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span.go
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span.go
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// Copyright 2019 Anapaya Systems
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package log
import (
"github.com/opentracing/opentracing-go"
)
// Span is a logger that attaches all logs to the span.
type Span struct {
Logger Logger
Span opentracing.Span
}
// Debug logs to the logger and span.
func (s Span) Debug(msg string, ctx ...interface{}) {
s.Logger.Debug(msg, ctx...)
s.spanLog("debug", msg, ctx...)
}
// Info logs to the logger and span.
func (s Span) Info(msg string, ctx ...interface{}) {
s.Logger.Info(msg, ctx...)
s.spanLog("info", msg, ctx...)
}
// Error logs to the logger and span.
func (s Span) Error(msg string, ctx ...interface{}) {
s.Logger.Error(msg, ctx...)
s.spanLog("error", msg, ctx...)
}
func (s Span) Enabled(lvl Level) bool {
return s.Logger.Enabled(lvl)
}
// New creates a new logger with the context attached.
func (s Span) New(ctx ...interface{}) Logger {
return Span{
Logger: s.Logger.New(ctx...),
Span: s.Span,
}
}
func (s Span) spanLog(lvl, msg string, ctx ...interface{}) {
if s.Span == nil {
return
}
s.Span.LogKV(append([]interface{}{"level", lvl, "event", msg}, ctx...)...)
}