salsa-ci.yml

---
# Include Salsa-CI as a base
include:
  - https://salsa.debian.org/salsa-ci-team/pipeline/raw/master/salsa-ci.yml
  - https://salsa.debian.org/salsa-ci-team/pipeline/raw/master/pipeline-jobs.yml

# Override Salsa-CI with MariaDB specific variations
variables:
  DEB_BUILD_OPTIONS: "nocheck noautodbgsym"
  RELEASE: sid
  SALSA_CI_DISABLE_REPROTEST: 1
  SALSA_CI_DISABLE_MISSING_BREAKS: 0
  SALSA_CI_DISABLE_RC_BUGS: 1
  SALSA_CI_DISABLE_BUILD_PACKAGE_ALL: 1
  SALSA_CI_DISABLE_BUILD_PACKAGE_ANY: 1
  GIT_SUBMODULE_STRATEGY: recursive
  SALSA_CI_GBP_BUILDPACKAGE_ARGS: "--git-submodules" # did not apply to extract-sources

stages:
  - provisioning
  - build
  - test
  - upgrade in Sid
  - upgrade from Buster/Stretch
  - upgrade extras
  - test extras
  - publish # Stage referenced by Salsa-CI template aptly stanza, so must exist even though not used

build:
  extends: .build-package
  script: &autobake-deb-steps
    # Run Salsa-CI .build-before-script equivalent
    - mkdir -p ${WORKING_DIR} ${CCACHE_WORK_DIR}
    - mv ${CCACHE_WORK_DIR} ${CCACHE_TMP_DIR}
    # Run Salsa-CI .build-script equivalent
    - export CCACHE_DIR="${CCACHE_TMP_DIR}"
    - apt-get update && eatmydata apt-get install --yes --no-install-recommends aptitude devscripts ccache equivs
    - cd ${WORKING_DIR}/${SOURCE_DIR}
    - eatmydata install-build-deps.sh .
    - update-ccache-symlinks; ccache -z # Zero out ccache counters
    - while true; do sleep 600; echo "10 minutes passed" >&2; done & # Progress keeper since build is long and silent
    - debian/autobake-deb.sh |& tail -n 10000 # Keep Gitlab-CI output under 4 MB
    - cd ${WORKING_DIR}
    - rm -rf ${WORKING_DIR}/${SOURCE_DIR}
    - du -shc ${WORKING_DIR}/* # Show total file size of artifacts. Must stay are under 100 MB.
    - ccache -s # Show ccache stats to validate it worked
    - mv ${CCACHE_TMP_DIR} ${CCACHE_WORK_DIR} || true

build buster-backports:
  extends: .build-package
  script:
    - *autobake-deb-steps
  variables:
    RELEASE: buster-backports

# base image missing git
build i386:
  extends: .build-package
  script:
    - apt-get update && apt-get install -y --no-install-recommends git
    - *autobake-deb-steps
  image: $SALSA_CI_IMAGES_BASE_I386
  variables:
    ARCH: 'i386'

build native deb:
  extends: .build-package
  script: &buildpackage-script |
    mkdir -p ${WORKING_DIR} ${CCACHE_WORK_DIR}
    mv ${CCACHE_WORK_DIR} ${CCACHE_TMP_DIR}
    export CCACHE_DIR=${CCACHE_TMP_DIR}
    # Add deb-src entries
    sed -n '/^deb\s/s//deb-src /p' /etc/apt/sources.list > /etc/apt/sources.list.d/deb-src.list
    apt-get update && eatmydata apt-get install --no-install-recommends -y \
     aptitude \
     devscripts \
     ccache \
     equivs \
     build-essential \
     python3
    # Enter source package dir
    cd ${WORKING_DIR}/${SOURCE_DIR}
    # Install package build dependencies
    eatmydata install-build-deps.sh .
    # Generate ccache links
    dpkg-reconfigure ccache
    PATH="/usr/lib/ccache/:${PATH}"
    # Reset ccache stats
    ccache -z
    # Create salsaci user and fix permissions
    useradd salsaci
    chown -R salsaci. ${WORKING_DIR} ${CCACHE_DIR}
    # Define buildlog filename
    BUILD_LOGFILE_SOURCE=$(dpkg-parsechangelog -S Source)
    BUILD_LOGFILE_VERSION=$(dpkg-parsechangelog -S Version)
    BUILD_LOGFILE_VERSION=${BUILD_LOGFILE_VERSION#*:}
    BUILD_LOGFILE_ARCH=$(dpkg --print-architecture)
    BUILD_LOGFILE="${WORKING_DIR}/${BUILD_LOGFILE_SOURCE}_${BUILD_LOGFILE_VERSION}_${BUILD_LOGFILE_ARCH}.build"
    # Build package as user salsaci
    su salsaci -c "eatmydata dpkg-buildpackage ${DB_BUILD_PARAM}" |& OUTPUT_FILENAME=${BUILD_LOGFILE} filter-output
    # Restore PWD to ${WORKING_DIR}
    cd ${WORKING_DIR}
    rm -rf ${WORKING_DIR}/${SOURCE_DIR}
    # Print ccache stats on job log
    ccache -s
    mv ${CCACHE_TMP_DIR} ${CCACHE_WORK_DIR}

