/
factory.go
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/
factory.go
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// Copyright The OpenTelemetry Authors
//
// Licensed 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 prometheusexporter
import (
"context"
"time"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/exporter/exporterhelper"
)
const (
// The value of "type" key in configuration.
typeStr = "prometheus"
)
// NewFactory creates a new Prometheus exporter factory.
func NewFactory() component.ExporterFactory {
return exporterhelper.NewFactory(
typeStr,
createDefaultConfig,
exporterhelper.WithMetrics(createMetricsExporter))
}
func createDefaultConfig() config.Exporter {
return &Config{
ExporterSettings: config.NewExporterSettings(config.NewID(typeStr)),
ConstLabels: map[string]string{},
SendTimestamps: false,
MetricExpiration: time.Minute * 5,
}
}
func createMetricsExporter(
_ context.Context,
set component.ExporterCreateSettings,
cfg config.Exporter,
) (component.MetricsExporter, error) {
pcfg := cfg.(*Config)
prometheus, err := newPrometheusExporter(pcfg, set)
if err != nil {
return nil, err
}
exporter, err := exporterhelper.NewMetricsExporter(
cfg,
set,
prometheus.ConsumeMetrics,
exporterhelper.WithCapabilities(consumer.Capabilities{MutatesData: false}),
exporterhelper.WithStart(prometheus.Start),
exporterhelper.WithShutdown(prometheus.Shutdown),
exporterhelper.WithResourceToTelemetryConversion(pcfg.ResourceToTelemetrySettings),
)
if err != nil {
return nil, err
}
return &wrapMetricsExpoter{
MetricsExporter: exporter,
exporter: prometheus,
}, nil
}
type wrapMetricsExpoter struct {
component.MetricsExporter
exporter *prometheusExporter
}