@aws-sdk/middleware-sdk-sts

AssumeRole

This feature allows you to assume a role and obtain temporary security credentials. The code sample demonstrates how to use the AssumeRoleCommand to assume a role and log the temporary credentials.

const { STSClient, AssumeRoleCommand } = require('@aws-sdk/client-sts');
const client = new STSClient({ region: 'us-west-2' });
const command = new AssumeRoleCommand({
  RoleArn: 'arn:aws:iam::123456789012:role/demo',
  RoleSessionName: 'demoSession'
});
client.send(command).then((data) => {
  console.log(data.Credentials);
}).catch((error) => {
  console.error(error);
});

GetCallerIdentity

This feature allows you to retrieve details about the IAM user or role whose credentials are used to call the operation. The code sample demonstrates how to use the GetCallerIdentityCommand to get the caller's identity.

const { STSClient, GetCallerIdentityCommand } = require('@aws-sdk/client-sts');
const client = new STSClient({ region: 'us-west-2' });
const command = new GetCallerIdentityCommand({});
client.send(command).then((data) => {
  console.log(data);
}).catch((error) => {
  console.error(error);
});