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Build Elasticsearch-Connected ETL Processes in Google Data Fusion

Load the CData JDBC Driver into Google Data Fusion and create ETL processes with access live Elasticsearch data.

Google Data Fusion allows users to perform self-service data integration to consolidate disparate data. Uploading the CData JDBC Driver for Elasticsearch enables users to access live Elasticsearch data from within their Google Data Fusion pipelines. While the CData JDBC Driver enables piping Elasticsearch data to any data source natively supported in Google Data Fusion, this article walks through piping data from Elasticsearch to Google BigQuery,

Upload the CData JDBC Driver for Elasticsearch to Google Data Fusion

Upload the CData JDBC Driver for Elasticsearch to your Google Data Fusion instance to work with live Elasticsearch data. Due to the naming restrictions for JDBC drivers in Google Data Fusion, create a copy or rename the JAR file to match the following format -.jar. For example: cdata.jdbc.elasticsearch-2019.jar

  1. Open your Google Data Fusion instance
  2. Click the to add an entity and upload a driver
  3. On the "Upload driver" tab, drag or browse to the renamed JAR file.
  4. On the "Driver configuration" tab:
    • Name: Create a name for the driver (cdata.jdbc.elasticsearch) and make note of the name
    • Class name: Set the JDBC class name: (cdata.jdbc.elasticsearch.ElasticsearchDriver)
  5. Click "Finish"

Connect to Elasticsearch Data in Google Data Fusion

With the JDBC Driver uploaded, you are ready to work with live Elasticsearch data in Google Data Fusion Pipelines.

  1. Navigate to the Pipeline Studio to create a new Pipeline
  2. From the "Source" options, click "Database" to add a source for the JDBC Driver
  3. Click "Properties" on the Database source to edit the properties
    • Set the Label
    • Set Reference Name to a value for any future references (i.e.: cdata-elasticsearch)
    • Set Plugin Type to "jdbc"
    • Set Connection String to the JDBC URL for Elasticsearch. For example:

      jdbc:elasticsearch:RTK=5246...;Server=127.0.0.1;Port=9200;User=admin;Password=123456;

      Set the Server and Port connection properties to connect. To authenticate, set the User and Password properties, PKI (public key infrastructure) properties, or both. To use PKI, set the SSLClientCert, SSLClientCertType, SSLClientCertSubject, and SSLClientCertPassword properties.

      The data provider uses X-Pack Security for TLS/SSL and authentication. To connect over TLS/SSL, prefix the Server value with 'https://'. Note: TLS/SSL and client authentication must be enabled on X-Pack to use PKI.

      Once the data provider is connected, X-Pack will then perform user authentication and grant role permissions based on the realms you have configured.

      To use the JDBC Driver in Google Data Fusion, you will need to set the RTK property in the JDBC URL. You can view the licensing file included in the installation for information on how to set this property.

      Built-in Connection String Designer

      For assistance in constructing the JDBC URL, use the connection string designer built into the Elasticsearch JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

      java -jar cdata.jdbc.elasticsearch.jar

      Fill in the connection properties and copy the connection string to the clipboard.

    • Set Import Query to a SQL query that will extract the data you want from Elasticsearch, i.e.:
      SELECT * FROM Orders
  4. From the "Sink" tab, click to add a destination sink (we use Google BigQuery in this example)
  5. Click "Properties" on the BigQuery sink to edit the properties
    • Set the Label
    • Set Reference Name to a value like elasticsearch-bigquery
    • Set Project ID to a specific Google BigQuery Project ID (or leave as the default, "auto-detect")
    • Set Dataset to a specific Google BigQuery dataset
    • Set Table to the name of the table you wish to insert Elasticsearch data into

With the Source and Sink configured, you are ready to pipe Elasticsearch data into Google BigQuery. Save and deploy the pipeline. When you run the pipeline, Google Data Fusion will request live data from Elasticsearch and import it into Google BigQuery.

While this is a simple pipeline, you can create more complex Elasticsearch pipelines with transforms, analytics, conditions, and more. Download a free, 30-day trial of the CData JDBC Driver for Elasticsearch and start working with your live Elasticsearch data in Google Data Fusion today.