57 lines
980 B
Bash
57 lines
980 B
Bash
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#!/bin/bash
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set -e
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function usage {
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echo "Usage: $PROGNAME <local-path> <remote-path>" 1>&2
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echo " eg: $PROGNAME /data s3://bucket/dir" 1>&2
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}
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function error_exit {
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echo "${PROGNAME}: ${1:-"Unknown Error"}" 1>&2
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exit 1
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}
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if [ $# != "2" ]; then
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usage
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error_exit "not enough arguments"
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fi
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PROGNAME=$0
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LOCAL=$1
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REMOTE=$2
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function restore {
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if [ "$(ls -A $LOCAL)" ]; then
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error_exit "local directory is not empty"
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fi
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echo "restoring $REMOTE => $LOCAL"
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if ! s3cmd --access_key="$ACCESS_KEY" --secret_key="$SECRET_KEY" sync "$REMOTE/" "$LOCAL/"; then
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error_exit "restore failed"
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fi
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}
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function backup {
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echo "backup $LOCAL => $REMOTE"
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if ! s3cmd --access_key="$ACCESS_KEY" --secret_key="$SECRET_KEY" sync --delete-removed "$LOCAL/" "$REMOTE/"; then
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error_exit "backup failed"
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fi
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}
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function idle {
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echo "ready"
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while true; do
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sleep 42 &
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wait $!
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done
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}
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restore
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trap backup SIGHUP SIGINT SIGTERM
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trap "backup; idle" USR1
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idle
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