Mercurial > prosody-modules

annotate mod_pubsub_serverinfo/mod_pubsub_serverinfo.lua @ 5885:54b451c3790c

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mod_pubsub_serverinfo: Fix for compatibility with 0.12 option getters
author Matthew Wild <mwild1@gmail.com>
date Tue, 16 Apr 2024 12:58:08 +0100
parents 49b0873932ca
children 2c85397d7241
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1 local http = require "net.http";
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2 local json = require "util.json";
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3 local st = require "util.stanza";
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4 local new_id = require"util.id".medium;
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5
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6 local local_domain = module:get_host();
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7 local service = module:get_option_string(module.name .. "_service");
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8 local node = module:get_option_number(module.name .. "_node", "serverinfo");
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9 local actor = module.host .. "/modules/" .. module.name;
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10 local publication_interval = module:get_option_number(module.name .. "_publication_interval", 300);
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11 local cache_ttl = module:get_option_number(module.name .. "_cache_ttl", 3600);
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12 local public_providers_url = module:get_option_string(module.name.."_public_providers_url", "https://data.xmpp.net/providers/v2/providers-Ds.json");
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13 local delete_node_on_unload = module:get_option_boolean(module.name.."_delete_node_on_unload", false);
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14 local persist_items = module:get_option_boolean(module.name.."_persist_items", true);
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15
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16 if not service and prosody.hosts["pubsub."..module.host] then
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17 service = "pubsub."..module.host;
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18 else
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19 module:log_status("warn", "No pubsub service specified - module not activated");
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20 return;
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21 end
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22
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23 local xmlns_pubsub = "http://jabber.org/protocol/pubsub";
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24
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25 function module.load()
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26 discover_node():next(
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27 function(exists)
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28 if not exists then create_node() end
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29 end
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30 ):catch(
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31 function(error)
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32 module:log("warn", "Error prevented discovery or creation of pub/sub node at %s: %s", service, error)
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33 end
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34 )
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35
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36 module:add_feature("urn:xmpp:serverinfo:0");
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37
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38 module:add_item("server-info-fields", {
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39 { name = "serverinfo-pubsub-node", type = "text-single", value = ("xmpp:%s?;node=%s"):format(service, node) };
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40 });
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41
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42 if cache_ttl < publication_interval then
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43 module:log("warn", "It is recommended to have a cache interval higher than the publication interval");
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44 end
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45
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46 cache_warm_up()
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47 module:add_timer(10, publish_serverinfo);
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48 end
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49
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50 function module.unload()
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51 -- This removes all subscribers, which may or may not be desirable, depending on the reason for the unload.
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52 if delete_node_on_unload then
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53 delete_node();
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54 end
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55 end
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56
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57 -- Returns a promise of a boolean
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58 function discover_node()
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59 local request = st.iq({ type = "get", to = service, from = actor, id = new_id() })
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60 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items" })
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61
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62 module:log("debug", "Sending request to discover existence of pub/sub node '%s' at %s", node, service)
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63 return module:send_iq(request):next(
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64 function(response)
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65 if response.stanza == nil or response.stanza.attr.type ~= "result" then
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66 module:log("warn", "Unexpected response to service discovery items request at %s: %s", service, response.stanza)
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67 return false
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68 end
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69
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70 local query = response.stanza:get_child("query", "http://jabber.org/protocol/disco#items")
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71 if query ~= nil then
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72 for item in query:childtags("item") do
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73 if item.attr.jid == service and item.attr.node == node then
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74 module:log("debug", "pub/sub node '%s' at %s does exist.", node, service)
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75 return true
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76 end
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77 end
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78 end
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79 module:log("debug", "pub/sub node '%s' at %s does not exist.", node, service)
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80 return false;
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81 end
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82 );
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83 end
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84
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85 -- Returns a promise of a boolean
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86 function create_node()
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87 local request = st.iq({ type = "set", to = service, from = actor, id = new_id() })
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88 :tag("pubsub", { xmlns = xmlns_pubsub })
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89 :tag("create", { node = node, xmlns = xmlns_pubsub }):up()
