youtubebeat/vendor/github.com/elastic/beats/metricbeat/helper/prometheus/module.go

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2018-11-18 11:08:38 +01:00
// 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 prometheus
import (
"github.com/elastic/beats/metricbeat/mb"
"github.com/elastic/beats/metricbeat/mb/parse"
)
const (
defaultScheme = "http"
defaultPath = "/metrics"
)
var (
// HostParser validates Prometheus URLs
HostParser = parse.URLHostParserBuilder{
DefaultScheme: defaultScheme,
DefaultPath: defaultPath,
}.Build()
)
// MetricSetBuilder returns a builder function for a new Prometheus metricset using the given mapping
func MetricSetBuilder(mapping *MetricsMapping) func(base mb.BaseMetricSet) (mb.MetricSet, error) {
return func(base mb.BaseMetricSet) (mb.MetricSet, error) {
prometheus, err := NewPrometheusClient(base)
if err != nil {
return nil, err
}
return &prometheusMetricSet{
BaseMetricSet: base,
prometheus: prometheus,
mapping: mapping,
}, nil
}
}
type prometheusMetricSet struct {
mb.BaseMetricSet
prometheus Prometheus
mapping *MetricsMapping
}
func (m *prometheusMetricSet) Fetch(r mb.ReporterV2) {
m.prometheus.ReportProcessedMetrics(m.mapping, r)
}