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// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package logger
import (
"fmt"
"io"
"log"
"os"
"github.com/ethereum/go-ethereum/common"
)
func openLogFile(datadir string, filename string) *os.File {
path := common.AbsolutePath(datadir, filename)
file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
panic(fmt.Sprintf("error opening log file '%s': %v", filename, err))
}
return file
}
func New(datadir string, logFile string, logLevel int) LogSystem {
var writer io.Writer
if logFile == "" {
writer = os.Stdout
} else {
writer = openLogFile(datadir, logFile)
}
var sys LogSystem
sys = NewStdLogSystem(writer, log.LstdFlags, LogLevel(logLevel))
AddLogSystem(sys)
return sys
}
func NewJSONsystem(datadir string, logFile string) LogSystem {
var writer io.Writer
if logFile == "-" {
writer = os.Stdout
} else {
writer = openLogFile(datadir, logFile)
}
var sys LogSystem
sys = NewJsonLogSystem(writer)
AddLogSystem(sys)
return sys
}
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