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mod_pubsub_stats/mod_pubsub_stats.lua @ 3709:d3d27f2558fb

mod_http_altconnect: Add a stub README (thanks JC for reminding me this existed)
author Kim Alvefur <zash@zash.se>
date Thu, 10 Oct 2019 20:43:49 +0200
parent 3408:b2ce818ec19c
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1 local st = require "util.stanza";
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3 local pubsub = module:depends"pubsub";
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4
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5 local actor = module.host .. "/modules/" .. module.name;
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7 local pubsub_xmlns = "http://jabber.org/protocol/pubsub"
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8
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9 local node = module:get_option_string(module.name .. "_node", "stats");
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10
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11 local function publish_stats(stats, stats_extra)
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12 local id = "current";
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13 local xitem = st.stanza("item", { xmlns = pubsub_xmlns, id = id })
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14 :tag("query", { xmlns = "http://jabber.org/protocol/stats" });
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16 for name, value in pairs(stats) do
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17 local stat_extra = stats_extra[name];
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18 local unit = stat_extra and stat_extra.units;
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19 xitem:tag("stat", { name = name, unit = unit, value = tostring(value) }):up();
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20 end
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21
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22 local ok, err = pubsub.service:publish(node, actor, id, xitem);
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23 if not ok then
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24 module:log("error", "Error publishing stats: %s", err);
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25 end
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26 end
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28 function module.load()
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29 pubsub.service:create(node, true, {
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30 persistent_items = false;
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31 max_items = 1;
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32 });
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33 pubsub.service:set_affiliation(node, true, actor, "publisher");
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34 end
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36 module:hook_global("stats-updated", function (event)
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37 publish_stats(event.stats, event.stats_extra);
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38 end);
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40 function module.unload()
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41 pubsub.service:delete(node, true);
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42 end
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44 module:hook("pubsub-summary/http://jabber.org/protocol/stats", function (event)
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45 local payload = event.payload;
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46 local summary = {};
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47 for stat in payload:childtags("stat") do
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48 if stat.attr.name and stat.attr.value then
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49 table.insert(summary, string.format("%s: %g %s", stat.attr.name, tonumber(stat.attr.value), stat.attr.units or ""));
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50 end
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51 end
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52 table.sort(summary);
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53 return table.concat(summary, "\n");
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54 end);
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