forked from hyperledger-archives/burrow
/
metadata.go
47 lines (40 loc) · 1.63 KB
/
metadata.go
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// Copyright 2017 Monax Industries Limited
//
// 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 logging
import (
"time"
kitlog "github.com/go-kit/kit/log"
"github.com/go-stack/stack"
"github.com/hyperledger/burrow/logging/structure"
"github.com/hyperledger/burrow/logging/types"
)
const (
// To get the Caller information correct on the log, we need to count the
// number of calls from a log call in the code to the time it hits a kitlog
// context: [log call site (5), Info/Trace (4), MultipleChannelLogger.Log (3),
// kitlog.Context.Log (2), kitlog.bindValues (1) (binding occurs),
// kitlog.Caller (0), stack.caller]
infoTraceLoggerCallDepth = 5
)
var defaultTimestampUTCValuer kitlog.Valuer = func() interface{} {
return time.Now()
}
func WithMetadata(infoTraceLogger types.InfoTraceLogger) types.InfoTraceLogger {
return infoTraceLogger.With(structure.TimeKey, defaultTimestampUTCValuer,
structure.CallerKey, kitlog.Caller(infoTraceLoggerCallDepth),
structure.TraceKey, TraceValuer())
}
func TraceValuer() kitlog.Valuer {
return func() interface{} { return stack.Trace().TrimBelow(stack.Caller(infoTraceLoggerCallDepth - 1)) }
}