opentelemetry-collector/component/processor.go

117 lines
4.0 KiB
Go

// 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 component
import (
"context"
"go.uber.org/zap"
"go.opentelemetry.io/collector/config/configmodels"
"go.opentelemetry.io/collector/consumer"
)
// Processor defines the common functions that must be implemented by TracesProcessor
// and MetricsProcessor.
type Processor interface {
Component
// GetCapabilities must return the capabilities of the processor.
GetCapabilities() ProcessorCapabilities
}
// TracesProcessor is a processor that can consume traces.
type TracesProcessor interface {
Processor
consumer.Traces
}
// MetricsProcessor is a processor that can consume metrics.
type MetricsProcessor interface {
Processor
consumer.Metrics
}
// LogsProcessor is a processor that can consume logs.
type LogsProcessor interface {
Processor
consumer.Logs
}
// ProcessorCapabilities describes the capabilities of a Processor.
type ProcessorCapabilities struct {
// MutatesConsumedData is set to true if Consume* function of the
// processor modifies the input TraceData or MetricsData argument.
// Processors which modify the input data MUST set this flag to true. If the processor
// does not modify the data it MUST set this flag to false. If the processor creates
// a copy of the data before modifying then this flag can be safely set to false.
MutatesConsumedData bool
}
// ProcessorCreateParams is passed to Create* functions in ProcessorFactory.
type ProcessorCreateParams struct {
// Logger that the factory can use during creation and can pass to the created
// component to be used later as well.
Logger *zap.Logger
// ApplicationStartInfo can be used by components for informational purposes
ApplicationStartInfo ApplicationStartInfo
}
// ProcessorFactory is factory interface for processors. This is the
// new factory type that can create new style processors.
type ProcessorFactory interface {
Factory
// CreateDefaultConfig creates the default configuration for the Processor.
// This method can be called multiple times depending on the pipeline
// configuration and should not cause side-effects that prevent the creation
// of multiple instances of the Processor.
// The object returned by this method needs to pass the checks implemented by
// 'configcheck.ValidateConfig'. It is recommended to have such check in the
// tests of any implementation of the Factory interface.
CreateDefaultConfig() configmodels.Processor
// CreateTraceProcessor creates a trace processor based on this config.
// If the processor type does not support tracing or if the config is not valid
// error will be returned instead.
CreateTracesProcessor(
ctx context.Context,
params ProcessorCreateParams,
cfg configmodels.Processor,
nextConsumer consumer.Traces,
) (TracesProcessor, error)
// CreateMetricsProcessor creates a metrics processor based on this config.
// If the processor type does not support metrics or if the config is not valid
// error will be returned instead.
CreateMetricsProcessor(
ctx context.Context,
params ProcessorCreateParams,
cfg configmodels.Processor,
nextConsumer consumer.Metrics,
) (MetricsProcessor, error)
// CreateLogsProcessor creates a processor based on the config.
// If the processor type does not support logs or if the config is not valid
// error will be returned instead.
CreateLogsProcessor(
ctx context.Context,
params ProcessorCreateParams,
cfg configmodels.Processor,
nextConsumer consumer.Logs,
) (LogsProcessor, error)
}