[DRE-commits] [diaspora-installer] 03/13: add preinst for backup and sidekiq

[Praveen Arimbrathodiyil]

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praveen pushed a commit to branch 04x-05x_update
in repository diaspora-installer.

commit 764276a7b6399c47c394697c5d8c1571a79512e4
Author: Praveen Arimbrathodiyil <praveen at debian.org>
Date:   Tue May 19 18:51:50 2015 +0530

    add preinst for backup and sidekiq
---
 debian/preinst | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)

diff --git a/debian/preinst b/debian/preinst
new file mode 100755
index 0000000..205bede
--- /dev/null
+++ b/debian/preinst
@@ -0,0 +1,81 @@
+#! /bin/sh
+set -e
+
+# Read variables
+. /etc/diaspora/diaspora-common.conf
+. ${diaspora_conf}
+
+# Check if PostgreSQL database diaspora_production exist
+if su diaspora -s /bin/sh -c "psql  diaspora_production -c ''"
+then
+    echo "You already have a PostgreSQL database named 'diaspora_production'..."
+    export dbexist='true'
+fi
+
+case "$1" in
+    upgrade)
+        if ! test -z $dbexist
+        then
+            # Show current version of package
+            installed_diaspora_version=`echo $2|cut -d+ -f1`
+            installed_diaspora_major_version=`echo ${installed_diaspora_version} |cut -d. -f1,2`
+            if test $(echo "${installed_diaspora_major_version} < 0.5" |bc) -eq 1
+            then
+                echo "Stopping diaspora..."
+                invoke-rc.d diaspora stop
+                cd ${diaspora_home}
+                . ${diaspora_conf}
+                echo "Run bundle install..." 
+                su diaspora -s /bin/sh -c 'bundle install'
+                echo "Run sidekiq for 5 minutes..."
+                echo "Current time is `date`..."
+                su diaspora -s /bin/sh -c 'bundle exec sidekiq&'
+                sleep 1m
+                echo "Stop sidekiq..."
+                su diaspora -s /bin/sh -c 'pkill -u diaspora -f sidekiq' || true
+            fi
+            
+            # Backup the previous version
+            # Just keep the config and vendor/bundle
+            backup() {
+                mv ${diaspora_home}/config ${diaspora_home}-config
+                mv ${diaspora_home}/vendor/bundle ${diaspora_home}-vendor-bundle
+                mv ${diaspora_home}/.bundle ${diaspora_home}.bundle
+                mv ${diaspora_home} ${diaspora_home}-backup.`openssl rand -hex 4`
+                mkdir ${diaspora_home}
+                mkdir ${diaspora_home}/vendor
+                cp -r ${diaspora_home}-config ${diaspora_home}/config
+                cp -r ${diaspora_home}-vendor-bundle ${diaspora_home}/vendor/bundle
+                cp -r ${diaspora_home}.bundle ${diaspora_home}/.bundle
+                chown ${diaspora_user}: -R ${diaspora_home}
+                ln -s /usr/bin ${diaspora_home}
+            }
+            backup || true
+        fi
+        ;;
+    install)
+        if ! test -z $dbexist
+        then
+            # new install should not see existing database
+            echo ""
+            echo "========================================================================="
+            echo "Aborting installation..."
+            echo "You may drop the database and try reinstalling"
+            echo "Command to drop the database: su postgres -c 'dropdb diaspora_production'"
+            echo "WARNING: This will remove all the data in diaspora_production database."
+            echo "========================================================================="
+            echo ""
+            exit 1
+        fi
+        ;;
+    abort-upgrade|install)
+        ;;
+    *)
+        echo "preinst called with unknown argument \`$1'" >&2
+        exit 1
+        ;;
+esac
+
+#DEBHELPER#
+
+exit 0

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