cookiecutter-django/{{cookiecutter.project_slug}}/compose/postgres/restore.sh

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2016-03-08 12:41:58 +03:00
#!/bin/bash
# stop on errors
set -e
# we might run into trouble when using the default `postgres` user, e.g. when dropping the postgres
# database in restore.sh. Check that something else is used here
if [ "$POSTGRES_USER" == "postgres" ]
then
echo "restoring as the postgres user is not supported, make sure to set the POSTGRES_USER environment variable"
exit 1
fi
# export the postgres password so that subsequent commands don't ask for it
export PGPASSWORD=$POSTGRES_PASSWORD
# check that we have an argument for a filename candidate
if [[ $# -eq 0 ]] ; then
echo 'usage:'
echo ' docker-compose run postgres restore <backup-file>'
echo ''
echo 'to get a list of available backups, run:'
echo ' docker-compose run postgres list-backups'
exit 1
fi
# set the backupfile variable
BACKUPFILE=/backups/$1
# check that the file exists
if ! [ -f $BACKUPFILE ]; then
echo "backup file not found"
echo 'to get a list of available backups, run:'
echo ' docker-compose run postgres list-backups'
exit 1
fi
echo "beginning restore from $1"
echo "-------------------------"
# delete the db
# deleting the db can fail. Spit out a comment if this happens but continue since the db
# is created in the next step
echo "deleting old database $POSTGRES_USER"
if dropdb -h postgres -U $POSTGRES_USER $POSTGRES_USER
then echo "deleted $POSTGRES_USER database"
else echo "database $POSTGRES_USER does not exist, continue"
fi
# create a new database
echo "creating new database $POSTGRES_USER"
createdb -h postgres -U $POSTGRES_USER $POSTGRES_USER -O $POSTGRES_USER
# restore the database
echo "restoring database $POSTGRES_USER"
gunzip -c $BACKUPFILE | psql -h postgres -U $POSTGRES_USER