ducky/subscriptions
ducky/subscriptions/api/context_helpers.go
Return errors from responses in client. When the client makes a request, non-200 responses _are not_ considered errors. So we need to check the response.Errors property, and if it has errors, _then_ we consider the request to have an error. To make this happen, we created an httpErrors type that fulfills the error interface and just wraps the response Errors property. Then callers can type-cast it and interrogate it.
| paddy@4 | 1 package api |
| paddy@4 | 2 |
| paddy@4 | 3 import ( |
| paddy@4 | 4 "errors" |
| paddy@4 | 5 |
| paddy@4 | 6 "code.secondbit.org/ducky/subscriptions.hg" |
| paddy@4 | 7 |
| paddy@4 | 8 "golang.org/x/net/context" |
| paddy@4 | 9 ) |
| paddy@4 | 10 |
| paddy@4 | 11 const ( |
| paddy@4 | 12 subscriptionStoreKey = "SubscriptionStore" |
| paddy@4 | 13 stripeKey = "Stripe" |
| paddy@4 | 14 ) |
| paddy@4 | 15 |
| paddy@4 | 16 var ( |
| paddy@4 | 17 ErrSubscriptionStoreNotSet = errors.New("SubscriptionStore not set") |
| paddy@4 | 18 ErrStripeClientNotSet = errors.New("Stripe not set") |
| paddy@4 | 19 ) |
| paddy@4 | 20 |
| paddy@4 | 21 func getSubscriptionStore(c context.Context) (subscriptions.SubscriptionStore, error) { |
| paddy@4 | 22 store := c.Value(subscriptionStoreKey) |
| paddy@4 | 23 if store == nil { |
| paddy@4 | 24 return nil, ErrSubscriptionStoreNotSet |
| paddy@4 | 25 } |
| paddy@4 | 26 if s, ok := store.(subscriptions.SubscriptionStore); ok { |
| paddy@4 | 27 return s, nil |
| paddy@4 | 28 } |
| paddy@4 | 29 return nil, ErrSubscriptionStoreNotSet |
| paddy@4 | 30 } |
| paddy@4 | 31 |
| paddy@4 | 32 func WithSubscriptionStore(store subscriptions.SubscriptionStore, c context.Context) context.Context { |
| paddy@4 | 33 return context.WithValue(c, subscriptionStoreKey, store) |
| paddy@4 | 34 } |
| paddy@4 | 35 |
| paddy@4 | 36 func getStripeClient(c context.Context) (subscriptions.Stripe, error) { |
| paddy@4 | 37 stripe := c.Value(stripeKey) |
| paddy@4 | 38 if stripe == nil { |
| paddy@4 | 39 return subscriptions.Stripe{}, ErrStripeClientNotSet |
| paddy@4 | 40 } |
| paddy@4 | 41 if s, ok := stripe.(subscriptions.Stripe); ok { |
| paddy@4 | 42 return s, nil |
| paddy@4 | 43 } |
| paddy@4 | 44 return subscriptions.Stripe{}, ErrStripeClientNotSet |
| paddy@4 | 45 } |
| paddy@4 | 46 |
| paddy@4 | 47 func WithStripeClient(stripe subscriptions.Stripe, c context.Context) context.Context { |
| paddy@4 | 48 return context.WithValue(c, stripeKey, stripe) |
| paddy@4 | 49 } |