/
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 receiverhelper
import (
"context"
"github.com/spf13/viper"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config/configerror"
"go.opentelemetry.io/collector/config/configmodels"
"go.opentelemetry.io/collector/consumer"
)
// FactoryOption apply changes to ReceiverOptions.
type FactoryOption func(o *factory)
// WithCustomUnmarshaler implements component.ConfigUnmarshaler.
func WithCustomUnmarshaler(customUnmarshaler component.CustomUnmarshaler) FactoryOption {
return func(o *factory) {
o.customUnmarshaler = customUnmarshaler
}
}
// WithTraces overrides the default "error not supported" implementation for CreateTraceReceiver.
func WithTraces(createTraceReceiver CreateTraceReceiver) FactoryOption {
return func(o *factory) {
o.createTraceReceiver = createTraceReceiver
}
}
// WithMetrics overrides the default "error not supported" implementation for CreateMetricsReceiver.
func WithMetrics(createMetricsReceiver CreateMetricsReceiver) FactoryOption {
return func(o *factory) {
o.createMetricsReceiver = createMetricsReceiver
}
}
// WithLogs overrides the default "error not supported" implementation for CreateLogsReceiver.
func WithLogs(createLogsReceiver CreateLogsReceiver) FactoryOption {
return func(o *factory) {
o.createLogsReceiver = createLogsReceiver
}
}
// CreateDefaultConfig is the equivalent of component.ReceiverFactory.CreateDefaultConfig()
type CreateDefaultConfig func() configmodels.Receiver
// CreateTraceReceiver is the equivalent of component.ReceiverFactory.CreateTraceReceiver()
type CreateTraceReceiver func(context.Context, component.ReceiverCreateParams, configmodels.Receiver, consumer.TraceConsumer) (component.TraceReceiver, error)
// CreateMetricsReceiver is the equivalent of component.ReceiverFactory.CreateMetricsReceiver()
type CreateMetricsReceiver func(context.Context, component.ReceiverCreateParams, configmodels.Receiver, consumer.MetricsConsumer) (component.MetricsReceiver, error)
// CreateLogsReceiver is the equivalent of component.ReceiverFactory.CreateLogsReceiver()
type CreateLogsReceiver func(context.Context, component.ReceiverCreateParams, configmodels.Receiver, consumer.LogsConsumer) (component.LogsReceiver, error)
type factory struct {
cfgType configmodels.Type
customUnmarshaler component.CustomUnmarshaler
createDefaultConfig CreateDefaultConfig
createTraceReceiver CreateTraceReceiver
createMetricsReceiver CreateMetricsReceiver
createLogsReceiver CreateLogsReceiver
}
// NewFactory returns a component.ReceiverFactory.
func NewFactory(
cfgType configmodels.Type,
createDefaultConfig CreateDefaultConfig,
options ...FactoryOption) component.ReceiverFactory {
f := &factory{
cfgType: cfgType,
createDefaultConfig: createDefaultConfig,
}
for _, opt := range options {
opt(f)
}
var ret component.ReceiverFactory
if f.customUnmarshaler != nil {
ret = &factoryWithUnmarshaler{f}
} else {
ret = f
}
return ret
}
// Type gets the type of the Receiver config created by this factory.
func (f *factory) Type() configmodels.Type {
return f.cfgType
}
// CreateDefaultConfig creates the default configuration for receiver.
func (f *factory) CreateDefaultConfig() configmodels.Receiver {
return f.createDefaultConfig()
}
// CreateTraceReceiver creates a component.TraceReceiver based on this config.
func (f *factory) CreateTraceReceiver(
ctx context.Context,
params component.ReceiverCreateParams,
cfg configmodels.Receiver,
nextConsumer consumer.TraceConsumer) (component.TraceReceiver, error) {
if f.createTraceReceiver != nil {
return f.createTraceReceiver(ctx, params, cfg, nextConsumer)
}
return nil, configerror.ErrDataTypeIsNotSupported
}
// CreateMetricsReceiver creates a consumer.MetricsConsumer based on this config.
func (f *factory) CreateMetricsReceiver(
ctx context.Context,
params component.ReceiverCreateParams,
cfg configmodels.Receiver,
nextConsumer consumer.MetricsConsumer) (component.MetricsReceiver, error) {
if f.createMetricsReceiver != nil {
return f.createMetricsReceiver(ctx, params, cfg, nextConsumer)
}
return nil, configerror.ErrDataTypeIsNotSupported
}
// CreateLogsReceiver creates a metrics processor based on this config.
func (f *factory) CreateLogsReceiver(
ctx context.Context,
params component.ReceiverCreateParams,
cfg configmodels.Receiver,
nextConsumer consumer.LogsConsumer,
) (component.LogsReceiver, error) {
if f.createLogsReceiver != nil {
return f.createLogsReceiver(ctx, params, cfg, nextConsumer)
}
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)
}