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%% -------------------------------------------------------------------
%%
%% weatherreport - automated diagnostic tools for CouchDB
%%
%% Copyright (c) 2014 Cloudant
%%
%% 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 Diagnostic that checks for the presence of the mem3_sync
%% registered process. If this is not found a warning message will be
%% sent, otherwise only informational messages.
-module(weatherreport_check_mem3_sync).
-behaviour(weatherreport_check).
-export([
description/0,
valid/0,
check/1,
format/1
]).
-spec description() -> string().
description() ->
"Check there is a registered mem3_sync process".
-spec valid() -> boolean().
valid() ->
weatherreport_node:can_connect().
-spec check(list()) -> [{atom(), term()}].
check(_Opts) ->
case erlang:whereis(mem3_sync) of
undefined ->
[{warning, mem3_sync_not_found}];
Pid ->
[{info, {mem3_sync_found, Pid}}]
end.
-spec format(term()) -> {io:format(), [term()]}.
format(mem3_sync_not_found) ->
{"No mem3_sync process found on local node.", []};
format({mem3_sync_found, Pid}) ->
{"mem3_sync process found on local node with pid ~w", [Pid]}.
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