Develop Reference

Making a security definition request to FIX adapter

I am trying to make a request (Security Definition Request) to FIX Adapter using the following method. This is an application level call and I manually invoke this method whenever there is a successful connection to FIX Adapter.
WHen i run this method i get a "Field not found for tag:49" exception message. However SecurityDefinitionRequest class doesnt allow me to set Tag 49 (SenderCompId) to it.
First of all is this the right way to make a SecurityDefinitionRequest? I tried looking at QuickFix/N docs but they dont explain how to make such request.
http://quickfixn.org/tutorial/sending-messages.html
Infact i havent seen any articles so far in the internet. Any suggestions?
public void ToApp(Message message, SessionID sessionId)
{
var request =
new SecurityDefinitionRequest()
{
SecurityReqID = new SecurityReqID("1"),
SecurityID = new SecurityID("5"),
SecurityRequestType = new SecurityRequestType(3),
SecurityType = new SecurityType("FUT")
};
request.SetField(new SenderCompID("217"));
Session.SendToTarget(request);
}
The constructed message looks like this
8=FIX.4.29=3735=c48=549=217167=FUT320=1321=310=003

I'm going to suggest:
SessionId currentSessionId = new QuickFix.SessionID("FIX4.2", "217","CBOE");
securityDefinitionRequest.SetSessionID(currentSessionId );

Activation error occured while trying to get instance of type Database, error occurring only when connection string is created dynamically

I have a piece of code (.NET Framework 4.5.2, Enterprise Library 5.0.505.0) where I need to connect to a SQL Server database. However, the DB name may keep changing depending on user's requirement. So, I have the following piece of code to write the connection string dynamically to the app.config file.
public void CreateNewConnectionStringInConfig(string initialCatalog)
{
SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder();
builder.DataSource = ConfigurationManager.AppSettings["Data Source"];
builder.PersistSecurityInfo = true;
builder.InitialCatalog = initialCatalog; //This is the DB name
builder.UserID = ConfigurationManager.AppSettings["User ID"];
builder.Password = ConfigurationManager.AppSettings["Password"];
// Get the application configuration file.
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
// Create a connection string element.
ConnectionStringSettings csSettings = new ConnectionStringSettings("UserSelectedConnectionString", builder.ConnectionString, "System.Data.SqlClient");
// Get the connection strings section.
ConnectionStringsSection csSection = config.ConnectionStrings;
// Add the new element.
csSection.ConnectionStrings.Add(csSettings);
// Save the configuration file.
config.Save(ConfigurationSaveMode.Modified);
// Refresh the section so the new configuration can be re-read
ConfigurationManager.RefreshSection("connectionStrings");
}
I checked and the connection string is getting created fine in the vshost.exe.Config file while debugging. However, when I am trying to create the Database object, I am getting an error. The code used to create the DB object is as shown below.
public class MyDac
{
private readonly Database _db;
public MyDac()
{
DatabaseProviderFactory factory = new DatabaseProviderFactory();
_db = factory.Create("UserSelectedConnectionString");
}
}
I am getting the following error while trying to create the _db object.
Activation error occured while trying to get instance of type Database, key "UserSelectedConnectionString"
Microsoft.Practices.ServiceLocation.ActivationException: Activation error occured while trying to get instance of type Database, key "UserSelectedConnectionString" ---> Microsoft.Practices.Unity.ResolutionFailedException: Resolution of the dependency failed, type = "Microsoft.Practices.EnterpriseLibrary.Data.Database", name = "UserSelectedConnectionString".
Exception occurred while: while resolving.
Exception is: InvalidOperationException - The type Database does not have an accessible constructor.
Things that I have tried:
1) Upgrading the Enterprise Library version to 6.0.0.0 resolves the issue but that is not an option for me. I have to keep it to version 5.0.505.0.
2) When I hard code the connection string in the App.config file from before hand (rather than writing it during run time), the app works fine. However, I can't do that in real life because the database name will keep on changing.
Any help will be much appreciated. Thanks!

I changed my code as shown below and that started working. However, I do not have any explanation for it:
public class MyDac
{
private readonly Database _db;
public MyDac()
{
_db = new SqlDatabase("UserSelectedConnectionString");
}
}

