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%%============================================================================== |
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%% Copyright 2019 Erlang Solutions Ltd. |
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%% |
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%% Licensed under the Apache License, Version 2.0 (the "License"); |
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%% you may not use this file except in compliance with the License. |
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%% You may obtain a copy of the License at |
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%% |
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%% http://www.apache.org/licenses/LICENSE-2.0 |
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%% |
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%% Unless required by applicable law or agreed to in writing, software |
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%% distributed under the License is distributed on an "AS IS" BASIS, |
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%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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%% See the License for the specific language governing permissions and |
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%% limitations under the License. |
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%%============================================================================== |
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-module(mongoose_metrics_probe_tcp). |
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-behaviour(mongoose_metrics_probe). |
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-export([sample/0, datapoints/0]). |
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datapoints() -> |
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:-( |
[value]. |
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sample() -> |
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OpenTcpPorts = length(port_list(name, "tcp_inet")), |
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#{value => OpenTcpPorts}. |
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-spec port_list(Attr::atom(), term()) -> [port()]. |
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port_list(Attr, Val) -> |
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[Port || Port <- erlang:ports(), |
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{Attr, Val} =:= erlang:port_info(Port, Attr)]. |