From e8c9f70004020877e53eb9c43c9b9adf6a6179e4 Mon Sep 17 00:00:00 2001
From: Valentin Lab <valentin.lab@kalysto.org>
Date: Tue, 23 Oct 2018 16:53:34 +0200
Subject: [PATCH] new: [apache] will detect efficiently changes and elegantly
 reload on configuration files modification.

---
 apache/hooks/pre_deploy |  8 ++++++++
 apache/lib/common       | 12 ++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100755 apache/hooks/pre_deploy

diff --git a/apache/hooks/pre_deploy b/apache/hooks/pre_deploy
new file mode 100755
index 00000000..e6c1a66b
--- /dev/null
+++ b/apache/hooks/pre_deploy
@@ -0,0 +1,8 @@
+#!/bin/bash
+## Should be executable N time in a row with same result.
+
+set -e
+
+. lib/common
+
+apache_config_hash || exit 1
diff --git a/apache/lib/common b/apache/lib/common
index 755ffe63..dde615af 100644
--- a/apache/lib/common
+++ b/apache/lib/common
@@ -510,3 +510,15 @@ $(__vhost_creds_statement | prefix "    ")
 
 EOF
 }
+
+
+apache_config_hash() {
+    debug "Adding config hash to enable recreating upon config change."
+    config_hash=$(find "$SERVICE_CONFIGSTORE/etc/apache2/sites-enabled" \
+                       -name \*.conf -exec md5sum {} \; | md5_compat) || exit 1
+    init-config-add "
+$MASTER_BASE_SERVICE_NAME:
+  labels:
+    - compose.config_hash=$config_hash
+"
+}