Add a metadata manager supervisor

src/machi_flu_metadata_mgr_sup.erl

@@ -0,0 +1,59 @@
+%% -------------------------------------------------------------------
+%%
+%% 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").
+