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redis_database.go
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/
redis_database.go
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/*
Nging is a toolbox for webmasters
Copyright (C) 2018-present Wenhui Shen <swh@admpub.com>
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 <https://www.gnu.org/licenses/>.
*/
package redis
import (
"errors"
"strconv"
"github.com/gomodule/redigo/redis"
)
// DatabaseList 获取数据库列表
func (r *Redis) DatabaseList() ([]*DBInfo, error) {
reply, err := redis.Strings(r.conn.Do("CONFIG", "GET", "databases"))
if err != nil {
return nil, err
}
infos, err := r.info(`keyspace`)
if err != nil {
return nil, err
}
if len(infos) < 1 {
return nil, errors.New(`failed to query keyspace`)
}
info := infos[0]
dbInfos := map[int64]*DBInfo{}
for _, attr := range info.Attrs {
d := attr.ParseDBInfo()
if d == nil {
continue
}
dbInfos[d.DB] = d
}
if len(reply) > 1 {
num, err := strconv.ParseInt(reply[1], 10, 64)
if err != nil {
return nil, err
}
ids := make([]*DBInfo, 0, num)
var id int64
for ; id < num; id++ {
d, y := dbInfos[id]
if !y {
d = &DBInfo{DB: id}
}
ids = append(ids, d)
}
return ids, nil
}
return []*DBInfo{}, err
}
func (r *Redis) Flush(db string) (string, error) {
var (
rep interface{}
err error
)
if db != `all` {
rep, err = r.conn.Do("FLUSHDB")
} else {
rep, err = r.conn.Do("FLUSHALL")
}
return redis.String(rep, err)
}