// NextOp is part of the resolver.Resolver interface. func (s *commandsResolver) NextOp( localState resolver.LocalState, remoteState remotestate.Snapshot, opFactory operation.Factory, ) (operation.Operation, error) { if len(remoteState.Commands) == 0 { return nil, resolver.ErrNoOperation } id := remoteState.Commands[0] op, err := opFactory.NewCommands(s.commands.GetCommand(id)) if err != nil { return nil, err } commandCompleted := func() { s.commands.RemoveCommand(id) s.commandCompleted(id) } return &commandCompleter{op, commandCompleted}, nil }