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Log as JSON when IPX_LOG_FORMAT=json (#91)

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The log was text, so the Grafana dashboard picked lines apart with
regular expressions, and a change of wording would have blanked its
panels. With IPX_LOG_FORMAT=json each line is one JSON object: the
access log carries method, path, route, status and ms as fields (the
route passed from the routing layer in the response's extensions), and
each wire event its ev, feed, new, downloaded, failed, bytes, msg and
the rest (log_wire), beside the old message. The two startup lines that
were println! are logged, so no line breaks the JSON. Text stays the
default, for a terminal. The dashboard reads the fields with Loki's json
parser, and groups requests by route rather than path.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Ray Slakinski
2026-09-29 13:55:50 +00:00
parent 8ce0a4cb27
commit 4f8b3d6a1d
10 changed files with 95 additions and 35 deletions
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14
src/web.rs
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@@ -1941,7 +1941,10 @@ async fn name_span(route: MatchedPath, req: Request, next: Next) -> Response {
let span = tracing::Span::current();
span.context().span().update_name(format!("{} {}", req.method(), route.as_str()));
span.record("http.route", route.as_str());
next.run(req).await
let mut resp = next.run(req).await;
// For access_log, which runs outside routing and cannot see it otherwise.
resp.extensions_mut().insert(route);
resp
}
/// One line per HTTP request, so the web side shows up in the same log as the daemon.
@@ -1971,12 +1974,15 @@ async fn access_log(req: Request, next: Next) -> Response {
let resp = tracing::Instrument::instrument(next.run(req), span.clone()).await;
span.record("http.response.status_code", resp.status().as_u16());
if !quiet {
let ms = started.elapsed().as_millis();
let ms = started.elapsed().as_millis() as u64;
let status = resp.status().as_u16();
// The same as fields, for the JSON log (#91). Unrouted, a request has no route.
let route = resp.extensions().get::<MatchedPath>().map(|r| r.as_str().to_owned());
let method = method.as_str();
if resp.status().is_success() || resp.status().is_redirection() {
tracing::info!(target: "ipx::http", "{method} {path} -> {status} in {ms}ms");
tracing::info!(target: "ipx::http", method, path, route, status, ms, "{method} {path} -> {status} in {ms}ms");
} else {
tracing::warn!(target: "ipx::http", "{method} {path} -> {status} in {ms}ms");
tracing::warn!(target: "ipx::http", method, path, route, status, ms, "{method} {path} -> {status} in {ms}ms");
}
}
resp