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mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua @ 5917:5db53d619e66
mod_csi_battery_saver: add xep number to mds comment
author | tmolitor <thilo@eightysoft.de> |
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date | Mon, 29 Apr 2024 01:31:40 +0200 |
parent | 5485:67190744b1eb |
rev | line source |
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1 local st = require "util.stanza"; |
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2 local json = require "util.json"; |
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3 local filters = { --[[ TODO what's useful? ]] }; |
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4 local render = require "util.interpolation".new("%b{}", tostring, filters); |
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5 local uuid_generate = require "util.uuid".generate; |
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6 |
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7 -- TODO alertmanager supports inclusion of HTTP auth and OAuth, worth looking |
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8 -- into for using instead of request IP |
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9 |
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10 module:depends("http"); |
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11 |
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12 local pubsub_service = module:depends("pubsub").service; |
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13 |
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14 local error_mapping = { |
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15 ["forbidden"] = 403; |
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16 ["item-not-found"] = 404; |
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17 ["internal-server-error"] = 500; |
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18 ["conflict"] = 409; |
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19 }; |
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20 |
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21 local function publish_payload(node, actor, item_id, payload) |
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22 local post_item = st.stanza("item", { xmlns = "http://jabber.org/protocol/pubsub", id = item_id, }) |
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23 :add_child(payload); |
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24 local ok, err = pubsub_service:publish(node, actor, item_id, post_item); |
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25 module:log("debug", ":publish(%q, true, %q, %s) -> %q", node, item_id, payload:top_tag(), err or ""); |
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26 if not ok then |
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27 return error_mapping[err] or 500; |
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28 end |
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29 return 202; |
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30 end |
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31 |
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32 local global_node_template = module:get_option_string("alertmanager_node_template", "{path?alerts}"); |
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33 local path_configs = module:get_option("alertmanager_path_configs", {}); |
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34 |
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35 function handle_POST(event, path) |
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36 local request = event.request; |
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37 |
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38 local config = path_configs[path] or {}; |
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39 local node_template = config.node_template or global_node_template; |
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40 local publisher = config.publisher or request.ip; |
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41 |
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42 local payload = json.decode(event.request.body); |
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43 if type(payload) ~= "table" then return 400; end |
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44 if payload.version ~= "4" then return 501; end |
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45 |
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46 for _, alert in ipairs(payload.alerts) do |
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47 local item = st.stanza("alerts", {xmlns = "urn:uuid:e3bec775-c607-4e9b-9a3f-94de1316d861:v4", status=alert.status}); |
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48 for k, v in pairs(alert.annotations) do |
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49 item:text_tag("annotation", v, { name=k }); |
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50 end |
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51 for k, v in pairs(alert.labels) do |
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52 item:text_tag("label", v, { name=k }); |
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53 end |
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54 item:tag("starts", { at = alert.startsAt}):up(); |
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55 if alert.endsAt and alert.status == "resolved" then |
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56 item:tag("ends", { at = alert.endsAt }):up(); |
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57 end |
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58 if alert.generatorURL then |
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59 item:tag("link", { href=alert.generatorURL }):up(); |
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60 end |
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61 |
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62 local node = render(node_template, {alert = alert, path = path, payload = payload, request = request}); |
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63 local ret = publish_payload(node, publisher, uuid_generate(), item); |
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64 if ret ~= 202 then |
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65 return ret |
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66 end |
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67 end |
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68 return 202; |
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69 end |
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70 |
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71 local template = module:get_option_string("alertmanager_body_template", [[ |
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72 *ALARM!* |
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73 Status: {status} |
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74 Starts at: {startsAt}{endsAt& |
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75 Ends at: {endsAt}} |
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76 Labels: {labels% |
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77 {idx}: {item}} |
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78 Annotations: {annotations% |
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79 {idx}: {item}} |
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80 ]]); |
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81 |
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82 module:hook("pubsub-summary/urn:uuid:e3bec775-c607-4e9b-9a3f-94de1316d861:v4", function(event) |
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83 local payload = event.payload; |
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84 |
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85 local data = { |
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86 status = payload.attr.status, |
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87 firing = "firing" == payload.attr.status, |
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88 resolved = "resolved" == payload.attr.status, |
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89 annotations = {}, |
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90 labels = {}, |
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91 endsAt = payload:find("ends/@at"), |
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92 startsAt = payload:find("starts/@at"), |
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93 }; |
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94 for label in payload:childtags("label") do |
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95 data.labels[tostring(label.attr.name)] = label:get_text(); |
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96 end |
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97 for annotation in payload:childtags("annotation") do |
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98 data.annotations[tostring(annotation.attr.name)] = annotation:get_text(); |
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99 end |
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100 |
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101 return render(template, data); |
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102 end); |
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103 |
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104 module:provides("http", { |
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105 route = { |
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106 ["POST /*"] = handle_POST; |
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107 ["POST"] = handle_POST; |
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108 }; |
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109 }); |