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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package config // import "go.opentelemetry.io/contrib/config"
import (
"context"
"errors"
"fmt"
"net/url"
"time"
"go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp"
"go.opentelemetry.io/otel/exporters/stdout/stdoutlog"
"go.opentelemetry.io/otel/log"
"go.opentelemetry.io/otel/log/noop"
sdklog "go.opentelemetry.io/otel/sdk/log"
"go.opentelemetry.io/otel/sdk/resource"
)
func loggerProvider(cfg configOptions, res *resource.Resource) (log.LoggerProvider, shutdownFunc, error) {
if cfg.opentelemetryConfig.LoggerProvider == nil {
return noop.NewLoggerProvider(), noopShutdown, nil
}
opts := []sdklog.LoggerProviderOption{
sdklog.WithResource(res),
}
var errs []error
for _, processor := range cfg.opentelemetryConfig.LoggerProvider.Processors {
sp, err := logProcessor(cfg.ctx, processor)
if err == nil {
opts = append(opts, sdklog.WithProcessor(sp))
} else {
errs = append(errs, err)
}
}
if len(errs) > 0 {
return noop.NewLoggerProvider(), noopShutdown, errors.Join(errs...)
}
lp := sdklog.NewLoggerProvider(opts...)
return lp, lp.Shutdown, nil
}
func logProcessor(ctx context.Context, processor LogRecordProcessor) (sdklog.Processor, error) {
if processor.Batch != nil && processor.Simple != nil {
return nil, errors.New("must not specify multiple log processor type")
}
if processor.Batch != nil {
exp, err := logExporter(ctx, processor.Batch.Exporter)
if err != nil {
return nil, err
}
return batchLogProcessor(processor.Batch, exp)
}
if processor.Simple != nil {
exp, err := logExporter(ctx, processor.Simple.Exporter)
if err != nil {
return nil, err
}
return sdklog.NewSimpleProcessor(exp), nil
}
return nil, fmt.Errorf("unsupported log processor type, must be one of simple or batch")
}
func logExporter(ctx context.Context, exporter LogRecordExporter) (sdklog.Exporter, error) {
if exporter.Console != nil && exporter.OTLP != nil {
return nil, errors.New("must not specify multiple exporters")
}
if exporter.Console != nil {
return stdoutlog.New(
stdoutlog.WithPrettyPrint(),
)
}
if exporter.OTLP != nil && exporter.OTLP.Protocol != nil {
switch *exporter.OTLP.Protocol {
case protocolProtobufHTTP:
return otlpHTTPLogExporter(ctx, exporter.OTLP)
default:
return nil, fmt.Errorf("unsupported protocol %q", *exporter.OTLP.Protocol)
}
}
return nil, errors.New("no valid log exporter")
}
func batchLogProcessor(blp *BatchLogRecordProcessor, exp sdklog.Exporter) (*sdklog.BatchProcessor, error) {
var opts []sdklog.BatchProcessorOption
if blp.ExportTimeout != nil {
if *blp.ExportTimeout < 0 {
return nil, fmt.Errorf("invalid export timeout %d", *blp.ExportTimeout)
}
opts = append(opts, sdklog.WithExportTimeout(time.Millisecond*time.Duration(*blp.ExportTimeout)))
}
if blp.MaxExportBatchSize != nil {
if *blp.MaxExportBatchSize < 0 {
return nil, fmt.Errorf("invalid batch size %d", *blp.MaxExportBatchSize)
}
opts = append(opts, sdklog.WithExportMaxBatchSize(*blp.MaxExportBatchSize))
}
if blp.MaxQueueSize != nil {
if *blp.MaxQueueSize < 0 {
return nil, fmt.Errorf("invalid queue size %d", *blp.MaxQueueSize)
}
opts = append(opts, sdklog.WithMaxQueueSize(*blp.MaxQueueSize))
}
if blp.ScheduleDelay != nil {
if *blp.ScheduleDelay < 0 {
return nil, fmt.Errorf("invalid schedule delay %d", *blp.ScheduleDelay)
}
opts = append(opts, sdklog.WithExportInterval(time.Millisecond*time.Duration(*blp.ScheduleDelay)))
}
return sdklog.NewBatchProcessor(exp, opts...), nil
}
func otlpHTTPLogExporter(ctx context.Context, otlpConfig *OTLP) (sdklog.Exporter, error) {
var opts []otlploghttp.Option
if otlpConfig.Endpoint != nil {
u, err := url.ParseRequestURI(*otlpConfig.Endpoint)
if err != nil {
return nil, err
}
opts = append(opts, otlploghttp.WithEndpoint(u.Host))
if u.Scheme == "http" {
opts = append(opts, otlploghttp.WithInsecure())
}
if len(u.Path) > 0 {
opts = append(opts, otlploghttp.WithURLPath(u.Path))
}
}
if otlpConfig.Compression != nil {
switch *otlpConfig.Compression {
case compressionGzip:
opts = append(opts, otlploghttp.WithCompression(otlploghttp.GzipCompression))
case compressionNone:
opts = append(opts, otlploghttp.WithCompression(otlploghttp.NoCompression))
default:
return nil, fmt.Errorf("unsupported compression %q", *otlpConfig.Compression)
}
}
if otlpConfig.Timeout != nil && *otlpConfig.Timeout > 0 {
opts = append(opts, otlploghttp.WithTimeout(time.Millisecond*time.Duration(*otlpConfig.Timeout)))
}
if len(otlpConfig.Headers) > 0 {
opts = append(opts, otlploghttp.WithHeaders(toStringMap(otlpConfig.Headers)))
}
return otlploghttp.New(ctx, opts...)
}
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