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package state
import (
"context"
"encoding/json"
"errors"
"flux/core"
"github.com/cockroachdb/pebble/v2"
)
type pebbleStateValue struct {
backend *PebbleStateBackend
stateID uint8
}
func (p *pebbleStateValue) Update(ctx context.Context, newVal any) (any, error) {
key := p.backend.deserialize(p.stateID)
// convert newVal to []byte raw
v, err := json.Marshal(newVal)
if err != nil {
return nil, err
}
err = p.backend.db.Set(key, v, pebble.NoSync)
if err != nil {
return nil, err
}
return newVal, nil
}
func (p *pebbleStateValue) Value(ctx context.Context) (any, error) {
key := p.backend.deserialize(p.stateID)
v, closer, err := p.backend.db.Get(key)
if err != nil {
if errors.Is(err, pebble.ErrNotFound) {
return nil, nil
}
return nil, err
}
defer closer.Close()
res := core.GetBuffer(len(v))
copy(res, v)
return res, nil
}
func (p *pebbleStateValue) Clear(ctx context.Context) error {
key := p.backend.deserialize(p.stateID)
return p.backend.db.Delete(key, pebble.NoSync)
}
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