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-module(mongoose_collector). |
| 2 |
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| 3 |
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-include("mongoose_logger.hrl"). |
| 4 |
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| 5 |
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%% gen_server callbacks |
| 6 |
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-behaviour(gen_server). |
| 7 |
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-export([start_common/3, stop_common/2]). |
| 8 |
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-export([start_link/2, init/1, handle_call/3, handle_cast/2, handle_info/2]). |
| 9 |
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| 10 |
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-ignore_xref([start_link/2]). |
| 11 |
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| 12 |
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-record(watchdog, { |
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host_type :: mongooseim:host_type(), |
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action :: fun((mongooseim:host_type(), map()) -> term()), |
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opts :: term(), |
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interval :: pos_integer(), %% milliseconds |
| 17 |
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timer_ref :: undefined | reference() |
| 18 |
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}). |
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| 20 |
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-spec start_common(atom(), mongooseim:host_type(), map()) -> term(). |
| 21 |
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start_common(Module, HostType, WOpts) -> |
| 22 |
3 |
Name = gen_mod:get_module_proc(HostType, Module), |
| 23 |
3 |
MFA = {mongoose_collector, start_link, [Name, WOpts]}, |
| 24 |
3 |
ChildSpec = {Name, MFA, permanent, 5000, worker, [Module, mongoose_collector]}, |
| 25 |
3 |
ejabberd_sup:start_child(ChildSpec). |
| 26 |
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| 27 |
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stop_common(Module, HostType) -> |
| 28 |
467 |
Name = gen_mod:get_module_proc(HostType, Module), |
| 29 |
467 |
ejabberd_sup:stop_child(Name). |
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| 31 |
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start_link(Name, Opts) -> |
| 32 |
3 |
gen_server:start_link({local, Name}, ?MODULE, Opts, []). |
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| 34 |
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init(#{host_type := HostType, |
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action := Fun, |
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opts := Opts, |
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interval := Interval}) when is_function(Fun, 2) -> |
| 38 |
3 |
State = #watchdog{host_type = HostType, |
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action = Fun, |
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opts = Opts, |
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interval = Interval, |
| 42 |
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timer_ref = undefined}, |
| 43 |
3 |
{ok, schedule_check(State)}. |
| 44 |
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| 45 |
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handle_call(Msg, From, State) -> |
| 46 |
:-( |
?UNEXPECTED_CALL(Msg, From), |
| 47 |
:-( |
{reply, ok, State}. |
| 48 |
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| 49 |
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handle_cast(Msg, State) -> |
| 50 |
:-( |
?UNEXPECTED_CAST(Msg), |
| 51 |
:-( |
{noreply, State}. |
| 52 |
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handle_info({timeout, Ref, run_action}, |
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#watchdog{timer_ref = Ref} = State) -> |
| 55 |
2 |
run_action(State), |
| 56 |
2 |
{noreply, schedule_check(State)}; |
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handle_info(Info, State) -> |
| 58 |
:-( |
?UNEXPECTED_INFO(Info), |
| 59 |
:-( |
{noreply, State}. |
| 60 |
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| 61 |
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schedule_check(State = #watchdog{interval = Interval}) -> |
| 62 |
5 |
State#watchdog{timer_ref = erlang:start_timer(Interval, self(), run_action)}. |
| 63 |
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| 64 |
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run_action(#watchdog{host_type = HostType, action = Fun, opts = Opts}) -> |
| 65 |
2 |
Fun(HostType, Opts). |