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90 :tag("configure", { xmlns = xmlns_pubsub })
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91 :tag("x", { xmlns = "jabber:x:data", type = "submit" })
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92 :tag("field", { var = "FORM_TYPE", type = "hidden"})
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93 :text_tag("value", "http://jabber.org/protocol/pubsub#node_config")
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94 :up()
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95 :tag("field", { var = "pubsub#max_items" })
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96 :text_tag("value", "1")
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97 :up()
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98 :tag("field", { var = "pubsub#persist_items" })
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99 :text_tag("value", persist_items and "1" or "0")
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100
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101 module:log("debug", "Sending request to create pub/sub node '%s' at %s", node, service)
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102 return module:send_iq(request):next(
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103 function(response)
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104 if response.stanza == nil or response.stanza.attr.type ~= "result" then
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105 module:log("warn", "Unexpected response to pub/sub node '%s' creation request at %s: %s", node, service, response.stanza)
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106 return false
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107 else
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108 module:log("debug", "Successfully created pub/sub node '%s' at %s", node, service)
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109 return true
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110 end
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111 end
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112 )
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113 end
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114
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115 -- Returns a promise of a boolean
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116 function delete_node()
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117 local request = st.iq({ type = "set", to = service, from = actor, id = new_id() })
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118 :tag("pubsub", { xmlns = xmlns_pubsub })
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Matthew Wild <mwild1@gmail.com>
parents: 5814
diff changeset
119 :tag("delete", { node = node, xmlns = xmlns_pubsub });
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
120
5804
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
121 module:log("debug", "Sending request to delete pub/sub node '%s' at %s", node, service)
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parents: 5803
diff changeset
122 return module:send_iq(request):next(
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
123 function(response)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
124 if response.stanza == nil or response.stanza.attr.type ~= "result" then
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Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
125 module:log("warn", "Unexpected response to pub/sub node '%s' deletion request at %s: %s", node, service, response.stanza)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
126 return false
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
127 else
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
128 module:log("debug", "Successfully deleted pub/sub node '%s' at %s", node, service)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
129 return true
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Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
130 end
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
131 end
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
132 )
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
133 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
134
5810
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
135 function get_remote_domain_names()
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
136 -- Iterate over s2s sessions, adding them to a multimap, where the key is the local domain name,
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
137 -- mapped to a collection of remote domain names. De-duplicate all remote domain names by using
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
138 -- them as an index in a table.
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
139 local domains_by_host = {}
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
140 for session, _ in pairs(prosody.incoming_s2s) do
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
141 if session ~= nil and session.from_host ~= nil and local_domain == session.to_host then
5808
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
142 module:log("debug", "Local host '%s' has remote '%s' (inbound)", session.to_host, session.from_host);
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
143 local sessions = domains_by_host[session.to_host]
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
144 if sessions == nil then sessions = {} end; -- instantiate a new entry if none existed
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
145 sessions[session.from_host] = true
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
146 domains_by_host[session.to_host] = sessions
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
147 end
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parents: 5801
diff changeset
148 end
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Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
149
5808
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
150 -- At an earlier stage, the code iterated over all prosody.hosts, trying to generate one pubsub item for all local hosts. That turned out to be
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
151 -- to noisy. Instead, this code now creates an item that includes the local vhost only. It is assumed that this module will also be loaded for
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
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parents: 5805
diff changeset
152 -- other vhosts. Their data should then be published to distinct pub/sub services and nodes.
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
153
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154 -- for host, data in pairs(prosody.hosts) do
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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diff changeset
155 local host = local_domain
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
156 local data = prosody.hosts[host]
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
157 if data ~= nil then
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
158 local sessions = domains_by_host[host]
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
159 if sessions == nil then sessions = {} end; -- instantiate a new entry if none existed
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
160 if data.s2sout ~= nil then
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
161 for _, session in pairs(data.s2sout) do
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
162 if session.to_host ~= nil then
5808
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
163 module:log("debug", "Local host '%s' has remote '%s' (outbound)", host, session.to_host);
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
164 sessions[session.to_host] = true
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
165 domains_by_host[host] = sessions
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
166 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
167 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
168 end
5808
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
169
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
170 -- When the instance of Prosody hosts more than one host, the other hosts can be thought of as having a 'permanent' s2s connection.