piuparts:
  extends: .test-piuparts
  stage: test extras

blhc:
  extends: .test-blhc
  stage: test extras
  needs:
    - job: build native deb
      artifacts: true

# In addition to Salsa-CI, also run these fully MariaDB specific build jobs

# Define snippets used to construct jobs

.test-prepare-container: &test-prepare-container |
  cd ${WORKING_DIR} # Don't repeat this step, it's just cd ./debian/output
  # Enable automatic restarts from maint scripts
  sed -i "s/101/0/g" -i /usr/sbin/policy-rc.d
  # Fake /sbin/runlevel to avoid warnings of "invoke-rc.d: could not determine current runlevel"
  echo -e '#!/bin/sh\necho "N 5"' > /sbin/runlevel; chmod +x /sbin/runlevel
  # Avoid the warnings of "debconf: unable to initialize frontend: Dialog"
  echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
  # Prime the apt cache so later apt commands can run
  apt-get update

.test-verify-initial: &test-verify-initial |
  dpkg -l | grep -iE 'maria|mysql|galera' || true # List installed
  service mysql status || service mariadb status # Early MariaDB 10.5 only had 'mariadb'
  mysql --skip-column-names -e "select @@version, @@version_comment" # Show version
  echo 'SHOW DATABASES;' | mysql # List databases before upgrade
  mysql -e "SELECT Host, User, plugin,authentication_string FROM user;" mysql
  mysql -e "SELECT * FROM plugin;" mysql

.test-enable-sid-repos: &test-enable-sid-repos |
  # Replace any old repos with just Sid
  echo 'deb http://deb.debian.org/debian sid main' > /etc/apt/sources.list
  # Upgrade minimal stack first
  apt-get update
  apt-get install -y apt

.test-install: &test-install |
  # Install MariaDB built in this commit
  apt-get install -y ./*.deb
  # Verify installation of MariaDB built in this commit
  dpkg -l | grep -iE 'maria|mysql|galera' || true # List installed
  mariadb --version # Client version

.test-verify-final: &test-verify-final |
  mkdir -p debug # Ensure dir exists before using it
  find /var/lib/mysql -ls > debug/var-lib-mysql.list || true # Ignore errors about "no such file or directory"
  cp -ra /etc/mysql debug/etc-mysql
  cp -ra /var/log/mysql debug/var-log-mysql
  mariadb --skip-column-names -e "select @@version, @@version_comment" # Show version
  echo 'SHOW DATABASES;' | mariadb # List databases
  mariadb -e "create database test; use test; create table t(a int primary key) engine=innodb; insert into t values (1); select * from t; drop table t; drop database test;" # Test that InnoDB works
  mariadb -e "SELECT Host, User, plugin,authentication_string FROM user;" mysql
  mariadb -e "SELECT * FROM plugin;" mysql

