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kratos/pkg/log/stdout.go

53 lines
1.3 KiB

package log
import (
"context"
"os"
"time"
)
const defaultPattern = "%L %d-%T %f %M"
var _defaultStdout = NewStdout()
// StdoutHandler stdout log handler
type StdoutHandler struct {
render Render
}
// NewStdout create a stdout log handler
func NewStdout() *StdoutHandler {
return &StdoutHandler{render: newPatternRender(defaultPattern)}
}
// Log stdout loging, only for developing env.
func (h *StdoutHandler) Log(ctx context.Context, lv Level, args ...D) {
d := toMap(args...)
// add extra fields
addExtraField(ctx, d)
d[_time] = time.Now().Format(_timeFormat)
h.render.Render(os.Stderr, d)
os.Stderr.Write([]byte("\n"))
}
// Close stdout loging
func (h *StdoutHandler) Close() error {
return nil
}
// SetFormat set stdout log output format
// %T time format at "15:04:05.999"
// %t time format at "15:04:05"
// %D data format at "2006/01/02"
// %d data format at "01/02"
// %L log level e.g. INFO WARN ERROR
// %f function name and line number e.g. model.Get:121
// %i instance id
// %e deploy env e.g. dev uat fat prod
// %z zone
// %S full file name and line number: /a/b/c/d.go:23
// %s final file name element and line number: d.go:23
// %M log message and additional fields: key=value this is log message
func (h *StdoutHandler) SetFormat(format string) {
h.render = newPatternRender(format)
}