annotate mod_pubsub_subscription/README.md @ 6258:06fbbd45ba75

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
parents fe081789f7b5
children
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1 # Introduction
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2
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3 This module lets you programmatically subscribe to updates from a
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4 [pubsub][xep0060] node, even if the pubsub service is remote.
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5
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6 ## Example
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8 ``` {.lua}
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9 module:depends("pubsub_subscription");
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10 module:add_item("pubsub-subscription", {
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11 service = "pubsub.example.com";
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12 node = "otter_facts";
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13
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14 -- Callbacks:
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15 on_subscribed = function()
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16 module:log("info", "Otter facts incoming!");
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17 end;
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18
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19 on_item = function(event)
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20 module:log("info", "Random Otter Fact: %s", event.payload:get_text());
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21 end;
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22 });
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23 ```
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24
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25 ## Usage
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27 Ensure the module is loaded and add your subscription via the
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28 `:add_item` API. The item table MUST have `service` and `node` fields
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29 and SHOULD have one or more `on_<event>` callbacks.
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30
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31 The JID of the pubsub service is given in `service` (could also be the
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32 JID of an user for advanced PEP usage) and the node is given in,
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33 unsurprisingly, the `node` field.
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34
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35 The various `on_event` callback functions, if present, gets called when
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36 new events are received. The most interesting would be `on_item`, which
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37 receives incoming items. Available events are:
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38
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39 `on_subscribed`
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40 : The subscription was successful, events may follow.
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41
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42 `on_unsubscribed`
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43 : Subscription was removed successfully, this happens if the
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44 subscription is removed, which you would normally never do.
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45
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46 `on_error`
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47 : If there was an error subscribing to the pubsub service. Receives a
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48 table with `type`, `condition`, `text`, and `extra` fields as
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49 argument.
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50
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51 `on_item`
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52 : An item publication, the payload itself available in the `payload`
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53 field in the table provided as argument. The ID of the item can be
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54 found in `item.attr.id`.
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55
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56 `on_retract`
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57 : When an item gets retracted (removed by the publisher). The ID of
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58 the item can be found in `item.attr.id` of the table argument..
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59
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60 `on_purge`
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61 : All the items were removed by the publisher.
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62
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63 `on_delete`
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64 : The entire pubsub node was removed from the pubsub service. No
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65 subscription exists after this.
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67 ``` {.lua}
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68 event_payload = {
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69 -- Common prosody event entries:
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70 stanza = util.stanza;
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71 origin = util.session;
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72
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73 -- PubSub service details
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74 service = "pubsub.example.com";
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75 node = "otter_facts";
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76
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77 -- The pubsub event itself
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78 item = util.stanza; -- <item/>
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79 payload = util.stanza; -- actual payload, child of <item/>
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80 }
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81 ```
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82
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83 # Compatibility
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84
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85 Should work with Prosody \>= 0.11.x