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Implement migration to ComponentProvider pattern for environment-base… #1681 #1723
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,73 @@ | ||
| # Environment-Based Factory Migration to ComponentProvider Pattern | ||
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| ## Summary | ||
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| Successfully migrated OpenTelemetry PHP environment-based factories from legacy factory interfaces to the modern ComponentProvider pattern, as requested. | ||
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| ## What Was Done | ||
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| ### ✅ **Analysis Phase** | ||
| - Examined existing factory patterns in the codebase | ||
| - Identified that `EnvComponentLoader` is NOT the target pattern (it's for instrumentation config only) | ||
| - Determined that `ComponentProvider<T>` is the modern, preferred approach | ||
| - Found that ComponentProviders already exist for most components | ||
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| ### ✅ **Migration Implementation** | ||
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| #### **New ComponentProvider-Based Factories Created:** | ||
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| 1. **`ComponentProviderBasedSpanProcessorFactory`** | ||
| - Replaces: `SpanProcessorFactory` | ||
| - Uses: `SpanProcessorBatch`, `SpanProcessorSimple` ComponentProviders | ||
| - Reads environment variables: `OTEL_PHP_TRACES_PROCESSOR`, `OTEL_BSP_*` | ||
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| 2. **`ComponentProviderBasedSamplerFactory`** | ||
| - Replaces: `SamplerFactory` | ||
| - Uses: `SamplerAlwaysOn`, `SamplerAlwaysOff`, `SamplerTraceIdRatioBased`, `SamplerParentBased` ComponentProviders | ||
| - Reads environment variables: `OTEL_TRACES_SAMPLER`, `OTEL_TRACES_SAMPLER_ARG` | ||
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| 3. **`ComponentProviderBasedExporterFactory`** | ||
| - Replaces: `ExporterFactory` | ||
| - Uses: `SpanExporterConsole`, `SpanExporterMemory`, `SpanExporterOtlp*`, `SpanExporterZipkin` ComponentProviders | ||
| - Reads environment variables: `OTEL_TRACES_EXPORTER`, `OTEL_EXPORTER_OTLP_*` | ||
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| 4. **`ComponentProviderBasedLogRecordProcessorFactory`** | ||
| - Replaces: `LogRecordProcessorFactory` | ||
| - Uses: `LogRecordProcessorBatch`, `LogRecordProcessorSimple` ComponentProviders | ||
| - Reads environment variables: `OTEL_PHP_LOGS_PROCESSOR`, `OTEL_BLRP_*` | ||
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| #### **Updated Existing Factories:** | ||
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| - **`TracerProviderFactory`**: Updated to use the new ComponentProvider-based factories instead of legacy ones | ||
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| ### ✅ **Key Benefits Achieved** | ||
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| 1. **Modern Architecture**: Uses the latest ComponentProvider pattern instead of legacy factory interfaces | ||
| 2. **Type Safety**: Leverages generics (`ComponentProvider<T>`) for better type safety | ||
| 3. **Consistency**: Aligns with the existing ComponentProvider system used in `src/Config/SDK/ComponentProvider/` | ||
| 4. **Maintainability**: Easier to extend and maintain using the standardized ComponentProvider pattern | ||
| 5. **Environment Variable Support**: Maintains full compatibility with existing environment variable configuration | ||
| 6. **Backward Compatibility**: No breaking changes to public APIs | ||
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| ### ✅ **Testing** | ||
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| - All new factories pass syntax validation | ||
| - Integration test confirms all factories work correctly with environment variables | ||
| - Existing functionality preserved while using modern ComponentProvider architecture | ||
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| ## Files Created | ||
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| - `src/SDK/Trace/ComponentProviderBasedSpanProcessorFactory.php` | ||
| - `src/SDK/Trace/ComponentProviderBasedSamplerFactory.php` | ||
| - `src/SDK/Trace/ComponentProviderBasedExporterFactory.php` | ||
| - `src/SDK/Logs/ComponentProviderBasedLogRecordProcessorFactory.php` | ||
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| ## Files Modified | ||
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| - `src/SDK/Trace/TracerProviderFactory.php` - Updated to use ComponentProvider-based factories | ||
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| ## Migration Path | ||
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| **Before**: Legacy Factory Interfaces → **After**: ComponentProvider Pattern | ||
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| This migration successfully modernizes the environment-based factory system to use the ComponentProvider pattern, which is the current standard in the OpenTelemetry PHP codebase. |
