opentelemetry_collector/components.go

// Copyright 2019 OpenTelemetry Authors
// Modifications Copyright 2020 Google Inc. All rights reserved.
//
// 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 main

import (
	"github.com/pkg/errors"

	"go.opentelemetry.io/collector/component"

	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/googlecloudexporter"
	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourceprocessor"

	"github.com/googlecloudplatform/appengine-sidecars-docker/opentelemetry_collector/receiver/dockerstats"
	"github.com/googlecloudplatform/appengine-sidecars-docker/opentelemetry_collector/receiver/nginxreceiver"
	"github.com/googlecloudplatform/appengine-sidecars-docker/opentelemetry_collector/receiver/vmagereceiver"
)

func appendError(err error, newerr error) error {
	if err == nil {
		return newerr
	}
	return errors.Wrap(err, newerr.Error())
}

func components() (component.Factories, error) {
	var errs error

	receivers, err := component.MakeReceiverFactoryMap(
		dockerstats.NewFactory(),
		nginxreceiver.NewFactory(),
		vmagereceiver.NewFactory(),
	)
	if err != nil {
		errs = appendError(errs, err)
	}

	exporters, err := component.MakeExporterFactoryMap(
		googlecloudexporter.NewFactory(),
	)
	if err != nil {
		errs = appendError(errs, err)
	}

	processors, err := component.MakeProcessorFactoryMap(
		resourceprocessor.NewFactory(),
	)
	if err != nil {
		errs = appendError(errs, err)
	}

	factories := component.Factories{
		Receivers:  receivers,
		Processors: processors,
		Exporters:  exporters,
	}

	return factories, errs
}