COMMAND=$(basename $0)
BASENAME=$(basename $COMMAND .sh)
DIRNAME=$(dirname $0)
+# normalize
+DIRNAME=$(cd ${DIRNAME}; /bin/pwd)
-. /etc/planetlab/plc_config
+MIGRATION_SED=$DIRNAME/${BASENAME}.sed
+MIGRATION_SQL=$DIRNAME/${BASENAME}.sql
+# look in ..
+SCHEMA_SQL=$(dirname $DIRNAME)/planetlab5.sql
+
+DATE=$(date +%Y-%m-%d-%H-%M)
+DATE_=$(date +%Y_%m_%d_%H_%M)
+LOG=${DIRNAME}/${DATE}.log
+DUMP=${DIRNAME}/${DATE}-pl4.sql
+RESTORE=${DIRNAME}/${DATE}-pl5.sql
+FAKE=${DIRNAME}/input-pl4.sql
+VIEWS_SQL=$DIRNAME/${DATE}-views5.sql
-PLC_DB_USER
+# load config
+. /etc/planetlab/plc_config
# return 0 (yes) or 1 (no) whether the database exists
function check_for_database () {
dbname=$1; shift
- psql --user=$PLC_DB_USER --quiet -c "SELECT subversion from plc_db_version LIMIT 1" $dbname 2> /dev/null
+ psql --user=$PLC_DB_USER --quiet -c "SELECT subversion from plc_db_version LIMIT 1" $dbname > /dev/null 2>&1
return $?
}
# when 'service plc start' gets run, the planetlab5 DB gets created
# so this script will drop the planetlab5 DB and re-create it from scratch
# with the contents of the planetlab4 DB that is epxected to exist
-function main () {
-
+function warning () {
+ echo "$COMMAND"
+ echo "This script is designed to ease the migration from myplc 4.2 to 5.0"
+ echo "You can run it before of after you install a 5.0 myplc"
+ echo "It will attempt to re-create the planetlab5 database from planetlab4"
+ echo "The planetlab5 database is renamed, not dropped, if it is found on the system"
+ echo -n "Are you sure you want to proceed y/[n] ? "
+ read answer
+ case $answer in
+ y|Y) echo See log in $LOG ;;
+ *) echo "Bye" ; exit 1 ;;
+ esac
+}
+
+function check () {
+ [ -f $MIGRATION_SED ] || { echo $MIGRATION_SED not found - exiting ; exit 1; }
+ [ -f $MIGRATION_SQL ] || { echo $MIGRATION_SQL not found - exiting ; exit 1; }
+ [ -f $SCHEMA_SQL ] || { echo $SCHEMA_SQL not found - exiting ; exit 1; }
+}
+
+function run () {
+ message=$1; shift
+
+ if [ -n "$DEBUG" ] ; then
+ echo -n "Type enter to run next step XXX $message XXX ... "
+ read _answer_
+ fi
+
+ echo -n "$message "
+ echo "==================================================" >> $LOG
+ echo $message >> $LOG
+ echo "$@" >> $LOG
+ "$@" >> $LOG 2>&1
+ echo Done
+}
+
+function migrate () {
set -e
- cd /usr/share/plc_api
+ cd $DIRNAME
# check that planetlab4 exists
if check_for_database planetlab4 ; then
- echo OK : FOUND db planetlab4
+ echo "OK : FOUND db planetlab4"
else
- echo ERROR : planetlab4 NOT FOUND - exiting
+ echo "ERROR : planetlab4 NOT FOUND - bye"
exit 1
fi
- # dump planetlab4
- DUMP4=planetlab4-$(date +%Y-%m-%d-%H-%M)
- pg_dump --user=$PLC_DB_USER planetlab4 > $DUMP4.sql
-
# check if planetlab5 exists
if check_for_database planetlab5 ; then
- echo 'WARNING: found an existing DB named planetlab5'
- i=0
- while true; do
- i=$(($i+1))
- bkname=$(printf planetlab5-%03d $i)
- if check_for_database $bkname ; then
- echo "$bkname already exists - skipping"
- else
- echo "Renaming planetab5 into $bkname"
