92 lines
2.8 KiB
Go
92 lines
2.8 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 pending_tasks
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import (
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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/libbeat/logp"
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"github.com/elastic/beats/metricbeat/helper"
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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/elasticsearch"
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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.AddMetricSet(elasticsearch.ModuleName, "pending_tasks", New, hostParser)
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}
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var (
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hostParser = parse.URLHostParserBuilder{
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DefaultScheme: "http",
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PathConfigKey: "path",
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DefaultPath: "_cluster/pending_tasks",
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}.Build()
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)
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// MetricSet holds any configuration or state information. It must implement
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// the mb.MetricSet interface. And this is best achieved by embedding
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// mb.BaseMetricSet because it implements all of the required mb.MetricSet
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// interface methods except for Fetch.
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type MetricSet struct {
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mb.BaseMetricSet
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http *helper.HTTP
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}
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// New creates a new instance of the MetricSet. New is responsible for unpacking
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// any MetricSet specific configuration options if there are any.
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func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
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cfgwarn.Beta("The " + base.FullyQualifiedName() + " metricset is beta.")
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http, err := helper.NewHTTP(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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base,
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http,
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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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func (m *MetricSet) Fetch(r mb.ReporterV2) {
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isMaster, err := elasticsearch.IsMaster(m.http, m.HostData().SanitizedURI)
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if err != nil {
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r.Error(errors.Wrap(err, "error determining if connected Elasticsearch node is master"))
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return
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}
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// Not master, no event sent
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if !isMaster {
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logp.Debug(elasticsearch.ModuleName, "Trying to fetch pending tasks from a non-master node.")
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return
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}
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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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