gistfile1.py

def get_error_log(prefix):
    def error_log(msg_or_exc):
        global unmounted
        if hasattr(msg_or_exc, 'http_status') and \
                msg_or_exc.http_status == 507:
            identifier = '%s:%s/%s'
            if identifier not in unmounted:
                unmounted.append(identifier)
                print >>stderr, 'ERROR: %s:%s/%s is unmounted -- This will ' \
                    'cause replicas designated for that device to be ' \
                    'considered missing until resolved or the ring is ' \
                    'updated.' % (msg_or_exc.http_host, msg_or_exc.http_port,
                    msg_or_exc.http_device)
        if not hasattr(msg_or_exc, 'http_status') or \
                msg_or_exc.http_status not in (404, 507):
            print >>stderr, 'ERROR: %s: %s' % (prefix, msg_or_exc)
    return error_log