Question

What is the best way to check if table exists in DynamoDb?

I would appreciate it if the code would be in PHP.

Answer 1

This function gives you a nice boolean to use in scripts.

use Aws\DynamoDb\Exception\ResourceNotFoundException; // <-- make sure this line is at the top

    public function TableExists($tableName) {

    $ddb = DynamoDbClient::factory(array('region' => 'us-east-1')); // EC2 role security

    try {
        $result = $ddb->describeTable(array(
            "TableName" => $tableName
        ));
    } catch (ResourceNotFoundException $e) {
        // if this exception is thrown, the table doesn't exist
        return false;
    }

    // no exception thrown? table exists!
    return true;
}

Hopefully this complete working code helps some of you.