prosody
3d5135e8a2a7
teal-src/plugins/mod_cron.tl

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

teal-src/plugins/mod_cron.tl @ 11986:3d5135e8a2a7

mod_cron: Initial commit of periodic task runner A number of modules now have periodic tasks that need to run, e.g. for cleaning out old messages or files. This has highlighted a need for coordinating and optimizing scheduling of such tasks.
author Kim Alvefur <zash@zash.se>
date Sun, 21 Nov 2021 15:50:36 +0100
child 11995:bbd3ac65640d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11986
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 module:set_global();
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 local async = require "util.async";
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
5 local record map_store<K,V>
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 -- TODO move to somewhere sensible
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7 get : function (map_store<K,V>, string, K) : V
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 set : function (map_store<K,V>, string, K, V)
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11 local enum frequency
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 "hourly"
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13 "daily"
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
14 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 local record task_spec
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
17 id : string -- unique id
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
18 name : string -- name or short description
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19 when : frequency
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
20 last : integer
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
21 run : function (task_spec, integer)
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 save : function (task_spec, integer)
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 local record task_event
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26 source : module
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 item : task_spec
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
28 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30 local periods : { frequency : integer } = { hourly = 3600, daily = 86400 }
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 local active_hosts : { string : boolean } = { }
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34 function module.add_host(host_module : moduleapi)
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
35
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 local last_run_times = host_module:open_store("cron", "map") as map_store<string,integer>;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 active_hosts[host_module.host] = true;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
38
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
39 local function save_task(task : task_spec, started_at : integer)
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40 last_run_times:set(nil, task.id, started_at);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
41 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
42
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 local function task_added(event : task_event) : boolean
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 local task = event.item;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45 if task.name == nil then
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46 task.name = task.when;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 if task.id == nil then
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
49 task.id = event.source.name .. "/" .. task.name:gsub("%W", "_"):lower();
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51 if task.last == nil then
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 task.last = last_run_times:get(nil, task.id);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 task.save = save_task;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
55 module:log("debug", "%s task %s added, last run %s", task.when, task.id,
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
56 task.last and require"util.datetime".datetime(task.last) or "never");
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 return true;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
58 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
59
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
60 local function task_removed(event : task_event) : boolean
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
61 local task = event.item;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
62 host_module:log("debug", "Task %s removed", task.id);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
63 return true;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 host_module:handle_items("task", task_added, task_removed, true);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68 function host_module.unload()
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 active_hosts[host_module.host]=nil;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
70 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
71 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73 local function should_run(when : frequency, last : integer) : boolean
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 return not last or last + periods[when] <= os.time();
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77 local function run_task(task : task_spec)
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 local started_at = os.time();
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 task:run(started_at);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80 task:save(started_at);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
81 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
82
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
83 local task_runner = async.runner(run_task);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
84 module:add_timer(1, function() : integer
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
85 module:log("info", "Running periodic tasks");
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
86 local delay = 3600;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
87 for host in pairs(active_hosts) do
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
88 module:log("debug", "Running periodic tasks for host %s", host);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
89 for _, task in ipairs(module:context(host):get_host_items("task") as { task_spec } ) do
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
90 module:log("debug", "Considering %s task %s (%s)", task.when, task.id, task.run);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
91 if should_run(task.when, task.last) then task_runner:run(task); end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
92 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
93 end
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
94 module:log("debug", "Wait %ds", delay);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
95 return delay;
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
96 end);
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
97
3d5135e8a2a7 mod_cron: Initial commit of periodic task runner
Kim Alvefur <zash@zash.se>
parents:
diff changeset
98 -- TODO measure load, pick a good time to do stuff