From bb2868a583e11633a9b83cd6ad0df378f3d1d032 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Aur=C3=A9lien=20Delobelle?=
 <aurelien.delobelle@backmarket.com>
Date: Sun, 17 Jun 2018 18:38:51 +0200
Subject: [PATCH] Add script for migrations

---
 provisioning/move_apps.sh         | 60 +++++++++++++++++++++++++++++++
 provisioning/move_apps_helpers.sh | 37 +++++++++++++++++++
 provisioning/test_move_apps.sh    | 57 +++++++++++++++++++++++++++++
 3 files changed, 154 insertions(+)
 create mode 100755 provisioning/move_apps.sh
 create mode 100644 provisioning/move_apps_helpers.sh
 create mode 100644 provisioning/test_move_apps.sh

diff --git a/provisioning/move_apps.sh b/provisioning/move_apps.sh
new file mode 100755
index 00000000..cbe858a1
--- /dev/null
+++ b/provisioning/move_apps.sh
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+cp cof/settings/secret.py gestioCOF/settings/secret.py
+
+# Exit on error
+set -e
+
+. provisioning/move_apps_helpers.sh
+
+echo "-----"
+
+echo "»»» Stopping services…"
+systemctl stop daphne
+systemctl stop worker
+
+echo "»»» Updating database…"
+_psql <<SQL
+BEGIN;
+\echo Updating 'migrations' table…
+UPDATE django_migrations SET app='cof' WHERE app='gestioncof';
+
+\echo Updating 'content_type' table…
+UPDATE django_content_type SET app_label='cof' WHERE app_label='gestioncof';
+
+\echo Renaming gestioncof tables…
+DO
+\$\$
+DECLARE
+    r record;
+BEGIN
+    FOR r IN
+        SELECT tablename FROM pg_tables
+        WHERE schemaname='public' AND tablename LIKE 'gestioncof_%'
+    LOOP
+        EXECUTE '
+            ALTER TABLE ' || quote_ident(r.tablename) || '
+            RENAME TO ' || quote_ident(replace(r.tablename, 'gestioncof', 'cof'))
+        ;
+    END LOOP;
+END
+\$\$;
+COMMIT;
+SQL
+
+echo "»»» Symlink secrets…"
+
+echo "»»» Updating services…"
+sed -i.bak -e 's/cof.settings/gestioCOF.settings/g; s/cof.asgi/gestioCOF.asgi/g' ${SERVICE_DAPHNE}
+sed -i.bak -e 's/cof.settings/gestioCOF.settings/g' ${SERVICE_WORKER}
+
+echo "»»» Restarting services…"
+systemctl daemon-reload
+systemctl start worker
+systemctl start daphne
+
+echo "-----"
+
+echo "Looks Good To Me!!"
+
+echo "If ok, you can delete '${SERVICE_DAPHNE}.bak' and '${SERVICE_WORKER}.bak'."
diff --git a/provisioning/move_apps_helpers.sh b/provisioning/move_apps_helpers.sh
new file mode 100644
index 00000000..1b2b7345
--- /dev/null
+++ b/provisioning/move_apps_helpers.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+
+_django_settings() {
+    # Returns the value of a Django settings.
+    echo $(python3 -c "
+import ${DJANGO_SETTINGS_MODULE} as settings
+print(settings.${1})")
+}
+
+
+DJANGO_SETTINGS_MODULE=${DJANGO_SETTINGS_MODULE:-gestioCOF.settings.dev}
+# Tests that module exists
+python3 -c "import ${DJANGO_SETTINGS_MODULE}"
+
+echo "Django settings module: ${DJANGO_SETTINGS_MODULE}"
+
+DBHOST=$(_django_settings DATABASES[\'default\'][\'HOST\'])
+DBNAME=$(_django_settings DATABASES[\'default\'][\'NAME\'])
+DBUSER=$(_django_settings DATABASES[\'default\'][\'USER\'])
+DBPASSWORD=$(_django_settings DATABASES[\'default\'][\'PASSWORD\'])
+
+_psql() {
+    PGPASSWORD=${DBPASSWORD} psql -h ${DBHOST} -d ${DBNAME} -U ${DBUSER} "$@"
+}
+
+echo "Database: ${DBNAME}"
+
+SERVICE_DIR=${SERVICES_DIR:-/etc/systemd/system}
+SERVICE_DAPHNE=${SERVICE_DIR}/${SERVICE_DAPHNE_FILENAME}
+SERVICE_WORKER=${SERVICE_DIR}/${SERVICE_WORKER_FILENAME}
+
+[ -e ${SERVICE_DAPHNE} ] || exit 1
+[ -e ${SERVICE_WORKER} ] || exit 1
+
+echo "Services:"
+echo "  - Daphne: ${SERVICE_DAPHNE}"
+echo "  - Worker: ${SERVICE_WORKER}"
diff --git a/provisioning/test_move_apps.sh b/provisioning/test_move_apps.sh
new file mode 100644
index 00000000..29825102
--- /dev/null
+++ b/provisioning/test_move_apps.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+
+BRANCH_PRODUCTION="Production"
+BRANCH_WIP="aureplop/restructuring"
+
+export SERVICE_DAPHNE_FILENAME="daphne.service"
+export SERVICE_WORKER_FILENAME="worker.service"
+export VENV_DIR="/home/ubuntu"
+
+# Exit on error
+set -e
+
+. provisioning/move_apps_helpers.sh
+
+if [[ "$DJANGO_SETTINGS_MODULE" =~ "prod" ]] ;
+then
+    echo "!!! Hint: Don't test me in production"
+    exit 1
+fi
+
+echo "Notes:"
+echo "  - The Vagrant DB data will be lost."
+
+echo "-----"
+
+echo "»»» Setup state, as of Production"
+
+echo "- Checkout '$BRANCH_PRODUCTION'…"
+git checkout "$BRANCH_PRODUCTION"
+
+echo "- Prepare database…"
+sudo -u postgres dropdb --if-exists $DBNAME
+sudo -u postgres createdb $DBNAME
+sudo -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE $DBNAME TO $DBUSER"
+
+echo "- Prepare Django…"
+ln -s secret_example.py cof/settings/secret.py
+. ${VENV_DIR}/venv/bin/activate
+export DJANGO_SETTINGS_MODULE="cof.settings.dev"
+bash provisioning/prepare_django.sh
+
+echo "- Checkout '$BRANCH_WIP'…"
+git checkout "$BRANCH_WIP"
+export DJANGO_SETTINGS_MODULE="gestioCOF.settings.dev"
+
+echo "##### RUNNING move_apps.sh #####"
+
+sh provisioning/move_apps.sh
+
+# For production, use:
+# $ git pull
+# $ export DJANGO_SETTINGS_MODULE="gestioCOF.settings.prod"
+# $ sh provisioning/move_apps.sh
+
+echo "############ ENDED #############"
+
+# Add checks below this line