Mercurial > prosody-modules
annotate mod_measure_storage/mod_measure_storage.lua @ 3656:3e0f4d727825
mod_vcard_muc: Add an alternative method of signaling avatar change
When the avatar has been changed, a signal is sent that the room
configuration has changed. Clients then do a disco#info query to find
the SHA-1 of the new avatar. They can then fetch it as before, or not if
they have it cached already.
This is meant to be less disruptive than signaling via presence, which
caused problems for some clients.
If clients transition to the new method, the old one can eventually be removed.
The namespace is made up while waiting for standardization.
Otherwise it is very close to what's described in
https://xmpp.org/extensions/inbox/muc-avatars.html
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 25 Aug 2019 20:46:43 +0200 |
parents | 04ae5b45e6c7 |
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mod_measure_storage: Experimental new module to measure storage API operations (requires 0.10)
Matthew Wild <mwild1@gmail.com>
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1 module:set_global() |
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2 |
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3 local function return_args_after_calling(f, ...) |
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4 f(); |
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5 return ... |
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6 end |
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7 |
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8 local function time_method(module, store_name, store_type, method_name, method_function) |
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9 local opt_use_tags = module:get_option_boolean("measure_storage_tagged_metric", false); |
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10 |
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11 local metric_name, metric_tags; |
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12 if opt_use_tags then |
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13 metric_name, metric_tags = "storage_operation", ("store_name:%s,store_type:%s,store_operation:%s"):format(store_name, store_type, method_name); |
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14 else |
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15 metric_name = store_name.."_"..store_type.."_"..method_name; |
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16 end |
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17 local measure_operation_started = module:measure(metric_name, "times", metric_tags); |
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18 |
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19 return function (...) |
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20 module:log("debug", "Measuring storage operation %s (%s)", metric_name, metric_tags or "no tags"); |
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21 local measure_operation_complete = measure_operation_started(); |
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22 return return_args_after_calling(measure_operation_complete, method_function(...)); |
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23 end; |
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24 end |
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25 |
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26 local function wrap_store(module, store_name, store_type, store) |
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27 local new_store = setmetatable({}, { |
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28 __index = function (t, method_name) |
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29 local original_method = store[method_name]; |
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30 if type(original_method) ~= "function" then |
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31 if original_method then |
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32 rawset(t, method_name, original_method); |
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33 end |
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34 return original_method; |
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35 end |
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36 local timed_method = time_method(module, store_name, store_type, method_name, original_method); |
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Matthew Wild <mwild1@gmail.com>
parents:
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37 rawset(t, method_name, timed_method); |
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Matthew Wild <mwild1@gmail.com>
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38 return timed_method; |
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39 end; |
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40 }); |
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41 return new_store; |
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42 end |
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43 |
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44 local function hook_event(module) |
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45 module:hook("store-opened", function(event) |
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46 event.store = wrap_store(module, event.store_name, event.store_type or "keyval", event.store); |
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47 end); |
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48 end |
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49 |
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50 function module.load() |
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51 hook_event(module); |
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52 end |
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53 |
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54 function module.add_host(module) |
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55 hook_event(module); |
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56 end |