120 lines
3.9 KiB
Go
120 lines
3.9 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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package state_node
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import (
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"github.com/elastic/beats/libbeat/common"
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"github.com/elastic/beats/libbeat/common/kubernetes"
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p "github.com/elastic/beats/metricbeat/helper/prometheus"
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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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"github.com/elastic/beats/metricbeat/module/kubernetes/util"
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)
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const (
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defaultScheme = "http"
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defaultPath = "/metrics"
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)
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var (
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hostParser = parse.URLHostParserBuilder{
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DefaultScheme: defaultScheme,
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DefaultPath: defaultPath,
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}.Build()
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mapping = &p.MetricsMapping{
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Metrics: map[string]p.MetricMap{
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"kube_node_info": p.InfoMetric(),
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"kube_node_status_allocatable_pods": p.Metric("pod.allocatable.total"),
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"kube_node_status_capacity_pods": p.Metric("pod.capacity.total"),
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"kube_node_status_capacity_memory_bytes": p.Metric("memory.capacity.bytes"),
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"kube_node_status_allocatable_memory_bytes": p.Metric("memory.allocatable.bytes"),
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"kube_node_status_capacity_cpu_cores": p.Metric("cpu.capacity.cores"),
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"kube_node_status_allocatable_cpu_cores": p.Metric("cpu.allocatable.cores"),
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"kube_node_spec_unschedulable": p.BooleanMetric("status.unschedulable"),
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"kube_node_status_ready": p.LabelMetric("status.ready", "condition"),
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"kube_node_status_condition": p.LabelMetric("status.ready", "status",
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p.OpFilter(map[string]string{
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"condition": "Ready",
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})),
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},
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Labels: map[string]p.LabelMap{
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"node": p.KeyLabel("name"),
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},
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ExtraFields: map[string]string{
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mb.NamespaceKey: "node",
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},
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}
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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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if err := mb.Registry.AddMetricSet("kubernetes", "state_node", New, hostParser); err != nil {
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panic(err)
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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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prometheus p.Prometheus
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enricher util.Enricher
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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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prometheus, err := p.NewPrometheusClient(base)
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if err != nil {
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return nil, err
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}
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return &MetricSet{
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BaseMetricSet: base,
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prometheus: prometheus,
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enricher: util.NewResourceMetadataEnricher(base, &kubernetes.Node{}, false),
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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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m.enricher.Start()
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events, err := m.prometheus.GetProcessedMetrics(mapping)
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if err == nil {
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m.enricher.Enrich(events)
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}
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return events, err
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}
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// Close stops this metricset
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func (m *MetricSet) Close() error {
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m.enricher.Stop()
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return nil
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}
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