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receivers.go
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receivers.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://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 configunmarshaler // import "go.opentelemetry.io/collector/service/internal/configunmarshaler"
import (
"reflect"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/confmap"
)
// receiversKeyName is the configuration key name for receivers section.
const receiversKeyName = "receivers"
type Receivers struct {
recvs map[component.ID]component.ReceiverConfig
factories map[component.Type]component.ReceiverFactory
}
func NewReceivers(factories map[component.Type]component.ReceiverFactory) *Receivers {
return &Receivers{factories: factories}
}
func (r *Receivers) Unmarshal(conf *confmap.Conf) error {
rawRecvs := make(map[component.ID]map[string]interface{})
if err := conf.Unmarshal(&rawRecvs, confmap.WithErrorUnused()); err != nil {
return err
}
// Prepare resulting map.
r.recvs = make(map[component.ID]component.ReceiverConfig)
// Iterate over input map and create a config for each.
for id, value := range rawRecvs {
// Find receiver factory based on "type" that we read from config source.
factory := r.factories[id.Type()]
if factory == nil {
return errorUnknownType(receiversKeyName, id, reflect.ValueOf(r.factories).MapKeys())
}
// Create the default config for this receiver.
receiverCfg := factory.CreateDefaultConfig()
receiverCfg.SetIDName(id.Name())
// Now that the default config struct is created we can Unmarshal into it,
// and it will apply user-defined config on top of the default.
if err := component.UnmarshalReceiverConfig(confmap.NewFromStringMap(value), receiverCfg); err != nil {
return errorUnmarshalError(receiversKeyName, id, err)
}
r.recvs[id] = receiverCfg
}
return nil
}
func (r *Receivers) GetReceivers() map[component.ID]component.ReceiverConfig {
return r.recvs
}