#!/bin/bash

# Copyright 2016 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This script is used on GS purge servers to update and run the purge
# scripts repeatedly.  These GCE servers are expected to set custom
# metadata (via the GCE web UI) with the key "purge_target" and a
# value of "chromeos-release" or "chromeos-image-archive" based on
# which bucket a given server is supposed to clean.

LOG=~/purge.log
ATTR_URL="http://metadata.google.internal/computeMetadata/v1/instance/attributes/purge_target"
CHROMITE_BIN="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

cd "${CHROMITE_BIN}"

TARGET=$(curl -H "Metadata-Flavor: Google" ${ATTR_URL})
mv -f "${LOG}" "${LOG}.previous"
(date \
  && git pull \
  && ./purge_builds --debug "--${TARGET}" \
  && date) >>"${LOG}" 2>&1

# Wait a while.
echo "Sleeping for 24 hours."
sleep 24h