DSN の作成

このセクションでは、DSN 設定の編集方法と、Azure DevOps 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。

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。
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。
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。
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。

Azure DevOps への接続

To connect to your Azure DevOps account, specify Organization, the name of your Organization in the account, by navigating to Profile > Organizations.

For example, Organization=MyAzureDevOpsOrganization;

NOTE : Along with Organization you must provide ProjectId when connecting to Analytics schema.

Azure DevOps への認証

Basic

You can connect to your Azure DevOps account by providing the Organization and PersonalAccessToken. To generate a perosonal access token, log in to your Azure DevOps Organization account and navigate to Profile > Personal Access Tokens > New Token. The generated token is displayed.

Azure AD

Azure AD is a connection type that leverages OAuth to authenticate. OAuth requires the authenticating user to interact with Azure DevOps using an internet browser. The 本製品 facilitates this in several ways as described below. Set AuthScheme to AzureAD and Organization to the name of your Azure DevOps organization. The rest of the AzureAD flows assume that you set these two properties.

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 アプリケーションの作成 for information about creating custom applications and reasons for doing so.

For authentication, the only difference between the two methods is that you must set two additional connection properties when using custom OAuth applications.

After setting the following connection properties, you are ready to connect:

OAuthClientId: (custom applications only) Set this to the client Id in your application settings.
OAuthClientSecret: (custom applications only) Set this to the client secret in your application settings.
CallbackURL: Set this to the Redirect URL in your application settings.

When you connect the 本製品 opens the OAuth endpoint in your default browser. Log in and grant permissions to the application.

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.

Choose one of these 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 another machine and transfer the OAuth authentication values after you authenticate through the usual browser-based flow, as described in "Transfer OAuth Settings" below.
Then configure the 本製品 to automatically refresh the access token from 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.

Choose one of these options:
- If you are using the Embedded OAuth Application click Azure DevOps OAuth endpoint to open the endpoint in your browser.
- If you are using a custom OAuth application, create the Authorization URL by setting 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.
Log in and grant permissions to the 本製品. You are then redirected to the callback URL, which contains the verifier code.
Save the value of the verifier code. 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. Set the following properties:

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

InitiateOAuth: Set this to REFRESH.
OAuthVerifier: Set this to the verifier code.
OAuthClientId: (custom applications only) Set this to the client Id in your custom OAuth application settings.
OAuthClientSecret: (custom applications only) Set this to the client secret in the custom OAuth application settings.
OAuthSettingsLocation: Set this to the location of the file where the driver saves the OAuth token values that persist across connections.

After the OAuth settings file is generated, you need to re-set the following properties to connect:

InitiateOAuth: Set this to REFRESH.
OAuthClientId: (custom applications only) Set this to the client Id assigned when you registered your application.
OAuthClientSecret: (custom applications only) Set this to the client secret assigned when you registered your application.
OAuthSettingsLocation: Set this to the location containing the encrypted OAuth authentication values. Make sure this location grants 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 create and install 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.

Once you have successfully tested the connection, copy the OAuth settings file to your headless machine.

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

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

Power BI Connector for Azure DevOps