-
Notifications
You must be signed in to change notification settings - Fork 110
/
routes_manager.go
266 lines (239 loc) · 10.4 KB
/
routes_manager.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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
package virtualrouter
import (
"context"
appmesh "github.com/aws/aws-app-mesh-controller-for-k8s/apis/appmesh/v1beta2"
"github.com/aws/aws-app-mesh-controller-for-k8s/pkg/aws/services"
"github.com/aws/aws-app-mesh-controller-for-k8s/pkg/conversions"
"github.com/aws/aws-app-mesh-controller-for-k8s/pkg/k8s"
"github.com/aws/aws-app-mesh-controller-for-k8s/pkg/references"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
appmeshsdk "github.com/aws/aws-sdk-go/service/appmesh"
"github.com/go-logr/logr"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/pkg/errors"
"k8s.io/apimachinery/pkg/conversion"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
)
// routesManager is responsible for manage routes for virtualRouter.
type routesManager interface {
// create will create routes on AppMesh virtualRouter to match k8s virtualRouter spec.
create(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter, vnByRefHash map[types.NamespacedName]*appmesh.VirtualNode) (map[string]*appmeshsdk.RouteData, error)
// update will update routes on AppMesh virtualRouter to match k8s virtualRouter spec.
update(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter, vnByRefHash map[types.NamespacedName]*appmesh.VirtualNode) (map[string]*appmeshsdk.RouteData, error)
// cleanup will cleanup routes on AppMesh virtualRouter
cleanup(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter) error
}
// newDefaultRoutesManager constructs new routesManager
func newDefaultRoutesManager(appMeshSDK services.AppMesh, log logr.Logger) routesManager {
return &defaultRoutesManager{
appMeshSDK: appMeshSDK,
log: log,
}
}
type defaultRoutesManager struct {
appMeshSDK services.AppMesh
log logr.Logger
}
func (m *defaultRoutesManager) create(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter, vnByKey map[types.NamespacedName]*appmesh.VirtualNode) (map[string]*appmeshsdk.RouteData, error) {
return m.reconcile(ctx, ms, vr, vnByKey, vr.Spec.Routes, nil)
}
func (m *defaultRoutesManager) update(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter, vnByKey map[types.NamespacedName]*appmesh.VirtualNode) (map[string]*appmeshsdk.RouteData, error) {
sdkRouteRefs, err := m.listSDKRouteRefs(ctx, ms, vr)
if err != nil {
return nil, err
}
return m.reconcile(ctx, ms, vr, vnByKey, vr.Spec.Routes, sdkRouteRefs)
}
func (m *defaultRoutesManager) cleanup(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter) error {
sdkRouteRefs, err := m.listSDKRouteRefs(ctx, ms, vr)
if err != nil {
return err
}
_, err = m.reconcile(ctx, ms, vr, nil, nil, sdkRouteRefs)
return err
}
// reconcile will make AppMesh routes(sdkRouteRefs) matches routes.
func (m *defaultRoutesManager) reconcile(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter, vnByKey map[types.NamespacedName]*appmesh.VirtualNode,
routes []appmesh.Route, sdkRouteRefs []*appmeshsdk.RouteRef) (map[string]*appmeshsdk.RouteData, error) {
matchedRouteAndSDKRouteRefs, unmatchedRoutes, unmatchedSDKRouteRefs := matchRoutesAgainstSDKRouteRefs(routes, sdkRouteRefs)
sdkRouteByName := make(map[string]*appmeshsdk.RouteData, len(matchedRouteAndSDKRouteRefs)+len(unmatchedRoutes))
for _, route := range unmatchedRoutes {
sdkRoute, err := m.createSDKRoute(ctx, ms, vr, route, vnByKey)
if err != nil {
return nil, err
}
sdkRouteByName[route.Name] = sdkRoute
}
for _, routeAndSDKRouteRef := range matchedRouteAndSDKRouteRefs {
route := routeAndSDKRouteRef.route
sdkRouteRef := routeAndSDKRouteRef.sdkRouteRef
sdkRoute, err := m.findSDKRoute(ctx, sdkRouteRef)
if err != nil {
return nil, err
}
if sdkRoute == nil {
return nil, errors.Errorf("route not found: %v", aws.StringValue(sdkRouteRef.RouteName))
}
sdkRoute, err = m.updateSDKRoute(ctx, sdkRoute, vr, route, vnByKey)
if err != nil {
return nil, err
}
sdkRouteByName[route.Name] = sdkRoute
}
for _, sdkRouteRef := range unmatchedSDKRouteRefs {
sdkRoute, err := m.findSDKRoute(ctx, sdkRouteRef)
if err != nil {
return nil, err
}
if sdkRoute == nil {
return nil, errors.Errorf("route not found: %v", aws.StringValue(sdkRouteRef.RouteName))
}
if err = m.deleteSDKRoute(ctx, sdkRoute); err != nil {
return nil, err
}
}
return sdkRouteByName, nil
}
func (m *defaultRoutesManager) listSDKRouteRefs(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter) ([]*appmeshsdk.RouteRef, error) {
var sdkRouteRefs []*appmeshsdk.RouteRef
if err := m.appMeshSDK.ListRoutesPagesWithContext(ctx, &appmeshsdk.ListRoutesInput{
MeshName: ms.Spec.AWSName,
MeshOwner: ms.Spec.MeshOwner,
VirtualRouterName: vr.Spec.AWSName,
}, func(output *appmeshsdk.ListRoutesOutput, b bool) bool {
sdkRouteRefs = append(sdkRouteRefs, output.Routes...)
