#!/bin/bash
##
-# Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
+# Copyright 2015 Telefonica Investigacion y Desarrollo, S.A.U.
# This file is part of openvim
# All Rights Reserved.
#
#
#Upgrade/Downgrade openvim database preserving the content
#
+DBUTILS="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DBUSER="vim"
DBPASS=""
DBPORT="3306"
DBNAME="vim_db"
QUIET_MODE=""
+BACKUP_DIR=""
+BACKUP_FILE=""
#TODO update it with the last database version
LAST_DB_VERSION=23
echo -e " -P PORT database port. '$DBPORT' by default"
echo -e " -h HOST database host. 'localhost' by default"
echo -e " -d NAME database name. '$DBNAME' by default. Prompts if DB access fails"
+ echo -e " -b DIR backup folder where to create rollback backup file"
echo -e " -q --quiet: Do not prompt for credentials and exit if cannot access to database"
echo -e " --help shows this help"
}
-while getopts ":u:p:P:h:d:q-:" o; do
+while getopts ":u:p:b:P:h:d:q-:" o; do
case "${o}" in
u)
DBUSER="$OPTARG"
h)
DBHOST="$OPTARG"
;;
+ b)
+ BACKUP_DIR="$OPTARG"
+ ;;
q)
export QUIET_MODE=yes
;;
DBCMD="mysql $DEF_EXTRA_FILE_PARAM $DBNAME"
#echo DBCMD $DBCMD
-#GET DATABASE VERSION
# check that the database seems a openvim database
if ! echo -e "show create table instances;\nshow create table numas" | $DBCMD >/dev/null 2>&1
then
exit 1;
fi
-if ! echo 'show create table schema_version;' | $DBCMD >/dev/null 2>&1
-then
- DATABASE_VER="0.0"
- DATABASE_VER_NUM=0
-else
- DATABASE_VER_NUM=`echo "select max(version_int) from schema_version;" | $DBCMD | tail -n+2`
- DATABASE_VER=`echo "select version from schema_version where version_int='$DATABASE_VER_NUM';" | $DBCMD | tail -n+2`
- [ "$DATABASE_VER_NUM" -lt 0 -o "$DATABASE_VER_NUM" -gt 100 ] &&
- echo " Error can not get database version ($DATABASE_VER?)" >&2 && exit 1
- #echo "_${DATABASE_VER_NUM}_${DATABASE_VER}"
-fi
-
-[ "$DATABASE_VER_NUM" -gt "$LAST_DB_VERSION" ] &&
- echo "Database has been upgraded with a newer version of this script. Use this version to downgrade" >&2 &&
- exit 1
-
#GET DATABASE TARGET VERSION
#DB_VERSION=0
#[ $OPENVIM_VER_NUM -gt 1091 ] && DATABASE_TARGET_VER_NUM=1 #>0.1.91 => 1
# TODO ... put functions here
-# echo "db version = "${DATABASE_VER_NUM}
-[ $DB_VERSION -eq $DATABASE_VER_NUM ] && echo " current database version '$DATABASE_VER_NUM' is ok" && exit 0
-# Create a backup database content
-TEMPFILE2="$(mktemp -q --tmpdir "backupdb.XXXXXX.sql")"
-trap 'rm -f "$TEMPFILE2"' EXIT
-mysqldump $DEF_EXTRA_FILE_PARAM --add-drop-table --add-drop-database --routines --databases $DBNAME > $TEMPFILE2
+function del_schema_version_process()
+{
+ echo "DELETE FROM schema_version WHERE version_int='0';" | $DBCMD ||
+ ! echo " ERROR writing on schema_version" >&2 || exit 1
+}
+
+function set_schema_version_process()
+{
+ echo "INSERT INTO schema_version (version_int, version, openvim_ver, comments, date) VALUES "\
+ "(0, '0.0', '0.0.0', 'migration from $DATABASE_VER_NUM to $DB_VERSION backup: $BACKUP_FILE',"\
+ "'$(date +%Y-%m-%d)');" | $DBCMD ||
+ ! echo " Cannot set database at migration process writing into schema_version" >&2 || exit 1
+
+}
-function rollback_db()
+function rollback_db()
{
- cat $TEMPFILE2 | mysql $DEF_EXTRA_FILE_PARAM && echo " Aborted! Rollback database OK" ||
- echo " Aborted! Rollback database FAIL"
- exit 1
+ if echo $DATABASE_PROCESS | grep -q init ; then # Empty database. No backup needed
+ echo " Aborted! Rollback database not needed" && exit 1
+ else # migration a non empty database or Recovering a migration process
+ cat $BACKUP_FILE | mysql $DEF_EXTRA_FILE_PARAM && echo " Aborted! Rollback database OK" &&
+ del_schema_version_process && rm -f "$BACKUP_FILE" && exit 1
+ echo " Aborted! Rollback database FAIL" && exit 1
+ fi
}
function sql() # send a sql command
return 0
}
-#UPGRADE DATABASE step by step
-while [ $DB_VERSION -gt $DATABASE_VER_NUM ]
-do
- echo " upgrade database from version '$DATABASE_VER_NUM' to '$((DATABASE_VER_NUM+1))'"
- DATABASE_VER_NUM=$((DATABASE_VER_NUM+1))
