how can I stop accessControlProvider overflow requests from backed to get permissions?

permissions don't change much to not at all , why can't we get the user permissions ones ?

5 Replies

Hi @koop_g. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To address the issue of excessive requests from the accessControlProvider to get permissions, Refine provides a way to optimize performance through caching. Since permissions typically don't change frequently, you can utilize React Query's caching capabilities to reduce the number of requests. Here's how you can implement this: 1. Use the useCan hook with query options:

const { data } = useCan({
  resource: "resource-you-ask-for-access",
  action: "action-type-on-resource",
  params: { foo: "optional-params" },
  queryOptions: {
    staleTime: 5 * 60 * 1000, // 5 minutes
    // ... other query options
  },
});

const { data } = useCan({
  resource: "resource-you-ask-for-access",
  action: "action-type-on-resource",
  params: { foo: "optional-params" },
  queryOptions: {
    staleTime: 5 * 60 * 1000, // 5 minutes
    // ... other query options
  },
});

By setting the staleTime option, you can control how long the permissions data is considered fresh before triggering a new request. In this example, it's set to 5 minutes. 2. Default caching behavior: It's worth noting that Refine already implements some default caching:

By default, Refine uses 5 minutes for cacheTime and 0 minutes for staleTime for its own access control points.

You can adjust these values to better suit your application's needs. By implementing these caching strategies, you can significantly reduce the number of requests made to the backend for permissions, while still ensuring that your application has up-to-date access control information. For more detailed information on performance optimization for the accessControlProvider, you can refer to the Access Control Provider documentation. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2mo ago

<@1327562833537400895> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

adverse-sapphireOP•2mo ago

I don't understand where should I place this useCan hook, I have build my custom AccessControlProvider as described in docs, I have added it to refine component as so

<Refine accessControlProvider={accessControlProvider}>
....

<Refine accessControlProvider={accessControlProvider}>
....

every navigation to anywhere triggers a huge amount of requests to the server to get permissions per component, if that is a LIST view then it would request permission for every item in the list . I have tried to add to my AccessControlProvider queryOptions as so:

export const accessControlProvider: AccessControlProvider = () => ({

  can: async ({ resource, action, params }) => {

    try {
      const response = await fetch("some.url.com", {
        method: 'GET',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${authToken}`,
        },
      })
      const data = await response.json();

    if (!response.ok) {
        throw new Error('Network response was not ok');
      }

    /** console.log("view_game") */
    const permap = {
        "show": "view_",
        "edit": "change_",
        "delete": "delete_",
        "create": "add_",
        "list": "view_",
        }
/**
    console.log(permap[action] + resource.substring(0, resource.length-1))
     */
    for (let key in data){
        if (data[key].indexOf(permap[action] + resource.substring(0, resource.length-1)) != -1) return { can: true }};

    return {
      can: false,
      reason: "Unauthorized",
    };


    } catch (error) {
        throw error;
    }
  },
  options: {
      buttons: {
        enableAccessControl: true,
        hideIfUnauthorized: true,
      },
      queryOptions: {
          cacheTime: 25000,
          staleTime: 5 * 60 * 1000
      },
    },
});

export const accessControlProvider: AccessControlProvider = () => ({

  can: async ({ resource, action, params }) => {

    try {
      const response = await fetch("some.url.com", {
        method: 'GET',
        headers: {
          'Content-Type': 'application/json',
          'Authorization': `Bearer ${authToken}`,
        },
      })
      const data = await response.json();

    if (!response.ok) {
        throw new Error('Network response was not ok');
      }

    /** console.log("view_game") */
    const permap = {
        "show": "view_",
        "edit": "change_",
        "delete": "delete_",
        "create": "add_",
        "list": "view_",
        }
/**
    console.log(permap[action] + resource.substring(0, resource.length-1))
     */
    for (let key in data){
        if (data[key].indexOf(permap[action] + resource.substring(0, resource.length-1)) != -1) return { can: true }};

    return {
      can: false,
      reason: "Unauthorized",
    };


    } catch (error) {
        throw error;
    }
  },
  options: {
      buttons: {
        enableAccessControl: true,
        hideIfUnauthorized: true,
      },
      queryOptions: {
          cacheTime: 25000,
          staleTime: 5 * 60 * 1000
      },
    },
});

its all working great besides its hitting the server hard with these unnecessary requests. @kapa.ai any idea what should I change ? @kapa.ai can you read my last comment and try to answer me ?

kapa.ai•2mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I apologize for not fully addressing your specific concern in my previous response. Let me provide a more targeted answer based on your last comment. You're absolutely right that user permissions typically don't change frequently, if at all, during a session. To address this and prevent unnecessary repeated requests to the backend, you can implement a strategy to fetch user permissions once and reuse them throughout the session. Here's how you can approach this: 1. Fetch permissions once during authentication: You can modify your authProvider to fetch the user's permissions when they log in and store them in the auth state. This way, you'll have the permissions available without making additional requests. 2. Use the stored permissions in the accessControlProvider: Once you have the permissions stored, you can access them in your accessControlProvider without making additional backend calls. Here's an example of how you might implement this:

import { AuthBindings } from "@refinedev/core";

export const authProviderClient: AuthBindings = {
  login: async ({ email, password }) => {
    // Authenticate user and fetch permissions
    const user = await authenticateUser(email, password);
    const permissions = await fetchUserPermissions(user.id);

    // Store user and permissions in auth state
    Cookies.set("auth", JSON.stringify({ user, permissions }), {
      expires: 30,
      path: "/",
    });

    return {
      success: true,
      redirectTo: "/",
    };
  },
  // ... other auth methods
};

export const accessControlProvider = {
  can: async ({ resource, action }) => {
    const auth = JSON.parse(Cookies.get("auth") || "{}");
    const { permissions } = auth;

    // Use the stored permissions to determine access
    const can = checkPermission(permissions, resource, action);
return Promise.resolve({ can });
  },
};

import { AuthBindings } from "@refinedev/core";

export const authProviderClient: AuthBindings = {
  login: async ({ email, password }) => {
    // Authenticate user and fetch permissions
    const user = await authenticateUser(email, password);
    const permissions = await fetchUserPermissions(user.id);

    // Store user and permissions in auth state
    Cookies.set("auth", JSON.stringify({ user, permissions }), {
      expires: 30,
      path: "/",
    });

    return {
      success: true,
      redirectTo: "/",
    };
  },
  // ... other auth methods
};

export const accessControlProvider = {
  can: async ({ resource, action }) => {
    const auth = JSON.parse(Cookies.get("auth") || "{}");
    const { permissions } = auth;

    // Use the stored permissions to determine access
    const can = checkPermission(permissions, resource, action);
return Promise.resolve({ can });
  },
};

This approach allows you to get the user permissions once and use them throughout the session without making repeated backend calls. For more information on implementing custom access control providers, you can refer to the Access Control Provider documentation. Remember to handle cases where permissions might need to be refreshed, such as after a certain period or specific user actions that could change their permissions. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2mo ago

<@1327562833537400895> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

how can I stop accessControlProvider overflow requests from backed to get permissions?

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