
return true;
}
/// <summary>
/// Set initial state information to this component, allow to accept dataDelivery before initialization begins.
/// </summary>
/// <param name="dataDelivery"></param>
/// <returns></returns>
public bool SetInitialState(PlatformSettings data)
{
lock (this)
{
return OnSetInitialState(data);
}
}
protected virtual bool OnSetInitialState(PlatformSettings data)
{
return(true);
}
/// <summary>
/// The initialization of a platform consumes 2 main dataDelivery sources.
/// The settings is used for primary, startup information (like where
/// is the persistence DB file etc.) and the information inside the
/// persistence is than on used to create components etc.
/// </summary>
public bool Initialize(PlatformSettings platformSettings)
{
TracerHelper.TraceEntry();
SystemMonitor.CheckThrow(_settings == null, "Platform already initialized.");
lock (this)
{
_settings = platformSettings;
if (_persistenceHelper == null)
{
_persistenceHelper = CreatePersistenceHelper(platformSettings);
}
}
if (_persistenceHelper == null)
{
return(false);
}
LoadModules(_settings);
if (_persistenceHelper.Count <Platform>(new MatchExpression("Name", this.Name)) == 0)
{// This is a new platform.
lock (this)
{
_guid = Guid.NewGuid();
}
if (_persistenceHelper.Insert <Platform>(this, null) == false)
{
SystemMonitor.Error("Failed to persist new platform [" + this.Name + "]");
return(false);
}
}
else
{// This is existing.
// Now try to load self from persistance storage.
bool selectionResult = _persistenceHelper.SelectScalar <Platform>(this, new MatchExpression("Name", this.Name));
if (selectionResult == false)
{// Failed to load self from DB.
return(false);
}
}
lock (this)
{
if (_serializationData.ContainsValue("diagnosticsMode"))
{
_settings.DiagnosticsMode = _serializationData.GetBoolean("diagnosticsMode");
}
if (_serializationData.ContainsValue("uiSerializationInfo"))
{
// The main serialization dataDelivery stores the UI orderInfo.
_uiSerializationInfo = _serializationData.GetValue <SerializationInfoEx>("uiSerializationInfo");
}
if (_serializationData.ContainsValue("componentSpecificSerializationInfo"))
{
// The main serialization dataDelivery stores the UI orderInfo.
_componentSpecificSerializationInfo = _serializationData.GetValue <SerializationInfoEx>("componentSpecificSerializationInfo");
}
}
//_server = new Arbiter.TransportIntegrationServer(_platformUri);
//Arbiter.AddClient(_server);
GeneralHelper.FireAndForget(delegate()
{// LoadFromFile components.
// Registering of components is better done outside the lock,
// since components may launch requests to platform at initializations.
_isLoading = true;
// Components are stored in the PlatformComponents database, they are being serialized and the entire object is
// persisted in the DB, as well as the type information for it and a reference to the platform instance it belongs to.
List <long> failedSerializationsIds = new List <long>();
List <PlatformComponent> components = PersistenceHelper.SelectSerializedType <PlatformComponent>(
new MatchExpression("PlatformId", this.Id), "Data", null, failedSerializationsIds);
SortedList <int, List <PlatformComponent> > componentsByLevel = GetComponentsByLevel(components);
GatherMandatoryComponents(componentsByLevel);
foreach (int level in componentsByLevel.Keys)
{// Register lower level components first.
foreach (PlatformComponent component in componentsByLevel[level])
{
if (DoRegisterComponent(component, true) == false &&
component.Id.HasValue && ComponentDeserializationFailedEvent != null)
{
ComponentDeserializationFailedEvent(component.Id.Value, component.GetType().Name);
}
}
}
// Handle failed deserializations.
foreach (int id in failedSerializationsIds)
{
string typeName = "Unknown";
try
{// Extract the type of this entry.
List <object[]> result = _persistenceHelper.SelectColumns <PlatformComponent>(
new MatchExpression("Id", id), new string[] { "Type" }, 1);
Type type = Type.GetType(result[0][0].ToString());
if (type != null)
{
typeName = type.Name;
}
}
catch (Exception ex)
{
SystemMonitor.Error("Failed to extract type information [" + ex.Message + "].");
}
if (ComponentDeserializationFailedEvent != null)
{
ComponentDeserializationFailedEvent(id, typeName);
}
}
_isLoading = false;
});
return(true);
}
/// <summary>
/// This is called only one time in the lifetime of the source (just after creation, before very first init).
/// It allows it to read dataDelivery from settings, if it needs to.
/// </summary>
/// <param name="dataDelivery"></param>
/// <returns></returns>
protected override bool OnSetInitialState(PlatformSettings data)
{
return(true);
}
protected override bool OnSetInitialState(PlatformSettings data)
{
if (base.OnSetInitialState(data) == false)
{
return false;
}
_filesFolder = data.GetMappedFolder("FilesFolder");
return true;
}
/// <summary>
///
/// </summary>
public static ADOPersistenceHelper CreatePersistenceHelper(PlatformSettings settings)
{
ADOPersistenceHelper helper = new ADOPersistenceHelper();
if (helper.Initialize(settings.GetMappedFolder("PersistencePath")) == false)
{
return null;
}
helper.SetupTypeMapping(typeof(Platform), "Platforms", null);
helper.SetupTypeMapping(typeof(PlatformComponent), "PlatformComponents", null);
return helper;
}
