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filelog.go
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filelog.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 filelogreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/filelogreceiver"
import (
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config"
"gopkg.in/yaml.v2"
"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/adapter"
"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator"
"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/stanza/operator/input/file"
)
const (
typeStr = "filelog"
stability = component.StabilityLevelAlpha
)
// NewFactory creates a factory for filelog receiver
func NewFactory() component.ReceiverFactory {
return adapter.NewFactory(ReceiverType{}, stability)
}
// ReceiverType implements stanza.LogReceiverType
// to create a file tailing receiver
type ReceiverType struct{}
// Type is the receiver type
func (f ReceiverType) Type() config.Type {
return typeStr
}
// CreateDefaultConfig creates a config with type and version
func (f ReceiverType) CreateDefaultConfig() config.Receiver {
return createDefaultConfig()
}
func createDefaultConfig() *FileLogConfig {
return &FileLogConfig{
BaseConfig: adapter.BaseConfig{
ReceiverSettings: config.NewReceiverSettings(config.NewComponentID(typeStr)),
Operators: adapter.OperatorConfigs{},
Converter: adapter.ConverterConfig{},
},
Input: adapter.InputConfig{},
}
}
// BaseConfig gets the base config from config, for now
func (f ReceiverType) BaseConfig(cfg config.Receiver) adapter.BaseConfig {
return cfg.(*FileLogConfig).BaseConfig
}
// FileLogConfig defines configuration for the filelog receiver
type FileLogConfig struct {
adapter.BaseConfig `mapstructure:",squash"`
Input adapter.InputConfig `mapstructure:",remain"`
}
// DecodeInputConfig unmarshals the input operator
func (f ReceiverType) DecodeInputConfig(cfg config.Receiver) (*operator.Config, error) {
logConfig := cfg.(*FileLogConfig)
yamlBytes, _ := yaml.Marshal(logConfig.Input)
inputCfg := file.NewConfig("file_input")
if err := yaml.Unmarshal(yamlBytes, &inputCfg); err != nil {
return nil, err
}
return &operator.Config{Builder: inputCfg}, nil
}