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Process

About the FixProcess Class

FixProcess is an important singleton class in QXFIX Engine that enables you to:

  1. Provide a FIX session persistence layer for your application
  2. Customize the copyright information displayed in your application
  3. Customize date format and log file name format (when using File Logger)
  4. Interface your application with external systems for real-time message analysis

For further information or customization queries, contact:
qxfix@QuantXpress.com

FAQs

How do I provide a FIX session persistence layer to my Initiator or Acceptor application?

To provide a FIX session persistence layer, initialize the FixProcess class once.

QXFIX Engine supports both:

  • File-based persistence
  • Database persistence

This single instance works across the entire application.

Example

// Create a FIX Persistence connection string
string dbName = "QXFix";
string hostName = Dns.GetHostName();

string dbConnectionString = string.Format(
    "Data Source={0};Initial Catalog={1};Integrated Security=SSPI;Pooling=true;Min Pool Size=0;Max Pool Size=100;Connect Timeout=30",
    hostName,
    dbName
);

// Database persistence (MSSQL)
FixDBConfig dbConfig = new FixDBConfig(eDBProvider.SqlServer, dbConnectionString);
FixProcess.Instance.Init(dbConfig);

// File-based persistence
FixDBConfig fileConfig = new FixDBConfig(eDBProvider.File);
FixProcess.Instance.Init(fileConfig);
How do I customize the copyright information?

The default copyright text refers to QuantXpress Technologies.

You can override it as follows:

FixProcess.Instance.CopyRightText = "ABC Copyright...";
How do I interface with an external application for real-time message analysis?

You can attach a plugin-based Session Alert Queue Handler to FixProcess.

This allows access to:

  • Inbound messages
  • Outbound messages
  • Errors and warnings
  • Session states (logon, logout, disconnect, etc.)

For implementation details, contact:

qxfix@QuantXpress.com

How do I set the log file name format?

Default log file name format:

<SenderCompID>.<TargetCompID> [dd.MM.yyyy HH.MM.SS.fff].log

Example

  • SenderCompID = Initiator1
  • TargetCompID = QXAcceptor
  • Time = 25 June 2008, 17:53:00.718

Output:

Initiator1.QXAcceptor [25.06.2008 17.53.00.718].log

Customization

public void SetLogFileAttributes(
    LogFileSTSeparator logFileSTSeparator,
    DateFormat logFileDateFormat,
    DateSeparator logFileDateSeparator
)

Supported separators:

  • Dot (.)
  • Hash (#)
  • Space ( )
  • Underscore (_)

Default separator = dot (.)

Note

The separator does not apply to the date portion of the log file.

How do I set the date format and separator in log entries?

Use:

public void SetLogFileAttributes(
    LogFileSTSeparator logFileSTSeparator,
    eDateFormat logFileDateFormat,
    DateSeparator logFileDateSeparator
)

Supported Date Formats

  • ddMMyyyy
  • MMddyyyy
  • yyyyddMM
  • yyyyMMdd

Default = ddMMyyyy

Supported Date Separators

  • Hyphen (-)
  • Dot (.)
  • Slash (/)
  • None

Default = hyphen (-)