.test-verify-libs: &test-verify-libs
  # Don't use a collapsed command as Gitlab-CI would hide each command from the output
  - ldconfig -p | grep -e mariadb -e mysql
  - pkg-config --list-all
  - pkg-config --cflags --libs mysqlclient
  - pkg-config --cflags --libs libmariadb
  - pkg-config --cflags --libs mariadb
  - apt-get install -y --no-install-recommends g++
  - |
    # Build a test binary that depends on libmysqlclient
    cat > b933063.cpp <<EOF
    #include <iostream>
    #include <mysql/mysql.h>
    #include <stdexcept>
    int main()
    {
      MYSQL h;
      if (!mysql_init(&h)
        || mysql_options(&h, MYSQL_READ_DEFAULT_GROUP, "")
        // || mysql_options(&h, MYSQL_SET_CHARSET_NAME, "utf8mb4")
        || !mysql_real_connect(&h, "", "", NULL, "", 0, NULL, 0))
        throw std::runtime_error(mysql_error(&h));
      std::string q = "show variables like '%char%'";
      if (mysql_real_query(&h, q.data(), q.size()))
        throw std::runtime_error(mysql_error(&h));
      MYSQL_RES* result = mysql_store_result(&h);
      if (!result && mysql_errno(&h))
        throw std::runtime_error(mysql_error(&h));
      while (MYSQL_ROW row = mysql_fetch_row(result))
      {
        std::cout << row[0] << ": " << row[1] << "\n";
      }
      return 0;
    }
    EOF
    apt-get install -y ./*.deb # Server must be installed for client to connect
    echo "Testing -l mysqlclient"
    g++ b933063.cpp -l mysqlclient && ./a.out | tee result
    if grep --quiet latin result; then echo "ERROR: Charset latin found!"; exit 1; fi
    echo "Testing -l mariadbclient"
    g++ b933063.cpp -l mariadbclient && ./a.out | tee result
    if grep --quiet latin result; then echo "ERROR: Charset latin found!"; exit 1; fi

.test-install-all-libs: &test-install-all-libs
  - apt-get install -y ./libmariadb3_*.deb ./libmariadb-dev_*.deb ./libmariadb-dev-compat_*.deb ./libmariadbd19_*.deb ./libmariadbd-dev_*.deb ./mariadb-common_*.deb

fresh install:
  stage: test
  needs:
    - job: build
      artifacts: true
  image: debian:${RELEASE}
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - *test-install
    - service mariadb status # There is no init.d/mysql in MariaDB 10.7
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb-10.7 Sid upgrade:
  stage: upgrade in Sid
  needs:
    - job: build
      artifacts: true
  image: debian:${RELEASE}
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - *test-install
    - service mariadb status # There is no init.d/mysql in MariaDB 10.7
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb-10.3 Buster to mariadb-10.7 upgrade:
  stage: upgrade from Buster/Stretch
  needs:
    - job: build
      artifacts: true
  image: debian:buster
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    # Install everything MariaDB currently in Debian Buster
    - apt-get install -y 'default-mysql*' 'mariadb-*' 'libmariadb*'
    # Verify installation of MariaDB from Buster
    - *test-verify-initial
    - *test-enable-sid-repos
    - *test-install
    - service mysql status
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb-10.1 Stretch to mariadb-10.7 upgrade:
  stage: upgrade from Buster/Stretch
  needs:
    - job: build
      artifacts: true
  image: debian:stretch
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    # Install almost everything currently in Debian Stretch,
    # omitting libmariadbclient-dev-compat as it would conflict
    - apt-get install -y 'default-mysql*' 'mariadb-*' 'libmariadbd*' 'libmariadbclient*'
    # Verify installation of MariaDB from Stretch
    - *test-verify-initial
    - *test-enable-sid-repos
    - *test-install
    - service mysql status
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

