git-cadd

#!/bin/bash

# Copyright (c) 2013: José Bollo (jobol), Stéphane Desneux (kooltux)
# All rights reserved.
#
# This program 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; version 2 of the License.
#
# This program 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 Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

error() { echo "git-cadd ERROR: $*" >&2; exit 1; }
info() { echo "git-cadd $*" >&2; }

git branch >/dev/null 2>&1 || error "not in a git repository"

[[ -r ~/.gitcache.conf ]] && . ~/.gitcache.conf

[[ -z "$GIT_CACHE_SERVER" ]] && error "variable GIT_CACHE_SERVER undefined"

declare -a args=("$@")

repo="${args[-1]}"
name="${args[-2]}"

info "adding remote $name for repo $repo"

git remote | grep -q "^$name\$" && error "remote $name already exists, remove it first"

info "asking $GIT_CACHE_SERVER a cache for $repo"
cpath=$(ssh -n "$GIT_CACHE_SERVER" gitcache-server --clone "$repo") || error "server failure"
[[ -z "$cpath" ]] && error "can't get a cache"
crepo="${GIT_CACHE_SERVER}:${cpath}"


info "Upstream repository: $repo"
info "Cache repository: $crepo"

args[$((${#args[@]}-1))]="$crepo"
git remote add "${args[@]}" >&2 || error "failure of git remote add ${args[@]}"

git remote set-url --push "$name" "$repo" >&2
git config "remote.$name.uploadpack" gitcache-server >&2

info "done. Git-cache is active for future fetch operations on remote $name"