Line data    Source code

       1              : use tracing_opentelemetry::OpenTelemetryLayer;
       2              : use tracing_subscriber::layer::SubscriberExt;
       3              : use tracing_subscriber::prelude::*;
       4              : 
       5              : /// Initialize logging to stderr, and OpenTelemetry tracing and exporter.
       6              : ///
       7              : /// Logging is configured using either `default_log_level` or
       8              : /// `RUST_LOG` environment variable as default log level.
       9              : ///
      10              : /// OpenTelemetry is configured with OTLP/HTTP exporter. It picks up
      11              : /// configuration from environment variables. For example, to change the destination,
      12              : /// set `OTEL_EXPORTER_OTLP_ENDPOINT=http://jaeger:4318`. See
      13              : /// `tracing-utils` package description.
      14              : ///
      15          575 : pub fn init_tracing_and_logging(default_log_level: &str) -> anyhow::Result<()> {
      16          575 :     // Initialize Logging
      17          575 :     let env_filter = tracing_subscriber::EnvFilter::try_from_default_env()
      18          575 :         .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new(default_log_level));
      19          575 : 
      20          575 :     let fmt_layer = tracing_subscriber::fmt::layer()
      21          575 :         .with_ansi(false)
      22          575 :         .with_target(false)
      23          575 :         .with_writer(std::io::stderr);
      24          575 : 
      25          575 :     // Initialize OpenTelemetry
      26          575 :     let otlp_layer =
      27          575 :         tracing_utils::init_tracing_without_runtime("compute_ctl").map(OpenTelemetryLayer::new);
      28          575 : 
      29          575 :     // Put it all together
      30          575 :     tracing_subscriber::registry()
      31          575 :         .with(env_filter)
      32          575 :         .with(otlp_layer)
      33          575 :         .with(fmt_layer)
      34          575 :         .init();
      35          575 :     tracing::info!("logging and tracing started");
      36              : 
      37          575 :     utils::logging::replace_panic_hook_with_tracing_panic_hook().forget();
      38          575 : 
      39          575 :     Ok(())
      40          575 : }
      41              : 
      42              : /// Replace all newline characters with a special character to make it
      43              : /// easier to grep for log messages.
      44            8 : pub fn inlinify(s: &str) -> String {
      45            8 :     s.replace('\n', "\u{200B}")
      46            8 : }