| %% ------------------------------------------------------------------- |
| %% |
| %% derived from riaknostic - automated diagnostic tools for Riak |
| %% |
| %% Copyright (c) 2011 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. |
| %% |
| %% ------------------------------------------------------------------- |
| %% |
| %% File renamed from riaknostic_check_ring_membership.erl to |
| %% weatherreport_check_membership.erl and modified to work with Apache |
| %% CouchDB |
| %% |
| %% Copyright (c) 2014 Cloudant |
| %% |
| %% ------------------------------------------------------------------- |
| |
| %% @doc Diagnostic that checks whether the local node is a member of |
| %% the ring. This might arise when the node name in vm.args has |
| %% changed but the node has not been renamed in the ring. |
| -module(weatherreport_check_membership). |
| -behaviour(weatherreport_check). |
| |
| -export([ |
| description/0, |
| valid/0, |
| check/1, |
| format/1 |
| ]). |
| |
| -include_lib("eunit/include/eunit.hrl"). |
| |
| -spec description() -> string(). |
| description() -> |
| "Cluster membership validity". |
| |
| -spec valid() -> boolean(). |
| valid() -> |
| weatherreport_node:can_connect(). |
| |
| -spec check(list()) -> [{atom(), term()}]. |
| check(_Opts) -> |
| NodeName = node(), |
| Members = mem3:nodes(), |
| case lists:member(NodeName, Members) of |
| true -> |
| []; |
| false -> |
| [{warning, {not_ring_member, NodeName}}] |
| end. |
| |
| -spec format(term()) -> {io:format(), [term()]}. |
| format({not_ring_member, Nodename}) -> |
| {"Local node ~w is not a member of the cluster. Please check that the -name setting in vm.args is correct.", |
| [Nodename]}. |