From 4ffc6e360cab81fb5c126ca16a2d970e9fae0fc9 Mon Sep 17 00:00:00 2001
From: Imdad Ahad <imdad.ahad@digital.cabinet-office.gov.uk>
Date: Mon, 13 Feb 2017 17:32:51 +0000
Subject: [PATCH 1/2] Remove notify app folder and installed python packages
 before we deploy the app

---
 appspec.yml                   |  4 ++++
 scripts/aws_clear_instance.sh | 14 ++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100755 scripts/aws_clear_instance.sh

diff --git a/appspec.yml b/appspec.yml
index 882459f2e..0a55dcfa1 100644
--- a/appspec.yml
+++ b/appspec.yml
@@ -4,6 +4,10 @@ files:
     destination: /home/notify-app/notifications-admin
     source: /
 hooks:
+  BeforeInstall:
+    - location: scripts/aws_clear_instance.sh
+      runas: root
+      timeout: 1000
   AfterInstall:
     -
       location: scripts/aws_install_dependencies.sh
diff --git a/scripts/aws_clear_instance.sh b/scripts/aws_clear_instance.sh
new file mode 100755
index 000000000..41fd44d98
--- /dev/null
+++ b/scripts/aws_clear_instance.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+echo "Removing application and dependencies"
+
+if [ -d "/home/notify-app/notifications-admin" ]; then
+    # Remove and re-create the directory
+    rm -rf /home/notify-app/notifications-admin
+    mkdir -vp /home/notify-app/notifications-admin
+    # Remove installed py3 packages
+    pip3 freeze | xargs pip3 uninstall -y
+else
+    echo "Directory does not exist, something went wrong!"
+fi
+

From 4110d06e1fb474272d9c880bf72d94da257ee19b Mon Sep 17 00:00:00 2001
From: Imdad Ahad <imdad.ahad@digital.cabinet-office.gov.uk>
Date: Tue, 14 Feb 2017 12:17:03 +0000
Subject: [PATCH 2/2] Cancel uninstalling python packages

---
 scripts/aws_clear_instance.sh | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/scripts/aws_clear_instance.sh b/scripts/aws_clear_instance.sh
index 41fd44d98..1b159ddb3 100755
--- a/scripts/aws_clear_instance.sh
+++ b/scripts/aws_clear_instance.sh
@@ -5,10 +5,6 @@ echo "Removing application and dependencies"
 if [ -d "/home/notify-app/notifications-admin" ]; then
     # Remove and re-create the directory
     rm -rf /home/notify-app/notifications-admin
-    mkdir -vp /home/notify-app/notifications-admin
-    # Remove installed py3 packages
-    pip3 freeze | xargs pip3 uninstall -y
-else
-    echo "Directory does not exist, something went wrong!"
+    mkdir -p /home/notify-app/notifications-admin
 fi