In our last installment we found our hero investigating the tracing changes found in Connector/Net 6.2.  This time we’ll take a closer look at the format of the trace data and how developers can use that information to write new and interesting trace listeners.

Understanding the plumbing

The first thing we need to understand is a little about how the trace messages are routed.  The main method we are interested in is TraceSource.TraceEvent.  Here is the signature.

public void TraceEvent(
    TraceEventType eventType,
    int id,
    string format,
    params Object[] args
)

All the other TraceSource methods like TraceInformation eventually boil down to a call to …

For years, Connector/Net has been a key part of any MySQL & .NET developer’s toolbox.  Tracing is also a key part of a developer’s life and Connector/Net has always output trace messages. 

This first post is a review of .NET tracing systems and how we changed our trace output.  The second post will cover how developers can use the new tracing format to develop new applications.

Tracing in .NET 1.x

.NET shipped with a very simple tracing system.  You have a static class named Trace that has static methods such as Write and WriteLine.  An application can use code like the following to output a message to the trace log. 

Now that we have output our message, how do we direct it somewhere?  You do that with listeners.  There are a few standard listeners included in the framework (ConsoleTraceListener, XmlTraceListener, EventLogTraceListener) but you …

In our last installment we found our hero investigating the tracing changes found in Connector/Net 6.2.  This time we’ll take a closer look at the format of the trace data and how developers can use that information to write new and interesting trace listeners.

Understanding the plumbing

The first thing we need to understand is a little about how the trace messages are routed.  The main method we are interested in is TraceSource.TraceEvent.  Here is the signature.

public void TraceEvent(
    TraceEventType eventType,
    int id,
    string format,
    params Object[] args)

All the other TraceSource methods like TraceInformation eventually boil down to a call to …

For years, Connector/Net has been a key part of any MySQL & .NET developer’s toolbox.  Tracing is also a key part of a developer’s life and Connector/Net has always output trace messages.

This first post is a review of .NET tracing systems and how we changed our trace output.  The second post will cover how developers can use the new tracing format to develop new applications.

Tracing in .NET 1.x

.NET shipped with a very simple tracing system.  You have a static class named Trace that has static methods such as Write and WriteLine.  An application can use code like the following to output a message to the trace log.

Now that we have output our message, how do we direct it somewhere?  You do that with listeners.  There are a few standard listeners included in the framework (ConsoleTraceListener, XmlTraceListener, EventLogTraceListener) but you are free to …

MySQL Connector/Net 6.2.2, a new version of the all-managed .NET driver for MySQL has been released.This is our latest GA release and is suitable for use in all scenarios against servers ranging from version 4.1 to 5.4!

It is now available in source and binary form from [http://dev.mysql.com/downloads/connector/net/6.2.html] and mirror sites
(note that not all mirror sites may be up to date at this point of time - if you can't find this version on some mirror, please try again later or choose another download site.)

The new features or changes in this release are:

• Connection pool cleanup timer.  We now utilize a timer that cleans idle connections that are no longer connected every 3 minutes
• We are now using stream and TCP-based timeouts to handle command timeouts.  This is more inline with what …

MySQL Connector/Net 6.2.2, a new version of the all-managed .NET driver for MySQL has been released.This is our latest GA release and is suitable for use in all scenarios against servers ranging from version 4.1 to 5.4!

It is now available in source and binary here and mirror sites (note that not all mirror sites may be up to date at this point of time – if you can’t find this version on some mirror, please try again later or choose another download site.)

The new features or changes in this release are:

• Connection pool cleanup timer.  We now utilize a timer that cleans idle connections that are no longer connected every 3 minutes
• We are now using stream and TCP-based timeouts to handle command timeouts.  This is more inline with what SqlClient does and should be more reliable than our old timer …

MySQL Connector/Net 6.1.3, a new version of the all-managed .NET driver for MySQL has been released. This is our latest GA release and is suitable for use in all scenarios against servers ranging from version 4.1 to 5.4!

It is now available in source and binary form from [http://dev.mysql.com/downloads/connector/net/6.1.html] and mirror sites (note that not all mirror sites may be up to date at this point of time - if you can't find this version on some mirror, please try again later or choose another download site.)

This release builds on the cool new features introduced with 6.1.2 and adds the following changes/bugfixes.

• fixed session state provider table definition to allow more than 64K per-session data (bug#47339)
• fixed compilation problem in NativeDriver inside ExecuteDirect  (bug #47354)
• fixed …

MySQL Connector/Net 6.2.1, a new version of the all-managed .NET driver
for MySQL has been released. This is a beta release and is intended to
introduce you to the new features and enhancements we are planning. This
release should not be used in a production environment.

It is now available in source and binary form from
[http://dev.mysql.com/downloads/connector/net/6.2.html] and mirror sites
(note that not all mirror sites may be up to date at this point of time
- if you can't find this version on some mirror, please try again later
or choose another download site.)

The new features or changes in this release are:

• fixed SessionProvider to be compatible with 4.x MySQL, replaced TIMESTAMPDIFF with TIME_TO_SEC (bug#47219)
• implemented support for client SSL certificates …

MySQL Connector/Net 6.1.3, a new version of the all-managed .NET driver for MySQL has been released. This is our latest GA release and is suitable for use in all scenarios against servers ranging from version 4.1 to 5.4!

It is now available in source and binary form from [http://dev.mysql.com/downloads/connector/net/6.1.html] and mirror sites (note that not all mirror sites may be up to date at this point of time – if you can’t find this version on some mirror, please try again later or choose another download site.)

This release builds on the cool new features introduced with 6.1.2 and adds the following changes/bugfixes.

• fixed session state provider table definition to allow more than 64K per-session data (bug#47339)
• fixed compilation problem in NativeDriver inside ExecuteDirect  (bug #47354)
…

MySQL Connector/Net 6.2.1, a new version of the all-managed .NET driver
for MySQL has been released. This is a beta release and is intended to
introduce you to the new features and enhancements we are planning. This
release should not be used in a production environment.

It is now available in source and binary form from
[http://dev.mysql.com/downloads/connector/net/6.2.html] and mirror sites
(note that not all mirror sites may be up to date at this point of time
- if you can’t find this version on some mirror, please try again later
or choose another download site.)

The new features or changes in this release are:

• fixed SessionProvider to be compatible with 4.x MySQL, replaced TIMESTAMPDIFF with TIME_TO_SEC (bug#47219)
• implemented support for client SSL certificates …