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")
}
}
