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launchdarkly_server_sdk

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LaunchDarkly SDK for Erlang

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launchdarkly_server_sdk src ldclient_event_sup.erl
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src/ldclient_event_sup.erl 

%%-------------------------------------------------------------------

%% @doc Event supervisor

%% @private

%% @end

%%-------------------------------------------------------------------



-module(ldclient_event_sup).



-behaviour(supervisor).



%% Supervision

-export([start_link/2, init/1]).



%% Helper macro for declaring children of supervisor

-define(CHILD(Id, Module, Args, Type), {Id, {Module, start_link, Args}, permanent, 5000, Type, [Module]}).



%%===================================================================

%% Supervision

%%===================================================================



-spec start_link(SupName :: atom(), Tag :: atom()) ->

    {ok, Pid :: pid()} | ignore | {error, Reason :: term()}.

start_link(SupName, Tag) ->

    error_logger:info_msg("Starting event supervisor for ~p with name ~p", [Tag, SupName]),

    supervisor:start_link({local, SupName}, ?MODULE, [Tag]).



-spec init(Args :: term()) ->

    {ok, {{supervisor:strategy(), non_neg_integer(), pos_integer()}, [supervisor:child_spec()]}}.

init([Tag]) ->

    {ok, {{one_for_one, 1, 5}, children(Tag)}}.



%%===================================================================

%% Internal functions

%%===================================================================



-spec children(Tag :: atom()) -> [supervisor:child_spec()].

children(Tag) ->

    UserCacheName = ldclient_context_cache:get_local_reg_name(Tag),

    ContextKeysCapacity = ldclient_config:get_value(Tag, context_keys_capacity),

    UserCacheWorker = ?CHILD(lru, lru, [{local, UserCacheName}, [{max_objs, ContextKeysCapacity}]], worker),

    EventStorageWorker = ?CHILD(ldclient_event_server, ldclient_event_server, [Tag], worker),

    EventProcessWorker = ?CHILD(ldclient_event_process_server, ldclient_event_process_server, [Tag], worker),

    [UserCacheWorker, EventStorageWorker, EventProcessWorker].