Pre commit hook for ocp-build-data

pre-commit

#!/usr/bin/env bash

set -euo pipefail

# git remote prune origin

originating_branch() {
  local i branch
  i=0
  branch=""

  while [[ -z "$branch" && "$i" < 100 ]]; do
    branch=$(git branch -r --list 'origin/*' --contains "HEAD~$i" | awk '{print $1}')
    i=$(($i+1))
  done
  echo "Comparing to branch $branch" >/dev/stderr
  echo "$branch"
}

filter='
  {
    releases: {
      ($assembly):  .releases | to_entries[] | select(.key == $assembly).value
    }
  }
'

single_assembly_yml() {
  local assembly
  assembly="$1"
  shift
  yq --yaml-output -r --arg assembly "$assembly" "$filter" "$@"
}

single_assembly_json() {
  # Why have two? Because jq is much faster than yq, as yq needs top load the python runtime
  # on each invocation.
  local assembly
  assembly="$1"
  shift
  jq -r --arg assembly "$assembly" "$filter" "$@"
}

test_files=()
release_yml=0
success=0

originating_branch="$(originating_branch)"
changed_files=( $(git diff --name-only --diff-filter=ACMR --cached "$originating_branch") )

for file in "${changed_files[@]}"; do
  [[ "$file" =~ \.yml ]] || continue
  [[ "$file" == group.yml || "$file" == bugzilla.yml || "$file" == streams.yml || "$file" == erratatool.yml ]] && continue
  [[ "$file" == releases.yml ]] && release_yml=1 && continue
  test_files+=("$file")
done

releases_yml_checker() {
  local assembly base_yml

  (( release_yml )) || return 0

  assemblies=()
  base_json="$(git show "$originating_branch:releases.yml" | yq .)"
  json="$(yq . releases.yml)"
  yml="$(<releases.yml)"
  checked_assemblies=()

  for assembly in $( jq -r '.releases | to_entries[].key' <<<"$json" ); do
    echo "Checking if assembly $assembly changed" >/dev/stderr
    checked_assemblies+=("$assembly")
    if ! diff -q <(
        single_assembly_json "$assembly" <<<"$json"
      ) <(
        single_assembly_json "$assembly" <<<"$base_json"
      ) >/dev/null 2>&1
    then
      assemblies+=("$assembly")
    fi
  done
  (( ${#assemblies[@]} == 0 )) && {
    echo "No assemblies with diff even if diff. Data model change?">/dev/stderr
    exit 1
  }
  tmpdir="$(mktemp -d /tmp/ocp-precommit.XXX)"
  cp group.yml "$tmpdir"
  trap "rm -r $tmpdir" EXIT
  for assembly in "${assemblies[@]}"; do
    echo "Testing assembly $assembly" >/dev/stderr
    single_assembly_yml "$assembly" <<<"$yml" >"$tmpdir/releases.yml"
    validate-ocp-build-data "$tmpdir/releases.yml"
  done
}

releases_yml_checker || success=1
if (( ${#test_files[@]} > 0 )); then
  validate-ocp-build-data "${test_files[@]}" || success=1
fi

exit "$success"