- upgrade_to_${DATABASE_VER_NUM}
- #FILE_="${DIRNAME}/upgrade_to_${DATABASE_VER_NUM}.sh"
- #[ ! -x "$FILE_" ] && echo "Error, can not find script '$FILE_' to upgrade" >&2 && exit -1
- #$FILE_ || exit -1 # if fail return
-done
+function migrate()
+{
+ #UPGRADE DATABASE step by step
+ while [ $DB_VERSION -gt $DATABASE_VER_NUM ]
+ do
+ echo " upgrade database from version '$DATABASE_VER_NUM' to '$((DATABASE_VER_NUM+1))'"
+ DATABASE_VER_NUM=$((DATABASE_VER_NUM+1))
+ upgrade_to_${DATABASE_VER_NUM}
+ #FILE_="${DIRNAME}/upgrade_to_${DATABASE_VER_NUM}.sh"
+ #[ ! -x "$FILE_" ] && echo "Error, can not find script '$FILE_' to upgrade" >&2 && exit -1
+ #$FILE_ || exit -1 # if fail return
+ done
-#DOWNGRADE DATABASE step by step
-while [ $DB_VERSION -lt $DATABASE_VER_NUM ]
-do
- echo " downgrade database from version '$DATABASE_VER_NUM' to '$((DATABASE_VER_NUM-1))'"
- #FILE_="${DIRNAME}/downgrade_from_${DATABASE_VER_NUM}.sh"
- #[ ! -x "$FILE_" ] && echo "Error, can not find script '$FILE_' to downgrade" >&2 && exit -1
- #$FILE_ || exit -1 # if fail return
- downgrade_from_${DATABASE_VER_NUM}
- DATABASE_VER_NUM=$((DATABASE_VER_NUM-1))
-done
+ #DOWNGRADE DATABASE step by step
+ while [ $DB_VERSION -lt $DATABASE_VER_NUM ]
+ do
+ echo " downgrade database from version '$DATABASE_VER_NUM' to '$((DATABASE_VER_NUM-1))'"
+ #FILE_="${DIRNAME}/downgrade_from_${DATABASE_VER_NUM}.sh"
+ #[ ! -x "$FILE_" ] && echo "Error, can not find script '$FILE_' to downgrade" >&2 && exit -1
+ #$FILE_ || exit -1 # if fail return
+ downgrade_from_${DATABASE_VER_NUM}
+ DATABASE_VER_NUM=$((DATABASE_VER_NUM-1))
+ done
+}
+
+
+# check if current database is ok
+function check_migration_needed()
+{
+ DATABASE_VER_NUM=`echo "select max(version_int) from schema_version;" | $DBCMD | tail -n+2` ||
+ ! echo " ERROR cannot read from schema_version" || exit 1
+
+ if [[ -z "$DATABASE_VER_NUM" ]] || [[ "$DATABASE_VER_NUM" -lt 0 ]] || [[ "$DATABASE_VER_NUM" -gt 100 ]] ; then
+ echo " Error can not get database version ($DATABASE_VER_NUM?)" >&2
+ exit 1
+ fi
+
+ [[ $DB_VERSION -eq $DATABASE_VER_NUM ]] && echo " current database version '$DATABASE_VER_NUM' is ok" && return 1
+ [[ "$DATABASE_VER_NUM" -gt "$LAST_DB_VERSION" ]] &&
+ echo "Database has been upgraded with a newer version of this script. Use this version to downgrade" >&2 &&
+ exit 1
+ return 0
+}
+
+DATABASE_PROCESS=`echo "select comments from schema_version where version_int=0;" | $DBCMD | tail -n+2` ||
+ ! echo " ERROR cannot read from schema_version" || exit 1
+if [[ -z "$DATABASE_PROCESS" ]] ; then # migration a non empty database
+ check_migration_needed || exit 0
+ # Create a backup database content
+ [[ -n "$BACKUP_DIR" ]] && BACKUP_FILE="$(mktemp -q "${BACKUP_DIR}/backupdb.XXXXXX.sql")"
+ [[ -z "$BACKUP_DIR" ]] && BACKUP_FILE="$(mktemp -q --tmpdir "backupdb.XXXXXX.sql")"
+ mysqldump $DEF_EXTRA_FILE_PARAM --add-drop-table --add-drop-database --routines --databases $DBNAME > $BACKUP_FILE ||
+ ! echo "Cannot create Backup file '$BACKUP_FILE'" >&2 || exit 1
+ echo " Backup file '$BACKUP_FILE' created"
+ # Set schema version
+ set_schema_version_process
+ migrate
+ del_schema_version_process
+ rm -f "$BACKUP_FILE"
+elif echo $DATABASE_PROCESS | grep -q init ; then # Empty database. No backup needed
+ echo " Migrating an empty database"
+ if check_migration_needed ; then
+ migrate
+ fi
+ del_schema_version_process
+
+else # Recover Migration process
+ BACKUP_FILE=${DATABASE_PROCESS##*backup: }
+ [[ -f "$BACKUP_FILE" ]] || ! echo "Previous migration process fail and cannot recover backup file '$BACKUP_FILE'" >&2 ||
+ exit 1
+ echo " Previous migration was killed. Restoring database from rollback file'$BACKUP_FILE'"
+ cat $BACKUP_FILE | mysql $DEF_EXTRA_FILE_PARAM || ! echo " Cannot load backup file '$BACKUP_FILE'" >&2 || exit 1
+ if check_migration_needed ; then
+ set_schema_version_process
+ migrate
+ fi
+ del_schema_version_process
+ rm -f "$BACKUP_FILE"
+fi
+exit 0
#echo done
projects / osm / openvim.git / blobdiff