#!/bin/bash
+set -e
+
+if [ -e /etc/redhat-release ]; then
+ WWW_OWNER=apache:apache
+else
+ # Assume we're on a Debian-based system for now.
+ WWW_OWNER=www-data:www-data
+fi
+
+NGINX_SERVICE=${NGINX_SERVICE:-$(service --status-all 2>/dev/null \
+ | grep -Eo '\bnginx[^[:space:]]*' || true)}
+if [ -z "$NGINX_SERVICE" ]; then
+ cat >&2 <<EOF
+Error: nginx service not found. Aborting.
+Set NGINX_SERVICE to the name of the service hosting the Rails server.
+EOF
+ exit 1
+elif [ "$NGINX_SERVICE" != "$(echo "$NGINX_SERVICE" | head -n 1)" ]; then
+ cat >&2 <<EOF
+Error: multiple nginx services found. Aborting.
+Set NGINX_SERVICE to the name of the service hosting the Rails server.
+EOF
+ exit 1
+fi
+
RELEASE_PATH=/var/www/arvados-api/current
SHARED_PATH=/var/www/arvados-api/shared
CONFIG_PATH=/etc/arvados/api/
-echo "Assumption: nginx is configured to serve `hostname` from /var/www/`hostname`/current"
-echo "Assumption: /var/www/`hostname` is symlinked to /var/www/arvados-api"
+echo "Assumption: $NGINX_SERVICE is configured to serve $HOSTNAME from /var/www/$HOSTNAME/current"
+echo "Assumption: /var/www/$HOSTNAME is symlinked to /var/www/arvados-api"
echo "Assumption: configuration files are in /etc/arvados/api/"
-echo "Assumption: nginx and passenger run as the www-data user"
+echo "Assumption: $NGINX_SERVICE and passenger run as $WWW_OWNER"
echo
echo "Copying files from $CONFIG_PATH"
if [[ ! -e $RELEASE_PATH/log ]]; then ln -s $SHARED_PATH/log $RELEASE_PATH/log; fi
if [[ ! -e $SHARED_PATH/log/production.log ]]; then touch $SHARED_PATH/log/production.log; fi
+cd "$RELEASE_PATH"
+export RAILS_ENV=production
+
echo "Running bundle install"
-(cd $RELEASE_PATH && RAILS_ENV=production bundle install --path $SHARED_PATH/vendor_bundle)
+bundle install --path $SHARED_PATH/vendor_bundle
echo "Done."
echo "Precompiling assets"
# precompile assets; thankfully this does not take long
-(cd $RELEASE_PATH; RAILS_ENV=production bundle exec rake assets:precompile)
+bundle exec rake assets:precompile
echo "Done."
echo "Ensuring directory and file permissions"
# Ensure correct ownership of a few files
-chown www-data:www-data $RELEASE_PATH/config/environment.rb
-chown www-data:www-data $RELEASE_PATH/config.ru
-chown www-data:www-data $RELEASE_PATH/config/database.yml
-chown www-data:www-data $RELEASE_PATH/Gemfile.lock
-chown -R www-data:www-data $RELEASE_PATH/tmp
-chown -R www-data:www-data $SHARED_PATH/log
-chown www-data:www-data $RELEASE_PATH/db/structure.sql
+chown "$WWW_OWNER" $RELEASE_PATH/config/environment.rb
+chown "$WWW_OWNER" $RELEASE_PATH/config.ru
+chown "$WWW_OWNER" $RELEASE_PATH/config/database.yml
+chown "$WWW_OWNER" $RELEASE_PATH/Gemfile.lock
+chown -R "$WWW_OWNER" $RELEASE_PATH/tmp
+chown -R "$WWW_OWNER" $SHARED_PATH/log
+chown "$WWW_OWNER" $RELEASE_PATH/db/structure.sql
chmod 644 $SHARED_PATH/log/*
echo "Done."
echo "Running sanity check"
-(cd $RELEASE_PATH; RAILS_ENV=production bundle exec rake config:check)
-echo "Done."
-
+bundle exec rake config:check
SANITY_CHECK_EXIT_CODE=$?
+echo "Done."
if [[ "$SANITY_CHECK_EXIT_CODE" != "0" ]]; then
echo "Sanity check failed, aborting. Please roll back to the previous version of the package."
exit $SANITY_CHECK_EXIT_CODE
fi
-echo "Starting db:migrate"
-(cd $RELEASE_PATH && bundle exec rake RAILS_ENV=production db:migrate)
+echo "Checking database status"
+# If we use `grep -q`, rake will write a backtrace on EPIPE.
+if bundle exec rake db:migrate:status | grep '^database: ' >/dev/null; then
+ echo "Starting db:migrate"
+ bundle exec rake db:migrate
+elif [ 0 -eq ${PIPESTATUS[0]} ]; then
+ # The database exists, but the migrations table doesn't.
+ echo "Setting up database"
+ bundle exec rake db:structure:load db:seed
+else
+ echo "Error: Database is not ready to set up. Aborting." >&2
+ exit 1
+fi
echo "Done."
echo "Restarting nginx"
-service nginx restart
+service "$NGINX_SERVICE" restart
echo "Done."