Mercurial > prosody-modules

annotate mod_pubsub_twitter/mod_pubsub_twitter.lua @ 5356:959dc350f2ad

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mod_http_oauth2: Declare https as required of URIs in schema If util.jsonschema happens to gain support for 'pattern' (regular expression validation) then this would be picked up. Until then, declarative annotations are nice.
author Kim Alvefur <zash@zash.se>
date Sat, 22 Apr 2023 14:06:41 +0200
parents 7dbde05b48a9
children
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1 -- Publishes Twitter search results over pubsub
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2 --
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3 -- Config:
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4 -- Component "pubsub.example.com" "pubsub"
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5 -- modules_enabled = {
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6 -- "pubsub_twitter";
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7 -- }
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8 -- twitter_searches = { -- node -> query
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9 -- prosody = "prosody xmpp";
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10 -- }
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11 -- twitter_pull_interval = 20 -- minutes
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12 --
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13
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14 local pubsub = module:depends"pubsub";
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15
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16 local json = require "util.json";
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17 local http = require "net.http";
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18 local set = require "util.set";
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19 local it = require "util.iterators";
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20 local array = require "util.array";
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21
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22 local st = require "util.stanza";
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23 --local dump = require"util.serialization".serialize;
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24
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25 local xmlns_atom = "http://www.w3.org/2005/Atom";
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27 local twitter_searches = module:get_option("twitter_searches", {});
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28 local refresh_interval = module:get_option_number("twitter_pull_interval", 20) * 60;
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29 local api_url = module:get_option_string("twitter_search_url", "http://search.twitter.com/search.json");
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30
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31 local month_number = {
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32 Jan = "01", Feb = "02", Mar = "03";
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33 Apr = "04", May = "05", Jun = "06";
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34 Jul = "07", Aug = "08", Sep = "09";
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35 Oct = "10", Nov = "11", Dec = "12";
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36 };
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37
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38 local active_searches = {};
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39
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40 local function publish_result(search_name, result)
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41 local node, id = search_name, result.id_str;
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42 --"Tue, 02 Apr 2013 15:40:54 +0000"
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43 local timestamp_date, timestamp_month, timestamp_year, timestamp_time =
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44 result.created_at:match(" (%d+) (%a+) (%d+) (%d%d:%d%d:%d%d)");
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46 local timestamp = ("%s-%s-%sT%sZ"):format(timestamp_year, month_number[timestamp_month], timestamp_date, timestamp_time);
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47
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48 local item = st.stanza("item", { xmlns = "http://jabber.org/protocol/pubsub", id = id })
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49 :tag("entry", { xmlns = xmlns_atom })
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50 :tag("id"):text(id):up()
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51 :tag("author")
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52 :tag("name"):text(result.from_user_name.." (@"..result.from_user..")"):up()
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53 :tag("uri"):text("http://twitter.com/"..result.from_user):up()
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54 :up()
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55 :tag("published"):text(timestamp):up()
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56 :tag("title"):text(result.text):up()
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57 :tag("link", { rel = "alternate" , href = "https://twitter.com/"..result.from_user.."/status/"..id}):up();
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58
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59 module:log("debug", "Publishing Twitter result: %s", tostring(item));
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60
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61 local ok, err = pubsub.service:publish(node, true, id, item);
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62 if not ok then
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63 if err == "item-not-found" then -- try again
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64 local ok, err = pubsub.service:create(node, true);
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65 if not ok then
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66 module:log("error", "could not create node %s: %s", node, err);
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67 return;
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68 end
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69 local ok, err = pubsub.service:publish(node, true, id, item);
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70 if not ok then
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71 module:log("error", "could not create or publish node %s: %s", node, err);
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72 return
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73 end
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74 else
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75 module:log("error", "publishing %s failed: %s", node, err);
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76 end
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77 end
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78 end
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79
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80 local function is_retweet(tweet)
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81 return not not tweet.text:match("^RT ");
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82 end
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83
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84 function update_all()
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85 module:log("debug", "Updating all searches");
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86 for name, search in pairs(active_searches) do
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87 module:log("debug", "Fetching new results for '%s'", name);
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88 http.request(search.refresh_url or search.url, nil, function (result_json, code)
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89 if code ~= 200 then
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90 module:log("warn", "Twitter search query '%s' failed with code %d", name, code);
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91 return;
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92 end
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93 local response = json.decode(result_json);
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94 module:log("debug", "Processing %d results for %s", #response.results, name);
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95 search.refresh_url = api_url..response.refresh_url;
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96 for _, result in ipairs(response.results) do
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97 if not is_retweet(result) then
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98 publish_result(name, result);
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99 end
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100 end
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101 end);
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102 end
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103 return refresh_interval;
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104 end
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105
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106 function module.load()
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107 local config_searches = set.new(array.collect(it.keys(twitter_searches)));
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108 local current_searches = set.new(array.collect(it.keys(active_searches)));
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109
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110 local disable_searches = current_searches - config_searches;
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111 local new_searches = config_searches - current_searches;
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112
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113 for search_name in disable_searches do
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114 module:log("debug", "Disabled old Twitter search '%s'", search_name);
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115 active_searches[search_name] = nil;
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116 end
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117
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118 for search_name in new_searches do
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119 module:log("debug", "Created new Twitter search '%s'", search_name);
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120 local query = twitter_searches[search_name];
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121 active_searches[search_name] = {
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122 url = api_url.."?q="..http.urlencode(query);
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123 };
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124 end
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125 end
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126
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127 module:add_timer(5, update_all);