2019-08-06 22:04:21 +00:00
|
|
|
package deals
|
|
|
|
|
|
|
|
import (
|
|
|
|
"github.com/ipfs/go-cid"
|
|
|
|
"github.com/ipfs/go-datastore"
|
|
|
|
cbor "github.com/ipfs/go-ipld-cbor"
|
|
|
|
"golang.org/x/xerrors"
|
|
|
|
)
|
|
|
|
|
|
|
|
type StateStore struct {
|
|
|
|
ds datastore.Datastore
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
func (st *StateStore) Begin(i cid.Cid, state interface{}) error {
|
2019-08-06 22:04:21 +00:00
|
|
|
k := datastore.NewKey(i.String())
|
|
|
|
has, err := st.ds.Has(k)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if has {
|
2019-08-06 23:17:41 +00:00
|
|
|
// TODO: uncomment after deals work
|
|
|
|
//return xerrors.Errorf("Already tracking state for %s", i)
|
2019-08-06 22:04:21 +00:00
|
|
|
}
|
2019-08-07 18:57:48 +00:00
|
|
|
|
|
|
|
b, err := cbor.DumpObject(state)
|
2019-08-06 22:04:21 +00:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
return st.ds.Put(k, b)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (st *StateStore) End(i cid.Cid) error {
|
|
|
|
k := datastore.NewKey(i.String())
|
|
|
|
has, err := st.ds.Has(k)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if !has {
|
|
|
|
return xerrors.Errorf("No state for %s", i)
|
|
|
|
}
|
|
|
|
return st.ds.Delete(k)
|
|
|
|
}
|
|
|
|
|
|
|
|
// When this gets used anywhere else, migrate to reflect
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
func (st *StateStore) MutateMiner(i cid.Cid, mutator func(*MinerDeal) error) error {
|
2019-08-06 22:04:21 +00:00
|
|
|
return st.mutate(i, minerMutator(mutator))
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
func minerMutator(m func(*MinerDeal) error) func([]byte) ([]byte, error) {
|
2019-08-06 22:04:21 +00:00
|
|
|
return func(in []byte) ([]byte, error) {
|
2019-08-07 18:57:48 +00:00
|
|
|
var deal MinerDeal
|
|
|
|
err := cbor.DecodeInto(in, &deal)
|
2019-08-06 22:04:21 +00:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
if err := m(&deal); err != nil {
|
2019-08-06 22:04:21 +00:00
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
return cbor.DumpObject(deal)
|
2019-08-06 22:04:21 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
func (st *StateStore) MutateClient(i cid.Cid, mutator func(*ClientDeal) error) error {
|
2019-08-06 22:04:21 +00:00
|
|
|
return st.mutate(i, clientMutator(mutator))
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
func clientMutator(m func(*ClientDeal) error) func([]byte) ([]byte, error) {
|
2019-08-06 22:04:21 +00:00
|
|
|
return func(in []byte) ([]byte, error) {
|
2019-08-07 18:57:48 +00:00
|
|
|
var deal ClientDeal
|
|
|
|
err := cbor.DecodeInto(in, &deal)
|
2019-08-06 22:04:21 +00:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
if err := m(&deal); err != nil {
|
2019-08-06 22:04:21 +00:00
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2019-08-07 18:57:48 +00:00
|
|
|
return cbor.DumpObject(deal)
|
2019-08-06 22:04:21 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
func (st *StateStore) mutate(i cid.Cid, mutator func([]byte) ([]byte, error)) error {
|
|
|
|
k := datastore.NewKey(i.String())
|
|
|
|
has, err := st.ds.Has(k)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if !has {
|
|
|
|
return xerrors.Errorf("No state for %s", i)
|
|
|
|
}
|
|
|
|
|
|
|
|
cur, err := st.ds.Get(k)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
mutated, err := mutator(cur)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
return st.ds.Put(k, mutated)
|
|
|
|
}
|