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9b720c38fee8
plugins/mod_cron.lua

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plugins/mod_cron.lua @ 13264:9b720c38fee8

mod_cron: Revert bbd3ac65640d Maybe it is better to run daily and weekly tasks 'now' on the theory that people set these things up during times that are appropriate for maintenance already, so the same time next day or next week might be fine for periodic cleanup.
author Kim Alvefur <zash@zash.se>
date Sun, 30 Jul 2023 13:03:40 +0200
parent 12977:74b9e05af71e
child 13265:6ac5ad578565
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("prosody.util.async");
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4 local datetime = require("prosody.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 return true
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26 end
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27
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28 local function task_removed(event)
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29 local task = event.item;
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30 host_module:log("debug", "Task %s removed", task.id);
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31 return true
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32 end
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33
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34 host_module:handle_items("task", task_added, task_removed, true);
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35
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36 function host_module.unload() active_hosts[host_module.host] = nil; end
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37 end
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38
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39 local function should_run(when, last) return not last or last + periods[when] * 0.995 <= os.time() end
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40
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41 local function run_task(task)
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42 local started_at = os.time();
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43 task:run(started_at);
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44 task.last = started_at;
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45 task:save(started_at);
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46 end
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47
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48 local task_runner = async.runner(run_task);
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49 scheduled = module:add_timer(1, function()
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50 module:log("info", "Running periodic tasks");
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51 local delay = 3600;
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52 for host in pairs(active_hosts) do
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53 module:log("debug", "Running periodic tasks for host %s", host);
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54 for _, task in ipairs(module:context(host):get_host_items("task")) do
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55 module:log("debug", "Considering %s task %s (%s)", task.when, task.id, task.run);
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56 if should_run(task.when, task.last) then task_runner:run(task); end
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57 end
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58 end
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59 module:log("debug", "Wait %ds", delay);
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60 return delay
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61 end);