use custom logger for AWS JS SDK v3

aws-sdk-v3-custom-logger.ts

import { DescribeParametersCommand, SSMClient } from "@aws-sdk/client-ssm";
import { UserAgent } from '@aws-sdk/types';
import * as log4js from "log4js";

log4js.configure({
  appenders: { out: { type: "stdout" } },
  categories: { default: { appenders: ["out"], level: "debug" } },
});

const logger = log4js.getLogger();
const userAgent: UserAgent = [['SOLUTION/SOL1234', 'v1.1.0']];

const logRequestMiddleware = (next: any, _context: any) => async (args: any) => {
  console.log('Request:', args.request);
  return next(args);
};

async function main() {
  const ssmClient = new SSMClient({
    logger: logger,
    customUserAgent: userAgent,
  });

  ssmClient.middlewareStack.add(logRequestMiddleware, { step: 'finalizeRequest' });

  const parameters = await ssmClient.send(new DescribeParametersCommand({}));
  console.log(parameters);
}

main().then(() => {
  console.log('Done');
}).catch(err => {
  console.error(err);
});