return true
}); err != nil {
return nil, err
}
return sdkRouteRefs, nil
}
func (m *defaultRoutesManager) findSDKRoute(ctx context.Context, sdkRouteRef *appmeshsdk.RouteRef) (*appmeshsdk.RouteData, error) {
resp, err := m.appMeshSDK.DescribeRouteWithContext(ctx, &appmeshsdk.DescribeRouteInput{
MeshName: sdkRouteRef.MeshName,
MeshOwner: sdkRouteRef.MeshOwner,
VirtualRouterName: sdkRouteRef.VirtualRouterName,
RouteName: sdkRouteRef.RouteName,
})
if err != nil {
if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "NotFoundException" {
return nil, nil
}
return nil, err
}
return resp.Route, nil
}
func (m *defaultRoutesManager) createSDKRoute(ctx context.Context, ms *appmesh.Mesh, vr *appmesh.VirtualRouter, route appmesh.Route, vnByKey map[types.NamespacedName]*appmesh.VirtualNode) (*appmeshsdk.RouteData, error) {
sdkRouteSpec, err := BuildSDKRouteSpec(vr, route, vnByKey)
if err != nil {
return nil, err
}
resp, err := m.appMeshSDK.CreateRouteWithContext(ctx, &appmeshsdk.CreateRouteInput{
MeshName: ms.Spec.AWSName,
MeshOwner: ms.Spec.MeshOwner,
VirtualRouterName: vr.Spec.AWSName,
RouteName: aws.String(route.Name),
Spec: sdkRouteSpec,
})
if err != nil {
return nil, err
}
return resp.Route, nil
}
func (m *defaultRoutesManager) updateSDKRoute(ctx context.Context, sdkRoute *appmeshsdk.RouteData, vr *appmesh.VirtualRouter, route appmesh.Route, vnByKey map[types.NamespacedName]*appmesh.VirtualNode) (*appmeshsdk.RouteData, error) {
actualSDKRouteSpec := sdkRoute.Spec
desiredSDKRouteSpec, err := BuildSDKRouteSpec(vr, route, vnByKey)
if err != nil {
return nil, err
}
opts := cmpopts.EquateEmpty()
if cmp.Equal(desiredSDKRouteSpec, actualSDKRouteSpec, opts) {
return sdkRoute, nil
}
diff := cmp.Diff(desiredSDKRouteSpec, actualSDKRouteSpec, opts)
m.log.V(1).Info("routeSpec changed",
"virtualRouter", k8s.NamespacedName(vr),
"route", route.Name,
"actualSDKRouteSpec", actualSDKRouteSpec,
"desiredSDKRouteSpec", desiredSDKRouteSpec,
"diff", diff,
)
resp, err := m.appMeshSDK.UpdateRouteWithContext(ctx, &appmeshsdk.UpdateRouteInput{
MeshName: sdkRoute.MeshName,
MeshOwner: sdkRoute.Metadata.MeshOwner,
VirtualRouterName: sdkRoute.VirtualRouterName,
RouteName: sdkRoute.RouteName,
Spec: desiredSDKRouteSpec,
})
if err != nil {
return nil, err
}
return resp.Route, nil
}
func (m *defaultRoutesManager) deleteSDKRoute(ctx context.Context, sdkRoute *appmeshsdk.RouteData) error {
_, err := m.appMeshSDK.DeleteRouteWithContext(ctx, &appmeshsdk.DeleteRouteInput{
MeshName: sdkRoute.MeshName,
MeshOwner: sdkRoute.Metadata.MeshOwner,
VirtualRouterName: sdkRoute.VirtualRouterName,
RouteName: sdkRoute.RouteName,
})
if err != nil {
return err
}
return nil
}
type routeAndSDKRouteRef struct {
route appmesh.Route
sdkRouteRef *appmeshsdk.RouteRef
}
// matchRoutesAgainstSDKRouteRefs will match routes against sdkRouteRefs.
