-
Notifications
You must be signed in to change notification settings - Fork 0
/
vault.go
166 lines (147 loc) · 4.03 KB
/
vault.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
package types
import (
"context"
"errors"
"fmt"
"github.com/rainest/decklib/pkg/crud"
"github.com/rainest/decklib/pkg/state"
"github.com/kong/go-kong/kong"
)
// vaultCRUD implements crud.Actions interface.
type vaultCRUD struct {
client *kong.Client
}
func vaultFromStruct(arg crud.Event) *state.Vault {
vault, ok := arg.Obj.(*state.Vault)
if !ok {
panic("unexpected type, expected *state.Vault")
}
return vault
}
// Create creates a Vault in Kong.
// The arg should be of type crud.Event, containing the vault to be created,
// else the function will panic.
// It returns a the created *state.Vault.
func (s *vaultCRUD) Create(ctx context.Context, arg ...crud.Arg) (crud.Arg, error) {
event := crud.EventFromArg(arg[0])
vault := vaultFromStruct(event)
createdVault, err := s.client.Vaults.Create(ctx, &vault.Vault)
if err != nil {
return nil, err
}
return &state.Vault{Vault: *createdVault}, nil
}
// Delete deletes a Vault in Kong.
// The arg should be of type crud.Event, containing the vault to be deleted,
// else the function will panic.
// It returns a the deleted *state.Vault.
func (s *vaultCRUD) Delete(ctx context.Context, arg ...crud.Arg) (crud.Arg, error) {
event := crud.EventFromArg(arg[0])
vault := vaultFromStruct(event)
err := s.client.Vaults.Delete(ctx, vault.ID)
if err != nil {
return nil, err
}
return vault, nil
}
// Update updates a Vault in Kong.
// The arg should be of type crud.Event, containing the vault to be updated,
// else the function will panic.
// It returns a the updated *state.Vault.
func (s *vaultCRUD) Update(ctx context.Context, arg ...crud.Arg) (crud.Arg, error) {
event := crud.EventFromArg(arg[0])
vault := vaultFromStruct(event)
updatedVault, err := s.client.Vaults.Create(ctx, &vault.Vault)
if err != nil {
return nil, err
}
return &state.Vault{Vault: *updatedVault}, nil
}
type vaultDiffer struct {
kind crud.Kind
currentState, targetState *state.KongState
}
// Deletes generates a memdb CRUD DELETE event for Vaults
// which is then consumed by the differ and used to gate Kong client calls.
func (d *vaultDiffer) Deletes(handler func(crud.Event) error) error {
currentVaults, err := d.currentState.Vaults.GetAll()
if err != nil {
return fmt.Errorf("error fetching vaults from state: %w", err)
}
for _, vault := range currentVaults {
n, err := d.deleteVault(vault)
if err != nil {
return err
}
if n != nil {
err = handler(*n)
if err != nil {
return err
}
}
}
return nil
}
func (d *vaultDiffer) deleteVault(vault *state.Vault) (*crud.Event, error) {
_, err := d.targetState.Vaults.Get(*vault.ID)
if errors.Is(err, state.ErrNotFound) {
return &crud.Event{
Op: crud.Delete,
Kind: "vault",
Obj: vault,
}, nil
}
if err != nil {
return nil, fmt.Errorf("looking up vault %q: %w",
*vault.Prefix, err)
}
return nil, nil
}
// CreateAndUpdates generates a memdb CRUD CREATE/UPDATE event for Vaults
// which is then consumed by the differ and used to gate Kong client calls.
func (d *vaultDiffer) CreateAndUpdates(handler func(crud.Event) error) error {
targetVaults, err := d.targetState.Vaults.GetAll()
if err != nil {
return fmt.Errorf("error fetching vaults from state: %w", err)
}
for _, vault := range targetVaults {
n, err := d.createUpdateVault(vault)
if err != nil {
return err
}
if n != nil {
err = handler(*n)
if err != nil {
return err
}
}
}
return nil
}
func (d *vaultDiffer) createUpdateVault(vault *state.Vault) (*crud.Event,
error,
) {
vaultCopy := &state.Vault{Vault: *vault.DeepCopy()}
currentVault, err := d.currentState.Vaults.Get(*vault.Prefix)
if errors.Is(err, state.ErrNotFound) {
return &crud.Event{
Op: crud.Create,
Kind: "vault",
Obj: vaultCopy,
}, nil
}
if err != nil {
return nil, fmt.Errorf("error looking up vault %v: %w",
*vault.Prefix, err)
}
// found, check if update needed
if !currentVault.EqualWithOpts(vaultCopy, false, true) {
return &crud.Event{
Op: crud.Update,
Kind: "vault",
Obj: vaultCopy,
OldObj: currentVault,
}, nil
}
return nil, nil
}