groupch Channel Processing

Still within the run function, a perpetual for loop awaits order group details to be sent to a channel named groupch. When order/group details are placed onto that channel, the shouldBid method is called.

Eventually the result of calling shouldBid will be placed onto the shouldBidCh provoking further upstream order processing. But prior to review upstream steps we will detail the shouldBid function logic.

        case result := <-groupch:
            // Group details fetched.

            groupch = nil
            o.log.Info("group fetched")

            if result.Error() != nil {
                o.log.Error("fetching group", "err", result.Error())
                break loop
            }

            res := result.Value().(dtypes.Group)
            group = &res

            shouldBidCh = runner.Do(func() runner.Result {
                return runner.NewResult(o.shouldBid(group))
            })