annotate mod_pubsub_twitter/mod_pubsub_twitter.lua @ 4049:78f1de5301fc

mod_adhoc_dataforms_demo: Fix duplicate field prevention It's supposed to only include each type of form field once per form at most but it didn't note which fields it had added already. No idea what the probability was anyways, probably pretty low.
author Kim Alvefur <zash@zash.se>
date Tue, 23 Jun 2020 19:40:55 +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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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
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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118 for search_name in new_searches do
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
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119 module:log("debug", "Created new Twitter search '%s'", search_name);
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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120 local query = twitter_searches[search_name];
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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121 active_searches[search_name] = {
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
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122 url = api_url.."?q="..http.urlencode(query);
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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123 };
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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124 end
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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125 end
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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126
dbcbcec37d24 mod_pubsub_twitter: Plugin to subscribe (poll) to Twitter search queries, and announce matching tweets over pubsub
Matthew Wild <mwild1@gmail.com>
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127 module:add_timer(5, update_all);