machi/src/machi_flu_metadata_mgr_sup.erl
2015-10-05 16:37:53 -05:00

59 lines
1.9 KiB
Erlang

%% -------------------------------------------------------------------
%%
%% Copyright (c) 2007-2015 Basho Technologies, Inc. All Rights Reserved.
%%
%% This file is provided to you under the Apache License,
%% Version 2.0 (the "License"); you may not use this file
%% except in compliance with the License. You may obtain
%% a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing,
%% software distributed under the License is distributed on an
%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
%% KIND, either express or implied. See the License for the
%% specific language governing permissions and limitations
%% under the License.
%%
%% -------------------------------------------------------------------
%% @doc This is the supervisor for the collection of metadata
%% managers. It's started out of `machi_flu_psup'. It reads an
%% application environment variable named `metadata_manager_count'
%% with a default of 10 if it is not set.
-module(machi_flu_metadata_mgr_sup).
-behaviour(supervisor).
%% public API
-export([
child_spec/3,
start_link/3
]).
%% supervisor callback
-export([init/1]).
child_spec(FluName, DataDir, N) ->
{make_sup_name(FluName),
{?MODULE, start_link, [FluName, DataDir, N]},
permanent, 5000, supervisor, [?MODULE]}.
start_link(FluName, DataDir, N) ->
supervisor:start_link({local, make_sup_name(FluName)}, ?MODULE, [FluName, DataDir, N]).
init([FluName, DataDir, N]) ->
Restart = one_for_one,
MaxRestarts = 1000,
SecondsBetween = 3600,
SupFlags = {Restart, MaxRestarts, SecondsBetween},
Children =
[ machi_flu_metadata_mgr:child_spec(FluName, C, DataDir, N) || C <- lists:seq(1,N) ],
{ok, {SupFlags, Children}}.
make_sup_name(FluName) when is_atom(FluName) ->
list_to_atom(atom_to_list(FluName) ++ "_metadata_mgr_sup").