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mod_http_host_status_check/mod_http_host_status_check.lua @ 6302:06fbbd45ba75
mod_cloud_notify: Readme: fix links and labels that were removed in the last commit
diff --git a/mod_cloud_notify/README.md b/mod_cloud_notify/README.md
--- a/mod_cloud_notify/README.md
+++ b/mod_cloud_notify/README.md
@@ -1,3 +1,9 @@
+----
+-labels:
+-- 'Stage-Beta'
+-summary: 'XEP-0357: Cloud push notifications'
+----
+
# Introduction
This module enables support for sending "push notifications" to clients
@@ -32,15 +38,15 @@ notification to your device. When your d
it will display it or wake up the app so it can connect to XMPP and
receive any pending messages.
-This protocol is described for developers in \[XEP-0357: Push
-Notifications\].
+This protocol is described for developers in [XEP-0357: Push
+Notifications].
-For this module to work reliably, you must have \[mod_smacks\],
-\[mod_mam\] and \[mod_carbons\] also enabled on your server.
+For this module to work reliably, you must have [mod_smacks],
+[mod_mam] and [mod_carbons] also enabled on your server.
Some clients, notably Siskin and Snikket iOS need some additional
extensions that are not currently defined in a standard XEP. To support
-these clients, see \[mod_cloud_notify_extensions\].
+these clients, see [mod_cloud_notify_extensions].
# Configuration
@@ -58,18 +64,18 @@ these clients, see \[mod_cloud_notify_ex
# Internal design notes
App servers are notified about offline messages, messages stored by
-\[mod_mam\] or messages waiting in the smacks queue. The business rules
+[mod_mam] or messages waiting in the smacks queue. The business rules
outlined
[here](//mail.jabber.org/pipermail/standards/2016-February/030925.html)
are all honored[^2].
-To cooperate with \[mod_smacks\] this module consumes some events:
+To cooperate with [mod_smacks] this module consumes some events:
`smacks-ack-delayed`, `smacks-hibernation-start` and
`smacks-hibernation-end`. These events allow this module to send out
notifications for messages received while the session is hibernated by
-\[mod_smacks\] or even when smacks acknowledgements for messages are
+[mod_smacks] or even when smacks acknowledgements for messages are
delayed by a certain amount of seconds configurable with the
-\[mod_smacks\] setting `smacks_max_ack_delay`.
+[mod_smacks] setting `smacks_max_ack_delay`.
The `smacks_max_ack_delay` setting allows to send out notifications to
clients which aren't already in smacks hibernation state (because the
| author | Menel <menel@snikket.de> |
|---|---|
| date | Fri, 13 Jun 2025 10:44:37 +0200 |
| parent | 2765:85cf9a8b4020 |
| rev | line source |
|---|---|
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1 local heartbeats = module:shared("/*/host_status_check/heartbeats"); |
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2 local events = module:shared("/*/host_status_check/connection_events"); |
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3 local host_status_ok = module:shared("host_status_ok"); |
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4 |
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5 local time = require "socket".gettime; |
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6 local template = require "util.interpolation".new("%b{}", function (s) return s end) |
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7 |
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8 module:depends "http" |
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9 |
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10 local threshold = module:get_option_number("status_check_heartbeat_threshold", 10); |
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11 |
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12 local function status_string(status, duration, comment) |
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13 local string_timestamp; |
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14 if duration then |
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15 string_timestamp = ("(%0.2fs%s)"):format(duration, comment or ""); |
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16 elseif comment then |
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17 string_timestamp = ("(%s)"):format(comment); |
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18 else |
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19 return status and "UP" or "DOWN"; |
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20 end |
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21 return (status and "UP " or "DOWN ")..string_timestamp; |
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22 end |
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23 |
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24 local function string_pad(s, len) |
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25 return s..(" "):rep(len-#s); |
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26 end |
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27 |
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28 local status_page_template = [[ |
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29 STATUS {status} |
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30 {host_statuses%HOST {item} {idx} |
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31 }]]; |
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32 |
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33 function status_page() |
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34 local host_statuses = {}; |
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35 local current_time = time(); |
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36 |
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37 local all_ok = true; |
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38 local failed_hosts = {}; |
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39 |
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40 for host in pairs(hosts) do |
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41 local last_heartbeat_time = heartbeats[host]; |
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42 |
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43 local ok, status_text = true; |
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44 |
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45 local is_component = hosts[host].type == "component" and hosts[host].modules.component; |
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46 |
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47 if is_component then |
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48 local current_status = hosts[host].modules.component.connected; |
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49 if events[host] then |
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50 local tracked_status = events[host].connected; |
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51 if tracked_status == current_status then |
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52 status_text = status_string(current_status, time() - events[host].timestamp); |
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53 else |
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54 status_text = status_string(current_status, nil, "!"); |
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55 end |
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56 else |
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57 status_text = status_string(current_status, nil, "?"); |
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58 end |
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59 if not current_status then |
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60 ok = false; |
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61 end |
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62 else |
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63 local event_info = events[host]; |
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64 local connected = true; |
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65 if event_info then |
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66 connected = event_info.connected; |
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67 end |
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68 status_text = status_string(connected, event_info and (time() - events[host].timestamp), not event_info and "?"); |
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69 end |
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70 |
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71 if last_heartbeat_time then |
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72 local time_since_heartbeat = current_time - last_heartbeat_time; |
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73 if ok then |
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74 if time_since_heartbeat > threshold then |
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75 status_text = ("TIMEOUT (%0.2fs)"):format(time_since_heartbeat); |
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76 ok = false; |
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77 else |
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78 status_text = status_text:gsub("^%S+", "GOOD"); |
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79 end |
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80 end |
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81 end |
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82 |
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83 if not ok then |
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84 all_ok = false; |
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85 table.insert(failed_hosts, host); |
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86 end |
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87 |
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88 if not ok or is_component or last_heartbeat_time then |
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89 host_statuses[host] = string_pad(status_text, 20); |
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90 end |
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91 local last_ok = host_status_ok[host]; |
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92 if last_ok ~= ok then |
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93 if last_ok ~= nil then |
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94 module:log("warn", "Host status check %s (%s)", ok and "OK" or "FAILED", status_text); |
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95 end |
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96 host_status_ok[host] = ok; |
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97 end |
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98 end |
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99 local page = template(status_page_template, { |
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100 status = all_ok and "OK" or ("FAIL: "..table.concat(failed_hosts, ", ")); |
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101 host_statuses = host_statuses; |
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102 }); |
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103 return page; |
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104 end |
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105 |
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106 module:provides("http", { |
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107 route = { |
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108 GET = status_page; |
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109 }; |
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110 }) |