Files
ziti/controller/db/db.go
T
2020-03-19 13:26:09 -04:00

100 lines
2.2 KiB
Go

/*
Copyright NetFoundry, 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
https://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 db
import (
"errors"
"fmt"
"github.com/michaelquigley/pfxlog"
"go.etcd.io/bbolt"
"os"
"time"
)
type Db struct {
db *bbolt.DB
}
func Open(path string) (*Db, error) {
db, err := bbolt.Open(path, 0600, nil)
if err != nil {
return nil, fmt.Errorf("unable to open controller database [%s] (%s)", path, err)
}
if err := db.Update(createRoots); err != nil {
return nil, err
}
return &Db{db: db}, nil
}
func (db *Db) Close() error {
return db.db.Close()
}
func (db *Db) Update(fn func(tx *bbolt.Tx) error) error {
return db.db.Update(fn)
}
func (db *Db) View(fn func(tx *bbolt.Tx) error) error {
return db.db.View(fn)
}
func (db *Db) RootBucket(tx *bbolt.Tx) (*bbolt.Bucket, error) {
ziti := tx.Bucket([]byte("ziti"))
if ziti == nil {
return nil, errors.New("db missing 'ziti' root")
}
return ziti, nil
}
func (db *Db) Snapshot(tx *bbolt.Tx) error {
path := db.db.Path()
path += "-" + time.Now().Format("20060102-150405")
_, err := os.Stat(path)
if err != nil {
if !os.IsNotExist(err) {
return err
}
} else {
pfxlog.Logger().Infof("bolt db backup already made: %v", path)
}
file, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
return err
}
defer file.Close()
_, err = tx.WriteTo(file)
if err != nil {
pfxlog.Logger().Infof("created bolt db backup: %v", path)
}
return err
}
func createRoots(tx *bbolt.Tx) error {
if ziti, err := tx.CreateBucketIfNotExists([]byte("ziti")); err == nil {
if _, err := ziti.CreateBucketIfNotExists([]byte("services")); err != nil {
return err
}
if _, err := ziti.CreateBucketIfNotExists([]byte("routers")); err != nil {
return err
}
}
return nil
}