test basic features:
  stage: test
  needs:
    - job: build
      artifacts: true
  image: debian:${RELEASE}
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - *test-install
    - service mariadb status # There is no init.d/mysql in MariaDB 10.7
    - *test-verify-final
    - |
      # Print info about server
      mariadb --skip-column-names -e "select @@version, @@version_comment"
      mariadb --skip-column-names -e "select engine, support, transactions, savepoints from information_schema.engines order by engine" | sort
      mariadb --skip-column-names -e "select plugin_name, plugin_status, plugin_type, plugin_library, plugin_license from information_schema.all_plugins order by plugin_name, plugin_library"
      # Test various features
      mariadb -e "CREATE DATABASE db"
      mariadb -e "CREATE TABLE db.t_innodb(a1 SERIAL, c1 CHAR(8)) ENGINE=InnoDB; INSERT INTO db.t_innodb VALUES (1,'"'"'foo'"'"'),(2,'"'"'bar'"'"')"
      mariadb -e "CREATE TABLE db.t_myisam(a2 SERIAL, c2 CHAR(8)) ENGINE=MyISAM; INSERT INTO db.t_myisam VALUES (1,'"'"'foo'"'"'),(2,'"'"'bar'"'"')"
      mariadb -e "CREATE TABLE db.t_aria(a3 SERIAL, c3 CHAR(8)) ENGINE=Aria; INSERT INTO db.t_aria VALUES (1,'"'"'foo'"'"'),(2,'"'"'bar'"'"')"
      mariadb -e "CREATE TABLE db.t_memory(a4 SERIAL, c4 CHAR(8)) ENGINE=MEMORY; INSERT INTO db.t_memory VALUES (1,'"'"'foo'"'"'),(2,'"'"'bar'"'"')"
      mariadb -e "CREATE ALGORITHM=MERGE VIEW db.v_merge AS SELECT * FROM db.t_innodb, db.t_myisam, db.t_aria"
      mariadb -e "CREATE ALGORITHM=TEMPTABLE VIEW db.v_temptable AS SELECT * FROM db.t_innodb, db.t_myisam, db.t_aria"
      mariadb -e "CREATE PROCEDURE db.p() SELECT * FROM db.v_merge"
      mariadb -e "CREATE FUNCTION db.f() RETURNS INT DETERMINISTIC RETURN 1"
      # Test that the features still work (this step can be done e.g. after an upgrade)
      mariadb -e "SHOW TABLES IN db"
      mariadb -e "SELECT * FROM db.t_innodb; INSERT INTO db.t_innodb VALUES (3,'"'"'foo'"'"'),(4,'"'"'bar'"'"')"
      mariadb -e "SELECT * FROM db.t_myisam; INSERT INTO db.t_myisam VALUES (3,'"'"'foo'"'"'),(4,'"'"'bar'"'"')"
      mariadb -e "SELECT * FROM db.t_aria; INSERT INTO db.t_aria VALUES (3,'"'"'foo'"'"'),(4,'"'"'bar'"'"')"
      mariadb -e "SELECT * FROM db.t_memory; INSERT INTO db.t_memory VALUES (3,'"'"'foo'"'"'),(4,'"'"'bar'"'"')"
      mariadb -e "SELECT COUNT(*) FROM db.v_merge"
      mariadb -e "SELECT COUNT(*) FROM db.v_temptable"
      mariadb -e "CALL db.p()"
      mariadb -e "SELECT db.f()"
    - |
      # Test TLS connections
      dpkg -l | grep -i -e tls -e ssl
      # Create user for TCP connection, must have password
      mariadb -e "SET PASSWORD FOR 'mysql'@'localhost' = PASSWORD('asdf234');"
      cat <<EOF > /root/.my.cnf
      [client]
      user=mysql
      password=asdf234
      protocol=tcp
      EOF
      export CERT_PATH=/usr/share/mysql/mysql-test/std_data
      openssl verify -CAfile $CERT_PATH/cacert.pem $CERT_PATH/server-cert.pem
      openssl x509 -subject -issuer -noout -in $CERT_PATH/cacert.pem
      openssl x509 -subject -issuer -noout -in $CERT_PATH/server-cert.pem
      cat <<EOF > /etc/mysql/mariadb.conf.d/tls.cnf
      [client-server]
      ssl = on
      ssl-ca = $CERT_PATH/cacert.pem
      ssl-cert = $CERT_PATH/server-cert.pem
      ssl-key = $CERT_PATH/server-key.pem
      [server]
      require-secure-transport = on
      [client]
      ssl-verify-server-cert = on
      EOF
      service mariadb restart
      mariadb -Bse 'STATUS' | tee result
      # Ensure important values present, otherwise fail job
      grep --quiet "localhost via TCP/IP" result
      mariadb -Bse 'SHOW VARIABLES' | grep -e tls -e ssl | tee result
      grep --quiet "have_ssl	YES" result
      grep --quiet TLSv1.3 result
      mariadb -Bse 'SHOW SESSION STATUS' | grep -i -e tls -e ssl | tee result
      grep --quiet TLSv1.3 result
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

