1 files changed, 50 insertions, 0 deletions
diff --git a/bin/trove-gc b/bin/trove-gc
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+#!/bin/sh
+#
+# Trove garbage collection script
+#
+# Copyright (C) 2014  Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+# This is a rudimentary garbage collector for Trove instances. It wraps the
+# `morph gc` command.
+#
+# Artifacts older than 1 week will be deleted, and artifacts less than 1 day
+# old will not be. Age is calculated from mtime, which is set at the time the
+# artifact is uploaded to the cache and after that is not updated by any Trove
+# components.
+#
+# Morph's default `cachedir-min-space` value is taken as the amount of space
+# to free. Pass --cachedir-min-space to this command to specify your own value.
+#
+# `morph gc` is designed for running on build machines so it expects there to
+# be a tempdir. A harmless side-effect of this script is that you'll get some
+# pointless directories created in /tmp/trove-gc-fake-tempdir.
+#
+# The 'remove all artifacts older than xx' rule is effectively disabled, to
+# prevent artifacts that are still needed but do not change often (such as
+# stage1 and stage2 of the bootstrap) from being automatically deleted. Those
+# artifacts will still be first to be removed in a low disk space condition,
+# which is an unfortunate consequence of the simple heuristic we are using
+# right now.
+
+set -eu
+
+/usr/bin/morph gc --no-default-config \
+    --cachedir=/home/cache \
+    --cachedir-artifact-delete-older-than=31557600000 \
+    --cachedir-artifact-keep-younger-than=86400 \
+    --tempdir=/tmp/trove-gc-fake-tempdir \
+    --tempdir-min-space=0M \
+    "$@"