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annotate mod_pubsub_pivotaltracker/mod_pubsub_pivotaltracker.lua @ 1309:d3579ea5ff33

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mod_pubsub_mqtt: Avoid tracebacks about concatenating nil field
author Vadim Misbakh-Soloviov <mva@mva.name>
date Wed, 19 Feb 2014 17:57:32 +0700
parents 9922e8cdf4a4
children 7dbde05b48a9
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9922e8cdf4a4 mod_pubsub_pivotaltracker: Accept activity notifications from Pivotal Tracker web hooks and relay them to a pubsub node
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1 module:depends("http");
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2
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3 local lom = require "lxp.lom";
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4 local st = require "util.stanza";
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5 local json = require "util.json";
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6 local datetime = require "util.datetime".datetime;
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7
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9 local pubsub_service = module:depends("pubsub").service;
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10 local node = module:get_option("pivotaltracker_node", "tracker");
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12 local stanza_mt = require "util.stanza".stanza_mt;
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13 local function stanza_from_lom(lom)
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14 if lom.tag then
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15 local child_tags, attr = {}, {};
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16 local stanza = setmetatable({ name = lom.tag, attr = attr, tags = child_tags }, stanza_mt);
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17 for i, attr_name in ipairs(lom.attr) do
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18 attr[attr_name] = lom.attr[attr_name]
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19 end
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20 for i, child in ipairs(lom) do
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21 if child.tag then
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22 child = stanza_from_lom(child);
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23 child_tags[#child_tags+1] = child;
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24 end
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25 stanza[i] = child;
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26 end
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27 return stanza;
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28 else
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29 return lom;
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30 end
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31 end
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33 function handle_POST(event)
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34 local data = lom.parse(event.request.body);
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35
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36 if not data then
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37 return "Invalid XML. From you of all people...";
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38 end
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39
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40 data = stanza_from_lom(data);
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41
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42 if data.name ~= "activity" then
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43 return "Unrecognised XML element: "..data.name;
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44 end
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45
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46 local activity_id = data:get_child("id"):get_text();
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47 local description = data:get_child("description"):get_text();
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48 local author_name = data:get_child("author"):get_text();
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49 local story = data:get_child("stories"):get_child("story");
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50 local story_link = story:get_child("url"):get_text();
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51
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52 local ok, err = pubsub_service:publish(node, true, "activity", st.stanza("item", { id = "activity", xmlns = "http://jabber.org/protocol/pubsub" })
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53 :tag("entry", { xmlns = "http://www.w3.org/2005/Atom" })
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54 :tag("id"):text(activity_id):up()
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55 :tag("title"):text(description):up()
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56 :tag("link", { rel = "alternate", href = story_link }):up()
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57 :tag("published"):text(datetime()):up()
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58 :tag("author")
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59 :tag("name"):text(author_name):up()
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60 :up()
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61 );
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62
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63 module:log("debug", "Handled POST: \n%s\n", tostring(event.request.body));
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64 return "Thank you Pivotal!";
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65 end
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66
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67 module:provides("http", {
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68 route = {
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69 POST = handle_POST;
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70 };
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71 });
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72
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73 function module.load()
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74 if not pubsub_service.nodes[node] then
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75 local ok, err = pubsub_service:create(node, true);
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76 if not ok then
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77 module:log("error", "Error creating node: %s", err);
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78 else
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79 module:log("debug", "Node %q created", node);
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80 end
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81 end
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82 end