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#!/bin/bash
#-------------------------------------------------------------------------------
# Copyright (C) 2006-2021 British Crown (Met Office) & Contributors.
#
# This file is part of FCM, tools for managing and building source code.
#
# FCM 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, either version 3 of the License, or
# (at your option) any later version.
#
# FCM 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 FCM. If not, see <http://www.gnu.org/licenses/>.
#-------------------------------------------------------------------------------
# NAME
# post-commit-bg
#
# SYNOPSIS
# post-commit-bg REPOS REV
#
# ARGUMENTS
# REPOS - the path to the Subversion repository
# REV - the revision of the commit
# TXN - the commit transaction that becomes the revision
#
# DESCRIPTION
# This script performs the post-commit tasks of a Subversion repository in
# the background.
#
# The script does the following:
# 1. Creates an incremental revision dump of the current revision.
# 2. Update corresponding Trac environment, if relevant.
# 3. Size check. Warn if transaction exceeds 2MB, or the number of
# MB specified in "$REPOS/hooks/post-commit-size-threshold.conf".
# 4. If this changeset has a change to "^/svnperms.conf", install its HEAD
# revision at "$REPOS/hooks/", or remove it from "$REPOS/hooks/" if it is
# removed from the HEAD.
# 5. Runs "$REPOS/hooks/post-commit-bg-custom" and/or
# "$REPOS/hooks/post-commit-background-custom", if available.
# 6. E-mails the host user account on error.
#
# ENVIRONMENT VARIABLES
# FCM_SITE_HOME
# The root location of site configuration.
# FCM_SVN_HOOK_COMMIT_DUMP_DIR
# The path to dump commit deltas. Generate a commit delta if specified.
# FCM_SVN_HOOK_TRAC_ROOT_DIR
# The root directories of Trac environments. Update corresponding Trac
# environment if specified.
# FCM_SVN_HOOK_REPOS_SUFFIX
# A suffix that should be removed from the basename of REPOS to get the
# name of the Trac environment. (Default is "".)
#
# FILES
# $REPOS/hooks/post-commit-bg-custom
# $REPOS/hooks/post-commit-background-custom
#-------------------------------------------------------------------------------
set -eu
. "$(dirname $0)/trac_hook"
REPOS=$1
REV=$2
TXN=$3
export PATH=${PATH:-'/usr/local/bin:/bin:/usr/bin'}:$(dirname $0)
THIS=$(basename $0)
USER=${USER:-$(whoami)}
LOG_REV="$REPOS/log/$THIS-$REV.log"
main() {
local RET_CODE=0
local NOW=$(date -u +%FT%H:%M:%SZ)
local AUTHOR=$(svnlook author -r "$REV" "$REPOS")
echo "$NOW+ $REV by $AUTHOR"
# Dump revision delta
if [[ -n ${FCM_SVN_HOOK_COMMIT_DUMP_DIR:-} ]]; then
if [[ ! -d "$FCM_SVN_HOOK_COMMIT_DUMP_DIR" ]]; then
mkdir -p "$FCM_SVN_HOOK_COMMIT_DUMP_DIR" || true
fi
local NAME=$(basename "$REPOS")
local DUMP="$FCM_SVN_HOOK_COMMIT_DUMP_DIR/$NAME-$REV.gz"
local TMP_DUMP="$FCM_SVN_HOOK_COMMIT_DUMP_DIR/$NAME-$REV-tmp.gz"
echo "svnadmin dump -r$REV --incremental --deltas $REPOS | gzip \\"
echo " | (dd 'conv=fsync' \"of=$TMP_DUMP\" 2>/dev/null)"
svnadmin dump "-r$REV" --incremental --deltas "$REPOS" | gzip \
| (dd 'conv=fsync' "of=$TMP_DUMP" 2>/dev/null) || RET_CODE=$?
if [[ -s "${TMP_DUMP}" ]]; then
echo "mv \"${TMP_DUMP}\" \"${DUMP}\""
mv "${TMP_DUMP}" "${DUMP}" || RET_CODE=$?
else
echo "[WARN] ${NAME}-${REV}: zero dump size" >&2
rm -f "${TMP_DUMP}"
fi
fi
# Resync Trac
trac_hook "$REPOS" "$REV" added || RET_CODE=$?
