Google Cloud Storage (GCS)

Hevo lets you load data from files in your GCS bucket into your data warehouse.

Configuring Google Cloud Storage as a Source

To configure Google Cloud Storage as a Source in Hevo:

  1. Click PIPELINES in the Asset Palette.

  2. Click + CREATE in the Pipeline List View.

  3. In the Select Source Type page, select GCS.

  4. In the Configure your GCS Account page, click + ADD GCS ACCOUNT.

  5. Select your Google account having access to GCS bucket you intend to connect and click Allow to authorize Hevo to read your data in Google Cloud Storage.

  6. In the Configure your GCS Source page, specify the following:

    GCS settings

    • Pipeline Name: A unique name for this Pipeline.
    • Bucket: Name of the bucket from which you want to ingest data.
    • Path Prefix: Path prefix for the data directory. By default, the files are listed from the root of the directory.
    • File Format: Choose a file format. Hevo currently supports AVRO, CSV, JSON, and XML formats. Contact Hevo Support if your Source data is in a different format. Based on the format you select, you must specify some additional settings:
      • CSV:
        1. Specify the Field Delimiter. This is the character on which fields in each line are separated. For example, `\t`, or `,`).
        2. Disable the Treat First Row As Column Headers option if the Source data file does not contain column headers. Hevo, then, automatically creates these during ingestion. Default setting: Enabled.
          See Example below.

        3. Enable the Create Event Types from folders option if the path prefix has subdirectories containing files in different formats. Hevo reads each of the subdirectories as a separate Event Type.

        Note: Files lying at the prefix path (and not in a subdirectory) are ignored.

      • JSON:
        • Enable the Create Event Types from folders option if the path prefix has subdirectories containing files in different formats. Hevo reads each of the subdirectories as a separate Event Type.

          Note: Files lying at the prefix path (and not in a subdirectory) are ignored.

      • XML:
        • Enable the Create Events from child nodes option to load each node under the root node in the XML file as a separate Event.
  7. Click TEST & CONTINUE.

  8. Proceed to configuring the data ingestion and setting up the Destination.

Things to Note

  • Gzipped files are automatically unzipped on ingestion by Hevo.
  • Files are re-ingested on update.

Example: Automatic Column Header Creation for CSV Tables

Consider the following data in CSV format, which has no column headers.

 CLAY COUNTY,32003,11973623
 CLAY COUNTY,32003,46448094
 CLAY COUNTY,32003,55206893
 CLAY COUNTY,32003,15333743
 SUWANNEE COUNTY,32060,85751490
 SUWANNEE COUNTY,32062,50972562
 ST JOHNS COUNTY,846636,32033,
 NASSAU COUNTY,32025,88310177
 NASSAU COUNTY,32041,34865452

If you disable the Treat first row as column headers option, Hevo auto-generates the column headers, as seen in the schema map here:

Column headers generated by Hevo for CSV data

The record in the Destination appears as follows:

Destination record with auto-generated column headers

Limitations

  • Hevo does not support UTF-16 encoding format for CSV files. As a workaround, you can convert the files to UTF-8 encoding format before these are ingested by the Pipeline.

Revision History

Refer to the following table for the list of key updates made to the page:

Date Release Description of Change
22-Feb-2021 NA Added the limitation about Hevo not supporting UTF-16 encoding format for CSV data. Read Limitations.
Last updated on 15 Apr 2021