move async batch span processor to separate module

Author: lalitb

opentelemetry-sdk/Cargo.toml

@@ -56,6 +56,8 @@ internal-logs = ["tracing"]
 experimental_metrics_periodicreader_with_async_runtime = ["metrics"]
 spec_unstable_metrics_views = ["metrics"]
 experimental_logs_batch_log_processor_with_async_runtime = ["logs"]
+experimental_trace_batch_span_processor_with_async_runtime = ["trace"]
+
 
 [[bench]]
 name = "context"

opentelemetry-sdk/src/trace/mod.rs

@@ -15,6 +15,8 @@ mod sampler;
 mod span;
 mod span_limit;
 mod span_processor;
+mod span_processor_with_async_runtime;
+
 mod tracer;
 
 pub use config::{config, Config};
@@ -28,9 +30,14 @@ pub use span::Span;
 pub use span_limit::SpanLimits;
 pub use span_processor::{
     BatchConfig, BatchConfigBuilder, BatchSpanProcessor, BatchSpanProcessorBuilder,
-    BatchSpanProcessorDedicatedThread, BatchSpanProcessorDedicatedThreadBuilder,
     SimpleSpanProcessor, SpanProcessor,
 };
+
+/// Re-export asynchronous runtime span processor components.
+// TODO: make them available without re-export
+#[cfg(feature = "experimental_trace_batch_span_processor_with_async_runtime")]
+pub mod span_processor_with_async_runtime;
+
 pub use tracer::Tracer;
 
 #[cfg(feature = "jaeger_remote_sampler")]

opentelemetry-sdk/src/trace/provider.rs

@@ -301,7 +301,7 @@ impl Builder {
         exporter: T,
         runtime: R,
     ) -> Self {
-        let batch = BatchSpanProcessor::builder(exporter, runtime).build();
+        let batch = BatchSpanProcessor::builder(exporter).build();
         self.with_span_processor(batch)
     }