# Check size - send warning email if threshold exceeded
local MB=1048576
local THRESHOLD=2
local SIZE_THRESHOLD_FILE="${REPOS}/hooks/post-commit-size-threshold.conf"
if [[ -f "${SIZE_THRESHOLD_FILE}" && -r "${SIZE_THRESHOLD_FILE}" ]]; then
THRESHOLD=$(<"${SIZE_THRESHOLD_FILE}")
fi
local REV_FILE="${REPOS}/db/revs/$((${REV} / 1000))/${REV}"
local REV_FILE_SIZE=$(du -b -s "${REV_FILE}" | cut -f 1)
if ((${REV_FILE_SIZE} > ${THRESHOLD} * ${MB})); then
echo "REV_FILE_SIZE=${REV_FILE_SIZE} # >${THRESHOLD}MB"
RET_CODE=1
else
echo "REV_FILE_SIZE=${REV_FILE_SIZE} # <${THRESHOLD}MB"
fi
# Install commit.conf and svnperms.conf, if necessary
local NAME=$(basename "${REPOS}")
if [[ -n "${FCM_SVN_HOOK_REPOS_SUFFIX:-}" ]]; then
NAME="${NAME%${FCM_SVN_HOOK_REPOS_SUFFIX}}"
fi
local CHANGED=$(svnlook changed -r "${REV}" "${REPOS}")
local FILE=
for FILE in 'commit.conf' 'svnperms.conf'; do
# Ignore if there is a site override
if [[ -n "${FCM_SITE_HOME:-}" \
&& -e "${FCM_SITE_HOME:-}/svn-hooks/${NAME}/${FILE}" ]]
then
continue
fi
if grep -q "^....${FILE}\$" <<<"${CHANGED}"; then
# Don't specify revision, so always look at latest.
if svnlook filesize "${REPOS}" "${FILE}" >/dev/null 2>&1; then
echo "svnlook cat ${REPOS} ${FILE} >${REPOS}/hooks/${FILE}"
svnlook cat "${REPOS}" "${FILE}" >"${REPOS}/hooks/${FILE}"
else
echo "rm -f ${REPOS}/hooks/${FILE}"
rm -f "${REPOS}/hooks/${FILE}"
fi
fi
done
# If relevant, notify owners
local COMMIT_CONFIG="${REPOS}/hooks/commit.conf"
if grep -q 'notify-owner' "$COMMIT_CONFIG" 2>/dev/null; then
local ADDRS=$('post-commit-bg-notify-who' "$REPOS" "$REV" "$TXN")
if [[ -n $ADDRS ]]; then
SUBJECT="-s$(basename $REPOS)@$REV by $AUTHOR"
FROM=
if [[ -n ${FCM_SVN_HOOK_NOTIFICATION_FROM:-} ]]; then
FROM="-r${FCM_SVN_HOOK_NOTIFICATION_FROM:-}"
fi
echo -n "svn log -v -r \"$REV\" \"file://$REPOS\""
echo " | mail \"$FROM\" \"$SUBJECT\" \"$ADDRS\""
svn log -v -r "$REV" "file://$REPOS" \
| mail "$FROM" "$SUBJECT" "$ADDRS"
fi
fi
# Custom hook
local CUSTOM_HOOK=
for CUSTOM_HOOK in \
"$REPOS/hooks/$THIS-custom" \
"$REPOS/hooks/post-commit-background-custom"
do
if [[ -x "$CUSTOM_HOOK" ]]; then
echo "$CUSTOM_HOOK $REPOS $REV $TXN"
"$CUSTOM_HOOK" "$REPOS" "$REV" "$TXN" || RET_CODE=$?
fi
done
echo "RET_CODE=$RET_CODE"
return $RET_CODE
}
if ! main 1>$LOG_REV 2>&1; then
if [[ -n ${FCM_SVN_HOOK_ADMIN_EMAIL:-} ]]; then
mail -s "[$THIS] $REPOS@$REV" "$FCM_SVN_HOOK_ADMIN_EMAIL" <"$LOG_REV" \
|| true
fi
fi
cat "$LOG_REV"
rm -f "$LOG_REV"
exit
|
