このセクションでは、DSN 設定の編集方法と、GitHub API への認証および接続について説明します。

DSN 設定

Microsoft ODBC データソースアドミニストレーターを使ってDSN 設定を編集できます。インストールプロセスではコネクタのインストール で説明のとおり、ユーザーDSN とシステムDSN の両方が作成されることに注意してください。

Note： 本製品 は、接続情報をWindows レジストリに保存します。本製品 がレジストリに書き込めるようにするには、Power BI を管理者として実行するか、接続にシステムDSN ではなくユーザーDSN を使用します。

ユーザーDSN

DSN 設定を編集するには、次の手順を実行してください。

1. スタート -> 検索 を選択し、検索ボックスにODBC データソース と入力します。
2. Power BI Desktop インストールのビット数（32-bit または64-bit）に対応するODBC アドミニストレーターのバージョンを選択してください。
3. システムデータソースを選択して構成をクリックします。
4. 接続タブの情報を編集してOK をクリックします。

システムDSN

システムDSN をユーザーDSN と同じ方法で設定します。ただし、ステップ3を実行する前に、システムDSN タブに切り替える必要があります。

Power BI のOn-Premises Data Gateway をStandard モードで使用している場合、システムDSN を使用する必要があります。

OAuthSettingsLocation（OAuth のプロンプトが繰り返されるのを避けるため、OAuth 認証情報をローカルに保存するパス）にも有効な場所を指定する必要があります。

これは、Standard モードがサービスモードで動作し、C:\Windows\ServiceProfiles\PBIEgwService\AppData\Local\Microsoft\On-premises data gateway のような許可された場所にしかアクセスできないためです。

Connecting to GitHub

To authenticate to GitHub you must connect using OAuth authentication.

Desktop Applications

CData provides an embedded OAuth application that simplifies OAuth desktop Authentication. Alternatively, you can create a custom OAuth application. See カスタムOAuth アプリの作成 for information about creating custom applications and reasons for doing so.

Get and Refresh the OAuth Access Token

After setting the following, you are ready to connect:

• OAuthClientId (custom applications only): The client Id assigned when you registered your application.
• OAuthClientSecret (custom applications only): The client secret assigned when you registered your application.
• CallbackURL (custom application only): The redirect URI defined when you registered your application.
• OwnerLogin (optional): The name of the user or organization whose repository and projects you plan to query. If you do not explicitly specify an OwnerLogin, the driver uses the currently authenticated user.

When you connect, the 本製品 opens GitHub's OAuth endpoint in your default browser. Log in and grant permissions to the application. The 本製品 refreshes the access token automatically when it expires.

Headless Machines

To configure the driver to use OAuth with a user account on a headless machine, you need to authenticate on another device that has an internet browser.

1. Choose one of two options:
   • Option 1: Obtain the OAuthVerifier value as described in "Obtain and Exchange a Verifier Code" below.
   • Option 2: Install the 本製品 on a machine with an internet browser and transfer the OAuth authentication values after you authenticate through the usual browser-based flow, as described in "Transfer OAuth Settings" below.
2. Then configure the 本製品 to automatically refresh the access token on the headless machine.

Option 1: Obtain and Exchange a Verifier Code

To obtain a verifier code, you must authenticate at the OAuth authorization URL.

Follow the steps below to authenticate from the machine with an internet browser and obtain the OAuthVerifier connection property.

1. Choose one of these options:
   • If you are using the Embedded OAuth Application, call the GetOAuthAuthorizationURL stored procedure. Open the URL returned by the stored procedure in a browser.
   • If you are using a custom OAuth application, set the following properties:
     • InitiateOAuth: Set to OFF.
     • OAuthClientId: Set to the client Id assigned when you registered your application.
     • OAuthClientSecret: Set to the client secret assigned when you registered your application.
     Then call the GetOAuthAuthorizationURL stored procedure with the appropriate CallbackURL. Open the URL returned by the stored procedure in a browser.
2. Log in and grant permissions to the 本製品. You are then redirected to the redirect URI. There will be a parameter called code appended to the redirect URI. Note the value of this parameter. Later you will set this in the OAuthVerifier connection property.

Next, you need to exchange the OAuth verifier code for OAuth refresh and access tokens.

On the headless machine, set the following connection properties to obtain the OAuth authentication values:

• InitiateOAuth: REFRESH
• OAuthVerifier: The noted verifier code (the value of the code parameter in the redirect URI).
• OAuthClientId: (custom applications only) The client Id in your custom OAuth application settings.
• OAuthClientSecret: (custom applications only) The client secret in the custom OAuth application settings.
• OAuthSettingsLocation: Set this to persist the encrypted OAuth authentication values to the specified location.

Test the connection to generate the OAuth settings file, then re-set the following properties to connect:

• InitiateOAuth: REFRESH
• OAuthClientId: (custom applications only) The client Id assigned when you registered your application.
• OAuthClientSecret: (custom applications only) The client secret assigned when you registered your application.
• OAuthSettingsLocation: The location containing the encrypted OAuth authentication values. Make sure this location gives read and write permissions to the 本製品 to enable the automatic refreshing of the access token.

Option 2: Transfer OAuth Settings

Prior to connecting on a headless machine, you need to install and create a connection with the driver on a device that supports an internet browser. Set the connection properties as described in "Desktop Applications" above.

After completing the instructions in "Desktop Applications", the resulting authentication values are encrypted and written to the location specified by OAuthSettingsLocation. The default filename is OAuthSettings.txt.

Test the connection to generate the OAuth settings file, then copy the OAuth settings file to your headless machine.

On the headless machine, set the following connection properties to connect to data:

• InitiateOAuth: REFRESH
• OAuthClientId: (custom applications only) The client Id assigned when you registered your application.
• OAuthClientSecret: (custom applications only) The client secret assigned when you registered your application.
• OAuthSettingsLocation: The location of the OAuth settings file you copied from the machine with the browser. Make sure this location gives read and write permissions to the 本製品 to enable the automatic refreshing of the access token.