Mercurial > prosody-modules
annotate mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua @ 4976:75b6e5df65f9
various: Improve error reporting if missing file server module on 0.12
If there is some error loading net.http.files then it would be swallowed
by the pcall and then it would proceed to trying mod_http_files, which
might cause unexpected behavior on 0.12
Ref #1765
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 18 Jul 2022 22:47:54 +0200 |
parents | adda872fa9e1 |
children | 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 node_template = module:get_option_string("alertmanager_node_template", "{path?alerts}"); |
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33 |
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34 function handle_POST(event, path) |
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35 local request = event.request; |
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36 |
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37 local payload = json.decode(event.request.body); |
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38 if type(payload) ~= "table" then return 400; end |
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39 if payload.version ~= "4" then return 501; end |
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40 |
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41 for _, alert in ipairs(payload.alerts) do |
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42 local item = st.stanza("alerts", {xmlns = "urn:uuid:e3bec775-c607-4e9b-9a3f-94de1316d861:v4", status=alert.status}); |
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43 for k, v in pairs(alert.annotations) do |
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44 item:text_tag("annotation", v, { name=k }); |
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45 end |
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46 for k, v in pairs(alert.labels) do |
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47 item:text_tag("label", v, { name=k }); |
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48 end |
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49 item:tag("starts", { at = alert.startsAt}):up(); |
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50 if alert.endsAt and alert.status == "resolved" then |
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51 item:tag("ends", { at = alert.endsAt }):up(); |
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52 end |
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53 if alert.generatorURL then |
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54 item:tag("link", { href=alert.generatorURL }):up(); |
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55 end |
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56 |
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57 local node = render(node_template, {alert = alert, path = path, payload = payload, request = request}); |
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58 local ret = publish_payload(node, request.ip, uuid_generate(), item); |
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59 if ret ~= 202 then |
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60 return ret |
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61 end |
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62 end |
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63 return 202; |
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64 end |
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65 |
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66 local template = module:get_option_string("alertmanager_body_template", [[ |
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67 *ALARM!* |
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68 Status: {status} |
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69 Starts at: {startsAt}{endsAt& |
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70 Ends at: {endsAt}} |
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71 Labels: {labels% |
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72 {idx}: {item}} |
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73 Annotations: {annotations% |
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74 {idx}: {item}} |
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75 ]]); |
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76 |
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77 module:hook("pubsub-summary/urn:uuid:e3bec775-c607-4e9b-9a3f-94de1316d861:v4", function(event) |
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78 local payload = event.payload; |
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79 |
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80 local data = { |
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81 status = payload.attr.status, |
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82 firing = "firing" == payload.attr.status, |
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83 resolved = "resolved" == payload.attr.status, |
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84 annotations = {}, |
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85 labels = {}, |
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86 endsAt = payload:find("ends/@at"), |
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87 startsAt = payload:find("starts/@at"), |
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88 }; |
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89 for label in payload:childtags("label") do |
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90 data.labels[tostring(label.attr.name)] = label:get_text(); |
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91 end |
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92 for annotation in payload:childtags("annotation") do |
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93 data.annotations[tostring(annotation.attr.name)] = annotation:get_text(); |
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94 end |
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95 |
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96 return render(template, data); |
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97 end); |
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98 |
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99 module:provides("http", { |
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100 route = { |
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101 ["POST /*"] = handle_POST; |
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102 ["POST"] = handle_POST; |
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103 }; |
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104 }); |