/usr/bin/wsrep_sst_common is in percona-xtradb-cluster-server-5.7 5.7.20-29.24-0ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
# MA 02110-1301 USA.
# This is a common command line parser to be sourced by other SST scripts
set -u
WSREP_SST_OPT_BYPASS=0
WSREP_SST_OPT_BINLOG=""
WSREP_SST_OPT_CONF_SUFFIX=""
WSREP_SST_OPT_DATA=""
WSREP_SST_OPT_AUTH=${WSREP_SST_OPT_AUTH:-}
WSREP_SST_OPT_USER=${WSREP_SST_OPT_USER:-}
WSREP_SST_OPT_PSWD=${WSREP_SST_OPT_PSWD:-}
WSREP_LOG_DEBUG=""
while [ $# -gt 0 ]; do
case "$1" in
'--address')
readonly WSREP_SST_OPT_ADDR="$2"
#
# Break address string into host:port/path parts
#
if echo $WSREP_SST_OPT_ADDR | grep -qe '^\[.*\]'
then
# IPv6 notation
readonly WSREP_SST_OPT_HOST=${WSREP_SST_OPT_ADDR/\]*/\]}
readonly WSREP_SST_OPT_HOST_UNESCAPED=$(echo $WSREP_SST_OPT_HOST | \
cut -d '[' -f 2 | cut -d ']' -f 1)
else
# "traditional" notation
readonly WSREP_SST_OPT_HOST=${WSREP_SST_OPT_ADDR%%[:/]*}
fi
readonly WSREP_SST_OPT_PORT=$(echo $WSREP_SST_OPT_ADDR | \
cut -d ']' -f 2 | cut -s -d ':' -f 2 | cut -d '/' -f 1)
readonly WSREP_SST_OPT_PATH=${WSREP_SST_OPT_ADDR#*/}
shift
;;
'--bypass')
WSREP_SST_OPT_BYPASS=1
;;
'--datadir')
readonly WSREP_SST_OPT_DATA="$2"
shift
;;
'--defaults-file')
readonly WSREP_SST_OPT_CONF="$2"
shift
;;
'--defaults-group-suffix')
WSREP_SST_OPT_CONF_SUFFIX="$2"
shift
;;
'--host')
readonly WSREP_SST_OPT_HOST="$2"
shift
;;
'--local-port')
readonly WSREP_SST_OPT_LPORT="$2"
shift
;;
'--parent')
readonly WSREP_SST_OPT_PARENT="$2"
shift
;;
'--password')
WSREP_SST_OPT_PSWD="$2"
shift
;;
'--port')
readonly WSREP_SST_OPT_PORT="$2"
shift
;;
'--role')
readonly WSREP_SST_OPT_ROLE="$2"
shift
;;
'--socket')
readonly WSREP_SST_OPT_SOCKET="$2"
shift
;;
'--user')
WSREP_SST_OPT_USER="$2"
shift
;;
'--gtid')
readonly WSREP_SST_OPT_GTID="$2"
shift
;;
'--binlog')
WSREP_SST_OPT_BINLOG="$2"
shift
;;
*) # must be command
# usage
# exit 1
;;
esac
shift
done
readonly WSREP_SST_OPT_BYPASS
readonly WSREP_SST_OPT_BINLOG
readonly WSREP_SST_OPT_CONF_SUFFIX
#
# user can specify xtrabackup specific settings that will be used during sst
# process like encryption, etc.....
# parse such configuration option. (group for xb settings is [sst] in my.cnf
#
# 1st param: group : name of the config file section, e.g. mysqld
# 2nd param: var : name of the variable in the section, e.g. server-id
# 3rd param: - : default value for the param
parse_cnf()
{
local group=$1
local var=$2
local reval=""
