Update script

update.sh

@@ -0,0 +1,164 @@
+##!/bin/bash
+set -euo pipefail
+
+### constants ###
+FILE="Part-DB-release-stage"
+GITREPO="/opt/partdb/git-repo"
+PRODENV="/var/www/Part-DB-server"
+BACKUPDIR="/HDD5/backups/partdb"
+WEB_AVAILABLE="/etc/apache2/sites-available"
+WEB_ENABLED="/etc/apache2/sites-enabled"
+WEBSERVICE="apache2"
+LIVE_CONF="01_partdb.conf"
+TEST_CONF="06_partdb_testing.conf"
+MNT_CONF="07_partdb_maintenance.conf"
+
+# We should probably do a sanity check here?
+DBUSER="$1"
+DBPASSWD="$2"
+
+### variables ###
+stage="1"
+
+echo ""
+echo "*** Part-DB upgrade tool v0.0001 (WorksForMe* edition) ***"
+
+
+if [ $(whoami) != 'root' ]; then
+        echo ""
+        echo "This script must be run as root!"
+        exit -1
+fi
+
+if [ -f $FILE ]; then
+        stage=$(<$FILE)
+fi
+
+if [ "$stage" = "1" ]; then # no update currently in progress
+        cd $GITREPO
+        git fetch --tags
+        # get latest version
+        gitver=$(git describe --tags --abbrev=0)
+        currentver=$(</var/www/Part-DB-server/VERSION)
+        if [ "$gitver" = "v$currentver" ]; then
+                echo "* Already up-to-date!"
+                exit 0
+        fi
+        echo "New version $gitver avaliable (currently on $currentver)."
+fi
+
+for curstage in $(seq $(($stage)) 4)
+do
+    echo ""
+    echo "* Stage $curstage: continue? (y/n)"
+    read -r response
+    echo ""
+    if [ "$response" = "y" ]; then
+        case $curstage in
+        "1")
+        if [ "$stage" = "1" ]; then
+                echo "* Stage 1: Put Part-DB in maintenance mode"
+                # remove link to current PartDB VHost
+                rm -f $WEB_ENABLED/$LIVE_CONF
+                # put up a maintenance notice on the URL
+                ln -sf $WEB_AVAILABLE/$MNT_CONF $WEB_ENABLED/$LIVE_CONF
+                # put up extra url for testing new part-db (not necessary, may always exist)
+#               ln -sf $WEB_AVAILABLE/partdb_testing.conf $WEB_ENABLED/partdb_testing.conf
+                # reload apache
+                if ! [ `systemctl reload $WEBSERVICE && systemctl is-active --quiet $WEBSERVICE` ]; then
+                        echo "* Webserver restart failed! Please check your $WEBSERVICE site configurations."
+                        break
+                fi
+                echo "* Part-DB now in maintenance mode, update may proceed."
+                echo "2" > $FILE
+        else
+                echo "* Invalid stage: $stage, expected 1"
+                exit 1
+        fi
+        ;;
+        "2")
+        if [ "$stage" = "2" ]; then
+                echo "* Stage 2: Dump DB and update Part-DB via git"
+                # cd into working dir
+                cd $GITREPO
+                git fetch --tags
+                # get latest version
+                version=$(git describe --tags --abbrev=0)
+                # dump DB, preventing overwrite by re-execution if e.g. the migration broke the database structure
+                mysqldump -u$DBUSER -p$DBPASSWD partdb > $BACKUPDIR/partdb_before_update_$version_$(date -Iseconds).sql
+                # pull changes, checkout latest tag
+                git pull && git checkout $version
+                # copy config and media files and correct ownership
+                cp "$PRODENV/.env.local" $GITREPO
+                cp -rn $PRODENV/public/media/ $GITREPO/public/
+                chown -R www-data:www-data $GITREPO
+                # merge .env with .env.local, config/services.yaml, config/parameters.yaml if changed
+                # TODO how to handle customizations ??? meld ???
+                echo "* Files are in place, build step pending"
+                echo "3" > $FILE
+        else
+                echo "* Invalid stage: $stage, expected 2"
+                exit 2
+        fi
+        ;;
+        "3")
+        if [ "$stage" = "3" ] ; then
+                echo "* Stage 3: Build process"
+                # build steps
+                cd $GITREPO
+                environment=$(sed -nr 's/APP_ENV=(.*)/\1/p' .env.local)
+                if [ environment != "dev" ]; then
+                        environment="no-dev"
+                fi
+                sudo -u www-data composer install --$environment -o
+                yarn install
+                yarn build
+                # check if installation succeeded and migrate db
+                sudo -u www-data php bin/console partdb:check-requirements
+                sudo -u www-data php bin/console doctrine:migrations:migrate
+                sudo -u www-data php bin/console cache:clear
+                # we can mess with the production db because we have a very recent backup
+                rsync -av --exclude=$GITREPO/.git* $GITREPO/ $PRODENV-test
+
+                echo "* The new Part-DB version can now be tested. You may need to merge .env.local with .env and check yaml files in config/."
+                echo "4" > $FILE
+        else
+                echo "* Invalid stage: $stage, expected 3"
+                exit 3
+        fi
+        ;;
+        "4")
+        if [ "$stage" = "4" ]; then
+                echo "Stage 4: Put Part-DB back in production mode, retaining the old copy"
+                # copy all to prod environment
+                mv $PRODENV $PRODENV-old
+                mv $PRODENV-test $PRODENV
+                # remove link to maintenance PartDB VHost
+                rm $WEB_ENABLED/$LIVE_CONF $WEB_ENABLED/$TEST_CONF
+                # link the new partdb version
+                ln -sf $WEB_AVAILABLE/$LIVE_CONF $WEB_ENABLED/$LIVE_CONF
+                # reload apache
+                if ! [ `systemctl reload $WEBSERVICE && systemctl is-active --quiet $WEBSERVICE` ]; then
+                        echo "* Webserver restart failed! Please check your $WEBSERVICE site configurations."
+                        break
+                fi
+                echo ""
+                echo "*** Done. ***"
+                rm $FILE
+        else
+                echo "* Invalid stage: $stage, expected 4"
+                exit 4
+        fi
+        ;;
+        esac
+        if [ -f $FILE ]; then
+            stage=$(<$FILE)
+        else
+            stage="1"
+        fi
+    else
+        echo "Update process aborted before stage $curstage."
+        break
+    fi
+done
+exit 0