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|
#! /usr/bin/env bash
# Mirror repositories. For example:
#
# mrrepo -s git.example.org /var/scm
#
# Will first download (via http or https if -s specified) the manifest file
# from git.example.org which should list all publicly available repositories.
# It will then mirror each repository in /var/scm using the git protocol.
#
# -v
# Run verbose.
#
# -s
# Use https rather than http to download the manifest (git protocol is still
# used for mirroring).
#
# Notes:
# - needs curl
# - run from cron as user scm (which belongs to the group scm).
#
usage="usage: $0 [-v] [-s] <host> <path>"
owd=`pwd`
trap "{ cd $owd; exit 1; }" ERR
set -o errtrace # Trap in functions.
function info () { echo "$*" 1>&2; }
function error () { info "$*"; exit 1; }
prot=http
host=
path=
verb=0
while [ $# -gt 0 ]; do
case $1 in
-v)
verb=1
shift
;;
-s)
prot=https
shift
;;
*)
if [ -z "$host" ]; then
host=$1
elif [ -z "$path" ]; then
path=$1
else
error "$usage"
fi
shift
;;
esac
done
if [ -z "$host" -o -z "$path" ]; then
error "$usage"
fi
if [ ! -d "$path" ]; then
error "$path is not a directory"
fi
cd $path
curl_ops="-f" # Fail on HTTP errors.
curl_ops+=" --max-time 10" # Finish in 10 seconds.
if [ $verb -ge 1 ]; then
curl_ops+=" --progress-bar"
else
curl_ops+=" -s -S" # Silent but show errors.
fi
function fetch () # <url> [<curl-options>]
{
local u=$1; shift
if [ $verb -ge 1 ]; then
info "curl $curl_ops $* $u"
fi
curl $curl_ops $* $u
}
fetch $prot://$host/manifest -z manifest -o manifest
new=()
while read r || [ -n "$r" ]; do
new+=("$r")
done <manifest
# Find all existing repositories (directories that end with .git).
#
old=(`find . -type d -name '*.git' -print -prune | sed -e 's%^./%%' -`)
git_ops=
if [ $verb -eq 0 ]; then
git_ops+="-q"
fi
for r in ${new[@]}; do
if [ -d $r ]; then
if [ -z "$(ls -A $r)" ]; then
rm -r $r
fi
fi
if [ ! -d $r ]; then
if [ $verb -ge 1 ]; then
info "new repository $r in manifest, cloning"
info "git clone $git_ops --mirror git://$host/$r $r"
fi
mkdir -p $r
git clone $git_ops --mirror git://$host/$r $r
# Also copy the description file.
#
fetch $prot://$host/$r/description -o $r/description
else
if [ $verb -ge 1 ]; then
info "existing repository $r, fetching"
info "git -C $r fetch $git_ops --tags"
fi
git -C $r fetch $git_ops --tags
fi
done
# Remove old repositories.
#
for o in ${old[@]}; do
for n in ${new[@]}; do
if [ $o = $n ]; then
o=
break
fi
done
if [ -n "$o" ]; then
if [ $verb -ge 1 ]; then
info "repository $o is no longer in manifest, removing"
fi
rm -rf $o
fi
done
cd $owd
|
