From 3a42041dac2f588445ab5a8b5511bc299c185243 Mon Sep 17 00:00:00 2001
From: Nolan Darilek <nolan@thewordnerd.info>
Date: Tue, 14 Mar 2017 14:26:26 -0500
Subject: [PATCH] Automatically purge old cache content on launch (closes #8.)

---
 .sandstorm/changelog.md         |  7 ++++++-
 .sandstorm/launcher.sh          | 24 ++++++++++++++++++++++++
 .sandstorm/sandstorm-files.list |  1 +
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/.sandstorm/changelog.md b/.sandstorm/changelog.md
index 62c58c5..6042050 100644
--- a/.sandstorm/changelog.md
+++ b/.sandstorm/changelog.md
@@ -1,6 +1,11 @@
-# 2016-06-26a-sandstorm5 (2016-11-17)
+# 2016-06-26a-sandstorm6 (2017-03-14)
+
+ * Now cleans up cached content older than 30 days, as well as removing stale locks and other useless data
+
+# 2016-06-26a-sandstorm5 (2017-03-14)
 
  * Create default @user ACL rule
+ * Fix issue where recursive symlinks broke previous grains
 
 # V2016-06-26a-sandstorm4 (2016-10-14)
 
diff --git a/.sandstorm/launcher.sh b/.sandstorm/launcher.sh
index 02e6392..1dfe6d7 100644
--- a/.sandstorm/launcher.sh
+++ b/.sandstorm/launcher.sh
@@ -49,5 +49,29 @@ grep -Ev '^($|#)' /opt/app/dokuwiki/data.orig/deleted.files | xargs -n 1 rm -vrf
 
 cp /opt/app/acl.auth.php /var/lib/dokuwiki/conf
 
+function cleanup()
+{
+    local data_path="$1"        # full path to data directory of wiki
+    local retention_days="$2"   # number of days after which old files are to be removed
+ 
+    # purge files older than ${retention_days} days from attic and media_attic (old revisions)
+    find "${data_path}"/{media_,}attic/ -type f -mtime +${retention_days} -delete
+ 
+    # remove stale lock files (files which are 1-2 days old)
+    find "${data_path}"/locks/ -name '*.lock' -type f -mtime +1 -delete
+ 
+    # remove empty directories
+    find "${data_path}"/{attic,cache,index,locks,media,media_attic,media_meta,meta,pages,tmp}/ \
+        -mindepth 1 -type d -empty -delete
+ 
+    # remove files older than ${retention_days} days from the cache
+    if [ -e "${data_path}"/cache/?/ ]
+    then
+        find "${data_path}"/cache/?/ -type f -mtime +${retention_days} -delete
+    fi
+}
+
+cleanup /var/lib/dokuwiki/data    30
+
 # Start nginx.
 /usr/sbin/nginx -c /opt/app/.sandstorm/service-config/nginx.conf -g "daemon off;"
diff --git a/.sandstorm/sandstorm-files.list b/.sandstorm/sandstorm-files.list
index 5ed573b..c660023 100644
--- a/.sandstorm/sandstorm-files.list
+++ b/.sandstorm/sandstorm-files.list
@@ -5284,6 +5284,7 @@ sandstorm-http-bridge
 sandstorm-http-bridge-config
 sandstorm-manifest
 usr/bin/file
+usr/bin/find
 usr/bin/id
 usr/bin/rsync
 usr/bin/touch