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receiver.go
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receiver.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:https://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 kafkametricsreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kafkametricsreceiver"
import (
"context"
"fmt"
"github.com/Shopify/sarama"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/receiver/scraperhelper"
"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/kafkaexporter"
)
const (
brokersScraperName = "brokers"
topicsScraperName = "topics"
consumersScraperName = "consumers"
)
type createKafkaScraper func(context.Context, Config, *sarama.Config, component.ReceiverCreateSettings) (scraperhelper.Scraper, error)
var (
allScrapers = map[string]createKafkaScraper{
brokersScraperName: createBrokerScraper,
topicsScraperName: createTopicsScraper,
consumersScraperName: createConsumerScraper,
}
)
var newMetricsReceiver = func(
ctx context.Context,
config Config,
params component.ReceiverCreateSettings,
consumer consumer.Metrics,
) (component.MetricsReceiver, error) {
sc := sarama.NewConfig()
sc.ClientID = config.ClientID
if config.ProtocolVersion != "" {
version, err := sarama.ParseKafkaVersion(config.ProtocolVersion)
if err != nil {
return nil, err
}
sc.Version = version
}
if err := kafkaexporter.ConfigureAuthentication(config.Authentication, sc); err != nil {
return nil, err
}
scraperControllerOptions := make([]scraperhelper.ScraperControllerOption, 0, len(config.Scrapers))
for _, scraper := range config.Scrapers {
if s, ok := allScrapers[scraper]; ok {
s, err := s(ctx, config, sc, params)
if err != nil {
return nil, err
}
scraperControllerOptions = append(scraperControllerOptions, scraperhelper.AddScraper(s))
continue
}
return nil, fmt.Errorf("no scraper found for key: %s", scraper)
}
return scraperhelper.NewScraperControllerReceiver(
&config.ScraperControllerSettings,
params,
consumer,
scraperControllerOptions...,
)
}