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prometheus.go
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prometheus.go
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// Copyright 2019, 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"
"errors"
// TODO: once this repository has been transferred to the
// official census-ecosystem location, update this import path.
"github.com/orijtech/prometheus-go-metrics-exporter"
"github.com/open-telemetry/opentelemetry-collector/consumer"
"github.com/open-telemetry/opentelemetry-collector/consumer/consumerdata"
"github.com/open-telemetry/opentelemetry-collector/exporter/exporterhelper"
)
var errBlankPrometheusAddress = errors.New("expecting a non-blank address to run the Prometheus metrics handler")
type prometheusExporter struct {
name string
exporter *prometheus.Exporter
shutdown exporterhelper.Shutdown
}
var _ consumer.MetricsConsumer = (*prometheusExporter)(nil)
func (pe *prometheusExporter) ConsumeMetricsData(ctx context.Context, md consumerdata.MetricsData) error {
for _, metric := range md.Metrics {
_ = pe.exporter.ExportMetric(ctx, md.Node, md.Resource, metric)
}
return nil
}
func (pe *prometheusExporter) Name() string {
return pe.name
}
// Shutdown stops the exporter and is invoked during shutdown.
func (pe *prometheusExporter) Shutdown() error {
return pe.shutdown()
}