Merge pull request #102 from dandi/gh-101

Use local timezone offset for log timestamps

CHANGELOG.md

@@ -9,6 +9,7 @@ In Development
     - Disable log coloration when stderr is not a terminal
     - Suppress noisy & irrelevant log messages from various dependencies
     - Log errors that cause 404 and 500 responses
+    - Use local timezone offset for log timestamps
 - Added breadcrumbs to HTML views of collections
 - `FAST_NOT_EXIST` components are now checked for case-insensitively
 - Add links to version & asset metadata to the web view

Cargo.toml

@@ -46,7 +46,7 @@ tokio = { version = "1.36.0", features = ["macros", "net", "rt-multi-thread"] }
 tower = "0.4.13"
 tower-http = { version = "0.5.2", features = ["set-header", "trace"] }
 tracing = "0.1.40"
-tracing-subscriber = "0.3.18"
+tracing-subscriber = { version = "0.3.18", features = ["local-time", "time"] }
 url = { version = "2.5.0", features = ["serde"] }
 xml-rs = "0.8.19"
 

src/main.rs

@@ -32,7 +32,7 @@ use std::sync::Arc;
 use tower::service_fn;
 use tower_http::{set_header::response::SetResponseHeaderLayer, trace::TraceLayer};
 use tracing::Level;
-use tracing_subscriber::{filter::Targets, prelude::*};
+use tracing_subscriber::{filter::Targets, fmt::time::OffsetTime, prelude::*};
 
 static STYLESHEET: &str = include_str!("dav/static/styles.css");
 
@@ -64,12 +64,16 @@ struct Arguments {
     title: String,
 }
 
-#[tokio::main]
-async fn main() -> anyhow::Result<()> {
-    let args = Arguments::parse();
+// See
+// <https://docs.rs/tracing-subscriber/latest/tracing_subscriber/fmt/time/struct.OffsetTime.html#method.local_rfc_3339>
+// for an explanation of the main + #[tokio::main]run thing
+fn main() -> anyhow::Result<()> {
+    let timer =
+        OffsetTime::local_rfc_3339().context("failed to determine local timezone offset")?;
     tracing_subscriber::registry()
         .with(
             tracing_subscriber::fmt::layer()
+                .with_timer(timer)
                 .with_ansi(stderr().is_terminal())
                 .with_writer(stderr),
         )
@@ -82,6 +86,12 @@ async fn main() -> anyhow::Result<()> {
                 .with_default(Level::INFO),
         )
         .init();
+    run()
+}
+
+#[tokio::main]
+async fn run() -> anyhow::Result<()> {
+    let args = Arguments::parse();
     let dandi = DandiClient::new(args.api_url)?;
     let zarrman = ZarrManClient::new()?;
     let templater = Templater::load()?;