ob-col/exporter/prometheusexporter/config.go

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package prometheusexporter // import "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/prometheusexporter"

import (
	"time"

	"github.com/prometheus/client_golang/prometheus"
	"go.opentelemetry.io/collector/component"
	"go.opentelemetry.io/collector/config/confighttp"

	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/resourcetotelemetry"
)

// Config defines configuration for Prometheus exporter.
type Config struct {
	confighttp.HTTPServerSettings `mapstructure:",squash"`

	// Namespace if set, exports metrics under the provided value.
	Namespace string `mapstructure:"namespace"`

	// ConstLabels are values that are applied for every exported metric.
	ConstLabels prometheus.Labels `mapstructure:"const_labels"`

	// SendTimestamps will send the underlying scrape timestamp with the export
	SendTimestamps bool `mapstructure:"send_timestamps"`

	// MetricExpiration defines how long metrics are kept without updates
	MetricExpiration time.Duration `mapstructure:"metric_expiration"`

	// ResourceToTelemetrySettings defines configuration for converting resource attributes to metric labels.
	ResourceToTelemetrySettings resourcetotelemetry.Settings `mapstructure:"resource_to_telemetry_conversion"`

	// EnableOpenMetrics enables the use of the OpenMetrics encoding option for the prometheus exporter.
	EnableOpenMetrics bool `mapstructure:"enable_open_metrics"`

	// AddMetricSuffixes controls whether suffixes are added to metric names. Defaults to true.
	AddMetricSuffixes bool `mapstructure:"add_metric_suffixes"`
}

var _ component.Config = (*Config)(nil)

// Validate checks if the exporter configuration is valid
func (cfg *Config) Validate() error {
	return nil
}