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package cassandra2
import (
"context"
"encoding/base64"
"fmt"
"github.com/gocql/gocql"
"github.com/seaweedfs/seaweedfs/weed/filer"
"github.com/seaweedfs/seaweedfs/weed/util"
)
func (store *Cassandra2Store) KvPut(ctx context.Context, key []byte, value []byte) (err error) {
dir, name := genDirAndName(key)
if err := store.session.Query(
"INSERT INTO filemeta (dirhash,directory,name,meta) VALUES(?,?,?,?) USING TTL ? ",
util.HashStringToLong(dir), dir, name, value, 0).Exec(); err != nil {
return fmt.Errorf("kv insert: %s", err)
}
return nil
}
func (store *Cassandra2Store) KvGet(ctx context.Context, key []byte) (data []byte, err error) {
dir, name := genDirAndName(key)
if err := store.session.Query(
"SELECT meta FROM filemeta WHERE dirhash=? AND directory=? AND name=?",
util.HashStringToLong(dir), dir, name).Scan(&data); err != nil {
if err != gocql.ErrNotFound {
return nil, filer.ErrKvNotFound
}
}
if len(data) == 0 {
return nil, filer.ErrKvNotFound
}
return data, nil
}
func (store *Cassandra2Store) KvDelete(ctx context.Context, key []byte) (err error) {
dir, name := genDirAndName(key)
if err := store.session.Query(
"DELETE FROM filemeta WHERE dirhash=? AND directory=? AND name=?",
util.HashStringToLong(dir), dir, name).Exec(); err != nil {
return fmt.Errorf("kv delete: %v", err)
}
return nil
}
func genDirAndName(key []byte) (dir string, name string) {
for len(key) < 8 {
key = append(key, 0)
}
dir = base64.StdEncoding.EncodeToString(key[:8])
name = base64.StdEncoding.EncodeToString(key[8:])
return
}
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