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log.go
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log.go
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// MIT License
// Copyright (c) 2019 gonethopper
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// * @Author: ankye
// * @Date: 2019-06-14 14:40:51
// * @Last Modified by: ankye
// * @Last Modified time: 2019-06-14 14:40:51
package log
import (
"bytes"
"fmt"
"github.com/airkits/nethopper/utils"
)
// ILog log Interface
type ILog interface {
// ParseConfig read config from conf object
ParseConfig(conf *Config) error
// InitLogger init logger
InitLogger(conf *Config) error
// SetLevel atomic set level value
SetLevel(level int32) error
// GetLevel atomic get level value
GetLevel() int32
// Fatal system is unusable
Fatal(v ...interface{}) error
// Error error conditions
Error(v ...interface{}) error
// Warning warning conditions
Warning(v ...interface{}) error
// Info informational messages
Info(v ...interface{}) error
// Debug debug-level messages
Debug(v ...interface{}) error
// WriteLog write log to file, return immediately if not meet the conditions
WriteLog(msg []byte, count int32) error
// CanLog check log status
CanLog(msgSize int32, count int32) bool
// Close and flush
Close() error
}
// LogLevelPrefix level format to string
var LogLevelPrefix = [DEBUG + 1]string{" [FATAL] ", " [ERROR] ", " [TRACE] ", " [WARNING] ", " [INFO] ", " [DEBUG] "}
// FormatLog format log and return string
// if len(v) > 1 ,format = v[0]
func FormatLog(level int32, v ...interface{}) string {
if level < FATAL || level > DEBUG {
level = FATAL
}
var buf bytes.Buffer
buf.WriteString(utils.TimeYMDHIS())
buf.WriteString(LogLevelPrefix[level])
format := v[0].(string)
if len(v) > 1 {
buf.WriteString(fmt.Sprintf(format, v[1:]...))
} else {
buf.WriteString(format)
}
buf.WriteString("\n")
return buf.String()
}