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path: root/bin/harvest-commit-times
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#!/bin/sh

# shellcheck disable=SC2119,SC2120

# shellcheck source=../lib/load-configuration
. "${0%/*}/../lib/load-configuration"

# shellcheck disable=SC2016
usage() {
  >&2 echo ''
  >&2 echo 'harvest-commit-times: harvest the commit times of package'
  >&2 echo ' sources from git and put them into the database'
  >&2 echo ''
  >&2 echo 'possible options:'
  >&2 echo '  -h|--help:    Show this help and exit.'
  >&2 echo '  -w|--wait:    If necessary, wait for lock blocking.'
  [ -z "$1" ] && exit 1 || exit "$1"
}

eval set -- "$(
  getopt -o hw \
    --long help \
    --long wait \
    -n "$(basename "$0")" -- "$@" || \
  echo usage
)"

block_flag='-n'

while true; do
  case "$1" in
    -h|--help)
      usage 0
    ;;
    -w|--wait)
      block_flag=''
    ;;
    --)
      shift
      break
    ;;
    *)
      >&2 echo 'Whoops, forgot to implement option "'"$1"'" internally.'
      exit 42
    ;;
  esac
  shift
done

if [ $# -ne 0 ]; then
  >&2 echo 'Too many arguments.'
  usage
fi

exec 9> "${harvest_commit_times_lock_file}"
# shellcheck disable=SC2086
if ! verbose_flock ${block_flag} 9; then
  >&2 echo 'come back (shortly) later - Another harvest-commit-times is already running.'
  exit
fi

if ! ${i_am_the_master}; then
  for repo_name in ${repo_names}; do
    eval repo_path='"${repo_paths__'"${repo_name}"'}"'
    if [ -d "${repo_path}/.git" ]; then
      git -C "${repo_path}" remote update
    else
      git -C "${repo_path}" fetch origin master:master
    fi || \
      true
  done
fi

tmp_file=$(mktemp 'tmp.harvest-commit-times.XXXXXXXXXX' --tmpdir)
trap 'rm "${tmp_file}"' EXIT

if ! ${i_am_the_master}; then
  tmp_remote_file=$(
    ssh -o PasswordAuthentication=No buildmaster "mktemp 'tmp.harvest-commit-times.remotely.XXXXXXXXXX' --tmpdir"
  )
  trap 'rm "${tmp_file}"; ssh -o PasswordAuthentication=No buildmaster rm "${tmp_remote_file}"' EXIT
fi

while true; do

  # shellcheck disable=SC2016
  {
    printf 'SELECT'
    printf ' `package_sources`.`id`,'
    printf '`package_sources`.`pkgbase`,'
    printf '`package_sources`.`git_revision`,'
    printf '`package_sources`.`mod_git_revision`,'
    printf '`upstream_repositories`.`name`,'
    printf 'IF(`build_assignments`.`architecture`=%s,"any","x86_64")' "${architecture_ids__any}"
    printf ' FROM `package_sources`'
    mysql_join_package_sources_upstream_repositories
    mysql_join_package_sources_build_assignments
    printf ' WHERE `package_sources`.`commit_time`="0000-00-00 00:00:00"'
    printf ' AND `package_sources`.`uses_upstream`'
    if ! ${i_am_the_master}; then
      printf ' ORDER BY RAND()'
    fi
    printf ' LIMIT 10'
  } \
  | mysql_run_query 'unimportant' \
  | sponge \
  | while read -r id pkgbase git_revision mod_git_revision repository architecture; do
    commit_time=$(
      # shellcheck disable=SC2154
      git -C "${repo_paths__state}" log -n 1 --pretty=format:%ct HEAD -- "${repository}-${architecture}/${pkgbase}"
    )
    if [ -n "${commit_time}" ]; then
      printf '%s\t%s\n' \
        "${id}" \
        "${commit_time}"
    else
      >&2 printf 'Package source %s is not available in git.\n' \
        "${id}"
      exit 2
    fi
  done > \
  "${tmp_file}"

  >&2 printf '.'

  if [ -s "${tmp_file}" ]; then
    if ! ${i_am_the_master}; then
      ssh -o PasswordAuthentication=No buildmaster 'cat > "'"${tmp_remote_file}"'"' < \
        "${tmp_file}"
    fi
    # shellcheck disable=SC2016
    {
      printf 'CREATE TEMPORARY TABLE `cts` (`id` BIGINT, `ct` BIGINT);\n'
      if ${i_am_the_master}; then
        printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `cts`(`id`,`ct`);\n' \
          "${tmp_file}"
      else
        printf 'LOAD DATA LOCAL INFILE "%s" INTO TABLE `cts`(`id`,`ct`);\n' \
          "${tmp_remote_file}"
      fi
      printf 'UPDATE `cts`'
      printf ' JOIN `package_sources`'
      printf ' ON `package_sources`.`id`=`cts`.`id`'
      printf ' AND `package_sources`.`commit_time`="0000-00-00 00:00:00"'
      printf ' SET `package_sources`.`commit_time`=from_unixtime(`cts`.`ct`);\n'
    } | \
      if ${i_am_the_master}; then
        mysql_run_query 'unimportant'
      else
        ssh -o PasswordAuthentication=No buildmaster 'mysql buildmaster -N --raw --batch'
      fi
  else
    >&2 printf '\n'
    break
  fi

done