Create Kafka-Connected Business Apps in AppSheet

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CData Connect



Use CData Connect Cloud to connect to Kafka from AppSheet and build custom business apps using live Kafka data.

AppSheet provides a no-code development platform for application software, which allows users to create mobile, tablet, and web applications. When paired with CData Connect Cloud, you get instant, cloud-to-cloud access to Kafka data for business applications. This article shows how to create a virtual database for Kafka in Connect Cloud and build a simple app from Kafka data in AppSheet.

CData Connect Cloud provides a pure MySQL, cloud-to-cloud interface for Kafka, allowing you to build reports from live Kafka data in AppSheet — without replicating the data to a natively supported database. As you create applications to work with data, AppSheet generates SQL queries to gather data. Using optimized data processing out of the box, CData Connect Cloud pushes all supported SQL operations (filters, JOINs, etc.) directly to Kafka, leveraging server-side processing to quickly return the requested Kafka data.

Create a Virtual MySQL Database for Kafka Data

CData Connect Cloud uses a straightforward, point-and-click interface to connect to data sources and generate APIs.

  1. Log into Connect Cloud and click Databases.
  2. Select "Kafka" from Available Data Sources.
  3. Enter the necessary authentication properties to connect to Kafka.

    Set BootstrapServers and the Topic properties to specify the address of your Apache Kafka server, as well as the topic you would like to interact with.

    Authorization Mechanisms

    • SASL Plain: The User and Password properties should be specified. AuthScheme should be set to 'Plain'.
    • SASL SSL: The User and Password properties should be specified. AuthScheme should be set to 'Scram'. UseSSL should be set to true.
    • SSL: The SSLCert and SSLCertPassword properties should be specified. UseSSL should be set to true.
    • Kerberos: The User and Password properties should be specified. AuthScheme should be set to 'Kerberos'.

    You may be required to trust the server certificate. In such cases, specify the TrustStorePath and the TrustStorePassword if necessary.

  4. Click Test Database.
  5. Click Privileges -> Add and add the new user (or an existing user) with the appropriate permissions.

With the virtual database created, you are ready to connect to Kafka data from AppSheet.

Connect to Kafka in AppSheet

The steps below outline connecting to CData Connect Cloud from AppSheet to create a new Kafka data source.

  1. Log into AppSheet
  2. Click "My account" in the menu
  3. Click the Sources tab and add a new data source
  4. Select Cloud Database and set the connection information
    • Type: MySQL
    • Server: the endpoint for your instance, including port, for example, myinstance.cdatacloud.net:3306
    • Database: the virtual database, for example, ApacheKafka1
    • Username: a Connect Cloud user with permissions for the database
    • Password: the password for the above Connect Cloud user
    • SSL: Require SSL
  5. Click "Test Connection"
  6. Click "Authorize Access"

Create an App

Once you create the data source for Kafka, you can start building apps on Kafka data. Start by clicking "My apps" in the menu.

  1. Click to create a new app and select "Start with your own data"
  2. Name the app and select an appropriate category, based on your data
  3. Select the newly created data source (e.g., database-1)
  4. Select the table or view with the data you want

At this point, you can configure the design of your app, selecting which columns from the selected table to display, use as labels, and more. Preview the app in the preview panel and then publish or share it when ready.

To get SQL data access to 200+ SaaS, Big Data, and NoSQL sources directly from your cloud applications, try the CData Connect Cloud.