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factory.go
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factory.go
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// Copyright observIQ, Inc.
//
// 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 metricextractprocessor
import (
"context"
"fmt"
"github.com/observiq/bindplane-agent/expr"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/processor"
)
// componentType is the value of the "type" key in configuration.
var componentType = component.MustNewType("metricextract")
const (
// stability is the current state of the processor.
stability = component.StabilityLevelAlpha
)
// NewFactory creates a new factory for the processor.
func NewFactory() processor.Factory {
return processor.NewFactory(
componentType,
createDefaultConfig,
processor.WithLogs(createLogsProcessor, stability),
)
}
// createLogsProcessor creates a log processor.
func createLogsProcessor(_ context.Context, params processor.CreateSettings, cfg component.Config, consumer consumer.Logs) (processor.Logs, error) {
processorCfg, ok := cfg.(*Config)
if !ok {
return nil, fmt.Errorf("invalid config type: %+v", cfg)
}
if processorCfg.isOTTL() {
return createOTTLProcessor(params, processorCfg, consumer)
}
return createExprProcessor(params, processorCfg, consumer)
}
func createExprProcessor(params processor.CreateSettings, cfg *Config, consumer consumer.Logs) (processor.Logs, error) {
match, err := expr.CreateBoolExpression(cfg.exprMatchExpression())
if err != nil {
return nil, fmt.Errorf("invalid match expression: %w", err)
}
attrs, err := expr.CreateExpressionMap(cfg.Attributes)
if err != nil {
return nil, fmt.Errorf("invalid attribute expression: %w", err)
}
value, err := expr.CreateValueExpression(cfg.Extract)
if err != nil {
return nil, fmt.Errorf("invalid extract expression: %w", err)
}
return newExprExtractProcessor(cfg, consumer, match, value, attrs, params.Logger), nil
}
func createOTTLProcessor(params processor.CreateSettings, cfg *Config, consumer consumer.Logs) (processor.Logs, error) {
match, err := expr.NewOTTLLogRecordCondition(cfg.ottlMatchExpression(), params.TelemetrySettings)
if err != nil {
return nil, fmt.Errorf("invalid ottl_match: %w", err)
}
value, err := expr.NewOTTLLogRecordExpression(cfg.OTTLExtract, params.TelemetrySettings)
if err != nil {
return nil, fmt.Errorf("invalid ottl_extract: %w", err)
}
attrs, err := expr.MakeOTTLAttributeMap(cfg.OTTLAttributes, params.TelemetrySettings, expr.NewOTTLLogRecordExpression)
if err != nil {
return nil, fmt.Errorf("invalid ottl_attributes: %w", err)
}
return newOTTLExtractProcessor(cfg, consumer, match, value, attrs, params.Logger), nil
}