Need Example of calling mutation from NodeJS/Lambda

Hi,

I need to call a mutation from an AWS Lambda and I don’t manage to make it work. Unfortunately, I don’t find any example of directly using AppSync client for calling a mutation…

Currently, my code looks like that: const AddNotificationMutation = gql(mutation addNotification($notificationId: ID!, $recipientId: String!, $dateTime: String!, $content: String) { addNotification(notificationId: $notificationId, recipientId: $recipientId, dateTime: $dateTime, content: $content) { notificationId recipientId content dateTime } });

const AppSyncConfig = { url: process.env.GRAPHQL_API_URL, region: process.env.REGION, auth: { type: AUTH_TYPE.AWS_IAM, }, disableOffline: true, };

// Set up Apollo client

`const client = new AWSAppSyncClient(AppSyncConfig);

export const createNotification = (notification, callback) => {

logger.debug('Call for notification: %s', JSON.stringify(notification));
client.hydrated().then(client => {
    client.mutate({ mutation: AddNotificationMutation, variables: notification, fetchPolicy: 'network-only'})
        .then(newNotification => {
            logger.debug("newNotification created: %s", JSON.stringify(newNotification));
            return callback(null, newNotification);
        })
        .catch(error => {
            logger.error("newNotification failed: %s", JSON.stringify(error));
            return callback(error, notification);
        });
    });

}`

[damonmaria]

@OlivierPT I was having the same trouble as you. Solved it by importing AWS and then setting credentials from the config from that:

import AWS from 'aws-sdk/global'
import { AUTH_TYPE } from 'aws-appsync/lib/link/auth-link'

new AWSAppSyncClient(
    {
      url: env.graphQlApiEndpoint,
      region: AWS.config.region,
      auth: {
        type: AUTH_TYPE.AWS_IAM,
        credentials: AWS.config.credentials,
      },
      disableOffline: true,
    },
    {
      defaultOptions: {
        query: {
          fetchPolicy: 'network-only',
          errorPolicy: 'all',
        },
      },
    },
  )

[harleyguru]

Hi @OlivierPT

const mutation = gql(`
    mutation($infoID: String!){
            deleteInfo(infoID: $infoID) {
              infoID
              noOfDays
              noOfItems
              infoName
             }
    }`);

  const client = new AWSAppSyncClient({
    url: url,
    region: region,
    auth: {
        type: type,
        credentials: credentials,
    }
  });

  client.hydrated().then(function (client) {
      //Now run a query
      client.mutate({ mutation: mutation, variables:{infoID: infoID} })
          .then(function logData(data) {
              console.log('results of mutate: ', data);
          })
          .catch(console.error);
  });

This will be helpful for you?