bug: ApisixRoute backendPoint duplicate

[zlhgo]

Issue description

pkg/kube/translation/apisix_route.go:258
ApisixRoute backendPoint duplicates

Environment

• your apisix-ingress-controller version (output of apisix-ingress-controller version --long);

→ ./apisix-ingress-controller version --long                                                          
Version: 1.3.0
Git SHA: 65f7c88
Go Version: go1.17.2
Building OS/Arch: linux/amd64
Running OS/Arch: linux/amd64

• your Kubernetes cluster version (output of kubectl version);

→ kubectl version                                                                                     
Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.2", GitCommit:"092fbfbf53427de67cac1e9fa54aaa09a28371d7", GitTreeState:"clean", BuildDate:"2021-06-16T12:59:11Z", GoVersion:"go1.16.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"20", GitVersion:"v1.20.2", GitCommit:"faecb196815e248d3ecfb03c680a4507229c2a56", GitTreeState:"clean", BuildDate:"2021-01-13T13:20:00Z", GoVersion:"go1.15.5", Compiler:"gc", Platform:"linux/amd64"}

• if you run apisix-ingress-controller in Bare-metal environment, also show your OS version (uname -a).

→ uname -a                                                                                            
Linux zlh-PC 5.10.60-amd64-desktop #1 SMP Thu Aug 26 18:24:56 CST 2021 x86_64 GNU/Linux

Minimal test code / Steps to reproduce the issue

1. ApisixRoute config

apiVersion: apisix.apache.org/v2beta1
kind: ApisixRoute
metadata:
  name: flask-demo
spec:
  http:
  - name: http-8000
    match:
      hosts:
      - flask-demo.local.cn
      paths:
      - /*
    backends:
      - serviceName: flask-demo
        servicePort: 8000
        weight: 100
      - serviceName: flask-demo-group-a
        servicePort: 8000
        weight: 50
      - serviceName: flask-demo-group-b
        servicePort: 8000
        weight: 50

What's the actual result? (including assertion message & call stack if applicable)

What's the expected result?

Patch

diff --git a/pkg/kube/translation/apisix_route.go b/pkg/kube/translation/apisix_route.go
index 9ffee9f..928a7db 100644
--- a/pkg/kube/translation/apisix_route.go
+++ b/pkg/kube/translation/apisix_route.go
@@ -254,8 +254,8 @@ func (t *translator) translateHTTPRouteV2beta1(ctx *TranslateContext, ar *config
                                weight = *backend.Weight
                        }
                        backendPoints := make([]*configv2alpha1.ApisixRouteHTTPBackend, 0)
-                       for _, b := range backends {
-                               backendPoints = append(backendPoints, &b)
+                       for i, _ := range backends {
+                               backendPoints = append(backendPoints, &backends[i])
                        }
                        plugin, err := t.translateTrafficSplitPlugin(ctx, ar.Namespace, weight, backendPoints)
                        if err != nil {

[tao12345666333]

Thanks! Can you open a PR fix this?

[tao12345666333]

#734 has been merged. I will close this one.