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log.go
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log.go
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/*
Copyright (C) 2022-2023 ApeCloud Co., Ltd
This file is part of KubeBlocks project
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package util
import (
"flag"
"fmt"
"path/filepath"
"strings"
"time"
"github.com/spf13/pflag"
"k8s.io/klog/v2"
"github.com/apecloud/kbcli/pkg/types"
)
func EnableLogToFile(fs *pflag.FlagSet) error {
logFile, err := getCliLogFile()
if err != nil {
return err
}
setFlag := func(kv map[string]string) {
for k, v := range kv {
_ = fs.Set(k, v)
}
}
if klog.V(1).Enabled() {
// if log is enabled, write log to standard output and log file
setFlag(map[string]string{
"alsologtostderr": "true",
"logtostderr": "false",
"log-file": logFile,
})
} else {
// if log is not enabled, enable it and write log to file
setFlag(map[string]string{
"v": "1",
"logtostderr": "false",
"alsologtostderr": "false",
"log-file": logFile,
})
}
return nil
}
func getCliLogFile() (string, error) {
homeDir, err := GetCliLogDir()
if err != nil {
return "", err
}
return filepath.Join(homeDir, fmt.Sprintf("%s-%s.log", types.DefaultLogFilePrefix, time.Now().Format("2006-01-02"))), nil
}
// AddKlogFlags adds flags from k8s.io/klog
// marks the flags as hidden to avoid showing them in help
func AddKlogFlags(fs *pflag.FlagSet) {
local := flag.NewFlagSet("klog", flag.ExitOnError)
klog.InitFlags(local)
local.VisitAll(func(f *flag.Flag) {
f.Name = strings.ReplaceAll(f.Name, "_", "-")
if fs.Lookup(f.Name) != nil {
return
}
newFlag := pflag.PFlagFromGoFlag(f)
newFlag.Hidden = true
fs.AddFlag(newFlag)
})
}