auth
auth/scope.go
Implement postgres version of authCodeStore. Create an authCodeStore that keeps data in Postgres. Again, we run into the problem where Scopes can't be stored in Postgres arrays, as discussed in 762953f6a7f2. I wish we could do better, but for now, it will suffice. We also added the postgres authCodeStore to our slice of authCodeStores to test when the correct environment variables are present. Wrote initialization SQL for the tables required by the postgres authCodeStore. Added SQL to the SQL script that empties our database, to properly empty our new tables.
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 sortedScopes []Scope
32 func (s sortedScopes) Len() int {
33 return len(s)
34 }
36 func (s sortedScopes) Swap(i, j int) {
37 s[i], s[j] = s[j], s[i]
38 }
40 func (s sortedScopes) Less(i, j int) bool {
41 return s[i].ID < s[j].ID
42 }
44 // ScopeChange represents a change to a Scope.
45 type ScopeChange struct {
46 Name *string
47 Description *string
48 }
50 func (s ScopeChange) Empty() bool {
51 return s.Name == nil && s.Description == nil
52 }
54 type scopeStore interface {
55 createScopes(scopes []Scope) error
56 getScopes(ids []string) ([]Scope, error)
57 updateScope(id string, change ScopeChange) error
58 removeScopes(ids []string) error
59 listScopes() ([]Scope, error)
60 }
62 func (m *memstore) createScopes(scopes []Scope) error {
63 m.scopeLock.Lock()
64 defer m.scopeLock.Unlock()
66 for _, scope := range scopes {
67 if _, ok := m.scopes[scope.ID]; ok {
68 return ErrScopeAlreadyExists
69 }
70 }
71 for _, scope := range scopes {
72 m.scopes[scope.ID] = scope
73 }
74 return nil
75 }
77 func (m *memstore) getScopes(ids []string) ([]Scope, error) {
78 m.scopeLock.RLock()
79 defer m.scopeLock.RUnlock()
81 scopes := []Scope{}
82 for _, id := range ids {
83 scope, ok := m.scopes[id]
84 if !ok {
85 continue
86 }
87 scopes = append(scopes, scope)
88 }
89 sorted := sortedScopes(scopes)
90 sort.Sort(sorted)
91 scopes = sorted
92 return scopes, nil
93 }
95 func (m *memstore) updateScope(id string, change ScopeChange) error {
96 m.scopeLock.Lock()
97 defer m.scopeLock.Unlock()
99 scope, ok := m.scopes[id]
100 if !ok {
101 return ErrScopeNotFound
102 }
103 scope.ApplyChange(change)
104 m.scopes[id] = scope
105 return nil
106 }
108 func (m *memstore) removeScopes(ids []string) error {
109 m.scopeLock.Lock()
110 defer m.scopeLock.Unlock()
112 for _, id := range ids {
113 if _, ok := m.scopes[id]; !ok {
114 return ErrScopeNotFound
115 }
116 }
117 for _, id := range ids {
118 delete(m.scopes, id)
119 }
120 return nil
121 }
123 func (m *memstore) listScopes() ([]Scope, error) {
124 m.scopeLock.RLock()
125 defer m.scopeLock.RUnlock()
127 scopes := []Scope{}
128 for _, scope := range m.scopes {
129 scopes = append(scopes, scope)
130 }
131 sorted := sortedScopes(scopes)
132 sort.Sort(sorted)
133 scopes = sorted
134 return scopes, nil
135 }