forked from lileio/logr
/
logr.go
177 lines (148 loc) · 4.47 KB
/
logr.go
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package logr
import (
"context"
"fmt"
"os"
opentracing "github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/log"
zipkintracing "github.com/openzipkin-contrib/zipkin-go-opentracing"
"github.com/sanity-io/litter"
"github.com/sirupsen/logrus"
)
const TraceKey = "traceId"
type Logr struct {
ctx context.Context
Logger FieldLogr
logger *logrus.Logger
}
type FieldLogr interface {
Debugf(format string, args ...interface{})
Infof(format string, args ...interface{})
Printf(format string, args ...interface{})
Warnf(format string, args ...interface{})
Warningf(format string, args ...interface{})
Errorf(format string, args ...interface{})
Fatalf(format string, args ...interface{})
Panicf(format string, args ...interface{})
Debug(args ...interface{})
Info(args ...interface{})
Print(args ...interface{})
Warn(args ...interface{})
Warning(args ...interface{})
Error(args ...interface{})
Fatal(args ...interface{})
Panic(args ...interface{})
}
// SetLevelFromEnv is a convienience function to set the log level from
// env vars such as those on Kubernetes or Docker hosts
func SetLevelFromEnv() {
lvl := os.Getenv("LOG_LEVEL")
switch lvl {
case "DEBUG":
logrus.SetLevel(logrus.DebugLevel)
case "INFO":
logrus.SetLevel(logrus.InfoLevel)
case "WARN":
logrus.SetLevel(logrus.WarnLevel)
case "ERROR":
logrus.SetLevel(logrus.ErrorLevel)
default:
logrus.SetLevel(logrus.InfoLevel)
}
}
// WithCtx will return a logrus logger that will log Zipkin when logging.
func WithCtx(ctx context.Context) *Logr {
lg := logrus.StandardLogger()
return &Logr{ctx: ctx, Logger: applyContext(ctx, lg)}
}
// NewWithLogger creates a new Logr from an existing logrus logger.
func NewWithLogger(logger *logrus.Logger) *Logr {
return &Logr{logger: logger}
}
func applyContext(ctx context.Context, logger *logrus.Logger) FieldLogr {
fields := logrus.Fields{}
span := opentracing.SpanFromContext(ctx)
if span != nil {
zs, ok := span.Context().(zipkintracing.SpanContext)
if ok {
traceID := zs.TraceID.String()
fields[TraceKey] = traceID
}
}
return logger.WithFields(fields)
}
func (l *Logr) WithContext(ctx context.Context) *Logr {
l.ctx = ctx
l.Logger = applyContext(ctx, l.logger)
return l
}
// LogToTrace logs the msg to the tracing span with the level
func (l *Logr) LogToTrace(level, msg string) {
span := opentracing.SpanFromContext(l.ctx)
if span != nil {
span.LogFields(log.String("event", msg))
}
}
// LogErrorToTrace logs the msg to the tracing span with the level
func (l *Logr) LogErrorToTrace(level, msg string) {
span := opentracing.SpanFromContext(l.ctx)
if span != nil {
span.LogFields(log.String("stack", msg))
span.SetTag("error", "true")
}
}
func (l *Logr) Debugf(format string, args ...interface{}) {
l.LogToTrace("DEBUG", fmt.Sprintf(format, args...))
l.Logger.Debugf(format, args...)
}
func (l *Logr) Infof(format string, args ...interface{}) {
l.LogToTrace("INFO", fmt.Sprintf(format, args...))
l.Logger.Infof(format, args...)
}
func (l *Logr) Printf(format string, args ...interface{}) {
l.LogToTrace("PRINT", fmt.Sprintf(format, args...))
l.Logger.Printf(format, args...)
}
func (l *Logr) Warnf(format string, args ...interface{}) {
l.LogToTrace("WARN", fmt.Sprintf(format, args...))
l.Logger.Warnf(format, args...)
}
func (l *Logr) Warningf(format string, args ...interface{}) {
l.LogToTrace("WARNING", fmt.Sprintf(format, args...))
l.Logger.Warningf(format, args...)
}
func (l *Logr) Errorf(format string, args ...interface{}) {
l.LogErrorToTrace("ERROR", fmt.Sprintf(format, args...))
l.Logger.Errorf(format, args...)
}
func (l *Logr) Debug(args ...interface{}) {
l.LogToTrace("DEBUG", fmt.Sprint(args...))
l.Logger.Debug(args...)
}
func (l *Logr) DebugObject(name string, object interface{}) {
span := opentracing.SpanFromContext(l.ctx)
if span != nil {
span.LogFields(log.Object(name, object))
}
l.Logger.Debug(name + ": " + litter.Sdump(object))
}
func (l *Logr) Info(args ...interface{}) {
l.LogToTrace("INFO", fmt.Sprint(args...))
l.Logger.Info(args...)
}
func (l *Logr) Print(args ...interface{}) {
l.LogToTrace("PRINT", fmt.Sprint(args...))
l.Logger.Print(args...)
}
func (l *Logr) Warn(args ...interface{}) {
l.LogToTrace("WARN", fmt.Sprint(args...))
l.Logger.Warn(args...)
}
func (l *Logr) Warning(args ...interface{}) {
l.LogToTrace("WARNING", fmt.Sprint(args...))
l.Logger.Warning(args...)
}
func (l *Logr) Error(args ...interface{}) {
l.LogErrorToTrace("ERROR", fmt.Sprint(args...))
l.Logger.Error(args...)
}