CoreandServices.book - Ocean - Schlumberger

PetrelLogger Class
application configuration file petrel.exe.config. The category, in this case, defaults
to General. The log file contents from the code above would be:
4/18/2006 2:12:50 PM General [USER_NAME petrel.exe] This is an info
message.
4/18/2006 2:12:50 PM General [USER_NAME petrel.exe] This is a warning
message.
4/18/2006 2:12:51 PM General [USER_NAME petrel.exe] This is an error
message.
4/18/2006 2:12:51 PM General [USER_NAME petrel.exe] This is an error
message with exception.
System.DivideByZeroException: Attempted to divide by zero.
at PetrelLoggerDemo.LoggerDemo.InvokeSimpleCore(Arguments
argumentPackage) in D:\...\LoggerDemo.cs:line 55
The methods inherited from CoreLogger provide an additional string parameter that
defines a category for the message. The category allows the logging configuration to
group messages and output them to various log files that are defined in the Petrel
configuration file. If you provide a category for the message when using PetrelLogger
methods, then you must have the category defined as a categorySource with a
listener in the config file for the message to be written. Consider the following example
in which the category is defined as TestMessage.
using Slb.Ocean.Petrel;
string category = “MyCategory”;
int v1 = 100;
int v2 = 0;
try
{
int val = v1 / v2;
}
catch (DivideByZeroException e)
{
// Write message and categorize
PetrelLogger.Error (“Error trying to divide value.”, category);
// Write message, category, and exception
PetrelLogger.Error (“Error trying to divide value.”, category, e);
}
5-246 Ocean Application Development Framework 2008.1
Schlumberger Private