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mod.rs
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mod.rs
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pub use in_memory_exporter::{InMemorySpanExporter, InMemorySpanExporterBuilder};
mod in_memory_exporter;
use crate::{
export::{
trace::{ExportResult, SpanData, SpanExporter},
ExportError,
},
trace::{Config, EvictedQueue, SpanLinks},
InstrumentationLibrary,
};
use async_trait::async_trait;
use crossbeam_channel::{unbounded, Receiver, SendError, Sender};
use futures_util::future::BoxFuture;
pub use opentelemetry::testing::trace::TestSpan;
use opentelemetry::trace::{
SpanContext, SpanId, SpanKind, Status, TraceFlags, TraceId, TraceState,
};
use std::fmt::{Display, Formatter};
pub fn new_test_export_span_data() -> SpanData {
let config = Config::default();
SpanData {
span_context: SpanContext::new(
TraceId::from_u128(1),
SpanId::from_u64(1),
TraceFlags::SAMPLED,
false,
TraceState::default(),
),
parent_span_id: SpanId::INVALID,
span_kind: SpanKind::Internal,
name: "opentelemetry".into(),
start_time: opentelemetry::time::now(),
end_time: opentelemetry::time::now(),
attributes: Vec::new(),
dropped_attributes_count: 0,
events: EvictedQueue::new(config.span_limits.max_events_per_span),
links: SpanLinks::default(),
status: Status::Unset,
resource: config.resource,
instrumentation_lib: InstrumentationLibrary::default(),
}
}
#[derive(Debug)]
pub struct TestSpanExporter {
tx_export: Sender<SpanData>,
tx_shutdown: Sender<()>,
}
#[async_trait]
impl SpanExporter for TestSpanExporter {
fn export(&mut self, batch: Vec<SpanData>) -> BoxFuture<'static, ExportResult> {
for span_data in batch {
if let Err(err) = self
.tx_export
.send(span_data)
.map_err::<TestExportError, _>(Into::into)
{
return Box::pin(std::future::ready(Err(Into::into(err))));
}
}
Box::pin(std::future::ready(Ok(())))
}
fn shutdown(&mut self) {
let _ = self.tx_shutdown.send(()); // ignore error
}
}
pub fn new_test_exporter() -> (TestSpanExporter, Receiver<SpanData>, Receiver<()>) {
let (tx_export, rx_export) = unbounded();
let (tx_shutdown, rx_shutdown) = unbounded();
let exporter = TestSpanExporter {
tx_export,
tx_shutdown,
};
(exporter, rx_export, rx_shutdown)
}
#[derive(Debug)]
pub struct TokioSpanExporter {
tx_export: tokio::sync::mpsc::UnboundedSender<SpanData>,
tx_shutdown: tokio::sync::mpsc::UnboundedSender<()>,
}
impl SpanExporter for TokioSpanExporter {
fn export(&mut self, batch: Vec<SpanData>) -> BoxFuture<'static, ExportResult> {
for span_data in batch {
if let Err(err) = self
.tx_export
.send(span_data)
.map_err::<TestExportError, _>(Into::into)
{
return Box::pin(std::future::ready(Err(Into::into(err))));
}
}
Box::pin(std::future::ready(Ok(())))
}
fn shutdown(&mut self) {
self.tx_shutdown.send(()).unwrap();
}
}
pub fn new_tokio_test_exporter() -> (
TokioSpanExporter,
tokio::sync::mpsc::UnboundedReceiver<SpanData>,
tokio::sync::mpsc::UnboundedReceiver<()>,
) {
let (tx_export, rx_export) = tokio::sync::mpsc::unbounded_channel();
let (tx_shutdown, rx_shutdown) = tokio::sync::mpsc::unbounded_channel();
let exporter = TokioSpanExporter {
tx_export,
tx_shutdown,
};
(exporter, rx_export, rx_shutdown)
}
#[derive(Debug)]
pub struct TestExportError(String);
impl std::error::Error for TestExportError {}
impl ExportError for TestExportError {
fn exporter_name(&self) -> &'static str {
"test"
}
}
impl Display for TestExportError {
fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
write!(f, "{}", self.0)
}
}
#[cfg(any(feature = "rt-tokio", feature = "rt-tokio-current-thread"))]
impl<T> From<tokio::sync::mpsc::error::SendError<T>> for TestExportError {
fn from(err: tokio::sync::mpsc::error::SendError<T>) -> Self {
TestExportError(err.to_string())
}
}
impl<T> From<crossbeam_channel::SendError<T>> for TestExportError {
fn from(err: SendError<T>) -> Self {
TestExportError(err.to_string())
}
}
/// A no-op instance of an [`SpanExporter`].
///
/// [`SpanExporter`]: crate::export::trace::SpanExporter
#[derive(Debug, Default)]
pub struct NoopSpanExporter {
_private: (),
}
impl NoopSpanExporter {
/// Create a new noop span exporter
pub fn new() -> Self {
NoopSpanExporter { _private: () }
}
}
#[async_trait::async_trait]
impl SpanExporter for NoopSpanExporter {
fn export(&mut self, _: Vec<SpanData>) -> BoxFuture<'static, ExportResult> {
Box::pin(std::future::ready(Ok(())))
}
}