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use crate::{api, exporter};
use std::sync::Arc;
use std::time::SystemTime;
#[derive(Debug)]
pub struct NoopProvider {}
impl api::Provider for NoopProvider {
type Tracer = NoopTracer;
fn get_tracer(&self, _name: &'static str) -> Self::Tracer {
NoopTracer {}
}
}
#[derive(Debug)]
pub struct NoopSpan {
span_context: api::SpanContext,
}
impl Default for NoopSpan {
fn default() -> Self {
NoopSpan::new()
}
}
impl NoopSpan {
pub fn new() -> Self {
NoopSpan {
span_context: api::SpanContext::new(
api::TraceId::invalid(),
api::SpanId::invalid(),
0,
false,
),
}
}
}
impl api::Span for NoopSpan {
fn add_event(&self, _name: String, _attributes: Vec<api::KeyValue>) {
}
fn add_event_with_timestamp(
&self,
_name: String,
_timestamp: SystemTime,
_attributes: Vec<api::KeyValue>,
) {
}
fn span_context(&self) -> api::SpanContext {
self.span_context.clone()
}
fn is_recording(&self) -> bool {
false
}
fn set_attribute(&self, _attribute: api::KeyValue) {
}
fn set_status(&self, _code: api::StatusCode, _message: String) {
}
fn update_name(&self, _new_name: String) {
}
fn end(&self) {
}
}
#[derive(Debug)]
pub struct NoopTracer {}
impl api::Tracer for NoopTracer {
type Span = api::NoopSpan;
fn invalid(&self) -> Self::Span {
api::NoopSpan::new()
}
fn start_from_context(&self, _name: &str, _context: &api::Context) -> Self::Span {
self.invalid()
}
fn span_builder(&self, name: &str) -> api::SpanBuilder {
api::SpanBuilder::from_name(name.to_string())
}
fn build_with_context(&self, _builder: api::SpanBuilder, _cx: &api::Context) -> Self::Span {
self.invalid()
}
}
#[derive(Debug)]
pub struct NoopSpanExporter {}
impl exporter::trace::SpanExporter for NoopSpanExporter {
fn export(&self, _batch: Vec<Arc<exporter::trace::SpanData>>) -> exporter::trace::ExportResult {
exporter::trace::ExportResult::Success
}
fn shutdown(&self) {
}
}