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// Copyright (C) 2014 Space Monkey, Inc.
//
// 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 spacelog
import (
"fmt"
"strconv"
"strings"
)
type LogLevel int32
const (
Debug LogLevel = 10
Info LogLevel = 20
Notice LogLevel = 30
Warning LogLevel = 40
Error LogLevel = 50
Critical LogLevel = 60
// syslog has Alert
// syslog has Emerg
DefaultLevel = Notice
)
// String returns the log level name in short form
func (l LogLevel) String() string {
switch l.Match() {
case Critical:
return "CRIT"
case Error:
return "ERR"
case Warning:
return "WARN"
case Notice:
return "NOTE"
case Info:
return "INFO"
case Debug:
return "DEBUG"
default:
return "UNSET"
}
}
// String returns the log level name in long human readable form
func (l LogLevel) Name() string {
switch l.Match() {
case Critical:
return "critical"
case Error:
return "error"
case Warning:
return "warning"
case Notice:
return "notice"
case Info:
return "info"
case Debug:
return "debug"
default:
return "unset"
}
}
// Match returns the greatest named log level that is less than or equal to
// the receiver log level. For example, if the log level is 43, Match() will
// return 40 (Warning)
func (l LogLevel) Match() LogLevel {
if l >= Critical {
return Critical
}
if l >= Error {
return Error
}
if l >= Warning {
return Warning
}
if l >= Notice {
return Notice
}
if l >= Info {
return Info
}
if l >= Debug {
return Debug
}
return 0
}
// LevelFromString will convert a named log level to its corresponding value
// type, or error if both the name was unknown and an integer value was unable
// to be parsed.
func LevelFromString(str string) (LogLevel, error) {
switch strings.ToLower(str) {
case "crit", "critical":
return Critical, nil
case "err", "error":
return Error, nil
case "warn", "warning":
return Warning, nil
case "note", "notice":
return Notice, nil
case "info":
return Info, nil
case "debug":
return Debug, nil
}
val, err := strconv.ParseInt(str, 10, 32)
if err == nil {
return LogLevel(val), nil
}
return 0, fmt.Errorf("Invalid log level: %s", str)
}
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