[opentelemetry-php-contrib] SdkBundle: OTLP exporter factory creates exporter with default values

[DrLuke]

Describe your environment Describe any aspect of your environment relevant to the problem, including your php version (php -v will tell you your current version), version numbers of installed dependencies, information about your cloud hosting provider, etc. If you're reporting a problem with a specific version of a library in this repo, please check whether the problem has been fixed on master.

Tried on both

      "open-telemetry/sdk": "1.0.0",
      "open-telemetry/symfony-sdk-bundle": "0.0.23",

and

      "open-telemetry/sdk": "dev-main",
      "open-telemetry/symfony-sdk-bundle": "dev-main",

Steps to reproduce
With the config:

otel_sdk:
    trace:
        enabled: true
        span:
          processors: simple
        exporters:
          - "otlp+grpc://otel-col:4317"
          - "otlp+http://otel-col:4318"

The OTLP span exporters are created with default values for protocol and endpoint instead of the values defined in the config.

I guess the SdkBundle is not setting the values in the config the factory is trying to access.

What is the expected behavior?
Exporters configured as I specified

What is the actual behavior?
Exporters configured with default values

[mops1k]

I have same issue. URL for configuration always taking from \OpenTelemetry\SDK\Common\Configuration\Defaults.
Using environment parameter OTEL_EXPORTER_ZIPKIN_ENDPOINT with my settings only works.

You have to look at https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/configuration/sdk-environment-variables.md

[DrLuke]

Workaround if you only require a simple setup (one processor, one exporter, etc.):

1. Remove OtelSDKBundle
2. Set up with Zero-code configuration for automatic instrumentation
3. Add the components you need as synthetic services

e.g. if you want to use TracerProviderInterface via DI, you add this to your config:

OpenTelemetry\API\Trace\TracerProviderInterface:
        synthetic: true

and then somewhere appropriate in your Kernel you just inject it into the container:

protected function initializeContainer(): void
{
    parent::initializeContainer();

    /**
     * @psalm-suppress MixedMethodCall
     */
    $this->container->set("OpenTelemetry\API\Trace\TracerProviderInterface", Globals::tracerProvider());
}