// return matched routeAndSDKRouteRef, not matched routes and not matched sdkRouteRefs
func matchRoutesAgainstSDKRouteRefs(routes []appmesh.Route, sdkRouteRefs []*appmeshsdk.RouteRef) ([]routeAndSDKRouteRef, []appmesh.Route, []*appmeshsdk.RouteRef) {
routeByName := make(map[string]appmesh.Route, len(routes))
sdkRouteRefByName := make(map[string]*appmeshsdk.RouteRef, len(sdkRouteRefs))
for _, route := range routes {
routeByName[route.Name] = route
}
for _, sdkRouteRef := range sdkRouteRefs {
sdkRouteRefByName[aws.StringValue(sdkRouteRef.RouteName)] = sdkRouteRef
}
routeNameSet := sets.StringKeySet(routeByName)
sdkRouteRefNameSet := sets.StringKeySet(sdkRouteRefByName)
matchedNameSet := routeNameSet.Intersection(sdkRouteRefNameSet)
unmatchedRouteNameSet := routeNameSet.Difference(sdkRouteRefNameSet)
unmatchedSDKRouteRefNameSet := sdkRouteRefNameSet.Difference(routeNameSet)
matchedRouteAndSDKRouteRef := make([]routeAndSDKRouteRef, 0, len(matchedNameSet))
for _, name := range matchedNameSet.List() {
matchedRouteAndSDKRouteRef = append(matchedRouteAndSDKRouteRef, routeAndSDKRouteRef{
route: routeByName[name],
sdkRouteRef: sdkRouteRefByName[name],
})
}
unmatchedRoutes := make([]appmesh.Route, 0, len(unmatchedRouteNameSet))
for _, name := range unmatchedRouteNameSet.List() {
unmatchedRoutes = append(unmatchedRoutes, routeByName[name])
}
unmatchedSDKRouteRefs := make([]*appmeshsdk.RouteRef, 0, len(unmatchedSDKRouteRefNameSet))
for _, name := range unmatchedSDKRouteRefNameSet.List() {
unmatchedSDKRouteRefs = append(unmatchedSDKRouteRefs, sdkRouteRefByName[name])
}
return matchedRouteAndSDKRouteRef, unmatchedRoutes, unmatchedSDKRouteRefs
}
func BuildSDKRouteSpec(vr *appmesh.VirtualRouter, route appmesh.Route, vnByKey map[types.NamespacedName]*appmesh.VirtualNode) (*appmeshsdk.RouteSpec, error) {
sdkVNRefConvertFunc := references.BuildSDKVirtualNodeReferenceConvertFunc(vr, vnByKey)
converter := conversion.NewConverter(conversion.DefaultNameFunc)
converter.RegisterUntypedConversionFunc((*appmesh.Route)(nil), (*appmeshsdk.RouteSpec)(nil), func(a, b interface{}, scope conversion.Scope) error {
return conversions.Convert_CRD_Route_To_SDK_RouteSpec(a.(*appmesh.Route), b.(*appmeshsdk.RouteSpec), scope)
})
converter.RegisterUntypedConversionFunc((*appmesh.VirtualNodeReference)(nil), (*string)(nil), func(a, b interface{}, scope conversion.Scope) error {
return sdkVNRefConvertFunc(a.(*appmesh.VirtualNodeReference), b.(*string), scope)
})
sdkRouteSpec := &appmeshsdk.RouteSpec{}
if err := converter.Convert(&route, sdkRouteSpec, nil); err != nil {
return nil, err
}
return sdkRouteSpec, nil
}