Annotate

mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua @ 5519:83ebfc367169

mod_http_oauth2: Return Authentication Time per OpenID Core Section 2 Mandatory To Implement, either MUST include or OPTIONAL depending on things we don't look at, so might as well include it all the time. Since we do not persist authentication state with cookies or such, the authentication time will always be some point between the user being sent to the authorization endpoint and the time they are sent back to the client application.
author Kim Alvefur <zash@zash.se>
date Mon, 05 Jun 2023 22:32:44 +0200
parent 5485:67190744b1eb
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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 });