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mod_http_logging/mod_http_logging.lua @ 4776:13e913471b75
mod_http_admin_api: Ensure freshness of metrics when in manual mode
When in manual collection mode, as recommended for Prometheus,
collection needs to be triggered manually, or they would be stale,
possibly dating from the start of the server. This might vary per metric
depending on how and when the metrics are gathered.
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 18 Nov 2021 19:26:07 +0100 |
parent | 2971:c89be016a075 |
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-- mod_http_logging -- -- Copyright (C) 2015 Kim Alvefur -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- -- Produces HTTP logs in the style of Apache -- -- TODO -- * Configurable format? module:set_global(); local server = require "net.http.server"; local function get_content_len(response, body) local len = response.headers.content_length; if len then return len; end if not body then body = response.body; end if body then return #tostring(body); end end local function log_response(response, body) local len = tostring(get_content_len(response, body) or "-"); local request = response.request; local ip = request.ip; if not ip and request.conn then ip = request.conn:ip(); end local req = string.format("%s %s HTTP/%s", request.method, request.path, request.httpversion); local date = os.date("%d/%m/%Y:%H:%M:%S %z"); module:log("info", "%s - - [%s] \"%s\" %d %s", ip, date, req, response.status_code, len); end local send_response = server.send_response; local function log_and_send_response(response, body) if not response.finished then log_response(response, body); end return send_response(response, body); end local send_file = server.send_file; local function log_and_send_file(response, f) if not response.finished then log_response(response); end return send_file(response, f); end if module.wrap_object_event then -- Use object event wrapping, allows clean unloading of the module module:wrap_object_event(server._events, false, function (handlers, event_name, event_data) if event_data.response then event_data.response.send = log_and_send_response; event_data.response.send_file = log_and_send_file; end return handlers(event_name, event_data); end); else -- Fall back to monkeypatching, unlikely to behave nicely in the -- presence of other modules also doing this server.send_response = log_and_send_response; server.send_file = log_and_send_file; function module.unload() server.send_response = send_response; server.send_file = send_file; end end