wait_for_dynamodb_record.sh

# Usage: wait_for_dynamo_record
#
#   Checks to see if Lambda has run to save the sizing in dynamo
wait_for_dynamodb_record() {
  local response=$(check_dynamodb_record)
  local count=1
  while [ -z "$response" ]; do
    if [ $count -ge $WAITER_ATTEMPTS ]; then
      local timeout=$(($WAITER_ATTEMPTS * $WAITER_INTERVAL))
      msg "No item from DynamoDB found within $timeout seconds"
      return 1
    fi

    msg "No item in DynamoDB yet..."

    sleep $WAITER_INTERVAL

    response=$(check_dynamodb_record)
    count=$(($count + 1))
  done

  msg "Item found in DynamoDB."
  return 0
}

# Usage: check_dynamodb_record
#
#   Checks if an item exists in the $TABLE_NAME DynamoDB table with the $DEPLOYMENT_ID.
#   Returns 0 if an item was returned, 1 if no item was returned.
check_dynamodb_record() {
  local response=$($AWS_CLI dynamodb get-item --table-name $TABLE_NAME \
      --key '{"deploymentId":{"S":"'$DEPLOYMENT_ID'"}}')

  if [ -z "$response" ]; then
    return 1
  else
    echo $response
    return 0
  fi
}