gerrit_retarget_changes

ossi@ugly:~/bin > cat gerrit_retarget_changes
#! /bin/sh

# this is for gerrit 2.7

if [ $# -lt 3 ]; then
    echo "Usage: $0 old_branch new_branch change..." >&2
    exit 3
fi

oldbranch=$1
shift
newbranch=$1
shift
qry="change_key in ('$1'"
shift
while test -n "$1"; do
    qry="$qry, '$1'"
    shift
done
qry="$qry)"

fails=$(
ssh codereview.qt-project.org gerrit gsql <<EOF | sed -n 's,^ \([a-z0-9]\{40\,\}\)$,\1,ip'
select change_key from changes where dest_branch_name = 'refs/heads/$newbranch' and $qry;
EOF
)
if test -n "$fails"; then
    echo "These changes already exist on $newbranch:" $fails
    exit 1
fi
ssh codereview.qt-project.org gerrit gsql <<EOF
update changes set dest_branch_name = 'refs/heads/$newbranch' where dest_branch_name = 'refs/heads/$oldbranch' and $qry;
EOF
echo
ssh codereview.qt-project.org gerrit flush-caches --cache changes