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#!/bin/sh

REPO="/root/repo"
REAL="/var/lib/bcfg2"
OLDPWD="$(pwd)"

error() {
    echo "$@" 1>&2
    cd "$OLDPWD" >/dev/null
    exit 1
}

# pre flight checks
cd "$REPO" >/dev/null

if [ -n "$(git status --porcelain)" ]; then
    error "$REPO: git repositiory contains uncommited changes."
fi

git fetch origin 2>/dev/null
git push origin master 2>/dev/null

if [ -n "$(git rev-list HEAD..origin/master)" ]; then
    error "$REPO: HEAD does not equal to origin/master."
fi

# update symlinks (needed for repo validation)
ln -s -f "$REAL/Metadata/pingdata.xml" Metadata/pingdata.xml
ln -s -f "$REAL/Packages/cache" Packages/cache
ln -s -f "$REAL/Probes/probed.xml" Probes/probed.xml
ln -s -f "$REAL/Properties/secrets.xml" Properties/secrets.xml

if ! bcfg2-lint -Q "$REPO"; then
    error "$REPO: bcfg2-lint detected errors."
fi

# update real repository
cd "$REAL" >/dev/null

if ! git remote update --prune >/dev/null 2>&1; then
    error "$REAL: git remote update --prune failed"
fi

git fetch --quiet --tags 2>/dev/null ||
    error "$REAL: git fetch failed."

git checkout --quiet --force master ||
    error "$REAL: git checkout failed."

git reset --quiet --hard origin/master ||
    error "$REAL: git reset failed."

git clean --quiet --force -d ||
    error "$REAL: git clean failed"

bcfg2-ping-sweep

cd "$OLDPWD" >/dev/null