prosody
7ba686696250
plugins/mod_cron.lua

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plugins/mod_cron.lua @ 12123:7ba686696250

openmetrics/histograms: fix incorrect condition for bucketing The buckets thresholds are to be taken as "less than or equal to". The condition as written in the code did only "less than", not "less than or equal to". That's fixed now.
author Jonas Schäfer <jonas@wielicki.name>
date Sun, 26 Dec 2021 22:32:00 +0100
parent 12009:f6fff0658108
child 12186:7f25ac9d8f0d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 module:set_global();
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2
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3 local async = require("util.async");
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4 local datetime = require("util.datetime");
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5
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6 local periods = { hourly = 3600; daily = 86400; weekly = 7 * 86400 }
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7
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8 local active_hosts = {}
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9
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10 function module.add_host(host_module)
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11
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12 local last_run_times = host_module:open_store("cron", "map");
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13 active_hosts[host_module.host] = true;
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14
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15 local function save_task(task, started_at) last_run_times:set(nil, task.id, started_at); end
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16
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17 local function task_added(event)
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18 local task = event.item;
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19 if task.name == nil then task.name = task.when; end
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20 if task.id == nil then task.id = event.source.name .. "/" .. task.name:gsub("%W", "_"):lower(); end
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21 if task.last == nil then task.last = last_run_times:get(nil, task.id); end
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22 task.save = save_task;
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23 module:log("debug", "%s task %s added, last run %s", task.when, task.id,
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24 task.last and datetime.datetime(task.last) or "never");
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25 if task.last == nil then
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26 local now = os.time();
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27 task.last = now - now % periods[task.when];
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28 end
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29 return true
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30 end
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31
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32 local function task_removed(event)
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33 local task = event.item;
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34 host_module:log("debug", "Task %s removed", task.id);
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35 return true
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36 end
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37
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38 host_module:handle_items("task", task_added, task_removed, true);
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39
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40 function host_module.unload() active_hosts[host_module.host] = nil; end
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41 end
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42
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43 local function should_run(when, last) return not last or last + periods[when] <= os.time() end
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44
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45 local function run_task(task)
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46 local started_at = os.time();
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47 task:run(started_at);
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48 task:save(started_at);
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49 end
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50
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51 local task_runner = async.runner(run_task);
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52 scheduled = module:add_timer(1, function()
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53 module:log("info", "Running periodic tasks");
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54 local delay = 3600;
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55 for host in pairs(active_hosts) do
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56 module:log("debug", "Running periodic tasks for host %s", host);
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57 for _, task in ipairs(module:context(host):get_host_items("task")) do
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58 module:log("debug", "Considering %s task %s (%s)", task.when, task.id, task.run);
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59 if should_run(task.when, task.last) then task_runner:run(task); end
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60 end
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61 end
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62 module:log("debug", "Wait %ds", delay);
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63 return delay
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64 end);