/usr/share/gocode/src/github.com/coreos/go-log/log/fields.go is in golang-coreos-log-dev 0.0~git20140508-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright 2013, CoreOS, Inc. All rights reserved.
//
// 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.
//
// author: David Fisher <ddf1991@gmail.com>
// based on previous package by: Cong Ding <dinggnu@gmail.com>
import (
"os"
"path"
"runtime"
"strings"
"sync/atomic"
"time"
)
type Fields map[string]interface{}
func (logger *Logger) fieldValues() Fields {
now := time.Now()
fields := Fields{
"prefix": logger.prefix, // static field available to all sinks
"seq": logger.nextSeq(), // auto-incrementing sequence number
"start_time": logger.created, // start time of the logger
"time": now.Format(time.StampMilli), // formatted time of log entry
"full_time": now, // time of log entry
"rtime": time.Since(logger.created), // relative time of log entry since started
"pid": os.Getpid(), // process id
"executable": logger.executable, // executable filename
}
if logger.verbose {
setVerboseFields(fields)
}
return fields
}
func (logger *Logger) nextSeq() uint64 {
return atomic.AddUint64(&logger.seq, 1)
}
func setVerboseFields(fields Fields) {
callers := make([]uintptr, 10)
n := runtime.Callers(3, callers) // starts in (*Logger).Log or similar
callers = callers[:n]
for _, pc := range callers {
f := runtime.FuncForPC(pc)
if !strings.Contains(f.Name(), "logger.(*Logger)") {
fields["funcname"] = f.Name()
pathname, lineno := f.FileLine(pc)
fields["lineno"] = lineno
fields["pathname"] = pathname
fields["filename"] = path.Base(pathname)
return
}
}
}
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