# Build a piece of software that was designed for libmysqlclient-dev but using the
# libmariadb-dev-compat layer. Should always end up using libmariadb.so.3 run-time.
build mariadbclient consumer Python-MySQLdb:
  stage: test
  needs:
    - job: build
      artifacts: true
  image: debian:${RELEASE}
  script:
    - *test-prepare-container
    # Run each step separately to avoitda 800+ lines chunk that lacks the
    # commands themselves printed and Gitlab-CI cutting off the output
    - apt-get install -y pkg-config ./libmariadb-dev*.deb ./libmariadb3_*.deb ./mariadb-common*.deb
    - pkg-config --cflags --libs mysqlclient # See what MySQLdb builds with
    - apt-get install -y python3-pip
    - pip3 install mysqlclient # Compiles module against libmysqlclient
    - apt-get purge -y libmariadb-dev # Not needed for run-time
    - python3 -c "import MySQLdb; print(MySQLdb.get_client_info())"
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

libmysql* to libmariadb* upgrade:
  stage: upgrade in Sid
  needs:
    - job: build
      artifacts: true
  image: debian:${RELEASE}
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    # Install all libmysql* available in Debian unstable
    - apt-get install -y pkg-config libmysqlclient-dev
    - pkg-config --list-all
    - pkg-config --cflags mysqlclient # mysqlclient.pc from original package
    - apt-get install -y ./libmariadb3_*.deb ./mariadb-common_*.deb
    - pkg-config --list-all
    - apt-get install -y ./libmariadb-dev_*.deb
    - pkg-config --list-all
    - apt-get install -y ./libmariadb-dev-compat_*.deb
    - pkg-config --cflags mysqlclient # mysqlclient.pc from compat package
    - pkg-config --list-all
    - apt-get install -y ./libmariadbd19_*.deb
    - pkg-config --list-all
    - apt-get install -y ./libmariadbd-dev_*.deb
    - pkg-config --list-all
    - apt-get install -y default-libmysqlclient-dev default-libmysqld-dev
    - *test-verify-libs
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

default-libmysqlclient-dev Sid upgrade:
  stage: upgrade in Sid
  needs:
    - job: build
      artifacts: true
  image: debian:${RELEASE}
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt-get install -y pkg-config default-libmysqlclient-dev default-libmysqld-dev
    - pkg-config --list-all
    - *test-install-all-libs
    - *test-verify-libs
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

default-libmysqlclient-dev Buster upgrade:
  stage: upgrade from Buster/Stretch
  needs:
    - job: build
      artifacts: true
  image: debian:buster
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt-get install -y pkg-config default-libmysqlclient-dev
    - pkg-config --list-all
    - *test-enable-sid-repos
    - *test-install-all-libs
    - *test-verify-libs
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

default-libmysqlclient-dev Stretch upgrade:
  stage: upgrade from Buster/Stretch
  needs:
    - job: build
      artifacts: true
  image: debian:stretch
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt-get install -y pkg-config default-libmysqlclient-dev
    - pkg-config --list-all
    - *test-enable-sid-repos
    - *test-install-all-libs
    - *test-verify-libs
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb-connector-c Stretch upgrade:
  stage: upgrade from Buster/Stretch
  needs:
    - job: build
      artifacts: true
  image: debian:stretch
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt-get install -y pkg-config libmariadb2 libmariadb-dev libmariadb-dev-compat
    - pkg-config --list-all
    - *test-enable-sid-repos
    - *test-install-all-libs
    - *test-verify-libs
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

# Upgrading from MySQL 8.0 with datadir in place is not possible. Users need to do a data dump.
# The Debian maintainer scripts detect this situation and simply moves old datadir aside and start fresh.
mysql-8.0 Sid to mariadb-10.7 upgrade:
  stage: upgrade in Sid
  needs:
    - job: build
      artifacts: true
  image: debian:sid
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    # The postinst fails often if 'ps' is missing from system, so install procps
    - apt-get install -y procps mysql-server 'libmysqlc*'
    - *test-verify-initial
    - *test-install
    - service mysql status
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