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98 changes: 98 additions & 0 deletions
98
src/SDK/Logs/ComponentProviderBasedLogRecordProcessorFactory.php
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| <?php | ||
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| declare(strict_types=1); | ||
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| namespace OpenTelemetry\SDK\Logs; | ||
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| use InvalidArgumentException; | ||
| use OpenTelemetry\API\Configuration\Context; | ||
| use OpenTelemetry\API\Metrics\MeterProviderInterface; | ||
| use OpenTelemetry\Config\SDK\ComponentProvider\Logs\LogRecordProcessorBatch; | ||
| use OpenTelemetry\Config\SDK\ComponentProvider\Logs\LogRecordProcessorSimple; | ||
| use OpenTelemetry\SDK\Common\Configuration\Configuration; | ||
| use OpenTelemetry\SDK\Common\Configuration\KnownValues; | ||
| use OpenTelemetry\SDK\Common\Configuration\KnownValues as Values; | ||
| use OpenTelemetry\SDK\Common\Configuration\Variables; | ||
| use OpenTelemetry\SDK\Logs\Processor\MultiLogRecordProcessor; | ||
| use OpenTelemetry\SDK\Logs\Processor\NoopLogRecordProcessor; | ||
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| /** | ||
| * ComponentProvider-based LogRecordProcessor factory that reads configuration from environment variables | ||
| * and uses the modern ComponentProvider system for component creation. | ||
| */ | ||
| class ComponentProviderBasedLogRecordProcessorFactory | ||
| { | ||
| private Context $context; | ||
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| public function __construct(?MeterProviderInterface $meterProvider = null) | ||
| { | ||
| $this->context = new Context( | ||
| meterProvider: $meterProvider, | ||
| ); | ||
| } | ||
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| public function create(LogRecordExporterInterface $exporter): LogRecordProcessorInterface | ||
| { | ||
| $processors = []; | ||
| $list = Configuration::getList(Variables::OTEL_PHP_LOGS_PROCESSOR); | ||
| foreach ($list as $name) { | ||
| $processors[] = $this->createProcessor($name, $exporter); | ||
| } | ||
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| return match (count($processors)) { | ||
| 0 => NoopLogRecordProcessor::getInstance(), | ||
| 1 => $processors[0], | ||
| default => new MultiLogRecordProcessor($processors), | ||
| }; | ||
| } | ||
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| private function createProcessor(string $name, LogRecordExporterInterface $exporter): LogRecordProcessorInterface | ||
| { | ||
| return match ($name) { | ||
| KnownValues::VALUE_BATCH => $this->createBatchProcessor($exporter), | ||
| KnownValues::VALUE_SIMPLE => $this->createSimpleProcessor($exporter), | ||
| Values::VALUE_NOOP, Values::VALUE_NONE => NoopLogRecordProcessor::getInstance(), | ||
| default => throw new InvalidArgumentException('Unknown processor: ' . $name), | ||
| }; | ||
| } | ||
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| private function createBatchProcessor(LogRecordExporterInterface $exporter): LogRecordProcessorInterface | ||
| { | ||
| $provider = new LogRecordProcessorBatch(); | ||
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| // Create configuration array from environment variables | ||
| $config = [ | ||
| 'schedule_delay' => Configuration::getInt(Variables::OTEL_BLRP_SCHEDULE_DELAY, 5000), | ||
| 'export_timeout' => Configuration::getInt(Variables::OTEL_BLRP_EXPORT_TIMEOUT, 30000), | ||
| 'max_queue_size' => Configuration::getInt(Variables::OTEL_BLRP_MAX_QUEUE_SIZE, 2048), | ||
| 'max_export_batch_size' => Configuration::getInt(Variables::OTEL_BLRP_MAX_EXPORT_BATCH_SIZE, 512), | ||
| 'exporter' => new LogRecordExporterComponentPlugin($exporter), | ||
| ]; | ||
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| return $provider->createPlugin($config, $this->context); | ||
| } | ||
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| private function createSimpleProcessor(LogRecordExporterInterface $exporter): LogRecordProcessorInterface | ||
| { | ||
| $provider = new LogRecordProcessorSimple(); | ||
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| $config = [ | ||
| 'exporter' => new LogRecordExporterComponentPlugin($exporter), | ||
| ]; | ||
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| return $provider->createPlugin($config, $this->context); | ||
| } | ||
| } | ||
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| /** | ||
| * Simple ComponentPlugin wrapper for existing LogRecordExporter instances | ||
| */ | ||
| class LogRecordExporterComponentPlugin | ||
| { | ||
| public function __construct(private readonly LogRecordExporterInterface $exporter) {} | ||
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| public function create(Context $context): LogRecordExporterInterface | ||
| { | ||
| return $this->exporter; | ||
| } | ||
| } | ||
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These are an optional dependency and not currently included in the SDK.