127 lines
3 KiB
Go
127 lines
3 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 node
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import (
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"encoding/json"
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"github.com/pkg/errors"
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"github.com/elastic/beats/libbeat/common/cfgwarn"
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"github.com/elastic/beats/metricbeat/mb"
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"github.com/elastic/beats/metricbeat/module/rabbitmq"
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)
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func init() {
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mb.Registry.MustAddMetricSet("rabbitmq", "node", New,
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mb.WithHostParser(rabbitmq.HostParser),
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mb.DefaultMetricSet(),
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)
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}
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// MetricSet for fetching RabbitMQ node metrics
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type MetricSet struct {
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*rabbitmq.MetricSet
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}
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// ClusterMetricSet is the MetricSet type used when node.collect is "all"
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type ClusterMetricSet struct {
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*rabbitmq.MetricSet
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}
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// New creates new instance of MetricSet
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func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
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cfgwarn.Beta("The rabbitmq node metricset is beta")
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config := defaultConfig
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if err := base.Module().UnpackConfig(&config); err != nil {
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return nil, err
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}
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switch config.Collect {
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case configCollectNode:
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ms, err := rabbitmq.NewMetricSet(base, rabbitmq.OverviewPath)
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if err != nil {
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return nil, err
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}
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return &MetricSet{ms}, nil
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case configCollectCluster:
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ms, err := rabbitmq.NewMetricSet(base, rabbitmq.NodesPath)
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if err != nil {
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return nil, err
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}
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return &ClusterMetricSet{ms}, nil
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default:
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return nil, errors.Errorf("incorrect node.collect: %s", config.Collect)
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}
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}
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type apiOverview struct {
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Node string `json:"node"`
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}
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func (m *MetricSet) fetchOverview() (*apiOverview, error) {
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d, err := m.HTTP.FetchContent()
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if err != nil {
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return nil, err
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}
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var apiOverview apiOverview
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err = json.Unmarshal(d, &apiOverview)
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if err != nil {
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return nil, errors.Wrap(err, string(d))
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}
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return &apiOverview, nil
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}
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// Fetch metrics from rabbitmq node
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func (m *MetricSet) Fetch(r mb.ReporterV2) {
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o, err := m.fetchOverview()
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if err != nil {
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r.Error(err)
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return
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}
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node, err := rabbitmq.NewMetricSet(m.BaseMetricSet, rabbitmq.NodesPath+"/"+o.Node)
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if err != nil {
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r.Error(err)
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return
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}
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content, err := node.HTTP.FetchJSON()
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if err != nil {
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r.Error(err)
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return
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}
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eventMapping(r, content)
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}
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// Fetch metrics from all rabbitmq nodes in the cluster
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func (m *ClusterMetricSet) Fetch(r mb.ReporterV2) {
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content, err := m.HTTP.FetchContent()
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if err != nil {
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r.Error(err)
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return
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}
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eventsMapping(r, content)
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}
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