MySQL のFederated Table としてWasabi データを連携利用する

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Wasabi ODBC Driver

Wasabi ODBC Driver を使って、ODBC 接続をサポートするあらゆるアプリケーション・ツールからWasabi クラウドストレージにデータ連携。

Wasabi にデータベースのようにアクセス - オブジェクト、バケットにODBC インターフェースで接続。



SQL Gateway とODBC Driver を使ってWasabi のMySQL Federated Table を構築する。

SQL Gateway を使って、MySQL リモーティングサービスを作成し、Wasabi のMySQL Federated Table を構築できます。CData ODBC Driver for Wasabi のMySQL インターフェースのdeamon になります。サービス起動後、MySQL のFEDERATED ストレージエンジンを使ってサーバーおよびテーブルを作成します。Wasabi data をMySQL テーブルのように使いましょう。

Wasabi データへの接続

If you have not already done so, provide values for the required connection properties in the data source name (DSN). You can use the built-in Microsoft ODBC Data Source Administrator to configure the DSN. This is also the last step of the driver installation. See the "Getting Started" chapter in the help documentation for a guide to using the Microsoft ODBC Data Source Administrator to create and configure a DSN.

To authorize Wasabi requests, provide the credentials for an administrator account or for an IAM user with custom permissions. Set AccessKey to the access key Id. Set SecretKey to the secret access key.

Note: You can connect as the AWS account administrator, but it is recommended to use IAM user credentials to access AWS services.

For information on obtaining the credentials and other authentication methods, refer to the Getting Started section of the Help documentation.

SQL Gateway の設定

See the SQL Gateway Overview to set up connectivity to Wasabi data as a virtual MySQL database. You will configure a MySQL remoting service that listens for MySQL requests from clients. The service can be configured in the SQL Gateway UI.

Wasabi Data のFEDERATED サーバーおよびテーブルを作成

After you have configured and started the service, create a FEDERATED server to simplify the process of creating FEDERATED tables:

FEDERATED サーバーの作成

The following statement will create a FEDERATED server based on the ODBC Driver for Wasabi. Note that the username and password of the FEDERATED server must match a user account you defined on the Users tab of the SQL Gateway.

CREATE SERVER fedWasabi
FOREIGN DATA WRAPPER mysql
OPTIONS (USER 'sql_gateway_user', PASSWORD 'sql_gateway_passwd', HOST 'sql_gateway_host', PORT ####, DATABASE 'CData Wasabi Sys');

FEDERATED テーブルの作成

To create a FEDERATED table using our newly created server, use the CONNECTION keyword and pass the name of the FEDERATED server and the remote table (Buckets). Refer to the following template for the statement to create a FEDERATED table:

CREATE TABLE fed_buckets (
  ...,
  name  TYPE(LEN),
  ownerid  TYPE(LEN),
  ...,
)
ENGINE=FEDERATED
DEFAULT CHARSET=latin1
CONNECTION='fedWasabi/buckets';

NOTE: The table schema for the FEDERATED table must match the remote table schema exactly. You can always connect directly to the MySQL remoting service using any MySQL client and run a SHOW CREATE TABLE query to get the table schema.

クエリの実行

You can now execute queries to the Wasabi FEDERATED tables from any tool that can connect to MySQL, which is particularly useful if you need to JOIN data from a local table with data from Wasabi. Refer to the following example:

SELECT 
  fed_buckets.name, 
  local_table.custom_field 
FROM 
  local_table 
JOIN 
  fed_buckets 
ON 
  local_table.foreign_name = fed_buckets.name;