Add lifecycle_type backfill clock job and rake task#5196
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It might be nice if operators have the option run the backfill as rake task manually.
A one-off clock job that backfills the lifecycle_type column on apps, droplets, and builds for rows that pre-date the column's introduction. Once all installations have run it long enough to drain those rows, this job will be removed. The job processes up to 1000 (BATCH_SIZE) * 10 (BATCHES_PER_RUN) rows per table in short transactions, idempotent and bounded. It is defensive against missing columns: schema(:table) is checked on each invocation, so it would be safe to be shipped together with the migration that introduces the column. Operators can also run `rake db:lifecycle_type_backfill[batch_size, batches_per_run]` manually; passing -1 for batches_per_run drains until no NULL rows remain.
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A one-off clock job that backfills the
lifecycle_typecolumn on apps, droplets, and builds for rows that pre-date the column's introduction. Once all installations have run it long enough to drain those rows, this job will be removed.The job processes up to 1000 (
BATCH_SIZE) * 10 (BATCHES_PER_RUN) rows per table in short transactions, idempotent and bounded. It is defensive against missing columns:schema(:table)is checked on each invocation, so it would be safe to be shipped together with the migration that introduces the column.Operators can also run
rake db:lifecycle_type_backfill[batch_size,batches_per_run]manually; passing -1 forbatches_per_rundrains until no NULL rows remain.I have reviewed the contributing guide
I have viewed, signed, and submitted the Contributor License Agreement
I have made this pull request to the
mainbranchI have run all the unit tests using
bundle exec rakeI have run CF Acceptance Tests