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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 carbonreceiver
import (
"context"
"fmt"
"github.com/open-telemetry/opentelemetry-collector/config/configerror"
"github.com/open-telemetry/opentelemetry-collector/config/configmodels"
"github.com/open-telemetry/opentelemetry-collector/consumer"
"github.com/open-telemetry/opentelemetry-collector/receiver"
"github.com/spf13/viper"
"go.uber.org/zap"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/carbonreceiver/protocol"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/carbonreceiver/transport"
)
// This file implements factory for Carbon receiver.
const (
// The value of "type" key in configuration.
typeStr = "carbon"
)
// Factory is the factory for carbon receiver.
type Factory struct {
}
var _ receiver.Factory = (*Factory)(nil)
// Type gets the type of the Receiver config created by this factory.
func (f *Factory) Type() string {
return typeStr
}
// CustomUnmarshaler returns the custom function to handle the special settings
// used on the receiver.
func (f *Factory) CustomUnmarshaler() receiver.CustomUnmarshaler {
return func(v *viper.Viper, viperKey string, sourceViperSection *viper.Viper, intoCfg interface{}) error {
if sourceViperSection == nil {
// The section is empty nothing to do, using the default config.
return nil
}
// Unmarshal but not exact yet so the different keys under config do not
// trigger errors, this is needed so that the types of protocol and transport
// are read.
if err := sourceViperSection.Unmarshal(intoCfg); err != nil {
return err
}
// Unmarshal the protocol, so the type of config can be properly set.
rCfg := intoCfg.(*Config)
vParserCfg := sourceViperSection.Sub(parserConfigSection)
if vParserCfg != nil {
if err := protocol.LoadParserConfig(vParserCfg, rCfg.Parser); err != nil {
return fmt.Errorf(
"error on %q section for %s: %v",
parserConfigSection,
rCfg.Name(),
err)
}
}
// Unmarshal exact to validate the config keys.
if err := sourceViperSection.UnmarshalExact(intoCfg); err != nil {
return err
}
return nil
}
}
// CreateDefaultConfig creates the default configuration for Carbon receiver.
func (f *Factory) CreateDefaultConfig() configmodels.Receiver {
return &Config{
ReceiverSettings: configmodels.ReceiverSettings{
TypeVal: typeStr,
NameVal: typeStr,
Endpoint: "localhost:2003",
},
Transport: "tcp",
TCPIdleTimeout: transport.TCPIdleTimeoutDefault,
Parser: &protocol.Config{
Type: "plaintext",
Config: &protocol.PlaintextParser{},
},
}
}
// CreateTraceReceiver creates a trace receiver based on provided config.
func (f *Factory) CreateTraceReceiver(
ctx context.Context,
logger *zap.Logger,
cfg configmodels.Receiver,
consumer consumer.TraceConsumer,
) (receiver.TraceReceiver, error) {
return nil, configerror.ErrDataTypeIsNotSupported
}
// CreateMetricsReceiver creates a metrics receiver based on provided config.
func (f *Factory) CreateMetricsReceiver(
logger *zap.Logger,
cfg configmodels.Receiver,
consumer consumer.MetricsConsumer,
) (receiver.MetricsReceiver, error) {
rCfg := cfg.(*Config)
return New(logger, *rCfg, consumer)
}