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formatter.go
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formatter.go
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//
// Copyright 2019 Insolar Technologies GmbH
//
// 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 logadapter
import (
"fmt"
"github.com/insolar/insolar/insolar"
"reflect"
)
type FormatFunc func(...interface{}) string
type FormatfFunc func(string, ...interface{}) string
func GetDefaultLogMsgFormatter() MsgFormatConfig {
return MsgFormatConfig{
Sformat: fmt.Sprint,
Sformatf: fmt.Sprintf,
}
}
type MsgFormatConfig struct {
Sformat FormatFunc
Sformatf FormatfFunc
}
func (v MsgFormatConfig) TryLogObject(a ...interface{}) (insolar.LogObjectMarshaller, string) {
if len(a) == 1 {
switch v := a[0].(type) {
case nil: // the most obvious case(s)
break
case string: // the most obvious case(s)
return nil, v
case insolar.LogObjectMarshaller:
return v, ""
default:
vt := reflect.ValueOf(v)
if vt.Kind() == reflect.Struct && len(vt.Type().Name()) == 0 {
return GetInlineLogObjectMarshaller(vt), ""
}
}
}
return nil, v.Sformat(a...)
}
func GetInlineLogObjectMarshaller(v reflect.Value) insolar.LogObjectMarshaller {
return defaultLogObjectMarshaller{v}
}
type defaultLogObjectMarshaller struct {
v reflect.Value
}
func (v defaultLogObjectMarshaller) MarshalLogObject(insolar.LogObjectWriter) string {
return fmt.Sprintf("%+v", v.v)
}