/
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 exporterhelper
import (
"context"
"github.com/spf13/viper"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config/configerror"
"go.opentelemetry.io/collector/config/configmodels"
)
// FactoryOption apply changes to ExporterOptions.
type FactoryOption func(o *factory)
// CreateDefaultConfig is the equivalent of component.ExporterFactory.CreateDefaultConfig()
type CreateDefaultConfig func() configmodels.Exporter
// CreateTraceExporter is the equivalent of component.ExporterFactory.CreateTraceExporter()
type CreateTraceExporter func(context.Context, component.ExporterCreateParams, configmodels.Exporter) (component.TraceExporter, error)
// CreateMetricsExporter is the equivalent of component.ExporterFactory.CreateMetricsExporter()
type CreateMetricsExporter func(context.Context, component.ExporterCreateParams, configmodels.Exporter) (component.MetricsExporter, error)
// CreateMetricsExporter is the equivalent of component.ExporterFactory.CreateLogsExporter()
type CreateLogsExporter func(context.Context, component.ExporterCreateParams, configmodels.Exporter) (component.LogsExporter, error)
type factory struct {
cfgType configmodels.Type
customUnmarshaler component.CustomUnmarshaler
createDefaultConfig CreateDefaultConfig
createTraceExporter CreateTraceExporter
createMetricsExporter CreateMetricsExporter
createLogsExporter CreateLogsExporter
}
// WithTraces overrides the default "error not supported" implementation for CreateTraceReceiver.
func WithTraces(createTraceExporter CreateTraceExporter) FactoryOption {
return func(o *factory) {
o.createTraceExporter = createTraceExporter
}
}
// WithMetrics overrides the default "error not supported" implementation for CreateMetricsReceiver.
func WithMetrics(createMetricsExporter CreateMetricsExporter) FactoryOption {
return func(o *factory) {
o.createMetricsExporter = createMetricsExporter
}
}
// WithLogs overrides the default "error not supported" implementation for CreateLogsReceiver.
func WithLogs(createLogsExporter CreateLogsExporter) FactoryOption {
return func(o *factory) {
o.createLogsExporter = createLogsExporter
}
}
// WithCustomUnmarshaler implements component.ConfigUnmarshaler.
func WithCustomUnmarshaler(customUnmarshaler component.CustomUnmarshaler) FactoryOption {
return func(o *factory) {
o.customUnmarshaler = customUnmarshaler
}
}
// NewFactory returns a component.ExporterFactory.
func NewFactory(
cfgType configmodels.Type,
createDefaultConfig CreateDefaultConfig,
options ...FactoryOption) component.ExporterFactory {
f := &factory{
cfgType: cfgType,
createDefaultConfig: createDefaultConfig,
}
for _, opt := range options {
opt(f)
}
var ret component.ExporterFactory
if f.customUnmarshaler != nil {
ret = &factoryWithUnmarshaler{f}
} else {
ret = f
}
return ret
}
// Type gets the type of the Exporter config created by this factory.
func (f *factory) Type() configmodels.Type {
return f.cfgType
}
// CreateDefaultConfig creates the default configuration for processor.
func (f *factory) CreateDefaultConfig() configmodels.Exporter {
return f.createDefaultConfig()
}
// CreateTraceExporter creates a component.TraceExporter based on this config.
func (f *factory) CreateTraceExporter(
ctx context.Context,
params component.ExporterCreateParams,
cfg configmodels.Exporter) (component.TraceExporter, error) {
if f.createTraceExporter != nil {
return f.createTraceExporter(ctx, params, cfg)
}
return nil, configerror.ErrDataTypeIsNotSupported
}
// CreateMetricsExporter creates a consumer.MetricsConsumer based on this config.
func (f *factory) CreateMetricsExporter(
ctx context.Context,
params component.ExporterCreateParams,
cfg configmodels.Exporter) (component.MetricsExporter, error) {
if f.createMetricsExporter != nil {
return f.createMetricsExporter(ctx, params, cfg)
}
return nil, configerror.ErrDataTypeIsNotSupported
}
// CreateLogsExporter creates a metrics processor based on this config.
func (f *factory) CreateLogsExporter(
ctx context.Context,
params component.ExporterCreateParams,
cfg configmodels.Exporter,
) (component.LogsExporter, error) {
if f.createLogsExporter != nil {
return f.createLogsExporter(ctx, params, cfg)
}
return nil, configerror.ErrDataTypeIsNotSupported
}
var _ component.ConfigUnmarshaler = (*factoryWithUnmarshaler)(nil)
type factoryWithUnmarshaler struct {
*factory
}
// Unmarshal un-marshals the config using the provided custom unmarshaler.
func (f *factoryWithUnmarshaler) Unmarshal(componentViperSection *viper.Viper, intoCfg interface{}) error {
return f.customUnmarshaler(componentViperSection, intoCfg)
}