status-go/vendor/github.com/vacp2p/mvds/state/state.go

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// Package state contains everything related to the synchronization state for MVDS.
package state
// RecordType is the type for a specific record, either `OFFER`, `REQUEST` or `MESSAGE`.
type RecordType int
const (
OFFER RecordType = iota
REQUEST
MESSAGE
)
// State is a struct used to store a records [state](https://github.com/status-im/bigbrother-specs/blob/master/data_sync/mvds.md#state).
type State struct {
Type RecordType
SendCount uint64
SendEpoch int64
// GroupID is optional, thus nullable
GroupID *GroupID
PeerID PeerID
MessageID MessageID
}
type SyncState interface {
Add(newState State) error
Remove(id MessageID, peer PeerID) error
All(epoch int64) ([]State, error)
Map(epoch int64, process func(State) State) error
}