Prepare data

This topic describes how to use the data demo to generate data that simulates data in a real environment and can be used in subsequent data analytics.

1. Download the data demo package.
   You can download one of the following data demo packages based on your operating system. In this topic, the Windows 7 64-bit operating system is used.

   • Data demo package for macOS
   • Data demo package for Linux
   • Data demo package for Windows 7 64-bit
2. Configure the data demo.
   Decompress the data demo package and edit the app.conf file in the conf directory.

   The following content is in the app.conf file:

   endpoint = "https://workshop-bj-001.cn-beijing.ots.aliyuncs.com"
   instanceName = "workshop-bj-001"
   accessKeyId = "LTAIF24u7g******"
   accessKeySecret = "CcwFeF3sWTPy0wsKULMw34Px******"
   usercount = "200"
   daysCount = "7"

   You must specify the following parameters:

   • endpoint: the endpoint used to connect to the Tablestore instance. We recommend that you use the public endpoint.
   • instanceName: the name of the Tablestore instance.
   • accessKeyId and accessKeySecret: the AccessKey pair that is used to access Alibaba Cloud APIs.
3. Start the data demo to prepare test data.
   1. Start Command Prompt in Windows, go to the directory where the data demo resides, and run the following command to view the usage of commands that are related to the data demo:

      workshop_demo.exe -h

      The command returns the following results:

      workshop_demo.exe -h  
      * prepare: Prepare test data, create data tables, and generate behavior logs of a week for users based on the user count specified in the app.conf file.
      * raw ${userid} ${date} ${Top log count}: Query a specified number of logs of the specified user on the specified date.
      * new/day_active/month_active/day_pv/month_pv: Query data of the following specific types in the result table. new: new users. day_active: daily active users. month_active: monthly active users. day_pv: daily page views (PVs). month_pv: monthly PVs.

   2. Run the following command to prepare test data:

      workshop_demo.exe prepare

      The following figure shows the command output.

   In this process, the data demo automatically creates two tables in Tablestore. The following tables describe the columns in the created tables.

   • Raw log table: user_trace_log

     Column	Data type	Description
     md5	STRING	The first eight characters of the MD5 value of the user ID. This column is a primary key column.
     uid	STRING	The user ID. This column is a primary key column.
     ts	BIGINT	The timestamp when the user performed the operation. This column is a primary key column.
     ip	STRING	The IP address of the client that sends the request.
     status	BIGINT	The status code returned by the server.
     bytes	BIGINT	The number of bytes returned to the client.
     device	STRING	The model of the terminal used by the user.
     system	STRING	The version of the operating system used by the user. The values in this column are in the format of iosxxx or androidxxx.
     customize_event	STRING	The custom event, including logon, exit, purchase, registration, click, background running, user switch, and browse.
     use_time	BIGINT	The use duration of the application at a time. This column is available when the custom event is exit, background running, or user switch.
     customize_event_content	STRING	The content of the custom event.

   • Analysis result table: analysis_result

     Column	Data type	Description
     metric	STRING	The metric of data. Valid values: new, day_active, month_active, day_pv, month_pv. This column is a primary key column.
     ds	STRING	The data timestamp, in the format of yyyy-mm-dd or yyyy-mm. This column is a primary key column.
     num	BIGINT	The value of the specified metric.

4. Verify data.
   • Query detailed logs of a specified user.
     Run the following command to query a specified number of logs of a specified user on a specified date. In the command, set the date to that when the logs are generated.

     raw ${userid} ${date} ${Top log count}

     In the preceding command, ${userid} indicates the user ID, ${date} indicates the date when the logs were generated, and ${Top log count} indicates the number of logs to query. For example, if a table was created on June 15, 2019, you can run the workshop_demo.exe raw 00010 "2019-06-15" 20 command to query 20 logs for the user whose ID is 00010.
     Note Tablestore is schema-free. Therefore, you do not need to pre-define attribute columns. Different events in the customize_event column have different event content. Therefore, the data demo generates both a custom event and its content in a data record.
   • Query data in the analysis result table.
     You can run the workshop_demo.exe day_active command to query the number of daily active users.