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badger.go
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badger.go
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package db
import (
"github.com/bluest-eel/common/util"
"github.com/bluest-eel/state/components/config"
"github.com/dgraph-io/badger"
log "github.com/sirupsen/logrus"
)
// BadgerConnector ...
type BadgerConnector struct {
ConnType string
Conn *badger.DB
}
// NewBadgerConnector ...
func NewBadgerConnector(cfg *config.Config) (*BadgerConnector, error) {
conn, err := badger.Open(badger.DefaultOptions(cfg.DB.Badger.Directory))
if err != nil {
log.Fatal(err)
}
connector := &BadgerConnector{
ConnType: BADGER,
Conn: conn,
}
return connector, err
}
// Close closes the connection to the database
func (c *BadgerConnector) Close() error {
return c.Conn.Close()
}
// DBType returns the database type
func (c *BadgerConnector) DBType() string {
return c.ConnType
}
// Get ...
func (c *BadgerConnector) Get(key string) (*KV, error) {
decoded := &KV{}
err := c.Conn.View(func(txn *badger.Txn) error {
item, err := txn.Get([]byte(key))
if err != nil {
return err
}
valCopy, err := item.ValueCopy(nil)
if err != nil {
return err
}
err = util.GOBDecode(valCopy, decoded)
if err != nil {
return err
}
return nil
})
if err != nil {
log.Error(err)
}
return decoded, err
}
// Set ...
func (c *BadgerConnector) Set(input *KV) error {
err := c.Conn.Update(func(txn *badger.Txn) error {
encoded, err := util.GOBEncode(input)
if err != nil {
log.Error(err)
}
err = txn.Set([]byte(input.Key), encoded)
if err != nil {
log.Error(err)
}
return err
})
return err
}