From 504b86dfd24ac69b5c6a6b36c8020b0cc2500b93 Mon Sep 17 00:00:00 2001
From: Holger Levsen <holger@layer-acht.org>
Date: Wed, 17 Oct 2012 11:10:06 +0200
Subject: [PATCH] implement proper garbage collection, delete results if
 jenkins logs are deleted

---
 extract_storage_kernel+modules.sh | 40 +++++++++++++------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/extract_storage_kernel+modules.sh b/extract_storage_kernel+modules.sh
index 1b45d07..307c4c5 100755
--- a/extract_storage_kernel+modules.sh
+++ b/extract_storage_kernel+modules.sh
@@ -15,14 +15,16 @@ export PB_SUITE=$DISTRIBUTION
 export TARGET_BASE=/srv/storage-kernels
 
 if [ "$DISTRIBUTION" = "production-proposed-updates" ] ; then
-	export TARGET_DIR=$TARGET_BASE/master/$BUILD_NUMBER
+	export TARGET_NAME=master
 elif [ "$DISTRIBUTION" = "pre-staging" ] ; then
-	export TARGET_DIR=$TARGET_BASE/develop/$BUILD_NUMBER
+	export TARGET_NAME=develop
 else
 	echo "DISTRIBUTION must be 'production-proposed-updates' or 'pre-staging', exiting."
 	figlet "FAIL"
 	exit 1
 fi
+export TARGET_DIR=$TARGET_BASE/$TARGET_NAME/$BUILD_NUMBER
+export JOB_HOME=$JENKINS_HOME/jobs/$JOB_NAME/builds
 
 SCRIPTSDIR=$(dirname $0)
 BUILD_SCRIPT=$(mktemp)
@@ -49,30 +51,20 @@ sudo pbuilder --execute --bindmounts $TARGET_BASE -- $BUILD_SCRIPT
 rm $BUILD_SCRIPT
 
 
-# TODO: implement better garbage collection, allow to keep images
+echo "Garbage collection in debug mode..."
 #
-# cleanup $TARGET_DIR, keep MAX number of images
+# cleanup $TARGET_DIR, keep as many images as jenkins
 #
-MAX=15
-cd $TARGET_BASE
-for t in master develop ; do
-	cd $t
-	COUNT=0
-	for i in $(ls -atd1) ; do
-		if [ "$i" != "." ] ; then
-			let COUNT=COUNT+1
-			if [ $COUNT -gt $MAX ] ; then
-				echo sudo rm -rfv ./$i
-			else
-				echo "keeping $i"
-			fi
-		fi
-		if [ $COUNT -gt 0 ] ; then
-			figlet "Warning:"
-			echo "Garbage collection disabled."
-		fi
-	done
-	cd ..
+cd $TARGET_BASE/$TARGET_NAME
+# loop through all results of current target
+for i in $(ls -atd1) ; do
+	echo $i
+	# check if the jenkins build log still exists, if not, delete the old target as well
+	if [ "$i" != "." ] && [ ! -L $JOB_HOME/$i ] ; then
+		echo sudo rm -rfv ./$i
+	else
+		echo "keeping $i"
+	fi
 done
 
 figlet "OK"
-- 
2.39.5