A Simple NodeJS script to generate MySQL to Redshift AWS DMS table mappings

dms_task_rule.js

/**
 * @author Jose Nidhin
 */
'use strict';

/**
 * Using Table Mapping with an Task to Select and Filter Data
 * https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Tasks.CustomizingTasks.TableMapping.html#CHAP_Tasks.CustomizingTasks.TableMapping.SelectionTransformation
 */

let tables = [
  {name: 'table1'},
  {name: 'table2', filters: [
    {
      "filter-type": "source",
      "column-name": "create_at",
      "filter-conditions": [{
        "filter-operator": "gte",
        "value": "2000-01-01 00:00:00"
      }]
    },
    {
      "filter-type": "source",
      "column-name": "updated_at",
      "filter-conditions": [{
        "filter-operator": "gte",
        "value": "2000-01-01 00:00:00"
      }]
    }
  ]},
  {name: 'table3', filters: [
    {
      "filter-type": "source",
      "column-name": "create_at",
      "filter-conditions": [{
        "filter-operator": "gte",
        "value": "2000-01-01 00:00:00"
      }]
    }
  ]}
];

let taskRule = [];

for (let i = 0; i < tables.length; i++) {
  let rule = {
    'rule-type': 'selection',
    'rule-id': (i + 1).toString(),
    'rule-name': (i + 1).toString(),
    'object-locator': {
      'schema-name': 'database1',
      'table-name': tables[i].name
    },
    'rule-action': 'include'
  };

  if (tables[i].filters) {
    rule.filters = tables[i].filters;
  }

  taskRule.push(rule);
}

console.log(JSON.stringify({rules: taskRule}));