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mod_log_http/mod_log_http.lua @ 5491:7842502c1157

mod_http_debug: Log some extended info about requests If you point something external at this module, you don't get the response body back, hence it can be useful to see some details in the log as well.
author Kim Alvefur <zash@zash.se>
date Fri, 26 May 2023 15:37:15 +0200
parent 4977:3bd725430f40
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1 module:set_global();
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2
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3 local http = require "net.http";
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4 local codes = require "net.http.codes";
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5 local json = require "util.json";
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6
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7 local log = assert(io.open(assert(module:get_option_string("log_http_file"), "Please supply log_http_file in the config"), "a+"));
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8 log:setvbuf("line");
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9
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10 local function append_request(id, req)
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11 local headers = {};
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12 for k, v in pairs(req.headers) do
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13 table.insert(headers, { name = k, value = v });
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14 end
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15 local queryString = {};
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16 if req.query then
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17 for _, pair in ipairs(http.formdecode(req.query)) do
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18 table.insert(queryString, pair);
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19 end
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20 end
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21 log:write("<<<", json.encode({
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22 id = id;
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23 type = "request";
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24 method = req.method;
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25 url = req.url;
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26 httpVersion = "HTTP/1.1";
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27 cookies = {};
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28 headers = headers;
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29 queryString = queryString;
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30 postData = req.body and {
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31 mimeType = req.headers["Content-Type"];
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32 text = req.body;
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33 } or nil;
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34 headersSize = -1;
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35 bodySize = -1;
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36 }), "\n");
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37 end
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38
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39 local function append_response(id, resp)
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40 local headers = {};
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41 for k, v in pairs(resp.headers) do
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42 table.insert(headers, { name = k, value = v });
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43 end
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44 log:write(">>>", json.encode({
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45 id = id;
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46 type = "response";
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47 status = resp.code;
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48 statusText = codes[resp.code];
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49 httpVersion = resp.httpversion;
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50 cookies = {};
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51 headers = headers;
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52 content = resp.body and {
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53 size = #resp.body;
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54 mimeType = resp.headers.content_type;
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55 text = resp.body;
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56 } or nil;
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57 headersSize = -1;
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58 bodySize = -1;
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59 }), "\n");
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60 end
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61
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62 module:hook_object_event(http.events, "request", function (event)
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63 module:log("warn", "Request to %s!", event.url);
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64 append_request(event.request.id, event.request);
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65 end);
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66
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67 module:hook_object_event(http.events, "request-connection-error", function (event)
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68 module:log("warn", "Failed to make request to %s!", event.url);
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69 end);
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70
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71 module:hook_object_event(http.events, "response", function (event)
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72 module:log("warn", "Received response %d from %s!", event.code, event.url);
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73 append_response(event.request.id, event.response);
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74 end);
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75
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76 function module.unload()
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77 log:close();
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78 end