From a78cb349def3ae27e508b591d05b952006de4b12 Mon Sep 17 00:00:00 2001
Message-Id: <a78cb349def3ae27e508b591d05b952006de4b12.1713954287.git.mdw@distorted.org.uk>
From: Mark Wooding <mdw@chiark.greenend.org.uk>
Date: Sat, 13 Jul 2013 16:34:40 +0100
Subject: [PATCH] debian/tripe-peer-services.postinst: Retire the old `watch'
 service.
Organization: Straylight/Edgeware

From: Mark Wooding <mdw@distorted.org.uk>

Stop the service, if necessary, and clear away its symbolic link.
---
 debian/tripe-peer-services.postinst | 40 +++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/debian/tripe-peer-services.postinst b/debian/tripe-peer-services.postinst
index db937deb..1a4754c5 100644
--- a/debian/tripe-peer-services.postinst
+++ b/debian/tripe-peer-services.postinst
@@ -95,6 +95,46 @@ restart_services () {
   echo "."
 }
 
+retire_service () {
+  name=$1 version=$2
+
+  ## If the service is currently running, then ask it to stop.
+  if tripectl >/dev/null 2>&1 svcensure $name && \
+     ! tripectl >/dev/null 2>&1 svcensure $name $version~
+  then
+    tripectl svcsubmit $name quit
+  fi
+
+  ## Remove the symbolic link if it's there.
+  if [ -L /etc/tripe/services/$name ]; then
+    case $(readlink /etc/tripe/services/$name) in
+      /usr/lib/tripe/services/$name)
+	rm /etc/tripe/services/$name
+	;;
+    esac
+  fi
+}
+
+case "$1" in
+  configure)
+    v=$2
+
+    ## Apply upgrades iteratively until we catch up with reality.
+    while :; do
+
+      ## Here, we killed the `watch' service.
+      if dpkg --compare-versions "$v" lt-nl 1.0.0pre14~; then
+	retire_service watch 1.0.0pre14
+	v=1.0.0pre14
+
+      ## No more updates to apply.
+      else
+	break
+      fi
+    done
+    ;;
+esac
+
 restart_services conntrack connect
 
 #DEBHELPER#
-- 
[mdw]