help request: Integrating key-aith and casbin plugins

[Rouaaba]

Description

Hello, I have a user backend route which integrates the key-auth plugin, that works fine so i have a consumer with his username and token.
But if I try to also use casbin, it always gives me access denied even though the user has the role and should have access, is apisix able to identify the username based on the token and then pass it to casbin?

***** with just key-auth plugin works fine: ******
curl -X GET "http://localhost:9080/user/project-users/Project1?userId=33"
-H "Content-Type: application/json"
-H "apikey: 595d8167-8725-442d-95f2-b87433c03ca4"

[{"id":33,"userName":"rouaa","email":"","rolesAndProjects":[{"roleName":"PROJECT_ADMINISTRATOR","projectName":"Project1"}],"globalRoles":[]}]

***** route config with casbin ****
curl -X PUT http://127.0.0.1:9180/apisix/admin/routes/UserBackend
-H "X-API-KEY: "
-d '
{
"uri": "/user/",
"priority": 0,
"methods": ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
"status": 1,
"upstream": {
"type": "roundrobin",
"nodes": {
"rbac-service:8082": 1
},
"scheme": "http",
"pass_host": "pass",
"hash_on": "vars"
},
"plugins": {
"cors": {
"allow_origins": "",
"allow_methods": "GET, POST, PUT, DELETE, OPTIONS",
"allow_headers": "",
"expose_headers": "",
"max_age": 3600,
"allow_credentials": true
},
"key-auth": {},
"authz-casbin": {
"username": "$consumer_name"
}
}
}'

***** casbin config (directly on the metadata so no config files) *****
curl -X GET http://127.0.0.1:9180/apisix/admin/plugin_metadata/authz-casbin -H "X-API-KEY: "
{"value":{"value":{"model":"[request_definition]\nr = sub, obj, act\n\n[policy_definition]\np = sub, obj, act\n\n[role_definition]\ng = , \n\n[policy_effect]\ne = some(where (p.eft == allow))\n\n[matchers]\nm = (g(r.sub, p.sub) || keyMatch(r.sub, p.sub)) && keyMatch(r.obj, p.obj) && keyMatch(r.act, p.act)","id":"authz-casbin","policy":"p, GLOBAL_ADMINISTRATOR, /admin/create-user, POST\np, GLOBAL_ADMINISTRATOR, /admin/createadmin, POST\np, GLOBAL_ADMINISTRATOR, /admin/list-users, GET\np, GLOBAL_ADMINISTRATOR, /admin/delete-user, POST\np, GLOBAL_ADMINISTRATOR, /admin/projectusers, GET\np, GLOBAL_ADMINISTRATOR, /admin/user-byrole, GET\np, GLOBAL_ADMINISTRATOR, /admin/role-byuser, GET\np, GLOBAL_ADMINISTRATOR, /admin/userprojects, GET\np, GLOBAL_ADMINISTRATOR, /admin/assign-role, POST\np, GLOBAL_ADMINISTRATOR, /admin/createproject, POST\np, GLOBAL_ADMINISTRATOR, /admin/list-projects, GET\np, PROJECT_ADMINISTRATOR{projectName}, /user/project-users/{projectName}, GET\np, PROJECT_ADMINISTRATOR{projectName}, /user/create-userrole, POST\np, PROJECT_MANAGER_{projectName}, /user/project-users/{projectName}, GET\np, PROJECT_USER_{projectName}, /user/project-users/{projectName}, GET\np, PROJECT_VIEWER_{projectName}, /user/project-users/{projectName}, GET\np, *, /user/changecredentials, POST\np, *, /user/login, POST\np, *, /user/updateprofile, PUT\np, *, /user/forgotpassword, POST\np, *, /user/resetpassword, POST\ng, root, GLOBAL_ADMINISTRATOR"},"id":"authz-casbin","createdIndex":305,"key":"/apisix/plugin_metadata/authz-casbin","modifiedIndex":440,"model":"[request_definition]\nr = sub, obj, act\n\n[policy_definition]\np = sub, obj, act\n\n[role_definition]\ng = _, _\n\n[policy_effect]\ne = some(where (p.eft == allow))\n\n[matchers]\nm = (g(r.sub, p.sub) || keyMatch(r.sub, p.sub)) && keyMatch(r.obj, p.obj) && keyMatch(r.act, p.act)","policy":"g, rouaa, PROJECT_ADMINISTRATOR_Project1"},"modifiedIndex":441,"key":"/apisix/plugin_metadata/authz-casbin","createdIndex":305}

**** consumer list ****
curl -X GET http://127.0.0.1:9180/apisix/admin/consumers -H "X-API-KEY: "
{"total":2,"list":[{"value":{"create_time":1738917958,"update_time":1739180980,"plugins":{"key-auth":{"key":"24a5ff7f-d742-40f6-b13d-9b842b5ef463"}},"username":"root"},"modifiedIndex":416,"key":"/apisix/consumers/root","createdIndex":347},{"value":{"create_time":1739180966,"update_time":1739182611,"plugins":{"key-auth":{"key":"595d8167-8725-442d-95f2-b87433c03ca4"}},"username":"rouaa"},"modifiedIndex":421,"key":"/apisix/consumers/rouaa","createdIndex":414}]}
how to make it identify the username based on the token)

Environment

• APISIX version (run apisix version):
• Operating system (run uname -a):
• OpenResty / Nginx version (run openresty -V or nginx -V):
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info):
• APISIX Dashboard version, if relevant:
• Plugin runner version, for issues related to plugin runners:
• LuaRocks version, for installation issues (run luarocks --version):