# print the default settings for given group using my_print_default.
# normalize the variable names specified in cnf file (user can use _ or - for example log-bin or log_bin)
# then grep for needed variable
# finally get the variable value (if variables has been specified multiple time use the last value only)
# look in group+suffix
if [[ -n $WSREP_SST_OPT_CONF_SUFFIX ]]; then
reval=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF "${group}${WSREP_SST_OPT_CONF_SUFFIX}" | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
fi
# look in group
if [[ -z $reval ]]; then
reval=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF $group | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
fi
# use default if we haven't found a value
if [[ -z $reval ]]; then
[[ -n $3 ]] && reval=$3
fi
echo $reval
}
#
# Converts an input string into a boolean "on", "off"
# Converts:
# "on", "true", "1" -> "on" (case insensitive)
# "off", "false", "0" -> "off" (case insensitive)
# All other values : -> default_value
#
# 1st param: input value
# 2nd param: default value
normalize_boolean()
{
local input_value=$1
local default_value=$2
local return_value=$default_value
if [[ "$input_value" == "1" ]]; then
return_value="on"
elif [[ "$input_value" =~ ^[Oo][Nn]$ ]]; then
return_value="on"
elif [[ "$input_value" =~ ^[Tt][Rr][Uu][Ee]$ ]]; then
return_value="on"
elif [[ "$input_value" == "0" ]]; then
return_value="off"
elif [[ "$input_value" =~ ^[Oo][Ff][Ff]$ ]]; then
return_value="off"
elif [[ "$input_value" =~ ^[Ff][Aa][Ll][Ss][Ee]$ ]]; then
return_value="off"
fi
echo $return_value
}
# try to use my_print_defaults, mysql and mysqldump that come with the sources
# (for MTR suite)
SCRIPTS_DIR="$(cd $(dirname "$0"); pwd -P)"
EXTRA_DIR="$SCRIPTS_DIR/../extra"
CLIENT_DIR="$SCRIPTS_DIR/../client"
if [ -x "$CLIENT_DIR/mysql" ]; then
MYSQL_CLIENT="$CLIENT_DIR/mysql"
else
MYSQL_CLIENT=$(which mysql)
fi
if [ -x "$CLIENT_DIR/mysqldump" ]; then
MYSQLDUMP="$CLIENT_DIR/mysqldump"
else
MYSQLDUMP=$(which mysqldump)
fi
if [ -x "$SCRIPTS_DIR/my_print_defaults" ]; then
MY_PRINT_DEFAULTS="$SCRIPTS_DIR/my_print_defaults"
elif [ -x "$EXTRA_DIR/my_print_defaults" ]; then
MY_PRINT_DEFAULTS="$EXTRA_DIR/my_print_defaults"
else
MY_PRINT_DEFAULTS=$(which my_print_defaults)
fi
wsrep_auth_not_set()
{
[ -z "$WSREP_SST_OPT_AUTH" -o "$WSREP_SST_OPT_AUTH" = "(null)" ]
}
# For Bug:1200727
if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF sst | grep -q "wsrep_sst_auth"
then
if wsrep_auth_not_set
then
WSREP_SST_OPT_AUTH=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF sst | grep -- "--wsrep_sst_auth" | cut -d= -f2)
fi
fi
readonly WSREP_SST_OPT_AUTH
# Splitting AUTH into potential user:password pair
if ! wsrep_auth_not_set
then
readonly AUTH_VEC=(${WSREP_SST_OPT_AUTH//:/ })
WSREP_SST_OPT_USER="${AUTH_VEC[0]:-}"
WSREP_SST_OPT_PSWD="${AUTH_VEC[1]:-}"
fi
readonly WSREP_SST_OPT_USER
readonly WSREP_SST_OPT_PSWD
if [ -n "${WSREP_SST_OPT_DATA:-}" ]
then
SST_PROGRESS_FILE="$WSREP_SST_OPT_DATA/sst_in_progress"
else
SST_PROGRESS_FILE=""
fi
WSREP_LOG_DEBUG=$(parse_cnf sst wsrep_debug "")
if [ -z "$WSREP_LOG_DEBUG" ]; then
WSREP_LOG_DEBUG=$(parse_cnf sst wsrep-debug "")
fi
if [ -z "$WSREP_LOG_DEBUG" ]; then
WSREP_LOG_DEBUG=$(parse_cnf mysqld wsrep_debug "")
fi
if [ -z "$WSREP_LOG_DEBUG" ]; then
WSREP_LOG_DEBUG=$(parse_cnf mysqld wsrep-debug "")
fi
WSREP_LOG_DEBUG=$(normalize_boolean "$WSREP_LOG_DEBUG" "off")
if [[ "$WSREP_LOG_DEBUG" == "off" ]]; then
WSREP_LOG_DEBUG=""
fi
# Determine the timezone to use for error logging
LOGGING_TZ=$(parse_cnf mysqld log-timestamps "")
if [ -z "$LOGGING_TZ" ]; then
LOGGING_TZ=$(parse_cnf mysqld log_timestamps "")
fi
if [ -z "$LOGGING_TZ" ]; then
LOGGING_TZ="UTC"
fi
# Set the options to the 'date' command based on the timezone
if [[ "$LOGGING_TZ" == "SYSTEM" ]]; then
LOG_DATE_COMMAND="+%Y-%m-%dT%H:%M:%S.%6N%:z"
else
LOG_DATE_COMMAND="-u +%Y-%m-%dT%H:%M:%S.%6NZ"
fi
wsrep_log()
{
# echo everything to stderr so that it gets into common error log
# deliberately made to look different from the rest of the log
local readonly tst="$(date $LOG_DATE_COMMAND)"
echo -e "\t$tst WSREP_SST: $*" >&2
}
wsrep_log_error()
{
wsrep_log "[ERROR] $*"
}
wsrep_log_warning()
{
wsrep_log "[WARNING] $*"
}
wsrep_log_info()
{
wsrep_log "[INFO] $*"
}
wsrep_log_debug()
{
if [[ -n "$WSREP_LOG_DEBUG" ]]; then
wsrep_log "[DEBUG] $*"
fi
}
wsrep_cleanup_progress_file()
{
[ -n "${SST_PROGRESS_FILE:-}" ] && rm -f "$SST_PROGRESS_FILE" 2>/dev/null || true
}
wsrep_check_program()
{
local prog=$1
if ! which $prog >/dev/null
then
echo "'$prog' not found in PATH"
return 2 # no such file or directory
fi
}
wsrep_check_programs()
{
local ret=0
while [ $# -gt 0 ]
do
wsrep_check_program $1 || ret=$?
shift
done
return $ret
}
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