annotate mod_http_logging/mod_http_logging.lua @ 3963:acd231e2b46f default tip

mod_http_upload/README: User/host arguments to command not optional (thanks kaliko)
author Kim Alvefur <zash@zash.se>
date Mon, 30 Mar 2020 19:56:43 +0200
parents c89be016a075
children
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1 -- mod_http_logging
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2 --
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3 -- Copyright (C) 2015 Kim Alvefur
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8 -- Produces HTTP logs in the style of Apache
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9 --
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10 -- TODO
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11 -- * Configurable format?
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12
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13 module:set_global();
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14
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15 local server = require "net.http.server";
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16
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17 local function get_content_len(response, body)
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18 local len = response.headers.content_length;
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19 if len then return len; end
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20 if not body then body = response.body; end
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21 if body then return #tostring(body); end
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22 end
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23
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24 local function log_response(response, body)
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25 local len = tostring(get_content_len(response, body) or "-");
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26 local request = response.request;
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27 local ip = request.ip;
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28 if not ip and request.conn then
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29 ip = request.conn:ip();
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30 end
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31 local req = string.format("%s %s HTTP/%s", request.method, request.path, request.httpversion);
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32 local date = os.date("%d/%m/%Y:%H:%M:%S %z");
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33 module:log("info", "%s - - [%s] \"%s\" %d %s", ip, date, req, response.status_code, len);
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34 end
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35
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36 local send_response = server.send_response;
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37 local function log_and_send_response(response, body)
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38 if not response.finished then
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39 log_response(response, body);
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40 end
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41 return send_response(response, body);
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42 end
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43
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44 local send_file = server.send_file;
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45 local function log_and_send_file(response, f)
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46 if not response.finished then
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47 log_response(response);
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48 end
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49 return send_file(response, f);
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50 end
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51
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52 if module.wrap_object_event then
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53 -- Use object event wrapping, allows clean unloading of the module
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54 module:wrap_object_event(server._events, false, function (handlers, event_name, event_data)
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55 if event_data.response then
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56 event_data.response.send = log_and_send_response;
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57 event_data.response.send_file = log_and_send_file;
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58 end
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59 return handlers(event_name, event_data);
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60 end);
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61 else
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62 -- Fall back to monkeypatching, unlikely to behave nicely in the
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63 -- presence of other modules also doing this
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64 server.send_response = log_and_send_response;
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65 server.send_file = log_and_send_file;
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66 function module.unload()
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67 server.send_response = send_response;
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68 server.send_file = send_file;
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69 end
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70 end