prosody-modules
b117b63bcdbb
mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua

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mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua @ 5747:b117b63bcdbb

mod_invites_page: Also remove jQuery usage in client page
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 16 Nov 2023 19:18:05 +0100
parent 5485:67190744b1eb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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43c54a27bab2 mod_pubsub_post: Module to publish to pubsub nodes from a simple HTTP POST
Matthew Wild <mwild1@gmail.com>
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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 });