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autor: Larry Franks
Ostatnia aktualizacja: 25.10.2016
Edytuj w witrynie GitHub

This sample demonstrates how to use Power BI (,) to display information generated by a C#-based Apache Storm topology running on HDInsight. Data is stored into SQL Database, then used to create a report in Power BI.

SCP.NET package version

The SCP.NET package version that you use for this project depends on the version of Storm installed on your HDInsight cluster. Use the following table to determine what SCP.NET version you must use in your project:

HDInsight version Apache Storm version SCP.NET version
3.3 0.10.# 0.10.#.#
3.4 0.10.# 0.10.#.#
3.5 1.0.# 1.0.#.#

Create a database

  1. Use the steps in the SQL Database tutorial document to create a new SQL Database.

  2. Connect to the database by following the steps in the Connect to a SQL Database with Visual Studio document to connect to the database.

  3. Right click on the database in Object Explorer and create a New Query. Paste the contents of the IISLogsTable.sql included in the downloaded project into the query window, and then use Ctrl + Shift + E to execute the query. You should receive a message that the command(s) completed successfully.

    Once this completes, there will be a new table named IISLOGS in the database.

Configure the sample

  1. From the Azure portal select your SQL database. From the Essentials section of the SQL database blade, select Show database connection strings. From the list that appears, copy the ADO.NET (SQL authentication) information.

  2. Open the sample in Visual Studio. From Solution Explorer, open the App.config file, and then find the following entry:

    <add key="SqlAzureConnectionString" value="##TOBEFILLED##" />

    Replace the ##TOBEFILLED## value with the database connection string copied in the previous step. Replace {your_username} and {your_password} with the username and password for the database.

  3. Save and close the files.

Deploy the sample

  1. From Solution Explorer, right-click the StormToSQL project and select Submit to Storm on HDInsight. Select the HDInsight cluster from the Storm Cluster dropdown dialog.

    [AZURE.NOTE] It may take a few seconds for the Storm Cluster dropdown to populate with server names.

    If prompted, enter the login credentials for your Azure subscription. If you have more than one subscription, log in to the one that contains your Storm on HDInsight cluster.

  2. When the topology has been successfully submitted, the Storm Topologies for the cluster should appear. Select the SqlAzureWriterTopology entry from the list to view information about the running topology.

    You can use this view to see information on the topology, or double-click on entries (such as the SqlAzureBolt) to see information specific to a component in the topology.

  3. After the topology has ran for a few minutes, return to the SQL query window you used to create the database. Replace the existing statements with the following.

    select * from iislogs;

    Use Ctrl + Shift + E to execute the query, and you should receive results similar to the following.

    1   2016-05-27 17:57:14.797 /bar    GET 200
    2   2016-05-27 17:57:14.843   /spam/eggs  POST    500
    3   2016-05-27 17:57:14.850 /eggs   DELETE  200
    4   2016-05-27 17:57:14.853   /foo    POST    404
    5   2016-05-27 17:57:14.853    /bar    GET 200
    6   2016-05-27 17:57:14.857 /spam   DELETE  200

    This is data that has been written from the Storm topology.

Create a report

  1. Connect to the Azure SQL Database connector for Power BI.

  2. Within Databases, select Get.

  3. Select Azure SQL Database, and then select Connect.

  4. Enter the information to connect to your Azure SQL Database. You can find this by visiting the Azure portal and selecting your SQL database.

    [AZURE.NOTE] You can also set the refresh interval and custom filters by using Enable Advanced Options from the connect dialog.

  5. After you've connected, you will see a new dataset with the same name as the database you connected to. Select the dataset to begin designing a report.

  6. From Fields, expand the IISLOGS entry. Select the checkbox for URISTEM. This will create a new report that lists the URI stems (/foo, /bar, etc.) logged in the database.

  7. Next, drag METHOD to the report. The report will update to list the stems and the corresponding HTTP method used for the HTTP request.

  8. From the Visualizations column, select the Fields icon, and then select the down arrow next to METHOD in the Values section. From the list that appears, select Count. This will change the report to list a count of how many times a specific URI has been accessed.

  9. Next, select the Stacked column chart to change how the information is displayed.

  10. Once you have the report how you want it, use the Save entry on the menu to enter a name and save the report.

Stop the topology

The topology will continue to run until you stop it or delete the Storm on HDInsight cluster. Perform the following steps to stop the topology.

  1. In Visual Studio, return to the topology viewer and select the topology.

  2. Select the Kill button to stop the topology.

Project code of conduct

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact with any additional questions or comments.