photoprism/docker/tidb/entrypoint.sh

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#!/bin/bash
set -eo pipefail
shopt -s nullglob
# if command starts with an option, prepend tidb-server
if [ "${1:0:1}" = '-' ]; then
set -- tidb-server "$@"
fi
# skip setup if they want an option that stops tidb-server
wantHelp=
for arg; do
case "$arg" in
-'?'|--help|--print-defaults|-V|--version)
wantHelp=1
break
;;
esac
done
# usage: file_env VAR [DEFAULT]
# ie: file_env 'XYZ_DB_PASSWORD' 'example'
# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
# "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
file_env() {
local var="$1"
local fileVar="${var}_FILE"
local def="${2:-}"
if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
exit 1
fi
local val="$def"
if [ "${!var:-}" ]; then
val="${!var}"
elif [ "${!fileVar:-}" ]; then
val="$(< "${!fileVar}")"
fi
export "$var"="$val"
unset "$fileVar"
}
# usage: process_init_file FILENAME MYSQLCOMMAND...
# ie: process_init_file foo.sh mysql -uroot
# (process a single initializer file, based on its extension. we define this
# function here, so that initializer scripts (*.sh) can use the same logic,
# potentially recursively, or override the logic used in subsequent calls)
process_init_file() {
local f="$1"; shift
local mysql=( "$@" )
case "$f" in
*.sh) echo "$0: running $f"; . "$f" ;;
*.sql) echo "$0: running $f"; "${mysql[@]}" < "$f"; echo ;;
*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${mysql[@]}"; echo ;;
*) echo "$0: ignoring $f" ;;
esac
echo
}
_check_config() {
toRun=( "$@" --verbose --help )
if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
cat >&2 <<-EOM
ERROR: tidb-server failed while attempting to check config
command was: "${toRun[*]}"
$errors
EOM
exit 1
fi
}
# Fetch value from server config
# We use tidb-server --verbose --help instead of my_print_defaults because the
# latter only show values present in config files, and not server defaults
_get_config() {
local conf="$1"; shift
"$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null \
| awk '$1 == "'"$conf"'" && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
# match "datadir /some/path with/spaces in/it here" but not "--xyz=abc\n datadir (xyz)"
}
# allow the container to be started with `--user`
if [ "$1" = 'tidb-server' -a -z "$wantHelp" -a "$(id -u)" = '0' ]; then
_check_config "$@"
DATADIR="$(_get_config 'datadir' "$@")"
mkdir -p "$DATADIR"
chown -R mysql:mysql "$DATADIR"
exec mysql "$BASH_SOURCE" "$@"
fi
if [ "$1" = 'tidb-server' -a -z "$wantHelp" ]; then
# still need to check config, container may have started with --user
_check_config "$@"
# Get config
DATADIR="$(_get_config 'datadir' "$@")"
if [ ! -d "$DATADIR/mysql" ]; then
file_env 'TIDB_ROOT_PASSWORD'
if [ -z "$TIDB_ROOT_PASSWORD" -a -z "$TIDB_ALLOW_EMPTY_PASSWORD" -a -z "$TIDB_RANDOM_ROOT_PASSWORD" ]; then
echo >&2 'error: database is uninitialized and password option is not specified '
echo >&2 ' You need to specify one of TIDB_ROOT_PASSWORD, TIDB_ALLOW_EMPTY_PASSWORD and TIDB_RANDOM_ROOT_PASSWORD'
exit 1
fi
mkdir -p "$DATADIR"
echo 'Initializing database'
"$@" --initialize-insecure
echo 'Database initialized'
if command -v mysql_ssl_rsa_setup > /dev/null && [ ! -e "$DATADIR/server-key.pem" ]; then
# https://github.com/mysql/mysql-server/blob/23032807537d8dd8ee4ec1c4d40f0633cd4e12f9/packaging/deb-in/extra/mysql-systemd-start#L81-L84
echo 'Initializing certificates'
mysql_ssl_rsa_setup --datadir="$DATADIR"
echo 'Certificates initialized'
fi
SOCKET="$(_get_config 'socket' "$@")"
"$@" --socket="${SOCKET}" &
pid="$!"
mysql=( mysql --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" )
for i in {30..0}; do
if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
break
fi
echo 'MySQL init process in progress...'
sleep 1
done
if [ "$i" = 0 ]; then
echo >&2 'MySQL init process failed.'
exit 1
fi
if [ -z "$TIDB_INITDB_SKIP_TZINFO" ]; then
# sed is for https://bugs.mysql.com/bug.php?id=20545
mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
fi
if [ ! -z "$TIDB_RANDOM_ROOT_PASSWORD" ]; then
export TIDB_ROOT_PASSWORD="$(pwgen -1 32)"
echo "GENERATED ROOT PASSWORD: $TIDB_ROOT_PASSWORD"
fi
rootCreate=
# default root to listen for connections from anywhere
file_env 'TIDB_ROOT_HOST' '%'
if [ ! -z "$TIDB_ROOT_HOST" -a "$TIDB_ROOT_HOST" != 'localhost' ]; then
# no, we don't care if read finds a terminating character in this heredoc
# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
read -r -d '' rootCreate <<-EOSQL || true
CREATE USER 'root'@'${TIDB_ROOT_HOST}' IDENTIFIED BY '${TIDB_ROOT_PASSWORD}' ;
GRANT ALL ON *.* TO 'root'@'${TIDB_ROOT_HOST}' WITH GRANT OPTION ;
EOSQL
fi
"${mysql[@]}" <<-EOSQL
-- What's done in this file shouldn't be replicated
-- or products like mysql-fabric won't work
SET @@SESSION.SQL_LOG_BIN=0;
ALTER USER 'root'@'localhost' IDENTIFIED BY '${TIDB_ROOT_PASSWORD}' ;
GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
${rootCreate}
DROP DATABASE IF EXISTS test ;
FLUSH PRIVILEGES ;
EOSQL
if [ ! -z "$TIDB_ROOT_PASSWORD" ]; then
mysql+=( -p"${TIDB_ROOT_PASSWORD}" )
fi
file_env 'TIDB_DATABASE'
if [ "$TIDB_DATABASE" ]; then
echo "CREATE DATABASE IF NOT EXISTS \`$TIDB_DATABASE\` ;" | "${mysql[@]}"
mysql+=( "$TIDB_DATABASE" )
fi
file_env 'TIDB_USER'
file_env 'TIDB_PASSWORD'
if [ "$TIDB_USER" -a "$TIDB_PASSWORD" ]; then
echo "CREATE USER '$TIDB_USER'@'%' IDENTIFIED BY '$TIDB_PASSWORD' ;" | "${mysql[@]}"
if [ "$TIDB_DATABASE" ]; then
echo "GRANT ALL ON \`$TIDB_DATABASE\`.* TO '$TIDB_USER'@'%' ;" | "${mysql[@]}"
fi
echo 'FLUSH PRIVILEGES ;' | "${mysql[@]}"
fi
echo
ls /docker-entrypoint-initdb.d/ > /dev/null
for f in /docker-entrypoint-initdb.d/*; do
process_init_file "$f" "${mysql[@]}"
done
if [ ! -z "$TIDB_ONETIME_PASSWORD" ]; then
"${mysql[@]}" <<-EOSQL
ALTER USER 'root'@'%' PASSWORD EXPIRE;
EOSQL
fi
if ! kill -s TERM "$pid" || ! wait "$pid"; then
echo >&2 'MySQL init process failed.'
exit 1
fi
echo
echo 'MySQL init process done. Ready for start up.'
echo
fi
fi
exec "$@"