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subunit2SQL README
subunit2SQL like it's name implies is a tool used for converting subunit streams to data in a SQL database. The motivation is that for multiple distributed test runs that are generating subunit output it is useful to store the results in a unified repository. This is the motivation for the testrepository project which does a good job for centralizing the results from multiple test runs.
Imagine something like the OpenStack CI system where the same basic test suite is normally run several hundreds of times a day. To provide useful introspection on the data from those runs and to build trends over time the test results need to be stored in a format that allows for easy querying. SQL databases make a lot of sense for doing this.
subunit2SQL uses alembic migrations to setup a DB schema that can then be used by the subunit2sql binary to parse subunit streams and populate the DB. Additional it provides a DB API that can be used to query information from the results stored to build other tooling.