Migrate AppSync client implementation to v3

[buksy90]

Hello guys,

I'd like to ask you for some guidance and help :). At my current project we have custom library providing abstraction over Aws Appsync, Cognito, CloudWatchLogs and I need to upgrade it from v2 to v3.

Currently I'm upgrading AppSync but I struggle. Here is how we did with v2 (not real implementation, just a simplified example).

import gql from 'graphql-tag';
import type { DocumentNode } from 'apollo-link';
import { AWSAppSyncClient } from 'aws-appsync';

const client = new AWSAppSyncClient(
  {
    url: 'https://abc1XXXX.appsync-api.eu-west-2.amazonaws.com/graphql',
    region: 'eu-west-2',
    auth: {
      type: 'AWS_IAM',
      credentials,
    },
    disableOffline: true,
  },
  {
    defaultOptions: {
      watchQuery: {
        fetchPolicy: 'cache-and-network',
      },
    },
  }
);

function prepareQuery(inputQuery: DocumentNode | string): DocumentNode {
  return typeof inputQuery === 'string'
    ? gql`
        ${inputQuery}
      `
    : inputQuery;
}

export async function query(query: DocumentNode | string) {
  return await client.query({
    query: prepareQuery(query),
  });
}

export async function mutate(mutation: DocumentNode) {
  return await client.mutate({
    mutation,
  });
}


//
// Usage
//
const data = await query('query { getX{ x } }');

and here is what I got so far for v3

import { AppSyncClient} from '@aws-sdk/client-appsync';

const client = new AppSyncClient(
  {
    // Is "endpoint" property correct replace for "url" property of v2?
    endpoint: 'https://abc1XXXX.appsync-api.eu-west-2.amazonaws.com/graphql',
    credentials,
    ...appsyncClientOptions
  }
);

client.send( ?? )

So not much :), I see the usage has changed and we are supposed to send a commands, but what command should I use to execute custom query/mutate graphql syntax?

Thanks in advance :) !

[buksy90]

PS: one additional question just to be sure, will communication between client with v3 sdk work with API using v2 sdk?

edit:
My expectations were incorrect, I thought aws-appsync library is deprecated in same way as aws-sdk v2 and needs to be replaced with v3 version. This is incorrect, seems like I can still be using aws-appsync.

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.