Add some debconf questions so that an upgrade stands a chance of not

breaking. Note that although the documentation suggests this should go
in a separate "config" file if we do that then it tries to bring up the
server first THEN configure the package...

3 files changed, 42 insertions, 1 deletions

diff --git a/packaging/debs/Debian/debian/control b/packaging/debs/Debian/debian/control
index 749791a4bd..a0d858be6c 100644
--- a/packaging/debs/Debian/debian/control
+++ b/packaging/debs/Debian/debian/control
@@ -7,7 +7,7 @@ Standards-Version: 3.7.2
 
 Package: rabbitmq-server
 Architecture: all
-Depends: erlang-nox, adduser, logrotate
+Depends: erlang-nox, adduser, logrotate, debconf
 Description: An AMQP server written in Erlang
  RabbitMQ is an implementation of AMQP, the emerging standard for high
  performance enterprise messaging. The RabbitMQ server is a robust and
diff --git a/packaging/debs/Debian/debian/postinst b/packaging/debs/Debian/debian/postinst
index f92131d0c8..94b6e727ac 100644
--- a/packaging/debs/Debian/debian/postinst
+++ b/packaging/debs/Debian/debian/postinst
@@ -34,6 +34,28 @@ chown -R rabbitmq:rabbitmq /var/log/rabbitmq
 
 case "$1" in
     configure)
+        . /usr/share/debconf/confmodule
+
+        if su rabbitmq -s /bin/sh -c /usr/lib/rabbitmq/bin/rabbitmq-mnesia-update-needed ; then
+            db_beginblock
+            db_input high rabbitmq-server/mnesia-dir-note || true
+            db_input high rabbitmq-server/do-what-with-mnesia-dir || true
+            db_endblock
+            db_go
+
+            db_get rabbitmq-server/do-what-with-mnesia-dir
+            if [ "$RET" = "Delete it" ]; then
+                rm -r /var/lib/rabbitmq/mnesia/
+            elif [ "$RET" = "Move it elsewhere" ]; then
+                db_input high rabbitmq-server/move-mnesia-dir-where || true
+                db_go
+
+                db_get rabbitmq-server/move-mnesia-dir-where
+
+                mkdir -p "`dirname $RET`"
+                mv /var/lib/rabbitmq/mnesia "$RET"
+            fi
+        fi
     ;;
 
     abort-upgrade|abort-remove|abort-deconfigure)
diff --git a/packaging/debs/Debian/debian/templates b/packaging/debs/Debian/debian/templates
new file mode 100644
index 0000000000..3f87a0b41b
--- /dev/null
+++ b/packaging/debs/Debian/debian/templates
@@ -0,0 +1,19 @@
+Template: rabbitmq-server/mnesia-dir-note
+Type: note
+Description: Mnesia schema changed
+ The Mnesia schema has changed. Under most circumstances it is safe to remove
+ the Mnesia directory and start again. However, if you ... or ... you would
+ need to ...
+
+Template: rabbitmq-server/do-what-with-mnesia-dir
+Type: select
+Choices: Delete it, Move it elsewhere, Keep it in place (WILL BREAK)
+Default: Delete it
+Description: Delete the Mnesia directory?
+
+Template: rabbitmq-server/move-mnesia-dir-where
+Type: string
+Default: /var/lib/rabbitmq/mnesia-old/
+Description: New location for Mnesia directory?
+ Where do you want to move it?
+