blob: 5408da74cc5ff9f927f7d0356d3b04da06a76bbb [file] [log] [blame]
#!/system/bin/sh
# Copyright (C) 2014 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Run tasks periodically.
# Usage: $0 <delay_seconds> <timeout_seconds> <task_name> <task_binary>
#
# Executes task <task_name> by running <task_binary> every <delay_seconds>.
set -e -u
SCRIPT_NAME="$(basename "$0")"
CHECK_DELAY=300 # Check every 5 minutes.
KILL_DELAY=10 # How long to let the job clean up after a timeout.
# Let the unittests override.
: ${SPOOL_DIR:=/data/misc/crash_reporter/spool/cron-lite}
loginfo() {
log -p i -t "${SCRIPT_NAME}" "$@"
}
trap "loginfo 'exiting'" EXIT
check_and_fix_spool_paths() {
# Avoid weird spool paths if possible.
rm -f "$(dirname "${SPOOL_DIR}")" "${SPOOL_DIR}" 2>/dev/null || :
mkdir -p "${SPOOL_DIR}"
if [ ! -O "${SPOOL_DIR}" -o ! -d "${SPOOL_DIR}" ]; then
loginfo "Spool directory is damaged. Aborting!"
exit 1
fi
}
main() {
local delay="$1"
local timeout="$2"
local name="$3"
local spool_file="${SPOOL_DIR}/${name}"
shift 3
[ -z "${delay}" ] && exit 1
[ -z "${timeout}" ] && exit 1
[ -z "${name}" ] && exit 1
[ $# -eq 0 ] && exit 1
check_and_fix_spool_paths
while true; do
# Allow the sleep to be killed manually without terminating the handler.
# Send stderr to /dev/null to suppress the shell's "Terminated" message.
sleep $(( CHECK_DELAY + KILL_DELAY )) 2>/dev/null || true
[ ! -e "${spool_file}" ] && touch "${spool_file}"
local last_rotation="$(stat -c "%Y" "${spool_file}" 2>/dev/null || echo 0)"
local now="$(date +%s)"
local time_diff=$((now - last_rotation))
if [ ${time_diff} -gt ${delay} ]; then
rm "${spool_file}" || true
touch "${spool_file}"
loginfo "${name}: running $*"
timeout -k ${KILL_DELAY} ${timeout} "$@" || true
loginfo "${name}: job completed"
fi
done
}
main "$@"