From bf23b738a02c06405b74c47dfcfe6a696a2f1e55 Mon Sep 17 00:00:00 2001
From: Kai Kreuzer <kai@openhab.org>
Date: Tue, 5 Jan 2016 00:30:12 +0100
Subject: [PATCH] only install features if they are not already installed

Signed-off-by: Kai Kreuzer <kai@openhab.org>
---
 .../org/openhab/core/karaf/internal/FeatureInstaller.java  | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/bundles/org.openhab.core.karaf/src/main/java/org/openhab/core/karaf/internal/FeatureInstaller.java b/bundles/org.openhab.core.karaf/src/main/java/org/openhab/core/karaf/internal/FeatureInstaller.java
index 226a28d0c1..e8c496bb44 100644
--- a/bundles/org.openhab.core.karaf/src/main/java/org/openhab/core/karaf/internal/FeatureInstaller.java
+++ b/bundles/org.openhab.core.karaf/src/main/java/org/openhab/core/karaf/internal/FeatureInstaller.java
@@ -78,8 +78,11 @@ public class FeatureInstaller {
 
     private void installFeature(String name) {
         try {
-            featuresService.installFeature(name);
-            logger.info("Installed '{}'", name);
+            Feature feature = featuresService.getFeature(name);
+            if (feature != null && !featuresService.isInstalled(feature)) {
+                featuresService.installFeature(name);
+                logger.info("Installed '{}'", name);
+            }
         } catch (Exception e) {
             logger.error("Failed installing '{}': {}", name, e.getMessage());
         }