Log Severities 
The following are the different levels of severity, in ascending order:
Definition of Severity Levels
|
Severity |
Value |
Details |
|
MIN |
0 |
Minimum restriction |
|
DEBUG |
100 |
For debugging purpose, with extensive and low level information |
|
PATH |
200 |
For tracing the execution flow, e.g. used in the context of entering and leaving a method, looping and branching operations |
|
INFO |
300 |
Informational text, mostly for echoing what has been performed |
|
WARNING |
400 |
Application can recover from anomaly, and fulfill the desired task, but need attention from developer/operator |
|
ERROR |
500 |
Application can recover from error, but cannot fulfill desired task due to the error |
|
FATAL |
600 |
Application cannot recover from error, and the severe situation causes fatal termination |
|
MAX |
700 |
Maximum restriction |
There are 2 more useful severity keywords that will totally enable and disable tracing/logging:
|
Severity |
Value |
Details |
|
ALL |
0 |
Output messages of all severity |
|
NONE |
701 |
No messages will be logged |