log_format default_json '{ "timestamp": "$time_iso8601", '
                         '"clientip": "$remote_addr", '
                         '"status": "$status", '
                         '"scheme": "$scheme", '
                         '"method": "$request_method", '
                         '"server_port": "$server_port", '
                         '"server_protocol": "$server_protocol", '
                         '"upgrade": "$http_upgrade", '
                         '"request": "$request_uri", '
                         '"request_time": "$request_time", '
                         '"request_id": "$new_request_id", '
                         '"upstream": "$upstream_addr", '
                         '"upstream_status": "$upstream_status", '
                         '"upstream_response_time": "$upstream_response_time", '
                         '"host": "$host", '
                         '"user_agent": "$http_user_agent",'
                         '"cache": "$upstream_cache_status", '
                         '"gzip_ratio": "$gzip_ratio", '
                         '"size": "$bytes_sent", '
                         '"http_referer": "$http_referer" ,'
                         '"remote_user": "$remote_user" , '
                         '"ssl_cipher": "$ssl_cipher" , '
                         '"ssl_protocol": "$ssl_protocol" } ';