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Indexing DynamoDB Databases

Dependencies

Python (32-bit) must be installed on the Voyager Server machine. Ideally, the Python version should be 2.7.

DO NOT USE EARLIER VERSIONS OF PYTHON

Indexing Data

After confirming the dependencies, you need to add a new location.

To create a new location: 

  1. Go to Manage > Discovery > Locations 
  2. Go to the Add Locations section 
  3. Click Databases (Advanced)
  4. Select DynamoDB in the Connections drop-down list 
  5. Edit the configuration (see examples below)

Configuration Examples

Example 1

This configuration indexes all the collections in a DynamoDB database. It includes all the fields and maps only one field for all tables. The use of the asterisk (*) in this configuration means to include all fields, all tables and apply the field mapping in all tables.

{
  "fields": {"include": ["*"]},
  "tables": [
    {
      "name": "*",
      "action": "INCLUDE"
    },
    {
      "name": "*",
      "map": {
        "NAME": "name",
        "Geometry_WKT": "geo"
      }
    }
  ],
  "dynamodb": {
    "endpoint_url": "http://localhost:8000",
    "region": "us-west-2"
  }
}
 

Example 2

Index a single table.


{
	"fields": {
		"include": ["*"]
	},
	"tables": [{
		"name": "CITIES",
		"action": "INCLUDE"
	},
	{
		"name": "*",
		"map": {
			"NAME": "name",
			"Geometry_WKT": "geo"
		}
	}],
	"dynamodb": {
		"endpoint_url": "http://localhost:8000",
		"region": "us-west-2"
	}
}
 

Example 3

This example demonstrates the following:

  1. Index two tables
  2. Map fields for each collection
{
    "fields": {"include": ["*"]},
    "tables": [
      {
        "name": "STATES",
        "action": "INCLUDE"
        "map": {"STATE_NAME": "name", "Geometry_WKT": "geo}
      },
      {
        "name": "CITIES",
        "action": "INCLUDE"
        "map": {"CITY_NAME": "name", "Geometry_WKT": "geo"}
      }
    ],
    "dynamodb": {
		"endpoint_url": "http://localhost:8000",
		"region": "us-west-2"
	}
  }
 

Usage Notes

  • Geographic information can be indexed by mapping a geometry field to Voyager’s “geo” field as show in the sample configurations. The geometry field must be well-known text format (WKT).
  • The endpoint URL in the connection settings is optional and not required if this information is stored in a configuration file.
  • The region setting is required.
 
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