Logging
This guide describes how to configure Fuzio logging.
The root cause of many issues can be detected by analyzing Fuzio log messages.
If you see an issue or some unexpected behavior, please configure Fuzio to print all log messages to
a file or System.err, reproduce the issue, and provide us with the collected
log messages.
By default, Fuzio is configured to print all log messages with the ERROR level to System.err.
Levels
Fuzio supports the following logging levels: DEBUG < INFO < WARNING < ERROR. By default, the library prints
only messages with ERROR logging level, the rest is ignored.
Use OFF level to turn off logging completely, and ALL level to log all the messages.
You can change the default logging level via fuzio.logging.level system property or Fuzio Logging API.
Example: Setting Logging Level
Use the following system property to enable DEBUG logging:
-Dfuzio.logging.level=DEBUG
Or configure it in the code:
System.setProperty("fuzio.logging.level", "DEBUG");
System.setProperty("fuzio.logging.level", "DEBUG")
Or use Fuzio Logging API:
import tech.fuzio.logging.Level;
import tech.fuzio.logging.Logger;
...
Logger.level(Level.DEBUG);
import tech.fuzio.logging.Level
import tech.fuzio.logging.Logger
...
Logger.level(Level.DEBUG)
Logging to a file
To print all log messages to a file please use the fuzio.logging.file system property.
Use the following system property to configure the log file path:
-Dfuzio.logging.file=fuzio.log
Or configure it in the code:
System.setProperty("fuzio.logging.file", "fuzio.log");
System.setProperty("fuzio.logging.file", "fuzio.log")
The value of the property may be both an absolute or relative path to a file.
If the library can’t create a log file, it fallbacks to the default behavior and prints an error message
with the exception stack trace to System.err.
