Tiny Logger

A lightweight logger library implementing standard logging methods with the addition of some colors.
Logging with this library can be achieved in two main ways:

1. Using the Package Level Logger
2. Instantiating and using a new Logger struct

Both of them implement the same features and methods, it just depends on whether you need a new Logger instance struct or not.

Package Logger

The Package logger does not need to be instantiated and is unique when using the library.

logs.Warn("my warning test") // stdout: 'WARN: my warning test'
logs.Info("my", "into", "test", 2) // stdout: 'INFO: my info test 2'
logs.Debug("hey", "check this", "debug") // stdout: 'DEBUG: hey check this debug'
logs.Error("here is the error") // stderr: 'ERROR: here is the error'
logs.Log(colors.Red, "Here is a Red Msg") // stdout: 'Here is a Red Msg' (Colored Red)

Struct Logger

To instantiate a new Logger struct you just need to call the logs.NewLogger() method, it will return a pointer to the newly created Logger.

logger := logs.NewLogger()
logger.Warn("my warning test") // stdout: 'WARN: my warning test'
logger.Info("my", "into", "test", 2) // stdout: 'INFO: my info test 2'
logger.Debug("hey", "check this", "debug") // stdout: 'DEBUG: hey check this debug'
logger.Error("here is the error") // stderr: 'ERROR: here is the error'
logger.Log(colors.Red, "Here is a Red Msg") // stdout: 'Here is a Red Msg' (Colored Red)

Log Levels

Every Logger (Package one included) will have a Log Level property reference.
This property will tell the Loggers which message categories we want to actually print, based on an internal hierarchy.
The logging levels hierarchy is organized as follows:

Error: 0
Warn:  1
Info:  2
Debug: 3

Every Logger when firstly generated will have the Log Level set to Debug by default, therefore all the logs will be printed to the output since Debug is the highest in the hierarchy.
Setting the Logger Log Level to a lower value, let's say Warn will cause the Logger to print only Warn and Error messages excluding the categories that are higher of the set Log Level, Info and Debug for this example.

The Log Level can be set in two ways:

1. Using the method
   • Package Logger: logs.SetLogLvl(WarnLvlName)
   • Logger Struct: logs.NewLogger().SetLogLvl(WarnLvlName)
2. Setting an ENV variable reference. In this case the Logger will retrieve the Log Level from the specified environment variable when calling the SetLogLvlEnvVariable() method.
   • Package Logger: SetLogLvlEnvVariable("MY_LOGLVL_ENV_VAR_NAME")
   • Logger Struct: logs.NewLogger().SetLogLvlEnvVariable("MY_LOGLVL_ENV_VAR_NAME")