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