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factory.go
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factory.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 loggingexporter // import "go.opentelemetry.io/collector/exporter/loggingexporter"
import (
"context"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/config"
)
const (
// The value of "type" key in configuration.
typeStr = "logging"
defaultSamplingInitial = 2
defaultSamplingThereafter = 500
)
// NewFactory creates a factory for Logging exporter
func NewFactory() component.ExporterFactory {
return component.NewExporterFactory(
typeStr,
createDefaultConfig,
component.WithTracesExporterAndStabilityLevel(createTracesExporter, component.StabilityLevelInDevelopment),
component.WithMetricsExporterAndStabilityLevel(createMetricsExporter, component.StabilityLevelInDevelopment),
component.WithLogsExporterAndStabilityLevel(createLogsExporter, component.StabilityLevelInDevelopment),
)
}
func createDefaultConfig() config.Exporter {
return &Config{
ExporterSettings: config.NewExporterSettings(config.NewComponentID(typeStr)),
LogLevel: zapcore.InfoLevel,
SamplingInitial: defaultSamplingInitial,
SamplingThereafter: defaultSamplingThereafter,
}
}
func createTracesExporter(_ context.Context, set component.ExporterCreateSettings, config config.Exporter) (component.TracesExporter, error) {
cfg := config.(*Config)
exporterLogger, err := createLogger(cfg)
if err != nil {
return nil, err
}
return newTracesExporter(config, exporterLogger, set)
}
func createMetricsExporter(_ context.Context, set component.ExporterCreateSettings, config config.Exporter) (component.MetricsExporter, error) {
cfg := config.(*Config)
exporterLogger, err := createLogger(cfg)
if err != nil {
return nil, err
}
return newMetricsExporter(config, exporterLogger, set)
}
func createLogsExporter(_ context.Context, set component.ExporterCreateSettings, config config.Exporter) (component.LogsExporter, error) {
cfg := config.(*Config)
exporterLogger, err := createLogger(cfg)
if err != nil {
return nil, err
}
return newLogsExporter(config, exporterLogger, set)
}
func createLogger(cfg *Config) (*zap.Logger, error) {
// We take development config as the base since it matches the purpose
// of logging exporter being used for debugging reasons (so e.g. console encoder)
conf := zap.NewDevelopmentConfig()
conf.Level = zap.NewAtomicLevelAt(cfg.LogLevel)
conf.Sampling = &zap.SamplingConfig{
Initial: cfg.SamplingInitial,
Thereafter: cfg.SamplingThereafter,
}
logginglogger, err := conf.Build()
if err != nil {
return nil, err
}
return logginglogger, nil
}