From fcfa9ac0649a1433f5e6057131706629e3b6b81c Mon Sep 17 00:00:00 2001
From: Tunghsiao Liu <t@sparanoid.com>
Date: Fri, 26 Feb 2016 14:54:34 +0800
Subject: [PATCH 1/2] Add Slack incoming webhook notifications support

---
 duplicity-backup.sh | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/duplicity-backup.sh b/duplicity-backup.sh
index d36ea7e..e7f81e4 100755
--- a/duplicity-backup.sh
+++ b/duplicity-backup.sh
@@ -370,6 +370,15 @@ email_logfile()
   fi
 }
 
+send_notification()
+{
+  if [ ! -z "$NOTIFICATION_SERVICE" ]; then
+    if [ "$NOTIFICATION_SERVICE" = "slack" ]; then
+      curl -X POST -H 'Content-type: application/json' --data "{\"text\": \"$NOTIFICATION_CONTENT\", \"channel\": \"$SLACK_CHANNEL\", \"username\": \"$SLACK_USERNAME\", \"icon_emoji\": \":$SLACK_EMOJI:\"}" ${SLACK_HOOK_URL}
+    fi
+  fi
+}
+
 get_lock()
 {
   echo "Attempting to acquire lock ${LOCKFILE}" >> ${LOGFILE}
@@ -858,6 +867,20 @@ else
   email_logfile
 fi
 
+if [ "$NOTIFICATION_FAILURE_ONLY" = "yes" ]; then
+  if [ ${BACKUP_ERROR} ]; then
+    NOTIFICATION_CONTENT="BACKUP ERROR: ${HOSTNAME} - \`$LOGFILE\`"
+    send_notification
+  fi
+else
+  if [ ${BACKUP_ERROR} ]; then
+    NOTIFICATION_CONTENT="BACKUP ERROR: ${HOSTNAME} - \`$LOGFILE\`"
+  else
+    NOTIFICATION_CONTENT="BACKUP OK: ${HOSTNAME} - \`$LOGFILE\`"
+  fi
+  send_notification
+fi
+
 # remove old logfiles
 # stops them from piling up infinitely
 [[ -n "${REMOVE_LOGS_OLDER_THAN}" ]] && find ${LOGDIR} -type f -mtime +"${REMOVE_LOGS_OLDER_THAN}" -delete

From 3eabe0dce5498e11cd9a470e8b833626893f1355 Mon Sep 17 00:00:00 2001
From: Tunghsiao Liu <t@sparanoid.com>
Date: Fri, 26 Feb 2016 14:56:31 +0800
Subject: [PATCH 2/2] Add config sample for Slack notifications

---
 duplicity-backup.conf.example | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/duplicity-backup.conf.example b/duplicity-backup.conf.example
index 3018511..e9273a6 100644
--- a/duplicity-backup.conf.example
+++ b/duplicity-backup.conf.example
@@ -387,6 +387,24 @@ MAIL="mailx"     # default command for Linux mail
 #MAIL="msmtp"
 
 
+# ------------------------------------------------------------------------------
+# NOTIFICATIONS
+# ------------------------------------------------------------------------------
+#
+# Third-pary notification services. If no NOTIFICATION_SERVICE provided, no
+# notifications will be sent.
+
+# NOTIFICATION_SERVICE="slack"
+NOTIFICATION_SERVICE=
+NOTIFICATION_FAILURE_ONLY="yes" # send notifications only if there was an error while creating backup
+
+# Provider: Slack
+SLACK_HOOK_URL="https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX"
+SLACK_CHANNEL="#general"
+SLACK_USERNAME="duplicity-backup"
+SLACK_EMOJI="package"
+
+
 # ------------------------------------------------------------------------------
 # TROUBLESHOOTING
 # ------------------------------------------------------------------------------