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MDBubing: from WARC records to MongoDB documents

unit-tests+lint integration-tests

MDBubing - ridiculous wordplay to merge the words MongoDB and BUbiNG - is a library aimed to:

  • Make it simple to migrate existing WARC files into MongoDB, namely exporting each record in a separate document.
  • Save MongoDB documents at BUbiNG crawl-time, bypassing WARC files creation.

Usage

Migrate WARC records to MongoDB documents

  1. Create a properties file defining the values of the following fields:
  • connectionString: the connection string of a MongoDB instance (you can also use it to specify eventual write majority concerns)
  • database: the database
  • collection: the collection to save documents in
  • warcFilePath: path of a WARC file (formats supported: .warc and .warc.gz)

You can refer to the following sample configuration: WarcToMongo-sample-configuration.properties.

  1. Execute the following command:
$ java dev.pstux.mdbubing.WarcToMongo -P <properties_file_path>
  1. Wait for the records to be exported and enjoy!

Save Mongo documents at crawl time

TODO: document this section

Development

This project expects source files to be formatted following the Google Java style. Run ./gradlew goJF in order to automatically format all .java files under src/.

Execute unit tests (mocking MongoDB entities): ./gradlew test.

Execute integration tests (automatically running a MongoDB docker container, testing, and shutting the instance down): ./gradlew integrationTestWithDocker.

CI tasks definitions can be found in the workflows directory.

TODO

  • Javadoc
  • Upload artifact to sonatype
  • Add ability to write into multiple collections
  • Map by default WARC-Record-ID into _id field
  • Add ability to specify the desired <WARC header, document field> mapping
  • Performance benchmarks