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Use the API Server and AlloyDB ADO.NET Provider to Access AlloyDB Data in Microsoft PowerPivot
Use the API Server to connect to live AlloyDB data in the PowerPivot business intelligence tool.
This article will explain how to use the API Server and the ADO.NET Provider for AlloyDB (or any of 200+ other ADO.NET Providers) to provide AlloyDB data as OData services and then consume the data in Microsoft Excel's PowerPivot business intelligence tool. Follow the steps below to retrieve and edit AlloyDB data in Power Pivot.
Set Up the API Server
Follow the steps below to begin producing secure AlloyDB OData services:
Deploy
The API Server runs on your own server. On Windows, you can deploy using the stand-alone server or IIS. On a Java servlet container, drop in the API Server WAR file. See the help documentation for more information and how-tos.
The API Server is also easy to deploy on Microsoft Azure, Amazon EC2, and Heroku.
Connect to AlloyDB
After you deploy the API Server and the ADO.NET Provider for AlloyDB, provide authentication values and other connection properties needed to connect to AlloyDB by clicking Settings -> Connections and adding a new connection in the API Server administration console.
The following connection properties are usually required in order to connect to AlloyDB.
- Server: The host name or IP of the server hosting the AlloyDB database.
- User: The user which will be used to authenticate with the AlloyDB server.
- Password: The password which will be used to authenticate with the AlloyDB server.
You can also optionally set the following:
- Database: The database to connect to when connecting to the AlloyDB Server. If this is not set, the user's default database will be used.
- Port: The port of the server hosting the AlloyDB database. This property is set to 5432 by default.
Authenticating with Standard Authentication
Standard authentication (using the user/password combination supplied earlier) is the default form of authentication.
No further action is required to leverage Standard Authentication to connect.
Authenticating with pg_hba.conf Auth Schemes
There are additional methods of authentication available which must be enabled in the pg_hba.conf file on the AlloyDB server.
Find instructions about authentication setup on the AlloyDB Server here.
Authenticating with MD5 Authentication
This authentication method must be enabled by setting the auth-method in the pg_hba.conf file to md5.
Authenticating with SASL Authentication
This authentication method must be enabled by setting the auth-method in the pg_hba.conf file to scram-sha-256.
Authenticating with Kerberos
The authentication with Kerberos is initiated by AlloyDB Server when the ∏ is trying to connect to it. You should set up Kerberos on the AlloyDB Server to activate this authentication method. Once you have Kerberos authentication set up on the AlloyDB Server, see the Kerberos section of the help documentation for details on how to authenticate with Kerberos.
You can then choose the AlloyDB entities you want to allow the API Server access to by clicking Settings -> Resources.
Additionally, click Settings -> Server and set the Default Format to XML (Atom) for compatibility with Excel.
Authorize API Server Users
After determining the OData services you want to produce, authorize users by clicking Settings -> Users. The API Server uses authtoken-based authentication and supports the major authentication schemes. Access can also be restricted based on IP address; by default, only connections to the local machine are allowed. You can authenticate as well as encrypt connections with SSL.
Import AlloyDB Tables in Power Pivot
Follow the steps below to import tables that can be refreshed on demand:
- In Excel, click the PowerPivot Window icon in the PowerPivot tab to open PowerPivot.
- Click Home -> Get External Data -> From Data Service -> From OData Data Feed.
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Add authentication parameters. Click Advanced and set the Integrated Security option to Basic. You will need to enter the User Id and Password of a user who has access to the CData API Server. Set the password to the user's authtoken.
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In the Base URL box, enter the OData URL of the CData API Server. For example, http://localhost:8032/api.rsc.
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Select which tables you want to import and click Finish.
You can now work with AlloyDB data in Power Pivot.
