+++ /dev/null
-#!/bin/bash
-
-# initiate a staged mirror update from sync-source for a component.
-#
-# if we have a serial file and we got a serial on the command line, only sync if the serial is different
-
-# Copyright (c) 2012 Peter Palfrader
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-
-set -e
-set -u
-
-NAME="$(basename "$0")"
-
-usage() {
- echo "Usage: $0 [--one-stage] <componentdir> <sync-source> [<serial>]"
-}
-
-if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then usage; exit 0; fi
-
-one_stage=0
-while :; do
- case "${1:-}" in
- --)
- shift
- break;
- ;;
- --one-stage)
- shift
- one_stage=1
- ;;
- -*) usage >&2
- exit 1
- ;;
- *)
- break
- ;;
- esac
-done
-
-COMPONENTDIR=${1:-}; shift
-SYNC_SOURCE=${1:-}; shift
-SYNC_SERIAL=${1:-}; shift || true
-if [ -z "$COMPONENTDIR" ]; then usage >&2; exit 1; fi
-if [ -z "$SYNC_SOURCE" ]; then usage >&2; exit 1; fi
-COMPONENT="$(basename "${COMPONENTDIR}")"
-
-RSYNC="rsync"
-RSYNC_BASE_OPTIONS="-rtvz --delete --links --hard-links --safe-links"
-RSYNC_SSH_OPTIONS="ssh -o AddressFamily=inet -o BatchMode=yes"
-
-LOGDIR="$HOME/logs"
-LOGFILE="$LOGDIR/$NAME-run-${COMPONENT}.log"
-
-
-ALPHA="tree-a"
-BRAVO="tree-b"
-ACTIVE="cur"
-
-CNF_FILE="$HOME/etc/$NAME.conf"
-! [ -e "$CNF_FILE" ] || . "$CNF_FILE"
-
-SOURCE="${SYNC_SOURCE}/"
-COMPONENTDIR="${COMPONENTDIR}/"
-
-###############################################
-
-# point stdout and stderr to the logfile if it's not a tty.
-# save stdout to fd5 for communications with the master
-
-log_setup() {
- mkdir -p "$LOGDIR"
- if ! [ -t 1 ]; then
- # move current stdout to fd5 and reopen to logfile
- exec 5>&1-
- exec 1>> "$LOGFILE"
- else
- # duplicate stdout to fd5
- exec 5>&1
- fi
- if ! [ -t 2 ]; then
- exec 2>> "$LOGFILE"
- fi
-}
-
-log() {
- echo "[$(date)][$NAME][$$] $1"
-}
-
-lock() {
- mkdir -p "$COMPONENTDIR"
- exec 200< "$COMPONENTDIR"
- if ! flock -e 200; then
- log "Cannot acquire lock."
- echo >&5 "[MSM] LOCK-ERROR"
- exit 1
- fi
- log "Got the lock."
-}
-
-###############################################
-
-
-log_setup
-log "called with $*"
-lock
-
-if [ -e "${COMPONENTDIR}${ACTIVE}" ] && [ "$(readlink "${COMPONENTDIR}${ACTIVE}")" = "$ALPHA" ] ; then
- staging="$BRAVO"
- active="$ALPHA"
-elif [ -e "${COMPONENTDIR}${ACTIVE}" ] && [ "$(readlink "${COMPONENTDIR}${ACTIVE}")" != "$BRAVO" ] ; then
- echo >&5 "Invalid state of ${COMPONENTDIR}${ACTIVE}."
- exit 1
-else
- staging="$ALPHA"
- active="$BRAVO"
-fi
-log "active is $active; staging is $staging"
-
-rsync_source="${SOURCE}"
-rsync_curactive="${COMPONENTDIR}${active}/"
-rsync_target="${COMPONENTDIR}${staging}/"
-
-if [ -e "$rsync_curactive/.serial" ] && [ -n "$SYNC_SERIAL" ] && [ "$(cat $rsync_curactive/.serial)" = "$SYNC_SERIAL" ]; then
- log "active is already at serial $SYNC_SERIAL. No action required."
- echo >&5 "[MSM] ALREADY-CURRENT"
- exit 0
-fi
-
-echo >&5 "[MSM] STAGE1-START"
-log "Running $RSYNC $RSYNC_BASE_OPTIONS -e $RSYNC_SSH_OPTIONS --link-dest $rsync_curactive $rsync_source $rsync_target"
-$RSYNC $RSYNC_BASE_OPTIONS -e "$RSYNC_SSH_OPTIONS" --link-dest "$rsync_curactive" "$rsync_source" "$rsync_target"
-log "rsync done."
-echo >&5 "[MSM] STAGE1-DONE"
-if [ "$one_stage" -gt 0 ]; then
- action="go"
-else
- read action
-fi
-
-case "$action" in
- go)
- ln --symbolic --force --no-target-directory "$staging" "${COMPONENTDIR}$ACTIVE"
- rm -rf "$rsync_curactive"
- echo >&5 "[MSM] STAGE2-DONE"
- log "stage2 done"
- ;;
- abort)
- echo >&5 "[MSM] STAGE2-ABORT"
- log "stage2 abort"
- ;;
- *)
- echo >&5 "[MSM] STAGE2-UNKNOWN-ACTION $action"
- log "stage2 unknown action $action"
- exit 1
- ;;
-esac
-
-savelog "$LOGFILE"