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To configure the Amplify client library for custom functions in AWS Amplify Gen 2, you need to properly grant your function access to the data resources it needs to interact with.
The error you encountered about `AMPLIFY_DATA_DEFAULT_NAME` being missing occurs because your function hasn't been granted access to interact with your Amplify Data resource. When a function is properly authorized to access your data resources, Amplify's backend tooling generates the necessary environment variables, including `AMPLIFY_DATA_DEFAULT_NAME`.
The solution is to grant your function access to your data schema by adding an authorization rule in your schema definition:
```typescript
a.schema(...).authorization(allow => [allow.resource(yourFunctionName)]);
```
This authorization step is crucial because it:
1. Grants the appropriate IAM permissions to your function
2. Ensures the necessary environment variables are generated
3. Allows the `getAmplifyDataClientConfig` function to properly configure the client
Once you've added this authorization, the `getAmplifyDataClientConfig` function will be able to read from the generated `env` object to produce the configuration for the resources your function has access to interact with. This function generates both the resource configuration and specifies how the client library should behave, particularly where it should read credentials from.
After making this change, your original code should work as expected:
```typescript
import { getAmplifyDataClientConfig } from '@aws-amplify/backend/function/runtime';
import { env } from '$amplify/env/your-function-name';
const { resourceConfig, libraryOptions } = await getAmplifyDataClientConfig(env);
```
Sources
Configure client library - AWS Amplify Gen 2 Documentation
Environment variables and secrets - AWS Amplify Gen 2 Documentation
Custom functions - React - AWS Amplify Gen 2 Documentation
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- AWS 공식업데이트됨 4년 전
Thank you, you helped me. I was stuck on the same error.
Thank you so so much, I have been trying to see what I did wrong for the past hour.
This helped me as well. Thank you.