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
171 for host_name, host_info in pairs(prosody.hosts) do
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
172 if host ~= host_name and host_info.type ~= "component" then
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
173 module:log("debug", "Local host '%s' has remote '%s' (vhost)", host, host_name);
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
174 sessions[host_name] = true;
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
175 domains_by_host[host] = sessions
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
176 end
2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5805
diff changeset
177 end
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
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diff changeset
178 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
179
5810
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
180 return domains_by_host
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
181 end
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
182
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
183 function publish_serverinfo()
5813
d38772479891 mod_pubsub_serverinfo: Some logging improvements
Matthew Wild <mwild1@gmail.com>
parents: 5812
diff changeset
184 module:log("debug", "Publishing server info...");
5810
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
185 local domains_by_host = get_remote_domain_names()
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
186
5803
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diff changeset
187 -- Build the publication stanza.
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
188 local request = st.iq({ type = "set", to = service, from = actor, id = new_id() })
5815
77c5709bd57a mod_pubsub_serverinfo: Add explicit xmlns to all pubsub tags
Matthew Wild <mwild1@gmail.com>
parents: 5814
diff changeset
189 :tag("pubsub", { xmlns = xmlns_pubsub })
77c5709bd57a mod_pubsub_serverinfo: Add explicit xmlns to all pubsub tags
Matthew Wild <mwild1@gmail.com>
parents: 5814
diff changeset
190 :tag("publish", { node = node, xmlns = xmlns_pubsub })
77c5709bd57a mod_pubsub_serverinfo: Add explicit xmlns to all pubsub tags
Matthew Wild <mwild1@gmail.com>
parents: 5814
diff changeset
191 :tag("item", { id = "current", xmlns = xmlns_pubsub })
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
192 :tag("serverinfo", { xmlns = "urn:xmpp:serverinfo:0" })
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
193
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
194 request:tag("domain", { name = local_domain })
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
195 :tag("federation")
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
196
5810
76b57bcfe1b2 mod_pubsub_serverinfo: Warm-up opt-in cache
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5809
diff changeset
197 local remotes = domains_by_host[local_domain]
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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diff changeset
198
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
199 if remotes ~= nil then
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
200 for remote, _ in pairs(remotes) do
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
201 -- include a domain name for remote domains, but only if they advertise support.
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
202 if does_opt_in(remote) then
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
203 request:tag("remote-domain", { name = remote }):up()
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
204 else
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
205 request:tag("remote-domain"):up()
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
206 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
207 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
208 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
209
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
210 request:up():up()
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
211
5804
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
212 module:send_iq(request):next(
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
213 function(response)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
214 if response.stanza == nil or response.stanza.attr.type ~= "result" then
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
215 module:log("warn", "Unexpected response to item publication at pub/sub node '%s' on %s: %s", node, service, response.stanza)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
216 return false
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
217 else
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
218 module:log("debug", "Successfully published item on pub/sub node '%s' at %s", node, service)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
219 return true
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
220 end
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
221 end,
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
222 function(error)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
223 module:log("warn", "Error prevented publication of item on pub/sub node at %s: %s", service, error)
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
224 end
c3eeeb968403 mod_pubsub_serverinfo: Detect existence of pub/sub node
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5803
diff changeset
225 )
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
226
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
227 return publication_interval;
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
228 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
229
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
230 local opt_in_cache = {}
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
Guus der Kinderen <guus.der.kinderen@gmail.com>
parents: 5801
diff changeset
231
5817
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
232 -- Public providers are already public, so we fetch the list of providers
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
233 -- registered on providers.xmpp.net so we don't have to disco them individually
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
234 local function update_public_providers()
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
235 return http.request(public_providers_url)
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
236 :next(function (response)
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
237 assert(
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
238 response.headers["content-type"] == "application/json",
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
239 "invalid mimetype: "..tostring(response.headers["content-type"])
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
240 );
7905766d01f6 mod_pubsub_serverinfo: Treat public providers as public
Matthew Wild <mwild1@gmail.com>
parents: 5816
diff changeset
241 return json.decode(response.body);
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242 end)
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243 :next(function (public_server_domains)
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244 module:log("debug", "Retrieved list of %d public providers", #public_server_domains);
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245 for _, domain in ipairs(public_server_domains) do
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246 opt_in_cache[domain] = {
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247 opt_in = true;
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248 expires = os.time() + (86400 * 1.5);
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249 };
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250 end
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251 end, function (err)
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252 module:log("warn", "Failed to fetch/decode provider list: %s", err);
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253 end);
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254 end
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255
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256 module:daily("update public provider list", update_public_providers);
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257
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258 function cache_warm_up()
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259 module:log("debug", "Warming up opt-in cache")
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260
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261 update_public_providers():finally(function ()
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262 module:log("debug", "Querying known domains for opt-in cache...");
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263 local domains_by_host = get_remote_domain_names()
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264 local remotes = domains_by_host[local_domain]
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265 if remotes ~= nil then
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266 for remote in pairs(remotes) do
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267 does_opt_in(remote)
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268 end
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269 end
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270 end);
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271 end
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272
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273 function does_opt_in(remoteDomain)
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274
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275 -- try to read answer from cache.