# Upgrading from MySQL 8.0 with datadir in place is not possible. Users need to do a data dump.
# The Debian maintainer scripts detect this situation and simply moves old datadir aside and start fresh.
mysql-8.0 Focal to mariadb-10.7 upgrade:
  stage: upgrade extras
  needs:
    - job: build buster-backports
      artifacts: true
  image: debian:buster
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    # Add Ubuntu Focal archive keys and repository
    - apt-get install --no-install-recommends --yes gpg gpg-agent dirmngr ca-certificates # Bare minimal (<4MB) for apt-key to work
    - apt-key adv --recv-keys --keyserver hkps://keyserver.ubuntu.com:443 871920D1991BC93C 3B4FE6ACC0B21F32
    - echo 'deb http://archive.ubuntu.com/ubuntu/ focal main restricted' > /etc/apt/sources.list.d/ubuntu.list
    - apt-get update
    # First install often fail due to bug in mysql-8.0
    - apt-get install -y mysql-server 'libmysqlc*' || true
    - sleep 10 && apt-get install -f
    - *test-verify-initial
    # Enable backports to make galera-4 available
    - echo 'deb http://deb.debian.org/debian buster-backports main' > /etc/apt/sources.list.d/backports.list && apt-get update
    - *test-install
    - service mysql status
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/


mariadb.org-10.5 to mariadb-10.7 upgrade:
  stage: upgrade extras
  needs:
    - job: build
      artifacts: true
  image: debian:sid
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt install -y curl
    - curl -sS https://mariadb.org/mariadb_release_signing_key.asc -o /etc/apt/trusted.gpg.d/mariadb.asc
    - echo 'deb http://mirror.one.com/mariadb/repo/10.5/debian sid main' > /etc/apt/sources.list.d/mariadb.list
    - apt-get update
    # The 10.5.9 release is missing mariadb-plugin-columnstore, define all other packages but it to avoid hitting the error:
    #   The following packages have unmet dependencies:
    #   mariadb-plugin-columnstore : Depends: mariadb-server-10.5 (= 1:10.5.8+maria~sid) but 1:10.5.9+maria~sid is to be installed
    - apt-get install -y libmariadb3 'libmariadb-*' 'libmariadbd*' 'mariadb-c*' 'mariadb-b*' 'mariadb-s*' 'mariadb-t*' 'mariadb-plugin-con*' 'mariadb-plugin-cr*' 'mariadb-plugin-g*' 'mariadb-plugin-m*' 'mariadb-plugin-o*' 'mariadb-plugin-s*'
    # Once 10.5.10 is out, revert back to:
    # Package libmariadbclient-dev from mariadb.org conflicts with libmariadb-dev in Sid, so cannot use wildcard that would include it
    #- apt-get install -y 'mariadb*' libmariadb3 'libmariadb-*' 'libmariadbd*'
    - *test-verify-initial
    # Install MariaDB built in this commit
    # Force downgrades so our version installs on top of upstream revision, e.g. 1:10.5.5-1 vs 1:10.5.5+mariadb~sid
    - apt-get install -y --allow-downgrades ./*.deb
    # Verify installation of MariaDB built in this commit
    - dpkg -l | grep -iE 'maria|mysql|galera' || true # List installed
    - mariadb --version # Client version
    - service mariadb status # There is no init.d/mysql in MariaDB 10.5
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb.org-10.4 to mariadb-10.7 upgrade:
  stage: upgrade extras
  needs:
    - job: build
      artifacts: true
  image: debian:sid
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt install -y curl systemctl # systemctl shim needed on platforms that don't have systemd
    - curl -sS https://mariadb.org/mariadb_release_signing_key.asc -o /etc/apt/trusted.gpg.d/mariadb.asc
    - echo 'deb http://mirror.one.com/mariadb/repo/10.4/debian sid main' > /etc/apt/sources.list.d/mariadb.list
    - apt-get update
    - apt-get install -y mariadb-server-10.4
    # MariaDB.org version of 10.4 and early 10.5 do not install an init file, so
    # it must be installed here manually
    - cp /usr/share/mysql/mysql.init /etc/init.d/mysql; chmod +x /etc/init.d/mysql; service mysql start; sleep 5
    - *test-verify-initial
    - *test-install
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - service mysql status
    - service mariadb status
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb.org-10.3 to mariadb-10.7 upgrade:
  stage: upgrade extras
  needs:
    - job: build
      artifacts: true
  image: debian:sid
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt install -y curl
    - curl -sS https://mariadb.org/mariadb_release_signing_key.asc -o /etc/apt/trusted.gpg.d/mariadb.asc
    - echo 'deb http://mirror.one.com/mariadb/repo/10.3/debian sid main' > /etc/apt/sources.list.d/mariadb.list
    - apt-get update
    - apt-get install -y mariadb-server-10.3
    # Verify initial state before upgrade
    - dpkg -l | grep -iE 'maria|mysql|galera' || true # List installed
    - service mysql status
    # prepending with --defaults-file=/etc/mysql/debian.cnf is needed in upstream 5.5–10.3
    - mysql --defaults-file=/etc/mysql/debian.cnf --skip-column-names -e "SELECT @@version, @@version_comment"
    - echo 'SHOW DATABASES;' | mysql --defaults-file=/etc/mysql/debian.cnf
    - mysql --defaults-file=/etc/mysql/debian.cnf -e "SELECT Host,User,plugin,authentication_string FROM user;" mysql
    - mysql --defaults-file=/etc/mysql/debian.cnf -e "SELECT * FROM plugin;" mysql
    - *test-install
    - service mysql status
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mariadb.org-10.2 to mariadb-10.7 upgrade:
  stage: upgrade extras
  needs:
    - job: build
      artifacts: true
  image: debian:sid
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - apt install -y curl
    - curl -sS https://mariadb.org/mariadb_release_signing_key.asc -o /etc/apt/trusted.gpg.d/mariadb.asc
    - echo 'deb http://mirror.one.com/mariadb/repo/10.2/debian sid main' > /etc/apt/sources.list.d/mariadb.list
    - apt-get update
    - apt-get install -y mariadb-server-10.2
    # Verify initial state before upgrade
    - dpkg -l | grep -iE 'maria|mysql|galera' || true # List installed
    - service mysql status
    # prepending with --defaults-file=/etc/mysql/debian.cnf is needed in upstream 5.5–10.3
    - mysql --defaults-file=/etc/mysql/debian.cnf --skip-column-names -e "SELECT @@version, @@version_comment"
    - echo 'SHOW DATABASES;' | mysql --defaults-file=/etc/mysql/debian.cnf
    - mysql --defaults-file=/etc/mysql/debian.cnf -e "SELECT * FROM mysql.global_priv; SHOW CREATE USER root@localhost; SHOW CREATE USER 'mariadb.sys'@localhost"
    - mysql --defaults-file=/etc/mysql/debian.cnf -e "SELECT * FROM mysql.plugin; SHOW PLUGINS"
    - *test-install
    - service mysql status
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

