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ci(lint): shard golangci-lint across 8 LOC-balanced matrix jobs #2530
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| #!/usr/bin/env bash | ||
| # Usage: lint-shard.sh list <index 0..total-1> <total> | check <total> | ||
| # Deterministic LOC-balanced (LPT) split of the root module's packages for CI lint. | ||
| set -euo pipefail | ||
|
|
||
| cd "$(git rev-parse --show-toplevel)" | ||
|
|
||
| tags=$(sed -n '/^ build-tags:/,/^[^ ]/{s/^ - //p}' .golangci.yml | paste -sd, -) | ||
|
|
||
| weighted() { | ||
| local root dir n | ||
| root=$(pwd) | ||
| go list -e -tags "$tags" -f '{{.Dir}}' ./... | sort | while IFS= read -r dir; do | ||
| n=$(cat "$dir"/*.go 2>/dev/null | wc -l) | ||
| dir=${dir#"$root"} | ||
| echo "$n ./${dir#/}" | ||
| done | sed 's#^\([0-9]*\) \./$#\1 .#' | ||
| } | ||
|
|
||
| assign() { | ||
| local total="$1" | ||
| weighted | LC_ALL=C sort -k1,1nr -k2,2 | awk -v t="$total" ' | ||
| BEGIN { for (i = 0; i < t; i++) load[i] = 0 } | ||
| { | ||
| best = 0 | ||
| for (i = 1; i < t; i++) if (load[i] < load[best]) best = i | ||
| load[best] += $1 | ||
| print best, $1, $2 | ||
| }' | ||
| } | ||
|
|
||
| cmd="${1:-}" | ||
| case "$cmd" in | ||
| list) | ||
| [[ $# -eq 3 ]] || { echo "usage: $0 list <index 0..total-1> <total>" >&2; exit 2; } | ||
| idx="$2" total="$3" | ||
| (( idx >= 0 && idx < total )) || { echo "lint-shard: index $idx out of range 0..$((total - 1))" >&2; exit 2; } | ||
| assign "$total" | awk -v i="$idx" '$1 == i { print $3 }' | LC_ALL=C sort | ||
| ;; | ||
| check) | ||
| [[ $# -eq 2 ]] || { echo "usage: $0 check <total>" >&2; exit 2; } | ||
| total="$2" | ||
| out=$(assign "$total") | ||
| awk '{ n[$1]++; w[$1] += $2 } END { for (i in n) printf "lint-shard: shard %d: %d packages, %d LOC\n", i, n[i], w[i] }' <<<"$out" | sort -V | ||
| expected=$(weighted | awk '{ print $2 }' | LC_ALL=C sort) | ||
| actual=$(awk '{ print $3 }' <<<"$out" | LC_ALL=C sort) | ||
| if [[ "$expected" != "$actual" ]]; then | ||
| echo "lint-shard: union of shards differs from go list:" >&2 | ||
| diff <(echo "$expected") <(echo "$actual") >&2 || true | ||
| exit 1 | ||
| fi | ||
| echo "lint-shard: OK: $(wc -l <<<"$actual") packages across $total shards, no gaps or duplicates" | ||
| ;; | ||
| *) | ||
| echo "usage: $0 list <index 0..total-1> <total> | check <total>" >&2 | ||
| exit 2 | ||
| ;; | ||
| esac |
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Set
LC_ALL=Concommas well.Both inputs to
commare sorted withLC_ALL=C, butcommitself runs under the caller's locale.commcompares lines using that locale's collation. In a non-C locale, such asen_US.UTF-8, paths with mixed case or punctuation can sort differently from the C order used for the inputs.commcan then miss matching packages or report that its input is unsorted. CI runners with a C-family locale are not affected.Suggested fix
Committable suggestion