ducky/devices

Paddy 2015-12-22 Parent:c24a6c5fcd8c

18:b2fdf827758e Go to Latest

ducky/devices/context.go

Add endpoint for retrieving devices. Add an endpoint for retrieving devices, either as a list or by ID. Stub endpoints for updating and deleting devices., along with TODOs marking them as things to still be completed. (Right now, accessing those endpoints is an insta-panic.) Simplify our handleCreateDevices by returning StatusUnauthorized if AuthUser fails, so we can reserve StatusForbidden for when auth succeeds but access is still denied. Also, delay the instantiation and allocation of a Response variable until we're actually going to use it. Create a handleGetDevices handler that authenticates the user, and if no ID is set, returns a list of all their Devices. If one or more IDs are set, only those Devices are returned. If ScopeViewPushToken is one of the scopes associated with the request, the push tokens for each Device will be included in the response. Otherwise, they will be omitted.

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1 package devices
2
3 import (
4 "errors"
5
6 "golang.org/x/net/context"
7 )
8
9 const (
10 storerKey = "code.secondbit.org/ducky/devices.hg#Storer"
11 )
12
13 var (
14 // ErrNoStorerSet is returned when the Context has no Storer set in it.
15 ErrNoStorerSet = errors.New("storerKey not set in Context")
16 // ErrStorerKeyNotStorer is returned when there's a value in the Context for storerKey, but it's not a Storer.
17 ErrStorerKeyNotStorer = errors.New("the value for storerKey does not fulfill the Storer interface")
18 )
19
20 // GetStorer returns the Storer associated with the passed Context.
21 // If no Storer is set, ErrNoStorerSet will be returned.
22 // If something that is not a Storer is set using the Storer's key,
23 // ErrStorerKeyNotStorer will be returned.
24 func GetStorer(c context.Context) (Storer, error) {
25 val := c.Value(storerKey)
26 if val == nil {
27 return nil, ErrNoStorerSet
28 }
29 storer, ok := val.(Storer)
30 if !ok {
31 return nil, ErrStorerKeyNotStorer
32 }
33 return storer, nil
34 }
35
36 // WithStorer returns a Context that extends from the passed Context,
37 // but includes or overwrites the Storer key with the passed Storer.
38 func WithStorer(c context.Context, storer Storer) context.Context {
39 return context.WithValue(c, storerKey, storer)
40 }