- psql --user=$PLC_DB_USER -c "ALTER DATABASE planetlab5 RENAME TO $bkname"
- echo "Done"
- fi
- done
+ rename=planetlab5_${DATE_}
+ echo -n "There is an existing DB named planetlab5, drop or rename into $rename d/[r] ? "
+ read _answer_
+ case $_answer_ in
+ d|D)
+ run "Dropping planetlab5" psql --user=postgres template1 -c "DROP DATABASE planetlab5" || true
+ ;;
+ *)
+ if check_for_database $rename ; then
+ echo "$rename already exists - exiting"
+ exit 1
+ else
+ run "Renaming planetlab5 into $rename" \
+ psql --user=postgres template1 -c "ALTER DATABASE planetlab5 RENAME TO $rename"
+ fi
+ ;;
+ esac
fi
+
+ # again: now it should not exist
if check_for_database planetlab5 ; then
- echo ERROR : FOUND planetlab5 - exiting
+ echo "ERROR : FOUND planetlab5 - should not happen - exiting"
exit 1
else
- echo OK : db planetlab5 NOT FOUND
+ echo "OK, we're clear, let's go"
fi
- # create it
- createdb --user=postgres --encoding=UNICODE --owner=$PLC_DB_USER planetlab5
- # populate it
- psql --user=$PLC_DB_USER planetlab5 < $DUMP4.sql
-
- # run coarse-grain script
- migration_script | psql --user=$PLC_DB_USER planetlab5
+ # dump planetlab4
+ if [ ! -f $FAKE ] ; then
+ run "Dumping planetlab4 in $DUMP" pg_dump --user=$PLC_DB_USER -f $DUMP planetlab4
+ else
+ echo ''
+ echo 'xxxx WARNING WARNING WARNING WARNING WARNING xxx'
+ echo ''
+ echo Using fake input for tests $FAKE
+ echo ''
+ echo 'xxxx WARNING WARNING WARNING WARNING WARNING xxx'
+ echo ''
+ DUMP=$FAKE
+ fi
+
+ run "Copying into $RESTORE" cp $DUMP $RESTORE
+ run "Renaming identifiers in $RESTORE" sed -f $MIGRATION_SED -i $RESTORE
+
+ run "Creating planetlab5 database" createdb --user=postgres --encoding=UNICODE --owner=$PLC_DB_USER planetlab5
+ run "Loading language plpgsql" createlang -U postgres plpgsql planetlab5 || true
+ run "Populating planetlab5 from $RESTORE" psql --user=postgres -f $RESTORE planetlab5
+ run "Fine-tuning it with $MIGRATION_SQL" psql --user=$PLC_DB_USER -f $MIGRATION_SQL planetlab5
+ run "Extracting views definitions from $SCHEMA_SQL" ./extract-views.py $SCHEMA_SQL $VIEWS_SQL
+ run "Inserting views definitions in planetlab5" \
+ psql --user=$PLC_DB_USER -f $VIEWS_SQL planetlab5
}
+function manage_link () {
+ dest=$1; shift
+ src=$1; shift
+ cd $DIRNAME
+ echo "Managing link $dest"
+ rm -f $dest
+ ln -s $src $dest
+}
-function migration_script () {
+function links () {
+ # tmp
+ result=${DIRNAME}/${DATE}-output.sql
+ run "Dumping result in $result" pg_dump --user=$PLC_DB_USER -f $result planetlab5
+
+ manage_link latest.log $LOG
+ manage_link latest-pl4.sql $DUMP
+ manage_link latest-pl5.sql $RESTORE
+ manage_link latest-views5.sql $VIEWS_SQL
+ manage_link latest-output.sql $result
+
+}
+
+function main () {
+
+ check
+ warning
+ set -e
+ migrate
+ links
- sql_script=$DIRNAME/${BASENAME}.sql
- if [ -f $sql_script ] ; then
- cat $sql_script
- else
- echo Cannot locate ${BASENAME}.sql
- echo exiting
- exit 1
- fi
}
+
+main "$@"
git://git.onelab.eu / plcapi.git / blobdiff