annotate mod_unsubscriber/mod_unsubscriber.lua @ 5668:ecfd7aece33b

mod_measure_modules: Report module statuses via OpenMetrics Someone in the chat asked about a health check endpoint, which reminded me of mod_http_status, which provides access to module statuses with full details. After that, this idea came about, which seems natural. As noted in the README, it could be used to monitor that critical modules are in fact loaded correctly. As more modules use the status API, the more useful this module and mod_http_status becomes.
author Kim Alvefur <zash@zash.se>
date Fri, 06 Oct 2023 18:34:39 +0200
parents e00dc913d965
children
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e00dc913d965 mod_unsubscriber: Revoke roster subscriptions of unreachable hosts
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1 assert(module:get_host_type() == "component", "This module should be loaded as a Component");
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2
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3 local st = require "util.stanza";
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4
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5 module:hook("presence/bare", function(event)
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6 local origin, stanza = event.origin, event.stanza;
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7 if stanza.attr.type == "probe" then
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8 -- they are subscribed and want our current presence
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9 -- tell them we denied their subscription
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10 local reply = st.reply(stanza)
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11 reply.attr.type = "unsubcribed";
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12 origin.send(reply);
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13 return true;
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14 elseif stanza.attr.type == nil then
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15 -- they think we are subscribed and sent their current presence
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16 -- tell them we unsubscribe
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17 local reply = st.reply(stanza)
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18 reply.attr.type = "unsubcribe";
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19 origin.send(reply);
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20 return true;
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21 end
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22 -- fall trough to default error
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23 end);