Add helpers

Author: fido-node

.github/helpers/set-last-completed-job-sha1.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+set -exo pipefail
+
+### find previous sucessfull tag
+# shellcheck disable=SC2154
+if [[ ${branch} == "master" ]]; then
+    prev_build=$(git describe --tags --abbrev=0 --first-parent --exclude='????.??.??-*-*')
+else
+    prev_build=$(git describe --tags --abbrev=0 --first-parent)
+fi
+# if we have multiple tags on same commit, pick latest
+prev_build=$(git tag --points-at "${prev_build}" | sort | tail -n 1)
+git_prev_build_sha=$(git rev-list -n1 "${prev_build}")
+
+function get_diff_count() {
+  changed=$(git diff "${1}" --shortstat -- | awk '{print $1}')
+  if [[ -z $changed ]]; then
+    changed=0
+  fi
+  echo -n $changed
+}
+LAST_COMPLETED_JOB_SHA1=${git_prev_build_sha}
+
+
+# this needed as we have tag only healthy builds. And probably don't want to compare with unhealthy build
+master_tag=$(git describe --tags --abbrev=0 --first-parent --exclude='????.??.??-*-*' origin/master)
+master_sha=$(git rev-list -n1 "${master_tag}")
+changes_master=$(get_diff_count "${master_sha}")
+
+changes_git_tag=$(get_diff_count "${git_prev_build_sha}")
+
+changes_current_candidate=$(get_diff_count "${LAST_COMPLETED_JOB_SHA1}")
+
+if [[ ${changes_current_candidate} -gt ${changes_master} ]]; then
+  echo "as previuos will choose version from master ${master_tag}"
+  LAST_COMPLETED_JOB_SHA1=${master_sha}
+  changes_current_candidate=$(get_diff_count "${LAST_COMPLETED_JOB_SHA1}")
+elif [[ ${changes_current_candidate} -gt ${changes_git_tag} ]]; then
+  echo "as previuos will choose version from git tag ${prev_build}"
+  LAST_COMPLETED_JOB_SHA1=${git_prev_build_sha}
+  changes_current_candidate=$(get_diff_count "${LAST_COMPLETED_JOB_SHA1}")
+fi
+echo "LAST_COMPLETED_JOB_SHA1=${LAST_COMPLETED_JOB_SHA1}" >> $GITHUB_ENV
+
+
+LATEST_CACHE_SHA1=${LAST_COMPLETED_JOB_SHA1}
+
+
+set +xo pipefail
+retrive_tag_num=30
+last_builds=$(git tag -l --sort='-authordate' | head -n "${retrive_tag_num}" | uniq)
+set -o pipefail
+last_builds_array=($last_builds)
+tmp_dir='/tmp/'
+# changes_current_candidate
+(get_diff_count "${LATEST_CACHE_SHA1}"; echo -n " ${LATEST_CACHE_SHA1}") > "$tmp_dir/current.diff" &
+# git tags
+for i in $(seq 0 "$((retrive_tag_num-1))"); do
+  (get_diff_count "${last_builds_array[$i]}"; echo " ${last_builds_array[$i]}") > "$tmp_dir/$i.diff" &
+done
+wait
+cache_candidate=$(cat "$tmp_dir"/*.diff | sort -n | head -n 1)
+tag_with_min_changes=$(echo "$cache_candidate" | awk '{print $2}')
+min_changes=$(echo "$cache_candidate" | awk '{print $1}')
+
+echo "as previous will choose version from commit  ${tag_with_min_changes} with ${min_changes} changes"
+LATEST_CACHE_SHA1=$(git rev-list -n1 "${tag_with_min_changes}")
+changes_current_candidate=$(get_diff_count "${LATEST_CACHE_SHA1}")
+
+echo "LATEST_CACHE_SHA1=${LATEST_CACHE_SHA1}" >> $GITHUB_ENV