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mod_measure_storage/mod_measure_storage.lua @ 3965:2b10e51d85a6
mod_muc_limits: Add config option to limit to join stanzas only
This is a bit more limited in pre-0.11 MUC modules, because it just
detects stanzas sent to full JIDs (which would include all presence
and nick changes).
This option is useful for setups where users are typically unaffiliated,
but trusted (e.g. if access to the room is gated through some other
means such as password/token auth).
author | Matthew Wild <mwild1@gmail.com> |
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date | Fri, 03 Apr 2020 12:26:56 +0100 |
parent | 2693:04ae5b45e6c7 |
rev | line source |
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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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37 rawset(t, method_name, timed_method); |
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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 |