prosody-modules
385346b6c81d
mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua

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mod_pubsub_alertmanager/mod_pubsub_alertmanager.lua @ 5294:385346b6c81d

mod_client_management: New module for users to view/manage permitted clients This is just the data and API part.
author Matthew Wild <mwild1@gmail.com>
date Thu, 30 Mar 2023 11:32:50 +0100
parent 4627:adda872fa9e1
child 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 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 });