|
| 1 | +use std::pin::Pin; |
| 2 | +use std::sync::Arc; |
| 3 | +use std::{collections::HashMap, future::Future}; |
| 4 | + |
| 5 | +use opentelemetry::propagation::Injector; |
| 6 | +use opentelemetry::propagation::TextMapPropagator; |
| 7 | +use opentelemetry::trace::TracerProvider; |
| 8 | +use opentelemetry_otlp::{SpanExporter as OtlpExporter, WithExportConfig}; |
| 9 | +use opentelemetry_sdk::{propagation::TraceContextPropagator, trace::SdkTracerProvider, Resource}; |
| 10 | +use opentelemetry_stdout::SpanExporter as StdoutExporter; |
| 11 | + |
| 12 | +use tracing::{debug, error, info, level_filters::LevelFilter, trace, warn}; |
| 13 | +use tracing_opentelemetry::{OpenTelemetryLayer, OpenTelemetrySpanExt}; |
| 14 | +use tracing_subscriber::{filter::Targets, fmt, layer::SubscriberExt, util::SubscriberInitExt}; |
| 15 | +use vss_client::headers::{VssHeaderProvider, VssHeaderProviderError}; |
| 16 | + |
| 17 | +use crate::logger::{LogRecord, LogWriter}; |
| 18 | + |
| 19 | +/// Adapter that bridges our `Logger` to the `tracing` ecosystem. |
| 20 | +/// |
| 21 | +/// This allows existing `log_*!` macros to emit events as tracing spans/events |
| 22 | +/// without requiring a migration to tracing-specific macros. |
| 23 | +pub struct TracingLogWriter {} |
| 24 | + |
| 25 | +impl LogWriter for TracingLogWriter { |
| 26 | + fn log(&self, record: LogRecord) { |
| 27 | + match record.level { |
| 28 | + lightning::util::logger::Level::Gossip => { |
| 29 | + trace!(target: "ldk_node", module = record.module_path, line = record.line, "{}", record.args) |
| 30 | + }, |
| 31 | + lightning::util::logger::Level::Trace => { |
| 32 | + trace!(target: "ldk_node", module = record.module_path, line = record.line, "{}", record.args) |
| 33 | + }, |
| 34 | + lightning::util::logger::Level::Debug => { |
| 35 | + debug!(target: "ldk_node", module = record.module_path, line = record.line, "{}", record.args) |
| 36 | + }, |
| 37 | + lightning::util::logger::Level::Info => { |
| 38 | + info!(target: "ldk_node", module = record.module_path, line = record.line, "{}", record.args) |
| 39 | + }, |
| 40 | + lightning::util::logger::Level::Warn => { |
| 41 | + warn!(target: "ldk_node", module = record.module_path, line = record.line, "{}", record.args) |
| 42 | + }, |
| 43 | + lightning::util::logger::Level::Error => { |
| 44 | + error!(target: "ldk_node", module = record.module_path, line = record.line, "{}", record.args) |
| 45 | + }, |
| 46 | + } |
| 47 | + } |
| 48 | +} |
| 49 | + |
| 50 | +pub(crate) struct TracingHeaderProvider { |
| 51 | + inner: Arc<dyn VssHeaderProvider>, |
| 52 | + propagator: TraceContextPropagator, |
| 53 | +} |
| 54 | + |
| 55 | +impl TracingHeaderProvider { |
| 56 | + pub fn new(inner: Arc<dyn VssHeaderProvider>) -> Self { |
| 57 | + Self { inner, propagator: TraceContextPropagator::new() } |
| 58 | + } |
| 59 | +} |
| 60 | + |
| 61 | +impl VssHeaderProvider for TracingHeaderProvider { |
| 62 | + fn get_headers<'life0, 'life1, 'async_trait>( |
| 63 | + &'life0 self, request: &'life1 [u8], |
| 64 | + ) -> Pin< |
| 65 | + Box< |
| 66 | + dyn Future<Output = Result<HashMap<String, String>, VssHeaderProviderError>> |
| 67 | + + Send |
| 68 | + + 'async_trait, |
| 69 | + >, |
| 70 | + > |
| 71 | + where |
| 72 | + 'life0: 'async_trait, |
| 73 | + 'life1: 'async_trait, |
| 74 | + Self: 'async_trait, |
| 75 | + { |
| 76 | + let inner = Arc::clone(&self.inner); |
| 77 | + let request = request.to_vec(); |
| 78 | + let propagator = self.propagator.clone(); |
| 79 | + |
| 80 | + Box::pin(async move { |
| 81 | + let mut headers = inner.get_headers(&request).await?; |
| 82 | + |
| 83 | + let cx = tracing::Span::current().context(); |
| 84 | + propagator.inject_context(&cx, &mut HeaderInjector(&mut headers)); |
| 85 | + |
| 86 | + Ok(headers) |
| 87 | + }) |
| 88 | + } |
| 89 | +} |
| 90 | + |
| 91 | +struct HeaderInjector<'a>(&'a mut HashMap<String, String>); |
| 92 | + |
| 93 | +impl Injector for HeaderInjector<'_> { |
| 94 | + fn set(&mut self, key: &str, value: String) { |
| 95 | + self.0.insert(key.to_string(), value); |
| 96 | + } |
| 97 | +} |
| 98 | + |
| 99 | +/// Initialize tracing subscriber for Jaeger and `stdout` backends. |
| 100 | +pub fn configure_tracer() { |
| 101 | + let otlp_jaeger_exporter = OtlpExporter::builder() |
| 102 | + .with_tonic() |
| 103 | + .with_endpoint("http://localhost:4317") |
| 104 | + .build() |
| 105 | + .expect("Failed to create OTLP exporter"); |
| 106 | + let stdout_exporter = StdoutExporter::default(); |
| 107 | + |
| 108 | + let tracer_provider = SdkTracerProvider::builder() |
| 109 | + .with_batch_exporter(otlp_jaeger_exporter) |
| 110 | + .with_batch_exporter(stdout_exporter) |
| 111 | + .with_resource(Resource::builder().with_service_name("ldk-node").build()) |
| 112 | + .build(); |
| 113 | + |
| 114 | + let tracer = tracer_provider.tracer("ldk_node"); |
| 115 | + |
| 116 | + tracing_subscriber::registry() |
| 117 | + .with( |
| 118 | + Targets::new() |
| 119 | + .with_default(LevelFilter::WARN) |
| 120 | + .with_target("ldk_node", LevelFilter::INFO), |
| 121 | + ) |
| 122 | + .with(fmt::layer().json()) |
| 123 | + .with(OpenTelemetryLayer::new(tracer)) |
| 124 | + .init(); |
| 125 | +} |
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