Important notes on the code

Log messages

Keep your message in common format: <problem>: <problematic value/description>
If you have to write text, single quote values in your sentence.

For logging, there are printf-like macros LOG_(E|C|W|M|I|D).

LOG_E (ERROR):
- All messages, which lead to immediate abort and are caused by a programming error. The program needs patching and the error is not user recoverable.
- e.g.: Switching over an enum, LOG_E would go into the default case.
LOG_C (CRITICAL):
- The program cannot continue to work. It is used in the wrong manner or some outer conditions are not met.
- e.g.: -config parameter value is unreadable file
LOG_W (WARNING):
- Something is not in shape, but it's recoverable.
- e.g.: A value is not parsable in the config file, which will default.
LOG_M (MESSAGE):
- Important info, which informs about the state.
- e.g.: An empty notification does get removed immediately.
LOG_I (INFO):
- Mostly unneccessary info, but important to debug (as the user) some use cases.
- e.g.: print the notification contents after arriving
LOG_D (DEBUG):
- Only important during development or tracing some bugs (as the developer).