ducky/devices
ducky/devices/context.go
Set up DeleteDevices in Memstore. Implement the DeleteDevices method for our Memstore, removing the Devices specified by the passed IDs. Also, create a simple test that verifies that when Devices are deleted, only the Devices you intend to delete are actually deleted. Further tests should be written to verify that this extends to ListDevicesByOwner (e.g., deleted devices will not be returned when listing them), CreateDevices (e.g., will not result in an ErrDeviceAlreadyExists error), and UpdateDevice (e.g., will return an ErrDeviceNotFound error after the Device is deleted). But for now, we're confident that it works in the simplest possible case.
1 package devices
3 import (
4 "errors"
6 "golang.org/x/net/context"
7 )
9 const (
10 storerKey = "code.secondbit.org/ducky/devices.hg#Storer"
11 )
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 )
20 func getStorer(c context.Context) (Storer, error) {
21 val := c.Value(storerKey)
22 if val == nil {
23 return nil, ErrNoStorerSet
24 }
25 storer, ok := val.(Storer)
26 if !ok {
27 return nil, ErrStorerKeyNotStorer
28 }
29 return storer, nil
30 }