| %% ------------------------------------------------------------------- |
| %% |
| %% 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 processes with large mailboxes |
| %% and sends a warning message if one or more processes exceed the |
| %% threshold. |
| -module(weatherreport_check_message_queues). |
| -behaviour(weatherreport_check). |
| |
| -export([ |
| description/0, |
| valid/0, |
| check/1, |
| format/1 |
| ]). |
| |
| -define(THRESHOLD, 1000). |
| |
| -spec description() -> string(). |
| description() -> |
| "Check for processes with large mailboxes". |
| |
| -spec valid() -> boolean(). |
| valid() -> |
| weatherreport_node:can_connect(). |
| |
| -spec check(list()) -> [{atom(), term()}]. |
| check(Opts) -> |
| weatherreport_util:check_proc_count( |
| message_queue_len, |
| ?THRESHOLD, |
| Opts |
| ). |
| |
| -spec format(term()) -> {io:format(), [term()]}. |
| format({high, {Pid, MBoxSize, Info, Pinfo}}) -> |
| {"Process ~w has excessive mailbox size of ~w: ~w ~w", [Pid, MBoxSize, Info, Pinfo]}; |
| format({high, {Pid, MBoxSize, Info}}) -> |
| {"Process ~w has excessive mailbox size of ~w: ~w", [Pid, MBoxSize, Info]}; |
| format({ok, {Pid, MBoxSize, Info}}) -> |
| {"Process ~w has mailbox size of ~w: ~w", [Pid, MBoxSize, Info]}. |