AWS.config.credentials returns null when using `serverless invoke local` command in NodeJS

Question

I'm trying to run my AWS Lambda functions locally in a NodeJS environment with serverless invoke local [...] (as per https://www.serverless.com/framework/docs/providers/aws/cli-reference/invoke-local).

I keep getting error messages from appsync/graphql/apollo, stating: "Error: Network error: Response not successful: Received status code 403"

While debugging I found that I get the following: appsync.js:

const AWS = require("aws-sdk");
console.log(AWS.config.credentials); // returns null

If I try to run the same file with node appsync.js then instead of null, AWS.config.credentials returns a valid credentials object (taken from my local .aws/credentials file.

So everything is where it should be, the only problem seems to be with the serverless invoke local ... function not allowing my aws-sdk package to access my .aws/credentials file.

How do I get aws-sdk to set AWS.config.credentials?

JimmyTheCode · Accepted Answer · 2022-09-01 10:11:56Z

0

So the workaround that I managed to get working was to:

copy and paste my aws_access_key_id and aws_secret_access_key from .aws/credentials into my .env file.
Replace credentials: AWS.config.credentials, in my config object as follows:

const appSyncClientConfig = {
  url: "https://xxxxxxxxx.appsync-api.eu-west-2.amazonaws.com/graphql", // from AppSync console.
  region: "eu-west-2",
  auth: {
    type: AUTH_TYPE.AWS_IAM,
    // credentials: AWS.config.credentials, REPLACED THIS WITH THE BELOW
    credentials: {
      accessKeyId: process.env.aws_access_key_id,
      secretAccessKey: process.env.aws_secret_access_key,
    },
  },
  offlineConfig: {
    keyPrefix: "public",
  },
  disableOffline: true,
};

Now it's working.

answered Sep 1, 2022 at 10:11

JimmyTheCode

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