youtubebeat/vendor/github.com/elastic/beats/metricbeat/module/elasticsearch/cluster_stats/cluster_stats.go

88 lines
2.5 KiB
Go

// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file 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.
package cluster_stats
import (
"github.com/pkg/errors"
"github.com/elastic/beats/libbeat/common/cfgwarn"
"github.com/elastic/beats/libbeat/logp"
"github.com/elastic/beats/metricbeat/mb"
"github.com/elastic/beats/metricbeat/module/elasticsearch"
)
func init() {
mb.Registry.MustAddMetricSet(elasticsearch.ModuleName, "cluster_stats", New,
mb.WithHostParser(elasticsearch.HostParser),
mb.WithNamespace("elasticsearch.cluster.stats"),
)
}
const (
clusterStatsPath = "/_cluster/stats"
)
// MetricSet defines all fields of the MetricSet
type MetricSet struct {
*elasticsearch.MetricSet
}
// New create a new instance of the MetricSet
func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
cfgwarn.Beta("the " + base.FullyQualifiedName() + " metricset is beta")
ms, err := elasticsearch.NewMetricSet(base, clusterStatsPath)
if err != nil {
return nil, err
}
return &MetricSet{MetricSet: ms}, nil
}
// Fetch methods implements the data gathering and data conversion to the right format
func (m *MetricSet) Fetch(r mb.ReporterV2) {
isMaster, err := elasticsearch.IsMaster(m.HTTP, m.HostData().SanitizedURI+clusterStatsPath)
if err != nil {
r.Error(errors.Wrap(err, "error determining if connected Elasticsearch node is master"))
return
}
// Not master, no event sent
if !isMaster {
logp.Debug(elasticsearch.ModuleName, "trying to fetch cluster stats from a non master node.")
return
}
content, err := m.HTTP.FetchContent()
if err != nil {
r.Error(err)
return
}
info, err := elasticsearch.GetInfo(m.HTTP, m.HostData().SanitizedURI+clusterStatsPath)
if err != nil {
r.Error(errors.Wrap(err, "failed to get info from Elasticsearch"))
return
}
if m.MetricSet.XPack {
eventMappingXPack(r, m, *info, content)
} else {
eventMapping(r, *info, content)
}
}