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path: root/bin/ping-from-slave
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#!/bin/sh

# should be called periodically on the build-master from the slaves to
#  - report any update on the build process
#  - show that the build is still running
#  - get notified by the build master if the build is not necessary anymore

# shellcheck disable=SC2119,SC2120

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

status=$(
  # shellcheck disable=SC2016,SC2154
  {
    printf 'SELECT'
    printf ' IF(`build_slaves`.`currently_building` IS NULL,0,1),'
    printf 'IF(`build_slaves`.`is_sane`,1,0)'
    printf ' FROM `build_slaves`'
    printf ' WHERE `build_slaves`.`name`=from_base64("%s");\n' \
      "$(printf '%s' "${slave}" | base64 -w0)"
  } | \
    mysql_run_query 'unimportant' | \
    tr '\t' ' '
)

# mysql errors are uncritical for us
if [ -z "${status}" ]; then
  exit
fi

if [ "${status% *}" != '1' ]; then
  >&2 echo 'You do not build anything currently - abort whatever you are doing.'
  if [ "${status#* }" = '1' ]; then
    # shellcheck disable=SC2016
    {
      printf 'UPDATE `build_slaves`'
      printf ' SET `build_slaves`.`is_sane`=0'
      printf ' WHERE `build_slaves`.`name`=from_base64("%s");\n' \
        "$(printf '%s' "${slave}" | base64 -w0)"
      printf 'SELECT CONCAT('
      printf '`persons`.`name`,": Your buildslave \\"",'
      printf '`build_slaves`.`name`,"\\" builds some outdated package."'
      printf ') FROM `build_slaves`'
      mysql_join_build_slaves_ssh_keys
      mysql_join_ssh_keys_persons
      printf ' WHERE `build_slaves`.`name`=from_base64("%s");\n' \
        "$(printf '%s' "${slave}" | base64 -w0)"
    } | \
      mysql_run_query | \
      irc_say
  fi
  exit 2
fi

log_lines=$(cat)


# shellcheck disable=SC2016
{
  printf 'UPDATE `build_slaves`'
  printf ' SET'
  printf ' `build_slaves`.`last_action`=from_base64("%s")' \
    "$(
      printf '%s' "$1" | \
        base64 -w0
    )"

  printf ', `build_slaves`.`logged_lines`='
  if [ -n "${log_lines}" ]; then
    printf 'from_base64("%s")' \
      "$(
        printf '%s' "$((
          $(
            printf '%s' "${log_lines}" | \
              cut -d' ' -f1 | \
              tr '\n' '+'
          )0))" | \
          base64 -w0
      )"
  else
    printf 'NULL'
  fi

  printf ', `build_slaves`.`trials`='
  if [ -n "${log_lines}" ]; then
    printf 'from_base64("%s")' \
      "$(
        printf '%s\n' "${log_lines}" | \
          wc -l | \
          base64 -w0
      )"
  else
    printf 'NULL'
  fi

  printf ' WHERE `build_slaves`.`id`=from_base64("%s");\n' \
    "$(
      # shellcheck disable=SC2154
      printf '%s' "${slave_id}" | \
        base64 -w0
    )"
} | \
  mysql_run_query 'unimportant'