Enterprise Library Test Guide - Willy .Net

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Enterprise Library Test Guide
Code test case Implemented? Feature that is implemented
Verify that the application
block uses WMI and the event
log to monitor errors during
database operations when
WMI and the event log are
enabled.
Yes
For example, the Database.OpenConnection
method uses WMI, the event log, and performance
counters when the connection fails.
This is shown in the following code example.
protected DbConnection OpenConnection()
{
try
{
connection = CreateConnection();
connection.Open();
}
catch (Exception e)
{
instrumentationProvider.FireConnectio
nFailedEvent(ConnectionStringNoCreden
tials, e);
throw;
}
}
The FireConnectionFailedEvent method
raises the connectionFailed event. The ConnectionFailed
method consumes this event
and notifies WMI, logs the exception to the
event log, and increments the Connections
failed/sec performance counter. This is
shown in the following code example.
[InstrumentationConsumer("ConnectionF
ailed")]
public void ConnectionFailed(…)
{
if (PerformanceCountersEnabled) connectionFailedCounter.Increment();
if (WmiEnabled) System.Management.
Instrumentation.Instrumentation.
Fire(new ConnectionFailedEvent(…);
if (EventLoggingEnabled)
{
…
EventLog.WriteEntry(GetEventSourceN
ame(), entryText, EventLogEntryType.
Error);
}
}