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276 local cached_value = opt_in_cache[remoteDomain]
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277 local ttl = cached_value and os.difftime(cached_value.expires, os.time());
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278 if cached_value and ttl > (publication_interval + 60) then
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279 module:log("debug", "Opt-in status (from cache) for '%s': %s", remoteDomain, cached_value.opt_in)
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280 return cached_value.opt_in;
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281 end
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282
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283 -- We don't have a cached value, or it is nearing expiration - refresh it now
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284 -- TODO worry about not having multiple requests in flight to the same domain.cached_value
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285
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286 module:log("debug", "%s: performing disco/info to determine opt-in", remoteDomain)
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287 local discoRequest = st.iq({ type = "get", to = remoteDomain, from = actor, id = new_id() })
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288 :tag("query", { xmlns = "http://jabber.org/protocol/disco#info" })
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289
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290 module:send_iq(discoRequest):next(
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diff changeset
291 function(response)
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diff changeset
292 if response.stanza ~= nil and response.stanza.attr.type == "result" then
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293 local query = response.stanza:get_child("query", "http://jabber.org/protocol/disco#info")
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294 if query ~= nil then
5809
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diff changeset
295 for feature in query:childtags("feature") do
5813
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296 --module:log("debug", "Disco/info feature for '%s': %s", remoteDomain, feature)
5803
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297 if feature.attr.var == 'urn:xmpp:serverinfo:0' then
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298 module:log("debug", "Disco/info response included opt-in for '%s'", remoteDomain)
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diff changeset
299 opt_in_cache[remoteDomain] = {
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300 opt_in = true;
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diff changeset
301 expires = os.time() + cache_ttl;
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diff changeset
302 }
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diff changeset
303 return; -- prevent 'false' to be cached, down below.
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diff changeset
304 end
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305 end
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306 end
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diff changeset
307 end
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2465d5191ae9 mod_pubsub_serverinfo: Consider sibling vhosts 'connected'
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diff changeset
308 module:log("debug", "Disco/info response did not include opt-in for '%s'", remoteDomain)
5803
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diff changeset
309 opt_in_cache[remoteDomain] = {
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diff changeset
310 opt_in = false;
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diff changeset
311 expires = os.time() + cache_ttl;
5803
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diff changeset
312 }
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diff changeset
313 end,
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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diff changeset
314 function(response)
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parents: 5805
diff changeset
315 module:log("debug", "An error occurred while performing a disco/info request to determine opt-in for '%s'", remoteDomain, response)
5803
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parents: 5801
diff changeset
316 opt_in_cache[remoteDomain] = {
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
317 opt_in = false;
5805
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diff changeset
318 expires = os.time() + cache_ttl;
5803
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diff changeset
319 }
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
320 end
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
321 );
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diff changeset
322
5812
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diff changeset
323 if ttl and ttl <= 0 then
cf5f77491323 mod_pubsub_serverinfo: Refresh cache entries if they will expire before next run
Matthew Wild <mwild1@gmail.com>
parents: 5810
diff changeset
324 -- Cache entry expired, remove it and assume not opted in
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parents: 5810
diff changeset
325 opt_in_cache[remoteDomain] = nil;
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parents: 5810
diff changeset
326 return false;
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parents: 5810
diff changeset
327 end
5803
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diff changeset
328
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diff changeset
329 return cached_value and cached_value.opt_in;
5803
f55e65315ba0 mod_pubsub_serverinfo: implemented all basic features
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parents: 5801
diff changeset
330 end