Classification
| Name |
Logging
|
| Short Description |
Provides functionality which allows for explicitly writing log-messages to a logging-resource.
|
| Class |
OTX Extension
|
| Base Extension |
-
|
| Pre-Conditions |
-
|
| Specified by |
ISO 13209-3
|
Introduction
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.
Actions
Data Types
