Package log implements a simple structured logging API inspired by Logrus, designed with centralization in mind. Read more on Medium.
- apexlogs – handler for Apex Logs
- cli – human-friendly CLI output
- discard – discards all logs
- es – Elasticsearch handler
- graylog – Graylog handler
- json – JSON output handler
- kinesis – AWS Kinesis handler
- level – level filter handler
- logfmt – logfmt plain-text formatter
- memory – in-memory handler for tests
- multi – fan-out to multiple handlers
- papertrail – Papertrail handler
- text – human-friendly colored output
- delta – outputs the delta between log calls and spinner
Example using the Apex Logs handler.
package main import ( "errors" "time" "github.com/apex/log" ) func main() { ctx := log.WithFields(log.Fields{ "file": "something.png", "type": "image/png", "user": "tobi", }) for range time.Tick(time.Millisecond * 200) { ctx.Info("upload") ctx.Info("upload complete") ctx.Warn("upload retry") ctx.WithError(errors.New("unauthorized")).Error("upload failed") ctx.Errorf("failed to upload %s", "img.png") } }
