bug: limit-count plugins don't recognize the redis_port as integer

[huongtq-dm]

Current Behavior

Apisix doesn't recognize my redis_port environment variable, which causes the error below. But when I set redis_port: 6379 or 6380, it's working fine.

I created this manifest using ApisixRoute CRDs on k8s

• match:
  hosts:
  - example.com
  methods:
  - GET
  - POST
  - PUT
  - PATCH
  - DELETE
  paths:
  - /xxx
  name: limit-count-route-xxxyyy
  plugins:
  - config:
  count: 10
  key: http_x_forwarded_for
  key_type: var
  policy: redis
  redis_host: $env://APISIX_REDIS_HOST
  redis_password: $env://APISIX_REDIS_AUTH_KEY
  redis_port: $env://APISIX_REDIS_PORT
  redis_ssl: true
  redis_timeout: 2000
  rejected_code: 429
  time_window: 60
  enable: true
  name: limit-count
  upstreams:
  - name: common-upstream-green

It's work well when redis_port: 6379.

This is the error: - message: "1 error occurred:\n\t* unexpected status code 400; error message: {\"error_msg\":\"failed to check the configuration of plugin limit-count err: then clause did not match\"}\n\n\n"

Expected Behavior

No response

Error Logs

No response

Steps to Reproduce

1. Run APISIX on k8s
2. Using the Environment variable to configure the redis_port in rate-limit plugins (limit-count)

Environment

• APISIX version (run apisix version): helm 2.10.1 and apisix 3.12.0
• Operating system (run uname -a): docker image with helm chart
• OpenResty / Nginx version (run openresty -V or nginx -V): N/A
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info): etcd:3.5.19-debian-12-r0
• APISIX Dashboard version, if relevant: N.A
• Plugin runner version, for issues related to plugin runners: limit-count
• LuaRocks version, for installation issues (run luarocks --version): N/A

[Baoyuantop]

Not currently supported, PRs are welcome.