entrypoint.bash

#!/usr/bin/env bash
##
# Entrypoint to start mysql service with custom data directory.
#
# This file is minimally modified to be easily updatable from the upstream.
# @see https://github.com/uselagoon/lagoon-images/blob/main/images/mariadb/entrypoints/9999-mariadb-init.bash
# LCOV_EXCL_START
set -eo pipefail

# Locations
CONTAINER_SCRIPTS_DIR="/usr/share/container-scripts/mysql"

if [ "$(ls -A /etc/mysql/conf.d/)" ]; then
   ep /etc/mysql/conf.d/*
fi

if [ "${1:0:1}" = '-' ]; then
  set -- mysqld "$@"
fi

wantHelp=
for arg; do
  case "$arg" in
    -'?'|--help|--print-defaults|-V|--version)
      wantHelp=1
      break
      ;;
  esac
done

# check if MARIADB_COPY_DATA_DIR_SOURCE is set, if yes we're coping the contents of the given folder into the data dir folder
# this allows to prefill the datadir with a provided datadir (either added in a Dockerfile build, or mounted into the running container).
# This is different than just setting $MARIADB_DATA_DIR to the source folder, as only /var/lib/mysql is a persistent folder, so setting
# $MARIADB_DATA_DIR to another folder will make mariadb to not store the datadir across container restarts, while with this copy system
# the data will be prefilled and persistent across container restarts.
if [ -n "$MARIADB_COPY_DATA_DIR_SOURCE" ]; then
  if [ -d ${MARIADB_DATA_DIR:-/var/lib/mysql}/mysql ]; then
    echo "MARIADB_COPY_DATA_DIR_SOURCE is set, but MySQL directory already present in '${MARIADB_DATA_DIR:-/var/lib/mysql}/mysql' skipping copying"
  else
    echo "MARIADB_COPY_DATA_DIR_SOURCE is set, copying datadir contents from '$MARIADB_COPY_DATA_DIR_SOURCE' to '${MARIADB_DATA_DIR:-/var/lib/mysql}'"
    CUR_DIR=${PWD}
    cd ${MARIADB_COPY_DATA_DIR_SOURCE}/; tar cf - . | (cd ${MARIADB_DATA_DIR:-/var/lib/mysql}; tar xvf -)
    cd $CUR_DIR
  fi
fi

ln -sf ${MARIADB_DATA_DIR:-/var/lib/mysql}/.my.cnf /home/.my.cnf

if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
  if [ ! -d "/run/mysqld" ]; then
    mkdir -p /run/mysqld
    chown -R mysql:mysql /run/mysqld
  fi

  MARIADB_INIT_WAIT_SECONDS=${MARIADB_INIT_WAIT_SECONDS:-30}
  MARIADB_INIT_PERIOD_SECONDS=${MARIADB_INIT_PERIOD_SECONDS:-1}

  # @note: If data dir exists and is not empty - most likely the DB has
  # already been initialised.
  if [ -d ${MARIADB_DATA_DIR:-/var/lib/mysql} ] && [ "$(ls -A "${MARIADB_DATA_DIR:-/var/lib/mysql}")" ]; then
    echo "MySQL directory already present, skipping creation"

    # @note: Added re-creation of the config for descendant images to have
    # the same password-less client login experience as for the parent image.
    if [ ! -f /var/lib/mysql/.my.cnf ]; then
      echo "[client]" >> /var/lib/mysql/.my.cnf
      echo "user=root" >> /var/lib/mysql/.my.cnf
      echo "password=${MARIADB_ROOT_PASSWORD}"  >> /var/lib/mysql/.my.cnf
    fi

    echo "starting mysql"
    /usr/bin/mysqld --skip-networking --wsrep_on=OFF &
    pid="$!"
    echo "pid is $pid"

    for i in $(seq 0 $MARIADB_INIT_WAIT_SECONDS); do
      if echo 'SELECT 1' | mysql -u root; then
        break
      fi
      echo 'MySQL init process in progress...'
      sleep $MARIADB_INIT_PERIOD_SECONDS
    done

