format

Author: TommyCpp

opentelemetry-otlp/tests/integration_test/src/trace_asserter.rs

@@ -218,4 +218,4 @@ pub fn read_spans_from_json(file: File) -> Vec<ResourceSpans> {
 
     let trace_data: TracesData = serde_json::from_reader(reader).unwrap();
     trace_data.resource_spans
-}
+}

opentelemetry-stdout/src/trace/encoder.rs

@@ -3,6 +3,16 @@ use opentelemetry_proto::tonic::trace::v1::ResourceSpans;
 use opentelemetry_sdk::export::trace::SpanData;
 use std::io::Write;
 
+/// serializes spans to stdout using pretty-printed JSON.
+/// 
+/// ```rust
+/// use opentelemetry_stdout::SpanExporterBuilder;
+///
+/// let exporter = SpanExporterBuilder::default()
+///     // pretty-print spans to stdout
+///     .with_encoder(opentelemetry_stdout::pretty)
+///     .build();
+/// ```
 pub fn pretty(writer: &mut dyn Write, spans: Vec<SpanData>) -> TraceResult<()> {
     let resource_spans: Vec<ResourceSpans> = spans.into_iter().map(ResourceSpans::from).collect();
     serde_json::to_writer_pretty(writer, &resource_spans)

opentelemetry-stdout/src/trace/exporter.rs

@@ -110,12 +110,12 @@ impl SpanExporterBuilder {
             writer: Some(self.writer.unwrap_or_else(|| Box::new(stdout()))),
             encoder: self.encoder.unwrap_or_else(|| {
                 Box::new(|writer, spans| {
-                    let resource_spans:Vec<ResourceSpans> = spans.into_iter().map(ResourceSpans::from).collect();
+                    let resource_spans: Vec<ResourceSpans> =
+                        spans.into_iter().map(ResourceSpans::from).collect();
                     serde_json::to_writer(writer, &resource_spans)
                         .map_err(|err| TraceError::Other(Box::new(err)))
                 })
             }),
         }
     }
 }
-

opentelemetry-stdout/src/trace/mod.rs

@@ -1,5 +1,5 @@
-mod exporter;
 mod encoder;
+mod exporter;
 
+pub use encoder::*;
 pub use exporter::*;
-pub use encoder::*;