130 lines
3.2 KiB
Go
130 lines
3.2 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 jmx
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import (
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"github.com/joeshaw/multierror"
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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/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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)
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var (
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metricsetName = "jolokia.jmx"
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)
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// init registers the MetricSet with the central registry.
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func init() {
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if err := mb.Registry.AddMetricSet("jolokia", "jmx", New, hostParser); err != nil {
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panic(err)
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}
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}
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const (
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defaultScheme = "http"
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defaultPath = "/jolokia/"
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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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PathConfigKey: "path",
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DefaultPath: defaultPath,
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}.Build()
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)
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// MetricSet type defines all fields of the MetricSet
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type MetricSet struct {
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mb.BaseMetricSet
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mapping AttributeMapping
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namespace string
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http *helper.HTTP
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log *logp.Logger
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}
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// New create a new instance of the MetricSet
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func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
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config := struct {
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Namespace string `config:"namespace" validate:"required"`
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Mappings []JMXMapping `config:"jmx.mappings" validate:"required"`
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}{}
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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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body, mapping, err := buildRequestBodyAndMapping(config.Mappings)
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if err != nil {
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return nil, err
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}
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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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http.SetMethod("POST")
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http.SetBody(body)
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log := logp.NewLogger(metricsetName).With("host", base.HostData().Host)
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if logp.IsDebug(metricsetName) {
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log.Debugw("Jolokia request body",
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"body", string(body), "type", "request")
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}
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return &MetricSet{
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BaseMetricSet: base,
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mapping: mapping,
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namespace: config.Namespace,
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http: http,
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log: log,
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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() ([]common.MapStr, error) {
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body, 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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if logp.IsDebug(metricsetName) {
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m.log.Debugw("Jolokia response body",
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"host", m.HostData().Host, "body", string(body), "type", "response")
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}
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events, err := eventMapping(body, m.mapping)
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if err != nil {
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return nil, err
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}
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// Set dynamic namespace.
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var errs multierror.Errors
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for _, event := range events {
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_, err = event.Put(mb.NamespaceKey, m.namespace)
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if err != nil {
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errs = append(errs, err)
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}
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}
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return events, errs.Err()
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}
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