Different connection string for output or trigger

Here i have a webjob function using servicebus triggers and outputs. I'd like to set a different configuration for output and input.
public static void OnPush(
[ServiceBusTrigger("%PushProcessor.InputTopicName%", "%PushProcessor.InputTopicSubscriptionName%", AccessRights.Listen)]
BrokeredMessage message,
[ServiceBus("%PushProcessor.OutputTopicName%", AccessRights.Send)]
out BrokeredMessage output
)
I see in latest api that one can control the job host with service bus extensions.
JobHostConfiguration config = new JobHostConfiguration
{
StorageConnectionString = ConfigHelpers.GetConfigValue("AzureWebJobsStorage"),
DashboardConnectionString = ConfigHelpers.GetConfigValue("AzureWebJobsDashboard"),
NameResolver = new ByAppSettingsNameResolver()
};
config.UseServiceBus(new ServiceBusConfiguration
{
MessageOptions = new OnMessageOptions {
MaxConcurrentCalls = 2,
AutoRenewTimeout = TimeSpan.FromMinutes(1),
AutoComplete = true,
},
ConnectionString = ConfigHelpers.GetConfigValue("InputServiceBusConnectionString"),
});
Unfortunately i see no control for the connection string for the output. I'd like a different connection string (different namespace/access rights) to be used for inputs versus outputs.
Perhaps the api can support registering named jobhostconfigurations to a jobhost, and referring to that name in the attributes for the trigger/output. Anyways if there is a way to do this let me know.

Yes, also in the latest beta1 release you'll see that there is now a ServiceBusAccountAttribute that you can apply along with the ServiceBusTrigger/ServiceBus attributes. For example:
public static void Test(
[ServiceBusTriggerAttribute("test"),
ServiceBusAccount("testaccount")] BrokeredMessage message)
{
. . .
}
We've done the same for all the other attribute types (Queue/Blob/Table) via StorageAccountAttribute. These account attributes can be applied at the class/method/parameter level. Please give this new feature a try and let us know how it works for you. Also, see the release notes for more details.

NLog filter by LogLevel as MappedDiagnosticsContext

Based on the answer here: How Thread-Safe is NLog? I have created a Logger and added two MappedDiagnosticsContext to NLog:
NLog.MappedDiagnosticsContext.Set("Module", string.Format("{0}.{1}", module.ComputerName, module.ModuleType));
NLog.MappedDiagnosticsContext.Set("ModuleCoreLogLevel", string.Format("LogLevel.{0}", module.CoreLogLevel));
I can successfully use the "Module" Context in the NLog config (programmatically) to generate the file name the logger should log to:
${{when:when=length('${{mdc:Module}}') == 0:inner=UNSPECIFIED}}${{when:when=length('${{mdc:Module}}') > 0:inner=${{mdc:Module}}}}.txt
This logs e.g. all messages with a "Module" context of "Test" to a filename called Module.txt
I now want to be able to set the LogLevel for the different Modules using this way, and only Log messages which correspond to this LogLevel (or higher)
I am trying to do this through filters, this means, on the LoggingRule I am trying to add a filter:
rule92.Filters.Add(new ConditionBasedFilter { Condition = "(level < '${mdc:ModuleCoreLogLevel}')", Action = FilterResult.IgnoreFinal });
This however does not seem to filter messages.
If I have for example a message which is emitted using Logger.Trace(), and the LogLevel on "ModuleCoreLogLevel" is set to LogLevel.Debug, I can still the Message in the resulting LogFile.

I solved this by doing this for each level:
rule92.Filters.Add(new ConditionBasedFilter { Condition = "(equals('${mdc:ModuleCoreLogLevel}', 'LogLevel.Trace') and level < LogLevel.Trace)", Action = FilterResult.IgnoreFinal });

Enterprise library 4.1 logging error?

I am using Enterprise library 4.1 logging. I am getting compile error at 'EnterpriseLibraryContainer'. EnterpriseLibraryContainer doesn't work for 4.1 version?
public LogWriter defaultWriter;
public Logging()
{
// Resolve the default LogWriter object from the container.
// The actual concrete type is determined by the configuration settings.
defaultWriter = EnterpriseLibraryContainer.Current.GetInstance<LogWriter>();
}
[Description("Logging to EverViewer and RollingFile with Write method of a LogWriter")]
public void LogWriter(string message, string title, EventLogEntryType eventType)
{
// Check if logging is enabled before creating log entries.
if (defaultWriter.IsLoggingEnabled())
{
// Create a string array (or List<>) containing the categories.
string[] logCategories = new string[] { "General" };
LogEntry logEntry = new LogEntry();
logEntry.Message = message;
logEntry.Categories = logCategories;
logEntry.Priority = 10;
logEntry.EventId = 9005;
logEntry.Severity = ConvertEventType(eventType);
logEntry.Title = title;
defaultWriter.Write(logEntry);
}
}

EnterpriseLibraryContainer was introduced with Enterprise Library 5 so is not available with Enterprise Library 4.1.
Try replacing that code with the following to get the default writer:
public Logging()
{
// Resolve the default LogWriter object from the container.
// The actual concrete type is determined by the configuration settings.
defaultWriter = new LogWriterFactory().Create();
}

Are you by any chance targeting the .NET 4 Client Profile instead of the full .NET 4?