OpenTestSystem.Otx.Extensions.Logging Namespace Reference

Writing logging messages to a logging resource More...

Namespaces
namespace	Actions
	Lists all ActionRealisation extensions.
namespace	DataTypes
	Data types, see also Core data types.
namespace	Terms
	Lists all Terms.
namespace	Variables
	Variable Access.

Detailed Description

Writing logging messages to a logging resource

The Logging library provides functions that help one can write log messages in log-resources (log files). To filter the log messages called Severity and log levels are used.
The severity level assigned each log message, depending on the severity of a group, see table. The highest severity is FATAL and TRACE is the lowest.

Overview of the severity levels (grades)

Serverity	Descrition
FATAL (Highest)	Serious error which requires the immediate termination of the process.
ERROR	Other runtime errors or unexpected conditions.
WARN	Situations that are undesirable or unexpected, but not really wrong.
INFO	Interesting runtime events.
DEBUG	Detailed information on the flow through the sequence.
TRACE (Lowest)	Even more detailed information.

The log level determines whether a message is written to the log resource or not. The following rule applies: If the log level is greater than or equal to the severity of the message is written the message, see table. Example: If the log level is set to ERROR, only messages with severity FATAL and ERROR are written to the log file. All other messages are ignored.

Overview of log levels (thresholds)

Serverity	Descrition
OFF (Lowest)	Logging is off, Nothing will be logged.
FATAL	Messages with severity FATAL will be logged.
ERROR	Messages with severity ERROR or above will be logged.
WARN	Messages with severity WARN or above will be logged.
INFO	Messages with severity INFO or above will be logged.
DEBUG	Messages with severity DEBUG or above will be logged.
TRACE	Messages with severity TRACE or above will be logged.
ALL (Highest)	All messages will be logged (this is the default setting).

The log level is generally set within the drain system, but can also be adjusted by an activity within a process. Similarly, the name of the log file is configured in the execution system.