Exporting to Google BigQuery with Scrapy

To configure a Scrapy project or spider to export scraped data to Google BigQuery:

1. You need Python 3.7 or higher and Scrapy 2.4 or higher.

   If you are using Scrapy Cloud, make sure you are using stack scrapy:2.4 or higher. Using the latest stack (scrapy:2.11) is generally recommended.

2. Install scrapy-bigquery:

   pip install scrapy-bigquery
   

   If you are using Scrapy Cloud, remember to add the following line to your requirements.txt file:

   scrapy-bigquery
   

3. Define the BIGQUERY_DATASET and BIGQUERY_TABLE Scrapy settings to point to the target table. For example:

   settings.py

   BIGQUERY_DATASET = "my-dataset"
   BIGQUERY_TABLE = "my-table"
   

   Additional settings are available.

   Tip

   To add Scrapy settings to a project, define them in your Scrapy Cloud project settings or add them to your settings.py file.

   settings.py

   MY_SETTING = ...
   

   To add settings to a spider, define them in your Scrapy Cloud spider-specific settings (open a spider in Scrapy Cloud and select the Settings tab) or add it to your spider code with the update_settings method or the custom_settings class variable:

   spiders/myspider.py

   class MySpider:
       custom_settings = {
           "MY_SETTING": ...,
       }
   

4. Define the BIGQUERY_SERVICE_ACCOUNT setting as a string with your service account credentials in base64-encoded JSON format:

   settings.py

   BIGQUERY_SERVICE_ACCOUNT = "eyJ0eX=="
   

   You can use the following command to generate the required value from your service account JSON file:

   cat service-account.json | jq . -c | base64
   

   Make sure you give your service account write access on the target table. You can do that by sharing the table with the email of the service account (client_email in the service account JSON).

Running your spider now, locally or on Scrapy Cloud, will export your scraped data to the configured Google BigQuery table.