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use crate::api;
use std::any::Any;
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(0, 0, 0, false),
}
}
}
impl api::Span for NoopSpan {
fn add_event(&mut self, _message: String) {
}
fn add_event_with_timestamp(&mut self, _message: String, _timestamp: SystemTime) {
}
fn add_link(&mut self, _link: api::SpanContext) {
}
fn get_context(&self) -> api::SpanContext {
self.span_context.clone()
}
fn is_recording(&self) -> bool {
false
}
fn set_attribute(&mut self, _attribute: api::KeyValue) {
}
fn set_status(&mut self, _status: String) {
}
fn update_name(&mut self, _new_name: String) {
}
fn end(&mut self) {
}
fn as_any(&self) -> &dyn Any {
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(&self, _name: &str, _context: Option<api::SpanContext>) -> Self::Span {
api::NoopSpan::new()
}
fn get_active_span(&self) -> Self::Span {
api::NoopSpan::new()
}
fn mark_span_as_active(&self, _span: &Self::Span) {
}
fn mark_span_as_inactive(&self, _span_id: u64) {
}
}