Clone this repo:
  1. 861d094 glog: don't hold mutex when sync'ing (#68) by chressie · 3 months ago master v1.2.1
  2. b256bbe glog: add context variants to most log functions by Chressie Himpel · 7 months ago v1.2.0
  3. bcf3184 glog/internal/logsink: add logsink tests by Chressie Himpel · 7 months ago
  4. 6b9d7f7 glog: populate symlinks -log_link directory (#64) by chressie · 11 months ago v1.1.2
  5. 03ad3c2 glog: use os.Stderr directly for writing to stderr (#62) by chressie · 1 year, 3 months ago v1.1.1

glog

PkgGoDev

Leveled execution logs for Go.

This is an efficient pure Go implementation of leveled logs in the manner of the open source C++ package glog.

By binding methods to booleans it is possible to use the log package without paying the expense of evaluating the arguments to the log. Through the -vmodule flag, the package also provides fine-grained control over logging at the file level.

The comment from glog.go introduces the ideas:

Package glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup. It provides the functions Info, Warning, Error, Fatal, plus formatting variants such as Infof. It also provides V-style loggingcontrolled by the -v and -vmodule=file=2 flags.

Basic examples:

glog.Info("Prepare to repel boarders")
	
glog.Fatalf("Initialization failed: %s", err)

See the documentation for the V function for an explanation of these examples:

if glog.V(2) {
	glog.Info("Starting transaction...")
}
glog.V(2).Infoln("Processed", nItems, "elements")

The repository contains an open source version of the log package used inside Google. The master copy of the source lives inside Google, not here. The code in this repo is for export only and is not itself under development. Feature requests will be ignored.

Send bug reports to golang-nuts@googlegroups.com.