Every method of builds, build requests, rollouts, merges and assignments reads and writes the chain alone: the else branches that read the tables, the movers and MoveChain with their tests, chain_moved reads, ChainReads and the flags that switched a kind, the store's assignments mirror (KeepAssignmentPlans needs none of it: it uses only the AssignmentMirrored type, mirrors.go, and AssignmentValues, provisioning.go) and its tick, the move code of the controller's start, and ForTest's chain_moved row. The listed store tests of the move go with their functions; the tests of the readers, requests, assignments and plans that lived beside them stay in chain_store_test.go. Tests that replayed old data migrations over the build, assignment and pin tables are removed with the tables. The static test that no plan is written but through SavePlansMoving now reads the plan's chain path.
A request is the build's record under the id its outcome will carry, in state asked; the outcome takes its place and keeps the request beside it, so assign, the pending assignments and the planner read the builds bucket alone. The bucket removes no key, so a request past thirty days is not listed instead of deleted. The move folds build_request into the same records (one kind, builds, counted against both tables) and marks the requests never handed over to be asked again once: claimed before it is asked and settled after, so a crash loses the ask rather than making it twice. Also tests the chain buckets' options on a real bus, the assignments' mirror options included.
jschoubben