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factory.go
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factory.go
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// Copyright 2019, 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 collectdreceiver
import (
"context"
"fmt"
"strings"
"time"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config/configmodels"
"go.opentelemetry.io/collector/config/confignet"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/receiver/receiverhelper"
)
// This file implements factory for CollectD receiver.
const (
typeStr = "collectd"
defaultBindEndpoint = "localhost:8081"
defaultTimeout = time.Second * 30
defaultEncodingFormat = "json"
)
// NewFactory creates a factory for collectd receiver.
func NewFactory() component.ReceiverFactory {
return receiverhelper.NewFactory(
typeStr,
createDefaultConfig,
receiverhelper.WithMetrics(createMetricsReceiver))
}
func createDefaultConfig() configmodels.Receiver {
return &Config{
ReceiverSettings: configmodels.ReceiverSettings{
TypeVal: configmodels.Type(typeStr),
NameVal: typeStr,
},
TCPAddr: confignet.TCPAddr{
Endpoint: defaultBindEndpoint,
},
Timeout: defaultTimeout,
Encoding: defaultEncodingFormat,
}
}
func createMetricsReceiver(
_ context.Context,
params component.ReceiverCreateParams,
cfg configmodels.Receiver,
nextConsumer consumer.MetricsConsumer,
) (component.MetricsReceiver, error) {
c := cfg.(*Config)
c.Encoding = strings.ToLower(c.Encoding)
// CollectD receiver only supports JSON encoding. We expose a config option
// to make it explicit and obvious to the users.
if c.Encoding != defaultEncodingFormat {
return nil, fmt.Errorf(
"CollectD only support JSON encoding format. %s is not supported",
c.Encoding,
)
}
return newCollectdReceiver(params.Logger, c.Endpoint, c.Timeout, c.AttributesPrefix, nextConsumer)
}