[TRACE SDK] Batch Span Processor options not using environment variables

[marcalff]

In this code:

struct BatchSpanProcessorOptions
{
  /**
   * The maximum buffer/queue size. After the size is reached, spans are
   * dropped.
   */
  size_t max_queue_size = 2048;

  /* The time interval between two consecutive exports. */
  std::chrono::milliseconds schedule_delay_millis = std::chrono::milliseconds(5000);

  /**
   * The maximum batch size of every export. It must be smaller or
   * equal to max_queue_size.
   */
  size_t max_export_batch_size = 512;
};

the default values for each configuration option are hard coded.

The specification requires to use the following environment variables:

• OTEL_BSP_SCHEDULE_DELAY
• OTEL_BSP_EXPORT_TIMEOUT
• OTEL_BSP_MAX_QUEUE_SIZE
• OTEL_BSP_MAX_EXPORT_BATCH_SIZE

Note that the export timeout option is also missing from BatchSpanProcessorOptions.

[github-actions[bot]]

This issue was marked as stale due to lack of activity.

[oandreeva-nv]

Is there any estimation on when this will be added?