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use std::collections::BTreeMap;
use std::error::Error;
use sentry_core::protocol::{Event, Exception, Value};
use sentry_core::{event_from_error, Breadcrumb, Level};
use tracing_core::field::{Field, Visit};
use tracing_core::{span, Subscriber};
use tracing_subscriber::layer::Context;
use tracing_subscriber::registry::LookupSpan;
fn convert_tracing_level(level: &tracing_core::Level) -> Level {
match level {
&tracing_core::Level::TRACE | &tracing_core::Level::DEBUG => Level::Debug,
&tracing_core::Level::INFO => Level::Info,
&tracing_core::Level::WARN => Level::Warning,
&tracing_core::Level::ERROR => Level::Error,
}
}
fn extract_event_data(event: &tracing_core::Event) -> (Option<String>, FieldVisitor) {
let mut visitor = FieldVisitor::default();
event.record(&mut visitor);
let message = visitor
.json_values
.remove("message")
.or_else(|| visitor.json_values.remove("error"))
.and_then(|v| v.as_str().map(|s| s.to_owned()));
(message, visitor)
}
pub(crate) fn extract_span_data(
attrs: &span::Attributes,
) -> (Option<String>, BTreeMap<String, Value>) {
let mut data = FieldVisitor::default();
attrs.record(&mut data);
let message = data
.json_values
.remove("message")
.and_then(|v| v.as_str().map(|s| s.to_owned()));
(message, data.json_values)
}
#[derive(Default)]
pub(crate) struct FieldVisitor {
pub json_values: BTreeMap<String, Value>,
pub exceptions: Vec<Exception>,
}
impl FieldVisitor {
fn record<T: Into<Value>>(&mut self, field: &Field, value: T) {
self.json_values
.insert(field.name().to_owned(), value.into());
}
}
impl Visit for FieldVisitor {
fn record_i64(&mut self, field: &Field, value: i64) {
self.record(field, value);
}
fn record_u64(&mut self, field: &Field, value: u64) {
self.record(field, value);
}
fn record_bool(&mut self, field: &Field, value: bool) {
self.record(field, value);
}
fn record_str(&mut self, field: &Field, value: &str) {
self.record(field, value);
}
fn record_error(&mut self, _field: &Field, value: &(dyn Error + 'static)) {
let event = event_from_error(value);
for exception in event.exception {
self.exceptions.push(exception);
}
}
fn record_debug(&mut self, field: &Field, value: &dyn std::fmt::Debug) {
self.record(field, format!("{:?}", value));
}
}
pub fn breadcrumb_from_event(event: &tracing_core::Event) -> Breadcrumb {
let (message, visitor) = extract_event_data(event);
Breadcrumb {
category: Some(event.metadata().target().to_owned()),
ty: "log".into(),
level: convert_tracing_level(event.metadata().level()),
message,
data: visitor.json_values,
..Default::default()
}
}
fn contexts_from_event(
event: &tracing_core::Event,
event_tags: BTreeMap<String, Value>,
) -> BTreeMap<String, sentry_core::protocol::Context> {
let event_meta = event.metadata();
let mut location_map = BTreeMap::new();
if let Some(module_path) = event_meta.module_path() {
location_map.insert("module_path".to_string(), module_path.into());
}
if let Some(file) = event_meta.file() {
location_map.insert("file".to_string(), file.into());
}
if let Some(line) = event_meta.line() {
location_map.insert("line".to_string(), line.into());
}
let mut context = BTreeMap::new();
if !event_tags.is_empty() {
context.insert(
"Rust Tracing Tags".to_string(),
sentry_core::protocol::Context::Other(event_tags),
);
}
if !location_map.is_empty() {
context.insert(
"Rust Tracing Location".to_string(),
sentry_core::protocol::Context::Other(location_map),
);
}
context
}
pub fn event_from_event<S>(event: &tracing_core::Event, _ctx: Context<S>) -> Event<'static>
where
S: Subscriber + for<'a> LookupSpan<'a>,
{
let (message, visitor) = extract_event_data(event);
Event {
logger: Some(event.metadata().target().to_owned()),
level: convert_tracing_level(event.metadata().level()),
message,
contexts: contexts_from_event(event, visitor.json_values),
..Default::default()
}
}
pub fn exception_from_event<S>(event: &tracing_core::Event, _ctx: Context<S>) -> Event<'static>
where
S: Subscriber + for<'a> LookupSpan<'a>,
{
let (message, visitor) = extract_event_data(event);
Event {
logger: Some(event.metadata().target().to_owned()),
level: convert_tracing_level(event.metadata().level()),
message,
exception: visitor.exceptions.into(),
contexts: contexts_from_event(event, visitor.json_values),
..Default::default()
}
}