mysql.com-5.7 to mariadb-10.7 upgrade:
  stage: upgrade extras
  needs:
    - job: build buster-backports
      artifacts: true
  image: debian:buster
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - |
      apt-get install --no-install-recommends --yes gpg gpg-agent dirmngr ca-certificates # Bare minimal (<4MB) for apt-key to work
      apt-key adv --recv-keys --keyserver hkps://keyserver.ubuntu.com:443 8C718D3B5072E1F5
      echo 'deb https://repo.mysql.com/apt/debian/ buster mysql-5.7' > /etc/apt/sources.list.d/mysql.list
      apt-get update
      apt-get install -y 'mysql*' 'libmysqlc*'
    - *test-verify-initial
    # Enable backports to make galera-4 available
    - echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list.d/backports.list && apt-get update
    - *test-install
    - service mysql status
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/

percona-xtradb-5.7 to mariadb-10.7 upgrade (MDEV-22679):
  stage: upgrade extras
  needs:
    - job: build buster-backports
      artifacts: true
  image: debian:buster
  artifacts:
    when: always
    name: "$CI_BUILD_NAME"
    paths:
      - ${WORKING_DIR}/debug
  script:
    - *test-prepare-container
    - |
      apt-get install --no-install-recommends --yes gpg gpg-agent dirmngr ca-certificates # Bare minimal (<4MB) for apt-key to work
      apt-key adv --recv-keys --keyserver hkps://keyserver.ubuntu.com:443 9334A25F8507EFA5
      echo 'deb https://repo.percona.com/apt/ buster main' > /etc/apt/sources.list.d/mysql.list
      apt-get update
      apt-get install -y percona-xtradb-cluster-full-57 percona-xtrabackup-24 percona-toolkit pmm2-client
    - service mysql status
    - *test-verify-initial
    # Enable backports to make galera-4 available
    - echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list.d/backports.list && apt-get update
    - *test-install
    - service mysql status
    - sleep 5 # Give the mysql_upgrade a bit of time to complete before querying the server
    - *test-verify-final
  variables:
    GIT_STRATEGY: none
  except:
    variables:
      - $CI_COMMIT_TAG != null && $SALSA_CI_ENABLE_PIPELINE_ON_TAGS !~ /^(1|yes|true)$/