log

Package log provides an easy to use, yet highly configurable Logger.

Usage

In its simplest form, a log message can be created by just:

import "udico.de/util/log"
log.INFO.Msg("Hello log!")

This will use the default Logger without further configuration and produce something like this to stdout:

20251121-113125.038747 INFO: Hello log!

If stdout targets an interactive terminal, the output will be colored by the default formatter. More on Formatters below.

Customizing a Logger

Of course, you can customize a Logger

log.DefaultLogger.SetLevel(log.TRACE)
// .SetFormatter(...)
// .SetAutotrace(...)

package mypackage

import "udico.de/util/log"

var logger = log.Logger("mylog").SetLevel(log.DEBUG)

Autotrace

Log levels

udilog provides the following log levels:

Level	Name (Short)	Description
0	SILENT (SLT)	No log at all. not even panics. We just don't care about the end of the world.
1	PANIC (PNC)	Events which cannot be handled gracefully. Program execution will terminate.
2	FATAL (FTL)	Indicates a situation which requires user interaction to resolve.
3	ERROR (ERR)	Error conditions which may result in malfunction.
4	WARN (WRN)	Signifies potential issues that may lead to errors or unexpected behavior in the future if not addressed.
5	NOTICE (NOT)	Notice logs are normal but significant information.
6	INFO (INF)	Indicates normal, informational messages.
7	DEBUG (DBG)	Is intended for logging detailed information for debugging purposes.
8	TRACE (TRC)	Is the most detailed level of log output. Might spam your logs.

Note: logging a PANIC will also issue a panic and thereby terminate the program.

Configuration

stub

Formatters

stub

Targets

stub

gRPC

You can also use a Logger for gRPC logging.