Batched DynamoDB Transactions - WIP

batched-transactions.js

const seedTransaction = async (tableMap, data) => {
  // Each key in data contains its type in parenthesis
  // We must remove them before we can properly map over them
  const formattedData = data.map(d => {
    const keys = Object.keys(d).map(k => k.substring(0, k.indexOf(' ')));
    const values = Object.values(d);
    return keys.reduce((acc, k, i) => {
      acc[k] = values[i];
      return acc;
    }, {});
  });
  // Dynamo limits transaction writes to 10 records total
  const chunkedData = chunk(formattedData, 10);

  const params = {
    TransactItems:  [
      // ...
    ]
  };
  
  // dynamodb.transactWriteItems(params, function(err, data) {
  //   if (err) console.log(err, err.stack); // an error occurred
  //   else     console.log(data);           // successful response
  // });
};