propagate user auth in workflow component

[stone widget]

any reccomended way to propagate user auth in workflow component?

[serene wagon]

Hi @stone widget. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

---

Based on the knowledge sources provided, there isn't specific information about propagating user authentication in a workflow component for Convex. However, I can provide some general guidance on handling authentication in Convex applications:

1. For most Convex functions, you can access the authenticated user information using ctx.auth.getUserIdentity() as mentioned in Convex & Auth0: User information in functions.

2. If you're using scheduled functions, it's important to note that auth is not automatically propagated. As stated in the Scheduled Functions documentation, you'll need to pass the required user information as a parameter if you want to authenticate or check authorization in a scheduled function.

3. For more complex scenarios, you might consider creating custom functions or wrappers to handle authentication consistently across your application. The article Authentication: Wrappers as "Middleware" discusses a pattern for adding authentication checks to your functions in a reusable way.

4. If you're using a specific auth provider like Clerk, you may need to set up the integration properly to ensure auth information is available throughout your application. The User Authentication with Clerk and Convex article provides some guidance on this integration.

For more specific recommendations on propagating auth in a workflow component, you might need to provide more details about your specific use case or consult the Convex documentation directly.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

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[stone widget]

@serene wagon i have a workflow that calls multiple mutations and action in a multitenancy project, thats why i need to know always the userId, also i qould like to use RLS component

[serene wagon]

Let me check the knowledge base for you again. One moment! :books:

---

Based on your specific use case involving a workflow with multiple mutations and actions in a multi-tenancy project, I can provide some guidance on handling user authentication and using Row Level Security (RLS) in Convex.

1. User Authentication:
   To consistently access the user ID across your workflow, you can use the ctx.auth.getUserIdentity() method in your Convex functions. This is described in the Auth in Functions documentation. Here's an example of how you might use it:

import { mutation } from "./_generated/server";

export const myMutation = mutation({
  handler: async (ctx, args) => {
    const identity = await ctx.auth.getUserIdentity();
    if (!identity) {
      throw new Error("Unauthenticated call to mutation");
    }
    const userId = identity.subject;
    // Use userId in your mutation logic
  },
});

2. Row Level Security (RLS):
   For implementing RLS, you can use the convex-helpers package, which provides utilities for implementing RLS in Convex. Here's how you might set it up:

import { customCtx, customMutation, customQuery } from "convex-helpers/server/customFunctions";
import { Rules, wrapDatabaseReader, wrapDatabaseWriter } from "convex-helpers/server/rowLevelSecurity";
import { DataModel } from "./_generated/dataModel";
import { mutation, query, QueryCtx } from "./_generated/server";

async function rlsRules(ctx: QueryCtx) {
const identity = await ctx.auth.getUserIdentity();
return {
yourTable: {
read: async (, document) => {
// Define your read access rules here
return document.userId === identity?.subject;
},
modify: async (, document) => {
// Define your modify access rules here
return document.userId === identity?.subject;
},
},
} satisfies Rules<QueryCtx, DataModel>;
}

export const queryWithRLS = customQuery(
query,
customCtx(async (ctx) => ({
db: wrapDatabaseReader(ctx, ctx.db, await rlsRules(ctx)),
}))
);

export const mutationWithRLS = customMutation(
mutation,
customCtx(async (ctx) => ({
db: wrapDatabaseWriter(ctx, ctx.db, await rlsRules(ctx)),
}))
);

This setup is based on the example provided in the [Row Level Security](<https://stack.convex.dev/row-level-security#authorization-via-row-level-security>) article.

3. Using RLS in your workflow:
Once you've set up RLS, you can use `queryWithRLS` and `mutationWithRLS` in your workflow instead of the regular `query` and `mutation`. This will automatically apply your RLS rules:

```typescript
import { queryWithRLS, mutationWithRLS } from "./rls";

export const workflowStep = mutationWithRLS({
  handler: async (ctx, args) => {
    // Your workflow logic here
    // RLS rules will be automatically applied
  },
});

By combining these approaches, you can ensure that user authentication is propagated throughout your workflow and that RLS is applied consistently across your multi-tenancy project. Remember to adjust the RLS rules according to your specific multi-tenancy requirements.

Row Level Security provides more detailed information on implementing RLS in Convex.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: