122 lines
3.4 KiB
Go
122 lines
3.4 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// +build darwin freebsd linux windows
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package process_summary
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import (
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"github.com/pkg/errors"
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"github.com/elastic/beats/libbeat/common"
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"github.com/elastic/beats/libbeat/logp"
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"github.com/elastic/beats/libbeat/metric/system/process"
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"github.com/elastic/beats/metricbeat/mb"
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"github.com/elastic/beats/metricbeat/mb/parse"
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sigar "github.com/elastic/gosigar"
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)
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// init registers the MetricSet with the central registry.
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// The New method will be called after the setup of the module and before starting to fetch data
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func init() {
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mb.Registry.MustAddMetricSet("system", "process_summary", New,
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mb.WithHostParser(parse.EmptyHostParser),
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mb.DefaultMetricSet(),
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)
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}
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// MetricSet type defines all fields of the MetricSet
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// As a minimum it must inherit the mb.BaseMetricSet fields, but can be extended with
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// additional entries. These variables can be used to persist data or configuration between
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// multiple fetch calls.
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type MetricSet struct {
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mb.BaseMetricSet
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}
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// New create a new instance of the MetricSet
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// Part of new is also setting up the configuration by processing additional
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// configuration entries if needed.
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func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
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return &MetricSet{
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BaseMetricSet: base,
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}, nil
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}
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// Fetch methods implements the data gathering and data conversion to the right format
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// It returns the event which is then forward to the output. In case of an error, a
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// descriptive error must be returned.
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func (m *MetricSet) Fetch() (common.MapStr, error) {
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pids, err := process.Pids()
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if err != nil {
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return nil, errors.Wrap(err, "failed to fetch the list of PIDs")
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}
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var summary struct {
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sleeping int
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running int
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idle int
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stopped int
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zombie int
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unknown int
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dead int
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}
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for _, pid := range pids {
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state := sigar.ProcState{}
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err = state.Get(pid)
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if err != nil {
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summary.unknown += 1
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continue
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}
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switch byte(state.State) {
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case 'S':
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summary.sleeping++
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case 'R':
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summary.running++
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case 'D':
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summary.idle++
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case 'I':
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summary.idle++
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case 'T':
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summary.stopped++
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case 'Z':
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summary.zombie++
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case 'X':
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summary.dead++
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default:
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logp.Err("Unknown or unexpected state <%c> for process with pid %d", state.State, pid)
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summary.unknown++
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}
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}
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event := common.MapStr{
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"total": len(pids),
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"sleeping": summary.sleeping,
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"running": summary.running,
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"idle": summary.idle,
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"stopped": summary.stopped,
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"zombie": summary.zombie,
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"unknown": summary.unknown,
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"dead": summary.dead,
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}
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// change the name space to use . instead of _
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event[mb.NamespaceKey] = "process.summary"
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return event, nil
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}
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