forked from go-kit/kit
-
Notifications
You must be signed in to change notification settings - Fork 0
/
inspection.go
53 lines (42 loc) · 1.29 KB
/
inspection.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
// Package inspection provides means to inspect cargos.
package inspection
import (
"github.com/go-kit/kit/examples/shipping/cargo"
)
// EventHandler provides means of subscribing to inspection events.
type EventHandler interface {
CargoWasMisdirected(*cargo.Cargo)
CargoHasArrived(*cargo.Cargo)
}
// Service provides cargo inspection operations.
type Service interface {
// InspectCargo inspects cargo and send relevant notifications to
// interested parties, for example if a cargo has been misdirected, or
// unloaded at the final destination.
InspectCargo(id cargo.TrackingID)
}
type service struct {
cargos cargo.Repository
events cargo.HandlingEventRepository
handler EventHandler
}
// TODO: Should be transactional
func (s *service) InspectCargo(id cargo.TrackingID) {
c, err := s.cargos.Find(id)
if err != nil {
return
}
h := s.events.QueryHandlingHistory(id)
c.DeriveDeliveryProgress(h)
if c.Delivery.IsMisdirected {
s.handler.CargoWasMisdirected(c)
}
if c.Delivery.IsUnloadedAtDestination {
s.handler.CargoHasArrived(c)
}
s.cargos.Store(c)
}
// NewService creates a inspection service with necessary dependencies.
func NewService(cargos cargo.Repository, events cargo.HandlingEventRepository, handler EventHandler) Service {
return &service{cargos, events, handler}
}