auth
2015-05-17
Parent:73e12d5a1124
auth/scope.go
Create interfaces for login verification flow. We needed an interface that we could use to say "send the email to verify the user's login" so that we could verify the emails we have are actually valid. This implements an NSQ version that sends an email_verification event. We'll get listener implementations that pull these messages off NSQ and actually send the emails. This also implements, for testing purposes, a version that just echoes the Login Value and the Verification code to stdout.
1 package auth
3 import (
4 "errors"
5 "sort"
6 )
8 var (
9 ErrNoScopeStore = errors.New("scopeStore not set in Context")
10 ErrScopeNotFound = errors.New("scope not found")
11 ErrScopeAlreadyExists = errors.New("scope already exists")
12 )
14 // Scope represents a limit on the access that a grant provides.
15 type Scope struct {
16 ID string
17 Name string
18 Description string
19 }
21 func (s *Scope) ApplyChange(change ScopeChange) {
22 if change.Name != nil {
23 s.Name = *change.Name
24 }
25 if change.Description != nil {
26 s.Description = *change.Description
27 }
28 }
30 type Scopes []Scope
32 func (s Scopes) Len() int {
33 return len(s)
34 }
36 func (s Scopes) Swap(i, j int) {
37 s[i], s[j] = s[j], s[i]
38 }
40 func (s Scopes) Less(i, j int) bool {
41 return s[i].ID < s[j].ID
42 }
44 func (s Scopes) Strings() []string {
45 res := make([]string, len(s))
46 for pos, scope := range s {
47 res[pos] = scope.ID
48 }
49 return res
50 }
52 func stringsToScopes(s []string) Scopes {
53 res := make(Scopes, len(s))
54 for pos, scope := range s {
55 res[pos] = Scope{ID: scope}
56 }
57 return res
58 }
60 // ScopeChange represents a change to a Scope.
61 type ScopeChange struct {
62 Name *string
63 Description *string
64 }
66 func (s ScopeChange) Empty() bool {
67 return s.Name == nil && s.Description == nil
68 }
70 type scopeStore interface {
71 createScopes(scopes []Scope) error
72 getScopes(ids []string) ([]Scope, error)
73 updateScope(id string, change ScopeChange) error
74 removeScopes(ids []string) error
75 listScopes() ([]Scope, error)
76 }
78 func (m *memstore) createScopes(scopes []Scope) error {
79 m.scopeLock.Lock()
80 defer m.scopeLock.Unlock()
82 for _, scope := range scopes {
83 if _, ok := m.scopes[scope.ID]; ok {
84 return ErrScopeAlreadyExists
85 }
86 }
87 for _, scope := range scopes {
88 m.scopes[scope.ID] = scope
89 }
90 return nil
91 }
93 func (m *memstore) getScopes(ids []string) ([]Scope, error) {
94 m.scopeLock.RLock()
95 defer m.scopeLock.RUnlock()
97 scopes := []Scope{}
98 for _, id := range ids {
99 scope, ok := m.scopes[id]
100 if !ok {
101 continue
102 }
103 scopes = append(scopes, scope)
104 }
105 sorted := Scopes(scopes)
106 sort.Sort(sorted)
107 scopes = sorted
108 return scopes, nil
109 }
111 func (m *memstore) updateScope(id string, change ScopeChange) error {
112 m.scopeLock.Lock()
113 defer m.scopeLock.Unlock()
115 scope, ok := m.scopes[id]
116 if !ok {
117 return ErrScopeNotFound
118 }
119 scope.ApplyChange(change)
120 m.scopes[id] = scope
121 return nil
122 }
124 func (m *memstore) removeScopes(ids []string) error {
125 m.scopeLock.Lock()
126 defer m.scopeLock.Unlock()
128 for _, id := range ids {
129 if _, ok := m.scopes[id]; !ok {
130 return ErrScopeNotFound
131 }
132 }
133 for _, id := range ids {
134 delete(m.scopes, id)
135 }
136 return nil
137 }
139 func (m *memstore) listScopes() ([]Scope, error) {
140 m.scopeLock.RLock()
141 defer m.scopeLock.RUnlock()
143 scopes := []Scope{}
144 for _, scope := range m.scopes {
145 scopes = append(scopes, scope)
146 }
147 sorted := Scopes(scopes)
148 sort.Sort(sorted)
149 scopes = sorted
150 return scopes, nil
151 }