use dbconfig-common for database

debian/config

@@ -42,3 +42,16 @@ fi
 # Do you want to change gitlab user?
 db_input high gitlab/user || true
 db_go
+db_get gitlab/user
+gitlab_user=$RET
+
+# source dbconfig-common shell library, and call the hook function
+if [ -f /usr/share/dbconfig-common/dpkg/config ]; then
+   . /usr/share/dbconfig-common/dpkg/config
+
+   dbc_dbtypes="pgsql"
+   dbc_dbname="gitlab_production"
+   dbc_dbuser="$gitlab_user"
+
+   dbc_go $gitlab_user "$@"
+fi

debian/control

@@ -22,6 +22,7 @@ Depends: ${shlibs:Depends}, ${misc:Depends}, ruby | ruby-interpreter,
  rake,
  bundler,
  postgresql-client,
+ dbconfig-pgsql | dbconfig-no-thanks,
  adduser (>= 3.34~),
  bc,
  postgresql-contrib,

debian/grantpriv.sh

@@ -1,25 +0,0 @@
-#!/bin/sh
-set -e
-
-dbname=gitlab_production
-
-# Take gitlab_user from envornment variable or use gitlab
-gitlab_user=${gitlab_user:-gitlab}
-
-# If gitlab user cannot access gitlab_production,
-# then it means the gitlab role does not exist
-if ! su ${gitlab_user} -c 'psql gitlab_production -c ""'
-then
-	echo "Create ${gitlab_user} user with create database privillege..."
-	su postgres -c "psql -c \"CREATE USER ${gitlab_user} CREATEDB;\""
-fi
-
-# By default the gitlab_prodcution is not owned by gitlab user
-echo "Make ${gitlab_user} user owner of $dbname database..."
-su postgres -c "psql -c \"ALTER DATABASE $dbname OWNER to ${gitlab_user};\""
-
-echo "Grant all privileges to ${gitlab_user} user..."
-su postgres -c "psql -c \"GRANT ALL PRIVILEGES ON DATABASE template1 to ${gitlab_user};\""
-
-# enable the pg_trgm extension
-su postgres -c "psql -d $dbname -c \"CREATE EXTENSION IF NOT EXISTS pg_trgm;\""

debian/install

@@ -11,7 +11,6 @@ debian/conf/tmpfiles.d/gitlab.conf.example usr/lib/gitlab/templates/tmpfiles.d
 debian/conf/nginx.conf.example usr/lib/gitlab/templates
 debian/conf/nginx.ssl.conf.example usr/lib/gitlab/templates
 debian/adduser.sh usr/lib/gitlab/scripts
-debian/grantpriv.sh usr/lib/gitlab/scripts
 debian/rake-tasks.sh usr/lib/gitlab/scripts
 debian/gitlab-check.sh usr/lib/gitlab/scripts
 app usr/share/gitlab

debian/postinst

@@ -20,6 +20,7 @@ gitlab_debian_defaults_copy=/var/lib/gitlab/gitlab-debian.defaults
 
 # Show debconf questions
 . /usr/share/debconf/confmodule
+. /usr/share/dbconfig-common/dpkg/postinst
 
 # summary of how this script can be called:
 #        * <postinst> `configure' <most-recently-configured-version>
@@ -310,15 +311,11 @@ case "$1" in
         echo "Reloading nginx configuration..."
         invoke-rc.d nginx reload
       fi
+    dbc_go gitlab "$@"
     db_stop
 
-    echo "Create database if not present"
-    if ! su postgres -s /bin/sh -c "psql  gitlab_production -c ''"; then
-      su postgres -c 'createdb -E unicode -T template0 gitlab_production'
-    fi
-
-    # Adjust database privileges
-    . /usr/lib/gitlab/scripts/grantpriv.sh
+    # enable the pg_trgm extension
+    su postgres -c "psql -d gitlab_production -c \"CREATE EXTENSION IF NOT EXISTS pg_trgm;\""
 
     # Remove Gemfile.lock if present
     rm -f ${gitlab_data_dir}/Gemfile.lock