tarantool / go-config / 25739491415

86%

master: 85%

Build Type

Pull #64

github

Committed by bigbes

Commit Message

config: resolve Effective by folding per-loader layer trees

Effective() resolved against the single merged tree, so a value set at a
broad inheritance scope by a high-priority loader could lose to a value set
at a narrow scope by a low-priority loader. Build now keeps each top-level
collector's contribution as its own layer tree and Effective folds those
layers in ascending-priority order: within a layer the deepest scope wins,
across layers the higher-priority loader wins, and non-conflicting sub-keys
from different loaders coexist. MergeAppend/MergeDeep keys compose across
layers. A MultiCollector is folded into a single layer.

MutableConfig mutations are mirrored into the layered view: Set/Merge/Update
record values in a runtime overlay that outranks every loader, and Delete
records a tombstone (and prunes the overlay) so the deleted contribution is
suppressed from each layer's scope chain; re-setting a deleted path clears
its tombstone. Snapshot deep-clones the layers, overlay, and tombstones.

Configs not produced by a Builder (slices, Walk snapshots, effective
sub-configs) keep the original single-tree resolution.

Pull Request Pull Request #64: config: resolve Effective by folding per-loader layer trees

Coverage Stats

263 of 283 new or added lines in 4 files covered. (92.93%)

2 existing lines in 2 files now uncovered.

3559 of 4133 relevant lines covered (86.11%)

80.56 hits per line