[CHORE] adding user agent

Signed-off-by: Nicolas Takashi <nicolas.tcs@hotmail.com>

CHANGELOG.md

@@ -33,6 +33,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#7199](https://github.com/thanos-io/thanos/pull/7199): Reloader: Add support for watching and decompressing Prometheus configuration directories
 - [#7200](https://github.com/thanos-io/thanos/pull/7175): Query: Add `--selector.relabel-config` and `--selector.relabel-config-file` flags which allows scoping the Querier to a subset of matched TSDBs.
 - [#7233](https://github.com/thanos-io/thanos/pull/7233): UI: Showing Block Size Stats
+- [#7280](https://github.com/thanos-io/thanos/pull/7281): Adding User-Agent to request logs
 
 ### Changed
 

pkg/logging/http.go

@@ -25,13 +25,26 @@ type HTTPServerMiddleware struct {
 
 func (m *HTTPServerMiddleware) preCall(name string, start time.Time, r *http.Request) {
 	logger := m.opts.filterLog(m.logger)
-	level.Debug(logger).Log("http.start_time", start.String(), "http.method", fmt.Sprintf("%s %s", r.Method, r.URL), "http.request_id", r.Header.Get("X-Request-ID"), "thanos.method_name", name, "msg", "started call")
+	level.Debug(logger).Log(
+		"http.start_time", start.String(),
+		"http.method", fmt.Sprintf("%s %s", r.Method, r.URL),
+		"http.request_id", r.Header.Get("X-Request-ID"),
+		"http.user_agent", r.Header.Get("User-Agent"),
+		"thanos.method_name", name,
+		"msg", "started call",
+	)
 }
 
 func (m *HTTPServerMiddleware) postCall(name string, start time.Time, wrapped *httputil.ResponseWriterWithStatus, r *http.Request) {
 	status := wrapped.Status()
-	logger := log.With(m.logger, "http.method", fmt.Sprintf("%s %s", r.Method, r.URL), "http.request_id", r.Header.Get("X-Request-ID"), "http.status_code", fmt.Sprintf("%d", status),
-		"http.time_ms", fmt.Sprintf("%v", durationToMilliseconds(time.Since(start))), "http.remote_addr", r.RemoteAddr, "thanos.method_name", name)
+	logger := log.With(m.logger,
+		"http.method", fmt.Sprintf("%s %s", r.Method, r.URL),
+		"http.request_id", r.Header.Get("X-Request-ID"),
+		"http.user_agent", r.Header.Get("User-Agent"),
+		"http.status_code", fmt.Sprintf("%d", status),
+		"http.time_ms", fmt.Sprintf("%v", durationToMilliseconds(time.Since(start))),
+		"http.remote_addr", r.RemoteAddr,
+		"thanos.method_name", name)
 
 	logger = m.opts.filterLog(logger)
 	m.opts.levelFunc(logger, status).Log("msg", "finished call")