feat(tvix/store): add logging with tracing r/5558

This uses [tracing](https://github.com/tokio-rs/tracing) for logs/
tracing.

Annotate all method handlers with an instrument macro, and warn! a
message for them being unimplemented.

Co-Authored-By: Márton Boros <martonboros@gmail.com>
Change-Id: Id42a41db33782d82abfb8dc0e49a8915000e5d89
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7665
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

1 files changed, 9 insertions, 1 deletions

diff --git a/tvix/store/src/main.rs b/tvix/store/src/main.rs
index b28c3fdeef..d9261fc34d 100644
--- a/tvix/store/src/main.rs
+++ b/tvix/store/src/main.rs
@@ -7,6 +7,7 @@ use crate::proto::FILE_DESCRIPTOR_SET;
 
 use clap::Parser;
 use tonic::{transport::Server, Result};
+use tracing::{info, Level};
 
 mod dummy_blob_service;
 mod dummy_directory_service;
@@ -23,6 +24,9 @@ mod tests;
 struct Cli {
     #[clap(long, short = 'l')]
     listen_address: Option<String>,
+
+    #[clap(long)]
+    log_level: Option<Level>,
 }
 
 #[tokio::main]
@@ -34,6 +38,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .parse()
         .unwrap();
 
+    let level = cli.log_level.unwrap_or(Level::INFO);
+    let subscriber = tracing_subscriber::fmt().with_max_level(level).finish();
+    tracing::subscriber::set_global_default(subscriber).ok();
+
     let mut server = Server::builder();
 
     let blob_service = dummy_blob_service::DummyBlobService {};
@@ -53,7 +61,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         router = router.add_service(reflection_svc);
     }
 
-    println!("tvix-store listening on {}", listen_address);
+    info!("tvix-store listening on {}", listen_address);
 
     router.serve(listen_address).await?;