FORK.md

glog (fork)

This fork adds the following features:

• writes logstash JSON messages asynchronuously to a provided io.Writer.
• convencience methods for DEBUG and TRACE level logging.

Additional flags

-logstash=false

Logs are also written to the Writer that is setup by SetLogstashWriter.

Setup the logstash destination

glog.SetLogstashWriter(aWriter)

Provide an io.Writer to write the JSON representation of log events. This can a file, an UDP connection or any other implementation.

Passing extra fields to log messages (will be part of @fields)

	ExtraFields["instance"] = "ps34"
	ExtraFields["role"] = "webservice"
	ExtraFields["application"] = "yourappname"

Sample

	{"@source_host":"MacErnest"
	,"@timestamp":"2014-03-21T10:52:05.495118455+01:00"
	,"@fields":{"level":"INFO","threadid":02628,"file":"glog_logstash_test.go","line":60,"instance":"ps34"
	,"role":"webservice","application":"daxy"
	}
	,"@message":"hello"
	}				

Examples of severity levels DEBUG(=10) and TRACE(=100)

	glog.Info("Always printed")
	glog.Infof("Printed on %v", time.Now())
	
	glog.Debug("Printed only if at least on DEBUG level")
	
	if glog.DebugEnabled() {
		glog.Debugf("Printed only if at least on %s level", "DEBUG")
	}

	glog.Trace("Printed only is at least on TRACE level")
	
	if glog.TraceEnabled() {
		glog.Tracef("Printed only if at least on %s level", "TRACE")
	}		

---

glog is copyright 2013 Google Inc. All Rights Reserved.

glog modifications are copyright 2013 Ernest Micklei. All Rights Reserved.