    # @note: Added a flag to force upgrade.
    if [ "${FORCE_MYSQL_UPGRADE:-}" = "1" ]; then
      echo "starting mysql upgrade"
      # @note: mariadb-upgrade may fail on the first run due to the unresolved
      # permissions, but will succeed on the second run.
      # @see https://mariadb.com/kb/en/mariadb-upgrade/#
      mariadb-upgrade --force || mariadb-upgrade --force
    fi

    if ! kill -s TERM "$pid" || ! wait "$pid"; then
      echo >&2 'MySQL init process failed.'
      exit 1
    fi
  else
    echo "MySQL data directory not found, creating initial DBs"

    mysql_install_db --skip-name-resolve --skip-test-db --auth-root-authentication-method=normal --datadir=${MARIADB_DATA_DIR:-/var/lib/mysql} --basedir=/usr

    echo "starting mysql for initdb.d import."
    /usr/bin/mysqld --skip-networking --wsrep_on=OFF &
    pid="$!"
    echo "pid is $pid"

    for i in $(seq 0 $MARIADB_INIT_WAIT_SECONDS); do
      if echo 'SELECT 1' | mysql -u root; then
        break
      fi
      echo 'MySQL init process in progress...'
      sleep $MARIADB_INIT_PERIOD_SECONDS
    done

    if [ "$MARIADB_ROOT_PASSWORD" = "" ]; then
      MARIADB_ROOT_PASSWORD=`pwgen 16 1`
      echo "[i] MySQL root Password: $MARIADB_ROOT_PASSWORD"
    fi

    MARIADB_DATABASE=${MARIADB_DATABASE:-""}
    MARIADB_USER=${MARIADB_USER:-""}
    MARIADB_PASSWORD=${MARIADB_PASSWORD:-""}

    tfile=`mktemp`
    if [ ! -f "$tfile" ]; then
        return 1
    fi

    cat << EOF > $tfile
DROP DATABASE IF EXISTS test;
USE mysql;
ALTER USER root@localhost IDENTIFIED VIA mysql_native_password USING PASSWORD("$MARIADB_ROOT_PASSWORD");
DELETE FROM global_priv WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');
DELETE FROM proxies_priv WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');
FLUSH PRIVILEGES;

EOF

    if [ "$MARIADB_DATABASE" != "" ]; then
      echo "[i] Creating database: $MARIADB_DATABASE"
      echo "CREATE DATABASE IF NOT EXISTS \`$MARIADB_DATABASE\` ;" >> $tfile
      if [ "$MARIADB_USER" != "" ]; then
        echo "[i] Creating user: $MARIADB_USER with password $MARIADB_PASSWORD"
        echo "GRANT ALL ON \`$MARIADB_DATABASE\`.* to '$MARIADB_USER'@'%' IDENTIFIED BY '$MARIADB_PASSWORD';" >> $tfile
      fi
    fi


    cat $tfile
    cat $tfile | mysql -v -u root
    rm -v -f $tfile

    echo "[client]" >> ${MARIADB_DATA_DIR:-/var/lib/mysql}/.my.cnf
    echo "user=root" >> ${MARIADB_DATA_DIR:-/var/lib/mysql}/.my.cnf
    echo "password=${MARIADB_ROOT_PASSWORD}"  >> ${MARIADB_DATA_DIR:-/var/lib/mysql}/.my.cnf
    echo "[mysql]" >> ${MARIADB_DATA_DIR:-/var/lib/mysql}/.my.cnf
    echo "database=${MARIADB_DATABASE}" >> ${MARIADB_DATA_DIR:-/var/lib/mysql}/.my.cnf

    for f in /docker-entrypoint-initdb.d/*; do
      if [ -e "$f" ]; then
        case "$f" in
          *.sh)     echo "$0: running $f"; . "$f" ;;
          *.sql)    echo "$0: running $f"; cat $f| envsubst | tee | mysql -u root -p${MARIADB_ROOT_PASSWORD}; echo ;;
          *)        echo "$0: ignoring $f" ;;
        esac
      fi
    done

    if ! kill -s TERM "$pid" || ! wait "$pid"; then
      echo >&2 'MySQL init process failed.'
      exit 1
    fi

  fi

  echo "done, now starting daemon"
  touch /tmp/mariadb-init-complete

fi
# LCOV_EXCL_END