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factory.go
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factory.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package googlecloudpubsubreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/googlecloudpubsubreceiver"
import (
"context"
"strings"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/receiver"
"go.opentelemetry.io/collector/receiver/receiverhelper"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/googlecloudpubsubreceiver/internal/metadata"
)
const (
reportTransport = "pubsub"
reportFormatProtobuf = "protobuf"
)
func NewFactory() receiver.Factory {
f := &pubsubReceiverFactory{
receivers: make(map[*Config]*pubsubReceiver),
}
return receiver.NewFactory(
metadata.Type,
f.CreateDefaultConfig,
receiver.WithTraces(f.CreateTracesReceiver, metadata.TracesStability),
receiver.WithMetrics(f.CreateMetricsReceiver, metadata.MetricsStability),
receiver.WithLogs(f.CreateLogsReceiver, metadata.LogsStability),
)
}
type pubsubReceiverFactory struct {
receivers map[*Config]*pubsubReceiver
}
func (factory *pubsubReceiverFactory) CreateDefaultConfig() component.Config {
return &Config{}
}
func (factory *pubsubReceiverFactory) ensureReceiver(params receiver.CreateSettings, config component.Config) (*pubsubReceiver, error) {
receiver := factory.receivers[config.(*Config)]
if receiver != nil {
return receiver, nil
}
rconfig := config.(*Config)
obsrecv, err := receiverhelper.NewObsReport(receiverhelper.ObsReportSettings{
ReceiverID: params.ID,
Transport: reportTransport,
ReceiverCreateSettings: params,
})
if err != nil {
return nil, err
}
receiver = &pubsubReceiver{
logger: params.Logger,
obsrecv: obsrecv,
userAgent: strings.ReplaceAll(rconfig.UserAgent, "{{version}}", params.BuildInfo.Version),
config: rconfig,
}
factory.receivers[config.(*Config)] = receiver
return receiver, nil
}
func (factory *pubsubReceiverFactory) CreateTracesReceiver(
_ context.Context,
params receiver.CreateSettings,
cfg component.Config,
consumer consumer.Traces) (receiver.Traces, error) {
if consumer == nil {
return nil, component.ErrNilNextConsumer
}
err := cfg.(*Config).validateForTrace()
if err != nil {
return nil, err
}
receiver, err := factory.ensureReceiver(params, cfg)
if err != nil {
return nil, err
}
receiver.tracesConsumer = consumer
return receiver, nil
}
func (factory *pubsubReceiverFactory) CreateMetricsReceiver(
_ context.Context,
params receiver.CreateSettings,
cfg component.Config,
consumer consumer.Metrics) (receiver.Metrics, error) {
if consumer == nil {
return nil, component.ErrNilNextConsumer
}
err := cfg.(*Config).validateForMetric()
if err != nil {
return nil, err
}
receiver, err := factory.ensureReceiver(params, cfg)
if err != nil {
return nil, err
}
receiver.metricsConsumer = consumer
return receiver, nil
}
func (factory *pubsubReceiverFactory) CreateLogsReceiver(
_ context.Context,
params receiver.CreateSettings,
cfg component.Config,
consumer consumer.Logs) (receiver.Logs, error) {
if consumer == nil {
return nil, component.ErrNilNextConsumer
}
err := cfg.(*Config).validateForLog()
if err != nil {
return nil, err
}
receiver, err := factory.ensureReceiver(params, cfg)
if err != nil {
return nil, err
}
receiver.logsConsumer = consumer
return receiver, nil
}