func (db *stateStore) State(id types.Id, key string) ([]byte, types.Error) {
db.RLock()
defer db.RUnlock()
bucket := db.buckets[id]
if bucket == nil {
return nil, types.InvalidStateError("bucket '" + id.String() + "' doesn't exist")
}
bucket.RLock()
defer bucket.RUnlock()
value := bucket.states[key]
return value, nil
}
func (db *stateStore) States(id types.Id) ([]interfaces.State, types.Error) {
db.RLock()
defer db.RUnlock()
bucket := db.buckets[id]
if bucket == nil {
return nil, types.InvalidStateError("bucket '" + id.String() + "' doesn't exist")
}
bucket.RLock()
defer bucket.RUnlock()
states := make([]interfaces.State, 0, len(bucket.states))
for key, value := range bucket.states {
states = append(states, state{key, value})
}
return states, nil
}
func (db *stateStore) SetState(id types.Id, key string, value []byte) ([]byte, types.Error) {
db.RLock()
defer db.RUnlock()
bucket := db.buckets[id]
if bucket == nil {
return nil, types.InvalidStateError("bucket '" + id.String() + "' doesn't exist")
}
bucket.Lock()
defer bucket.Unlock()
oldValue := bucket.states[key]
if len(value) == 0 {
delete(bucket.states, key)
} else {
bucket.states[key] = value
}
return oldValue, nil
}
