prosody-modules
d3b69859553a
mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua

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mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua @ 5841:d3b69859553a

mod_password_policy: Change error type from 'cancel' to 'modify' This makes more sense, as the problem relates to the data that has been entered, and therefore the request could be retried with different data.
author Matthew Wild <mwild1@gmail.com>
date Mon, 08 Jan 2024 17:28:39 +0000
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
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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 });