From 6a69cf5c88070407374e4cfe9e9e469ecad7e3b7 Mon Sep 17 00:00:00 2001
From: Ben Langfeld <ben@langfeld.me>
Date: Thu, 11 Jul 2019 15:56:07 -0300
Subject: [PATCH 1/4] Allow rolling backups to a limit

When `BACKUP_COUNT` is specified on the backup container, a backup job will ensure we keep the newest `BACKUP_COUNT` backups to preserve space in our target volume.
---
 backup/pvc/bin/backup.sh | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/backup/pvc/bin/backup.sh b/backup/pvc/bin/backup.sh
index 631ca5b8..fe9f9c82 100644
--- a/backup/pvc/bin/backup.sh
+++ b/backup/pvc/bin/backup.sh
@@ -6,6 +6,11 @@ set -eo pipefail
 [[ -z "${BACKUP_DIR}" ]] && echo "Required 'BACKUP_DIR' env not set" && exit 1;
 [[ -z "${JENKINS_HOME}" ]] && echo "Required 'JENKINS_HOME' env not set" && exit 1;
 
+if [[ ! -z "${BACKUP_COUNT}" ]]; then
+  echo "Trimming to only $((BACKUP_COUNT-1)) recent backups in preparation for new backup"
+  ls -1t ${BACKUP_DIR} | tail -n +${BACKUP_COUNT} | xargs -I '{}' rm -f ${BACKUP_DIR}/'{}'
+fi
+
 backup_number=$1
 echo "Running backup"
 
@@ -14,4 +19,4 @@ tar -C ${JENKINS_HOME} -czf "${BACKUP_DIR}/${backup_number}.tar.gz" --exclude jo
 [[ ! -s ${BACKUP_DIR}/${backup_number}.tar.gz ]] && echo "backup file '${BACKUP_DIR}/${backup_number}.tar.gz' is empty" && exit 1;
 
 echo Done
-exit 0
\ No newline at end of file
+exit 0

From 8cf9c7ba94ee435d2fd4ff1c78a797ec27ef3aba Mon Sep 17 00:00:00 2001
From: Ben Langfeld <ben@langfeld.me>
Date: Thu, 11 Jul 2019 16:03:03 -0300
Subject: [PATCH 2/4] Document BACKUP_COUNT

---
 docs/getting-started.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/getting-started.md b/docs/getting-started.md
index 4e63cd7b..4dc6799b 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -423,6 +423,8 @@ spec:
         value: /backup
       - name: JENKINS_HOME
         value: /jenkins-home
+      - name: BACKUP_COUNT
+        value: "2" # keep only the 2 most recent backups
       image: virtuslab/jenkins-operator-backup-pvc:v0.0.3 # look at backup/pvc directory
       imagePullPolicy: IfNotPresent
       volumeMounts:

From f5397ed8acd570c8d825670856a89ef1f5e44908 Mon Sep 17 00:00:00 2001
From: Ben Langfeld <ben@langfeld.me>
Date: Thu, 11 Jul 2019 16:05:03 -0300
Subject: [PATCH 3/4] Bump backup image version

---
 backup/pvc/VERSION.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backup/pvc/VERSION.txt b/backup/pvc/VERSION.txt
index f9cece58..7df503e6 100644
--- a/backup/pvc/VERSION.txt
+++ b/backup/pvc/VERSION.txt
@@ -1 +1 @@
-v0.0.3
+v0.0.4

From d5c453dd1b87e6bc4451946422f2b37b02d985aa Mon Sep 17 00:00:00 2001
From: Ben Langfeld <ben@langfeld.me>
Date: Thu, 11 Jul 2019 16:05:33 -0300
Subject: [PATCH 4/4] Document correct backup image version

---
 docs/getting-started.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/getting-started.md b/docs/getting-started.md
index 4dc6799b..93c661bf 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -425,7 +425,7 @@ spec:
         value: /jenkins-home
       - name: BACKUP_COUNT
         value: "2" # keep only the 2 most recent backups
-      image: virtuslab/jenkins-operator-backup-pvc:v0.0.3 # look at backup/pvc directory
+      image: virtuslab/jenkins-operator-backup-pvc:v0.0.4 # look at backup/pvc directory
       imagePullPolicy: IfNotPresent
       volumeMounts:
       - mountPath: /jenkins-home # Jenkins home volume